Replace asf4 tree with submodule repo adafruit/asf4, branch circuitpython.

17 files changed, 0 insertions, 3197 deletions

diff --git a/atmel-samd/asf4/samd51/hal/src/hal_adc_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_adc_sync.c
deleted file mode 100644
index 9c7c3ab52..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_adc_sync.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/**
- * \file
- *
- * \brief ADC functionality implementation.
- *
- * Copyright (C) 2014-2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-/**
- * \brief Indicates HAL being compiled. Must be defined before including.
- */
-#define _COMPILING_HAL
-
-#include "hal_adc_sync.h"
-#include <utils_assert.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Maximum amount of ADC interface instances
- */
-#define MAX_ADC_AMOUNT ADC_INST_NUM
-
-/**
- * \brief Initialize ADC
- */
-int32_t adc_sync_init(struct adc_sync_descriptor *const descr, void *const hw, void *const func)
-{
-	ASSERT(descr && hw);
-
-	return _adc_sync_init(&descr->device, hw);
-}
-
-/**
- * \brief Deinitialize ADC
- */
-int32_t adc_sync_deinit(struct adc_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	_adc_sync_deinit(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Enable ADC
- */
-int32_t adc_sync_enable_channel(struct adc_sync_descriptor *const descr, const uint8_t channel)
-{
-	ASSERT(descr);
-	_adc_sync_enable_channel(&descr->device, channel);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Disable ADC
- */
-int32_t adc_sync_disable_channel(struct adc_sync_descriptor *const descr, const uint8_t channel)
-{
-	ASSERT(descr);
-	_adc_sync_disable_channel(&descr->device, channel);
-	return ERR_NONE;
-}
-
-/*
- * \brief Read data from ADC
- */
-int32_t adc_sync_read_channel(struct adc_sync_descriptor *const descr, const uint8_t channel, uint8_t *const buffer,
-                              const uint16_t length)
-{
-	uint8_t  data_size;
-	uint16_t offset = 0;
-
-	ASSERT(descr && buffer && length);
-	data_size = _adc_sync_get_data_size(&descr->device);
-	ASSERT(!(length % data_size));
-
-	do {
-		uint16_t result;
-		_adc_sync_convert(&descr->device);
-
-		while (!_adc_sync_is_channel_conversion_done(&descr->device, channel))
-			;
-
-		result         = _adc_sync_read_channel_data(&descr->device, channel);
-		buffer[offset] = result;
-		if (1 < data_size) {
-			buffer[offset + 1] = result >> 8;
-		}
-		offset += data_size;
-	} while (offset < length);
-
-	return offset;
-}
-
-/**
- * \brief Set ADC reference source
- */
-int32_t adc_sync_set_reference(struct adc_sync_descriptor *const descr, const adc_reference_t reference)
-{
-	ASSERT(descr);
-	_adc_sync_set_reference_source(&descr->device, reference);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC resolution
- */
-int32_t adc_sync_set_resolution(struct adc_sync_descriptor *const descr, const adc_resolution_t resolution)
-{
-	ASSERT(descr);
-	_adc_sync_set_resolution(&descr->device, resolution);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC input source of a channel
- */
-int32_t adc_sync_set_inputs(struct adc_sync_descriptor *const descr, const adc_pos_input_t pos_input,
-                            const adc_neg_input_t neg_input, const uint8_t channel)
-{
-	ASSERT(descr);
-	_adc_sync_set_inputs(&descr->device, pos_input, neg_input, channel);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC thresholds
- */
-int32_t adc_sync_set_thresholds(struct adc_sync_descriptor *const descr, const adc_threshold_t low_threshold,
-                                const adc_threshold_t up_threshold)
-{
-	ASSERT(descr);
-	_adc_sync_set_thresholds(&descr->device, low_threshold, up_threshold);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC gain
- */
-int32_t adc_sync_set_channel_gain(struct adc_sync_descriptor *const descr, const uint8_t channel, const adc_gain_t gain)
-{
-	ASSERT(descr);
-	_adc_sync_set_channel_gain(&descr->device, channel, gain);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC conversion mode
- */
-int32_t adc_sync_set_conversion_mode(struct adc_sync_descriptor *const descr, const enum adc_conversion_mode mode)
-{
-	ASSERT(descr);
-	_adc_sync_set_conversion_mode(&descr->device, mode);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC differential mode
- */
-int32_t adc_sync_set_channel_differential_mode(struct adc_sync_descriptor *const descr, const uint8_t channel,
-                                               const enum adc_differential_mode mode)
-{
-	ASSERT(descr);
-	_adc_sync_set_channel_differential_mode(&descr->device, channel, mode);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set ADC window mode
- */
-int32_t adc_sync_set_window_mode(struct adc_sync_descriptor *const descr, const adc_window_mode_t mode)
-{
-	ASSERT(descr);
-	_adc_sync_set_window_mode(&descr->device, mode);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve threshold state
- */
-int32_t adc_sync_get_threshold_state(const struct adc_sync_descriptor *const descr, adc_threshold_status_t *const state)
-{
-	ASSERT(descr && state);
-	_adc_sync_get_threshold_state(&descr->device, state);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Check if conversion is complete
- */
-int32_t adc_sync_is_channel_conversion_complete(const struct adc_sync_descriptor *const descr, const uint8_t channel)
-{
-	ASSERT(descr);
-	return _adc_sync_is_channel_conversion_done(&descr->device, channel);
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t adc_sync_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-//@}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_atomic.c b/atmel-samd/asf4/samd51/hal/src/hal_atomic.c
deleted file mode 100644
index 82a11e2bd..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_atomic.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/**
- * \file
- *
- * \brief Critical sections related functionality implementation.
- *
- * Copyright (C) 2014 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_atomic.h"
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Disable interrupts, enter critical section
- */
-void atomic_enter_critical(hal_atomic_t volatile *atomic)
-{
-	*atomic = __get_PRIMASK();
-	__disable_irq();
-	__DMB();
-}
-
-/**
- * \brief Exit atomic section
- */
-void atomic_leave_critical(hal_atomic_t volatile *atomic)
-{
-	__DMB();
-	__set_PRIMASK(*atomic);
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t atomic_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_dac_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_dac_sync.c
deleted file mode 100644
index a56e6aef7..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_dac_sync.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/**
- * \file
- *
- * \brief DAC functionality implementation.
- *
- * Copyright (C) 2014 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_dac_sync.h"
-#include <utils_assert.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Initialize the DAC HAL instance and hardware.
- */
-int32_t dac_sync_init(struct dac_sync_descriptor *const descr, void *const hw)
-{
-	uint8_t i;
-	int32_t rc;
-
-	ASSERT(descr && hw);
-
-	rc = _dac_sync_init(&descr->device, hw);
-	if (rc) {
-		return rc;
-	}
-
-	for (i = 0; i < CHANNEL_NUM; i++) {
-		descr->sel_ch[i].buffer = NULL;
-		descr->sel_ch[i].length = 0;
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Deinitialize the DAC HAL instance and hardware
- */
-int32_t dac_sync_deinit(struct dac_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-
-	_dac_sync_deinit(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Enable DAC channel
- */
-int32_t dac_sync_enable_channel(struct dac_sync_descriptor *const descr, const uint8_t ch)
-{
-	ASSERT(descr && (ch < CHANNEL_NUM));
-
-	_dac_sync_enable_channel(&descr->device, ch);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Disable DAC channel
- */
-int32_t dac_sync_disable_channel(struct dac_sync_descriptor *const descr, const uint8_t ch)
-{
-	ASSERT(descr && (ch < CHANNEL_NUM));
-
-	_dac_sync_disable_channel(&descr->device, ch);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief DAC convert digital data to analog output
- */
-int32_t dac_sync_write(struct dac_sync_descriptor *descr, const uint8_t ch, uint16_t *buffer, uint32_t length)
-{
-	ASSERT(descr && (ch < CHANNEL_NUM) && buffer && length);
-
-	/* check whether channel is enable */
-	if (!_dac_sync_is_channel_enable(&descr->device, ch)) {
-		return ERR_NOT_READY;
-	}
-
-	descr->sel_ch[ch].buffer = buffer;
-	descr->sel_ch[ch].length = length;
-
-	while (descr->sel_ch[ch].length) {
-		_dac_sync_write_data(&descr->device, *(descr->sel_ch[ch].buffer), ch);
-		descr->sel_ch[ch].buffer++;
-		descr->sel_ch[ch].length--;
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Get DAC driver version
- */
-uint32_t dac_sync_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_delay.c b/atmel-samd/asf4/samd51/hal/src/hal_delay.c
deleted file mode 100644
index ce963db00..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_delay.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/**
- * \file
- *
- * \brief HAL delay related functionality implementation.
- *
- * Copyright (C) 2014-2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include <hpl_irq.h>
-#include <hpl_reset.h>
-#include <hpl_sleep.h>
-#include "hal_delay.h"
-#include <hpl_delay.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief The pointer to a hardware instance used by the driver.
- */
-static void *hardware;
-
-/**
- * \brief Initialize Delay driver
- */
-void delay_init(void *const hw)
-{
-	_delay_init(hardware = hw);
-}
-
-/**
- * \brief Perform delay in us
- */
-void delay_us(const uint16_t us)
-{
-	_delay_cycles(hardware, _get_cycles_for_us(us));
-}
-
-/**
- * \brief Perform delay in ms
- */
-void delay_ms(const uint16_t ms)
-{
-	_delay_cycles(hardware, _get_cycles_for_ms(ms));
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t delay_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_evsys.c b/atmel-samd/asf4/samd51/hal/src/hal_evsys.c
deleted file mode 100644
index 9001d7239..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_evsys.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/**
- * \file
- *
- * \brief HAL event system related functionality implementation.
- *
- * Copyright (C) 2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_evsys.h"
-#include <hpl_evsys.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Initialize event system.
- */
-int32_t event_system_init(void)
-{
-	return _event_system_init();
-}
-
-/**
- * \brief Deinitialize event system.
- */
-int32_t event_system_deinit(void)
-{
-	return _event_system_deinit();
-}
-
-/**
- * \brief Enable event reception by the given user from the given channel
- */
-int32_t event_system_enable_user(const uint16_t user, const uint16_t channel)
-{
-	return _event_system_enable_user(user, channel, true);
-}
-
-/**
- * \brief Enable event reception by the given user from the given channel
- */
-int32_t event_system_disable_user(const uint16_t user, const uint16_t channel)
-{
-	return _event_system_enable_user(user, channel, false);
-}
-
-/**
- * \brief Enable event generation by the given generator for the given channel
- */
-int32_t event_system_enable_generator(const uint16_t generator, const uint16_t channel)
-{
-	return _event_system_enable_generator(generator, channel, true);
-}
-
-/**
- * \brief Enable event generation by the given generator for the given channel
- */
-int32_t event_system_disable_generator(const uint16_t generator, const uint16_t channel)
-{
-	return _event_system_enable_generator(generator, channel, false);
-}
-
-/**
- * \brief Retrieve the current driver version
- *
- * \return Current driver version
- */
-uint32_t event_system_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_flash.c b/atmel-samd/asf4/samd51/hal/src/hal_flash.c
deleted file mode 100644
index 165d46d89..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_flash.c
+++ /dev/null
@@ -1,330 +0,0 @@
-/**
- * \file
- *
- * \brief Flash functionality implementation.
- *
- * Copyright (C) 2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_flash.h"
-#include <utils_assert.h>
-#include <utils.h>
-#include <hal_atomic.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-static void flash_ready(struct _flash_device *device);
-static void flash_error(struct _flash_device *device);
-
-static int32_t flash_is_address_aligned(struct flash_descriptor *flash, const uint32_t flash_addr);
-
-/**
- * \brief Initialize the FLASH HAL instance and hardware for callback mode.
- */
-int32_t flash_init(struct flash_descriptor *flash, void *const hw)
-{
-	int32_t rc;
-
-	ASSERT(flash && hw);
-
-	rc = _flash_init(&flash->dev, hw);
-	if (rc) {
-		return rc;
-	}
-
-	flash->dev.flash_cb.ready_cb = flash_ready;
-	flash->dev.flash_cb.error_cb = flash_error;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief  Deinitialize the FLASH HAL instance.
- */
-int32_t flash_deinit(struct flash_descriptor *flash)
-{
-	ASSERT(flash);
-
-	_flash_deinit(&flash->dev);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Reads a number of bytes to a page in the internal Flash
- */
-int32_t flash_read(struct flash_descriptor *flash, uint32_t src_addr, uint8_t *buffer, uint32_t length)
-{
-	ASSERT(flash && buffer && length);
-
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-
-	/* Check if the address is valid */
-	if ((src_addr > page_size * total_pages) || (src_addr + length > page_size * total_pages)) {
-		return ERR_BAD_ADDRESS;
-	}
-
-	_flash_read(&flash->dev, src_addr, buffer, length);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Updates several bytes to the internal Flash
- */
-int32_t flash_write(struct flash_descriptor *flash, uint32_t dst_addr, uint8_t *buffer, uint32_t length)
-{
-	ASSERT(flash && buffer && length);
-
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-
-	/* Check if the address is valid */
-	if ((dst_addr > page_size * total_pages) || (dst_addr + length > page_size * total_pages)) {
-		return ERR_BAD_ADDRESS;
-	}
-
-	if (_flash_is_locked(&flash->dev, dst_addr)) {
-		return ERR_DENIED;
-	}
-
-	_flash_write(&flash->dev, dst_addr, buffer, length);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Appends a number of bytes to a page in the internal Flash
- */
-int32_t flash_append(struct flash_descriptor *flash, uint32_t dst_addr, const uint8_t *buffer, uint32_t length)
-{
-	ASSERT(flash && buffer && length);
-
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-
-	/* Check if the address is valid */
-	if ((dst_addr > page_size * total_pages) || (dst_addr + length > page_size * total_pages)) {
-		return ERR_BAD_ADDRESS;
-	}
-
-	if (_flash_is_locked(&flash->dev, dst_addr)) {
-		return ERR_DENIED;
-	}
-
-	_flash_append(&flash->dev, dst_addr, buffer, length);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Execute erase in the internal flash
- */
-int32_t flash_erase(struct flash_descriptor *flash, const uint32_t dst_addr, const uint32_t page_nums)
-{
-	ASSERT(flash && page_nums);
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-	int32_t  rc;
-
-	rc = flash_is_address_aligned(flash, dst_addr);
-	if (rc) {
-		return rc;
-	}
-
-	if ((page_nums > total_pages) || (dst_addr / page_size + page_nums > total_pages)) {
-		return ERR_INVALID_ARG;
-	}
-
-	_flash_erase(&flash->dev, dst_addr, page_nums);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Register a function as FLASH transfer completion callback
- */
-int32_t flash_register_callback(struct flash_descriptor *flash, const enum flash_cb_type type, flash_cb_t func)
-{
-	ASSERT(flash);
-
-	switch (type) {
-	case FLASH_CB_READY:
-		flash->callbacks.cb_ready = func;
-		break;
-
-	case FLASH_CB_ERROR:
-		flash->callbacks.cb_error = func;
-		break;
-
-	default:
-		return ERR_INVALID_ARG;
-	}
-
-	_flash_set_irq_state(&flash->dev, (enum _flash_cb_type)type, NULL != func);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Execute lock in the internal flash
- */
-int32_t flash_lock(struct flash_descriptor *flash, const uint32_t dst_addr, const uint32_t page_nums)
-{
-	ASSERT(flash && page_nums);
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-	int32_t  rc;
-
-	rc = flash_is_address_aligned(flash, dst_addr);
-	if (rc) {
-		return rc;
-	}
-
-	if ((page_nums > total_pages) || (dst_addr / page_size + page_nums > total_pages)) {
-		return ERR_INVALID_ARG;
-	}
-
-	return _flash_lock(&flash->dev, dst_addr, page_nums);
-}
-
-/**
- * \brief Execute unlock in the internal flash
- */
-int32_t flash_unlock(struct flash_descriptor *flash, const uint32_t dst_addr, const uint32_t page_nums)
-{
-	ASSERT(flash && page_nums);
-	uint32_t page_size   = _flash_get_page_size(&flash->dev);
-	uint32_t total_pages = _flash_get_total_pages(&flash->dev);
-	int32_t  rc;
-
-	rc = flash_is_address_aligned(flash, dst_addr);
-	if (rc) {
-		return rc;
-	}
-
-	if ((page_nums > total_pages) || (dst_addr / page_size + page_nums > total_pages)) {
-		return ERR_INVALID_ARG;
-	}
-
-	return _flash_unlock(&flash->dev, dst_addr, page_nums);
-}
-
-/**
- * \brief Get the flash page size.
- */
-uint32_t flash_get_page_size(struct flash_descriptor *flash)
-{
-	ASSERT(flash);
-	return _flash_get_page_size(&flash->dev);
-}
-
-/**
- * \brief Get the numbers of flash page.
- */
-uint32_t flash_get_total_pages(struct flash_descriptor *flash)
-{
-	ASSERT(flash);
-	return _flash_get_total_pages(&flash->dev);
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t flash_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-/**
- * \internal check the address whether it is aligned
- * \param[in, out] flash        Pointer to the HAL FLASH instance.
- * \param[in]  flash_addr       address to be check in flash
- *
- * \return whether it is valid
- *  \retval 0 Valid.
- *  \retval -1 Error, invalid.
- */
-static int32_t flash_is_address_aligned(struct flash_descriptor *flash, const uint32_t flash_addr)
-{
-	ASSERT(flash);
-
-	uint32_t page_size = _flash_get_page_size(&flash->dev);
-
-	/* Check if the read address not aligned to the start of a page */
-	if (flash_addr & (page_size - 1)) {
-		return ERR_BAD_ADDRESS;
-	}
-	return ERR_NONE;
-}
-
-/**
- * \internal Ready for a new flash command
- *
- * \param[in] device The pointer to flash device structure
- */
-static void flash_ready(struct _flash_device *device)
-{
-	#pragma GCC diagnostic push
-	#pragma GCC diagnostic ignored "-Wcast-align"
-	struct flash_descriptor *const descr = CONTAINER_OF(device, struct flash_descriptor, dev);
-	#pragma GCC diagnostic pop
-	if (descr->callbacks.cb_ready) {
-		descr->callbacks.cb_ready(descr);
-	}
-}
-
-/**
- * \internal Error occurs in flash command
- *
- * \param[in] device The pointer to flash device structure
- */
-static void flash_error(struct _flash_device *device)
-{
-	#pragma GCC diagnostic push
-	#pragma GCC diagnostic ignored "-Wcast-align"
-	struct flash_descriptor *const descr = CONTAINER_OF(device, struct flash_descriptor, dev);
-	#pragma GCC diagnostic pop
-	if (descr->callbacks.cb_error) {
-		descr->callbacks.cb_error(descr);
-	}
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_gpio.c b/atmel-samd/asf4/samd51/hal/src/hal_gpio.c
deleted file mode 100644
index 319726290..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_gpio.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/**
- * \file
- *
- * \brief Port
- *
- * Copyright (C) 2014 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_gpio.h"
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-uint32_t gpio_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_i2c_m_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_i2c_m_sync.c
deleted file mode 100644
index 7fa26ac7f..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_i2c_m_sync.c
+++ /dev/null
@@ -1,268 +0,0 @@
-/**
- * \file
- *
- * \brief I/O I2C related functionality implementation.
- *
- * Copyright (C) 2014-2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-#include <hal_i2c_m_sync.h>
-#include <utils.h>
-#include <utils_assert.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Sync version of I2C I/O read
- */
-static int32_t i2c_m_sync_read(struct io_descriptor *io, uint8_t *buf, const uint16_t n)
-{
-	struct i2c_m_sync_desc *i2c = CONTAINER_OF(io, struct i2c_m_sync_desc, io);
-	struct _i2c_m_msg       msg;
-	int32_t                 ret;
-
-	msg.addr   = i2c->slave_addr;
-	msg.len    = n;
-	msg.flags  = I2C_M_STOP | I2C_M_RD;
-	msg.buffer = buf;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret) {
-		return ret;
-	}
-
-	return n;
-}
-
-/**
- * \brief Sync version of I2C I/O write
- */
-static int32_t i2c_m_sync_write(struct io_descriptor *io, const uint8_t *buf, const uint16_t n)
-{
-	struct i2c_m_sync_desc *i2c = CONTAINER_OF(io, struct i2c_m_sync_desc, io);
-	struct _i2c_m_msg       msg;
-	int32_t                 ret;
-
-	msg.addr   = i2c->slave_addr;
-	msg.len    = n;
-	msg.flags  = I2C_M_STOP;
-	msg.buffer = (uint8_t *)buf;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret) {
-		return ret;
-	}
-
-	return n;
-}
-
-/**
- * \brief Sync version of i2c initialize
- */
-int32_t i2c_m_sync_init(struct i2c_m_sync_desc *i2c, void *hw)
-{
-	int32_t init_status;
-	ASSERT(i2c);
-
-	init_status = _i2c_m_sync_init(&i2c->device, hw);
-	if (init_status) {
-		return init_status;
-	}
-
-	/* Init I/O */
-	i2c->io.read  = i2c_m_sync_read;
-	i2c->io.write = i2c_m_sync_write;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief deinitialize
- */
-int32_t i2c_m_sync_deinit(struct i2c_m_sync_desc *i2c)
-{
-	int32_t status;
-	ASSERT(i2c);
-
-	status = _i2c_m_sync_deinit(&i2c->device);
-	if (status) {
-		return status;
-	}
-
-	i2c->io.read  = NULL;
-	i2c->io.write = NULL;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Sync version of i2c enable
- */
-int32_t i2c_m_sync_enable(struct i2c_m_sync_desc *i2c)
-{
-	return _i2c_m_sync_enable(&i2c->device);
-}
-
-/**
- * \brief Sync version of i2c disable
- */
-int32_t i2c_m_sync_disable(struct i2c_m_sync_desc *i2c)
-{
-	return _i2c_m_sync_disable(&i2c->device);
-}
-
-/**
- * \brief Sync version of i2c set slave address
- */
-int32_t i2c_m_sync_set_slaveaddr(struct i2c_m_sync_desc *i2c, int16_t addr, int32_t addr_len)
-{
-	return i2c->slave_addr = (addr & 0x3ff) | (addr_len & I2C_M_TEN);
-}
-
-/**
- * \brief Sync version of i2c set baudrate
- */
-int32_t i2c_m_sync_set_baudrate(struct i2c_m_sync_desc *i2c, uint32_t clkrate, uint32_t baudrate)
-{
-	return _i2c_m_sync_set_baudrate(&i2c->device, clkrate, baudrate);
-}
-
-/**
- * \brief Sync version of i2c write command
- */
-int32_t i2c_m_sync_cmd_write(struct i2c_m_sync_desc *i2c, uint8_t reg, uint8_t *buffer, uint8_t length)
-{
-	struct _i2c_m_msg msg;
-	int32_t           ret;
-
-	msg.addr   = i2c->slave_addr;
-	msg.len    = 1;
-	msg.flags  = 0;
-	msg.buffer = &reg;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret != 0) {
-		/* error occurred */
-		return ret;
-	}
-
-	msg.flags  = I2C_M_STOP;
-	msg.buffer = buffer;
-	msg.len    = length;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret != 0) {
-		/* error occurred */
-		return ret;
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Sync version of i2c read command
- */
-int32_t i2c_m_sync_cmd_read(struct i2c_m_sync_desc *i2c, uint8_t reg, uint8_t *buffer, uint8_t length)
-{
-	struct _i2c_m_msg msg;
-	int32_t           ret;
-
-	msg.addr   = i2c->slave_addr;
-	msg.len    = 1;
-	msg.flags  = 0;
-	msg.buffer = &reg;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret != 0) {
-		/* error occurred */
-		return ret;
-	}
-
-	msg.flags  = I2C_M_STOP | I2C_M_RD;
-	msg.buffer = buffer;
-	msg.len    = length;
-
-	ret = _i2c_m_sync_transfer(&i2c->device, &msg);
-
-	if (ret != 0) {
-		/* error occurred */
-		return ret;
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Sync version of i2c transfer command
- */
-int32_t i2c_m_sync_transfer(struct i2c_m_sync_desc *const i2c, struct _i2c_m_msg *msg)
-{
-	return _i2c_m_sync_transfer(&i2c->device, msg);
-}
-
-/**
- * \brief Sync version of i2c send stop condition command
- */
-int32_t i2c_m_sync_send_stop(struct i2c_m_sync_desc *const i2c)
-{
-	return _i2c_m_sync_send_stop(&i2c->device);
-}
-
-/**
- * \brief Retrieve I/O descriptor
- */
-int32_t i2c_m_sync_get_io_descriptor(struct i2c_m_sync_desc *const i2c, struct io_descriptor **io)
-{
-	*io = &i2c->io;
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t i2c_m_sync_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_init.c b/atmel-samd/asf4/samd51/hal/src/hal_init.c
deleted file mode 100644
index bdcf2a409..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_init.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/**
- * \file
- *
- * \brief HAL initialization related functionality implementation.
- *
- * Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_init.h"
-
-/**
- * \brief Driver version
- */
-#define HAL_INIT_VERSION 0x00000001u
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t init_get_version(void)
-{
-	return HAL_INIT_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_io.c b/atmel-samd/asf4/samd51/hal/src/hal_io.c
deleted file mode 100644
index 52638d9b0..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_io.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/**
- * \file
- *
- * \brief I/O functionality implementation.
- *
- * Copyright (C) 2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include <hal_io.h>
-#include <utils_assert.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-uint32_t io_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-/**
- * \brief I/O write interface
- */
-int32_t io_write(struct io_descriptor *const io_descr, const uint8_t *const buf, const uint16_t length)
-{
-	ASSERT(io_descr && buf);
-	return io_descr->write(io_descr, buf, length);
-}
-
-/**
- * \brief I/O read interface
- */
-int32_t io_read(struct io_descriptor *const io_descr, uint8_t *const buf, const uint16_t length)
-{
-	ASSERT(io_descr && buf);
-	return io_descr->read(io_descr, buf, length);
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_pwm.c b/atmel-samd/asf4/samd51/hal/src/hal_pwm.c
deleted file mode 100644
index 2b9d2606f..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_pwm.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/**
- * \file
- *
- * \brief PWM functionality implementation.
- *
- * Copyright (C) 2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_pwm.h"
-#include <utils_assert.h>
-#include <utils.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-static void pwm_period_expired(struct _pwm_device *device);
-static void pwm_detect_fault(struct _pwm_device *device);
-
-/**
- * \brief Initialize pwm
- */
-int32_t pwm_init(struct pwm_descriptor *const descr, void *const hw, struct _pwm_hpl_interface *const func)
-{
-	ASSERT(descr && hw);
-	_pwm_init(&descr->device, hw);
-	descr->device.callback.pwm_period_cb = pwm_period_expired;
-	descr->device.callback.pwm_error_cb  = pwm_detect_fault;
-	return ERR_NONE;
-}
-
-/**
- * \brief Deinitialize pwm
- */
-int32_t pwm_deinit(struct pwm_descriptor *const descr)
-{
-	ASSERT(descr);
-	_pwm_deinit(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Start pwm
- */
-int32_t pwm_enable(struct pwm_descriptor *const descr)
-{
-	ASSERT(descr);
-	if (_pwm_is_enabled(&descr->device)) {
-		return ERR_DENIED;
-	}
-	_pwm_enable(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Stop pwm
- */
-int32_t pwm_disable(struct pwm_descriptor *const descr)
-{
-	ASSERT(descr);
-	if (!_pwm_is_enabled(&descr->device)) {
-		return ERR_DENIED;
-	}
-	_pwm_disable(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Register PWM callback
- */
-int32_t pwm_register_callback(struct pwm_descriptor *const descr, enum pwm_callback_type type, pwm_cb_t cb)
-{
-	switch (type) {
-	case PWM_PERIOD_CB:
-		descr->pwm_cb.period = cb;
-		break;
-
-	case PWM_ERROR_CB:
-		descr->pwm_cb.error = cb;
-		break;
-
-	default:
-		return ERR_INVALID_ARG;
-	}
-	ASSERT(descr);
-	_pwm_set_irq_state(&descr->device, (enum _pwm_callback_type)type, NULL != cb);
-	return ERR_NONE;
-}
-
-/**
- * \brief Change PWM parameter
- */
-int32_t pwm_set_parameters(struct pwm_descriptor *const descr, const pwm_period_t period, const pwm_period_t duty_cycle)
-{
-	ASSERT(descr);
-	_pwm_set_param(&descr->device, period, duty_cycle);
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t pwm_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-/**
- * \internal Process interrupts caused by period experied
- */
-static void pwm_period_expired(struct _pwm_device *device)
-{
-	struct pwm_descriptor *const descr = CONTAINER_OF(device, struct pwm_descriptor, device);
-
-	if (descr->pwm_cb.period) {
-		descr->pwm_cb.period(descr);
-	}
-}
-
-/**
- * \internal Process interrupts caused by pwm fault
- */
-static void pwm_detect_fault(struct _pwm_device *device)
-{
-	struct pwm_descriptor *const descr = CONTAINER_OF(device, struct pwm_descriptor, device);
-
-	if (descr->pwm_cb.error) {
-		descr->pwm_cb.error(descr);
-	}
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_rand_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_rand_sync.c
deleted file mode 100644
index 927bdbeba..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_rand_sync.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/**
- * \file
- *
- * \brief Generic Random Number Generator (RNG) functionality declaration.
- *
- * Copyright (C) 2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include <utils.h>
-#include "hal_rand_sync.h"
-
-#define HAL_RNG_SYNC_VERSION 0x00000001u
-
-int32_t rand_sync_init(struct rand_sync_desc *const desc, void *const hw)
-{
-	ASSERT(desc);
-
-	return _rand_sync_init(&desc->dev, hw);
-}
-
-void rand_sync_deinit(struct rand_sync_desc *const desc)
-{
-	ASSERT(desc);
-	_rand_sync_deinit(&desc->dev);
-}
-
-int32_t rand_sync_enable(struct rand_sync_desc *const desc)
-{
-	ASSERT(desc);
-	return _rand_sync_enable(&desc->dev);
-}
-
-void rand_sync_disable(struct rand_sync_desc *const desc)
-{
-	ASSERT(desc);
-	_rand_sync_disable(&desc->dev);
-}
-
-int32_t rand_sync_set_seed(struct rand_sync_desc *const desc, const uint32_t seed)
-{
-	ASSERT(desc);
-	return _rand_sync_set_seed(&desc->dev, seed);
-}
-
-/**
- * \brief Read data bits
- */
-static uint32_t _rand_sync_read_data(const struct _rand_sync_dev *dev, const uint8_t n_bits)
-{
-	uint8_t r_bits = (dev->n_bits < 1) ? 32 : dev->n_bits;
-	if (r_bits < n_bits) {
-		uint8_t  i;
-		uint32_t d = 0;
-		/* Join read bits */
-		for (i = 0; i < n_bits; i += r_bits) {
-			d |= (uint32_t)(_rand_sync_read_one(dev) << i);
-		}
-		return d;
-	} else {
-		return _rand_sync_read_one(dev);
-	}
-}
-
-uint8_t rand_sync_read8(const struct rand_sync_desc *const desc)
-{
-	ASSERT(desc);
-	return (uint8_t)_rand_sync_read_data(&desc->dev, 8);
-}
-
-uint32_t rand_sync_read32(const struct rand_sync_desc *const desc)
-{
-	ASSERT(desc);
-	return (uint32_t)_rand_sync_read_data(&desc->dev, 32);
-}
-
-void rand_sync_read_buf8(const struct rand_sync_desc *const desc, uint8_t *buf, uint32_t len)
-{
-	uint32_t i;
-	ASSERT(desc && (buf && len));
-	for (i = 0; i < len; i++) {
-		buf[i] = (uint8_t)_rand_sync_read_data(&desc->dev, 8);
-	}
-}
-
-void rand_sync_read_buf32(const struct rand_sync_desc *const desc, uint32_t *buf, uint32_t len)
-{
-	uint32_t i;
-	ASSERT(desc && (buf && len));
-	for (i = 0; i < len; i++) {
-		buf[i] = (uint32_t)_rand_sync_read_data(&desc->dev, 32);
-	}
-}
-
-uint32_t rand_sync_get_version(void)
-{
-	return HAL_RNG_SYNC_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_sleep.c b/atmel-samd/asf4/samd51/hal/src/hal_sleep.c
deleted file mode 100644
index 2d1aadd67..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_sleep.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * \file
- *
- * \brief Sleep related functionality implementation.
- *
- * Copyright (C) 2014 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_sleep.h"
-#include <hpl_sleep.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Set the sleep mode of the device and put the MCU to sleep
- *
- * For an overview of which systems are disabled in sleep for the different
- * sleep modes, see the data sheet.
- *
- * \param[in] mode Sleep mode to use
- *
- * \return The status of a sleep request
- * \retval -1 The requested sleep mode was invalid or not available
- * \retval  0 The operation completed successfully, returned after leaving the
- *            sleep
- */
-int sleep(const uint8_t mode)
-{
-	if (ERR_NONE != _set_sleep_mode(mode))
-		return ERR_INVALID_ARG;
-
-	_go_to_sleep();
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the current driver version
- *
- * \return Current driver version
- */
-uint32_t sleep_get_version(void)
-{
-	return DRIVER_VERSION;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_spi_m_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_spi_m_sync.c
deleted file mode 100644
index 8ceaa9a4a..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_spi_m_sync.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/**
- * \file
- *
- * \brief I/O SPI related functionality implementation.
- *
- * Copyright (C) 2014 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_spi_m_sync.h"
-#include <utils_assert.h>
-#include <utils.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * \brief Driver version
- */
-#define SPI_M_SYNC_DRIVER_VERSION 0x00000001u
-
-#define SPI_DEACTIVATE_NEXT 0x8000
-
-static int32_t _spi_m_sync_io_write(struct io_descriptor *const io, const uint8_t *const buf, const uint16_t length);
-static int32_t _spi_m_sync_io_read(struct io_descriptor *const io, uint8_t *const buf, const uint16_t length);
-
-int32_t spi_m_sync_init(struct spi_m_sync_descriptor *spi, void *const hw)
-{
-	int32_t rc = 0;
-
-	ASSERT(spi && hw);
-
-	spi->dev.prvt = (void *)hw;
-
-	rc = _spi_m_sync_init(&spi->dev, hw);
-	if (rc < 0) {
-		return rc;
-	}
-
-	spi->flags    = SPI_DEACTIVATE_NEXT;
-	spi->io.read  = _spi_m_sync_io_read;
-	spi->io.write = _spi_m_sync_io_write;
-
-	return ERR_NONE;
-}
-
-void spi_m_sync_deinit(struct spi_m_sync_descriptor *spi)
-{
-	ASSERT(spi);
-
-	_spi_m_sync_deinit(&spi->dev);
-}
-
-void spi_m_sync_enable(struct spi_m_sync_descriptor *spi)
-{
-	ASSERT(spi);
-
-	_spi_m_sync_enable(&spi->dev);
-}
-
-void spi_m_sync_disable(struct spi_m_sync_descriptor *spi)
-{
-	ASSERT(spi);
-
-	_spi_m_sync_disable(&spi->dev);
-}
-
-int32_t spi_m_sync_set_baudrate(struct spi_m_sync_descriptor *spi, const uint32_t baud_val)
-{
-	ASSERT(spi);
-
-	return _spi_m_sync_set_baudrate(&spi->dev, baud_val);
-}
-
-int32_t spi_m_sync_set_mode(struct spi_m_sync_descriptor *spi, const enum spi_transfer_mode mode)
-{
-	ASSERT(spi);
-
-	return _spi_m_sync_set_mode(&spi->dev, mode);
-}
-
-int32_t spi_m_sync_set_char_size(struct spi_m_sync_descriptor *spi, const enum spi_char_size char_size)
-{
-	ASSERT(spi);
-
-	return _spi_m_sync_set_char_size(&spi->dev, char_size);
-}
-
-int32_t spi_m_sync_set_data_order(struct spi_m_sync_descriptor *spi, const enum spi_data_order dord)
-{
-	ASSERT(spi);
-
-	return _spi_m_sync_set_data_order(&spi->dev, dord);
-}
-
-/** \brief Do SPI read in polling way
- *  For SPI master, activate CS, do send 0xFFs and read data, deactivate CS.
- *
- *  It blocks until all data read or error.
- *
- *  \param[in, out] spi Pointer to the HAL SPI instance.
- *  \param[out] buf Pointer to the buffer to store read data.
- *  \param[in] size Size of the data in number of characters.
- *  \return Operation status.
- *  \retval size Success.
- *  \retval >=0 Time out, with number of characters read.
- */
-static int32_t _spi_m_sync_io_read(struct io_descriptor *io, uint8_t *buf, const uint16_t length)
-{
-	ASSERT(io);
-
-	struct spi_m_sync_descriptor *spi = CONTAINER_OF(io, struct spi_m_sync_descriptor, io);
-	struct spi_xfer               xfer;
-
-	xfer.rxbuf = buf;
-	xfer.txbuf = 0;
-	xfer.size  = length;
-
-	return spi_m_sync_transfer(spi, &xfer);
-}
-
-/** \brief Do SPI data write in polling way
- *  For SPI master, activate CS, do buffer send and deactivate CS. The data back
- *  is discarded.
- *
- *  The data read back is discarded.
- *
- *  It blocks until all data sent or error.
- *
- *  \param[in, out] spi Pointer to the HAL SPI instance.
- *  \param[in] p_xfer Pointer to the transfer information (\ref spi_transfer).
- *  \return Operation status.
- *  \retval size Success.
- *  \retval >=0 Timeout, with number of characters transferred.
- */
-static int32_t _spi_m_sync_io_write(struct io_descriptor *const io, const uint8_t *const buf, const uint16_t length)
-{
-	ASSERT(io);
-
-	struct spi_m_sync_descriptor *spi = CONTAINER_OF(io, struct spi_m_sync_descriptor, io);
-	struct spi_xfer               xfer;
-
-	xfer.rxbuf = 0;
-	xfer.txbuf = (uint8_t *)buf;
-	xfer.size  = length;
-
-	return spi_m_sync_transfer(spi, &xfer);
-}
-
-int32_t spi_m_sync_transfer(struct spi_m_sync_descriptor *spi, const struct spi_xfer *p_xfer)
-{
-	struct spi_msg msg;
-
-	ASSERT(spi && p_xfer);
-
-	msg.txbuf = p_xfer->txbuf;
-	msg.rxbuf = p_xfer->rxbuf;
-	msg.size  = p_xfer->size;
-
-	return _spi_m_sync_trans(&spi->dev, &msg);
-}
-
-int32_t spi_m_sync_get_io_descriptor(struct spi_m_sync_descriptor *const spi, struct io_descriptor **io)
-{
-	ASSERT(spi && io);
-	*io = &spi->io;
-	return 0;
-}
-
-uint32_t spi_m_sync_get_version(void)
-{
-	return SPI_M_SYNC_DRIVER_VERSION;
-}
-
-#ifdef __cplusplus
-}
-#endif
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_timer.c b/atmel-samd/asf4/samd51/hal/src/hal_timer.c
deleted file mode 100644
index db0bbb8da..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_timer.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/**
- * \file
- *
- * \brief Timer functionality implementation.
- *
- * Copyright (C) 2014 - 2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_timer.h"
-#include <utils_assert.h>
-#include <utils.h>
-#include <hal_atomic.h>
-#include <hpl_irq.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-/**
- * \brief Timer flags
- */
-#define TIMER_FLAG_QUEUE_IS_TAKEN 1
-#define TIMER_FLAG_INTERRUPT_TRIGERRED 2
-
-static void timer_add_timer_task(struct list_descriptor *list, struct timer_task *const new_task, const uint32_t time);
-static void timer_process_counted(struct _timer_device *device);
-
-/**
- * \brief Initialize timer
- */
-int32_t timer_init(struct timer_descriptor *const descr, void *const hw, struct _timer_hpl_interface *const func)
-{
-	ASSERT(descr && hw);
-	_timer_init(&descr->device, hw);
-	descr->time                           = 0;
-	descr->device.timer_cb.period_expired = timer_process_counted;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Deinitialize timer
- */
-int32_t timer_deinit(struct timer_descriptor *const descr)
-{
-	ASSERT(descr);
-	_timer_deinit(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Start timer
- */
-int32_t timer_start(struct timer_descriptor *const descr)
-{
-	ASSERT(descr);
-	if (_timer_is_started(&descr->device)) {
-		return ERR_DENIED;
-	}
-	_timer_start(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Stop timer
- */
-int32_t timer_stop(struct timer_descriptor *const descr)
-{
-	ASSERT(descr);
-	if (!_timer_is_started(&descr->device)) {
-		return ERR_DENIED;
-	}
-	_timer_stop(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set amount of clock cycler per timer tick
- */
-int32_t timer_set_clock_cycles_per_tick(struct timer_descriptor *const descr, const uint32_t clock_cycles)
-{
-	ASSERT(descr);
-	_timer_set_period(&descr->device, clock_cycles);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Add timer task
- */
-int32_t timer_add_task(struct timer_descriptor *const descr, struct timer_task *const task)
-{
-	ASSERT(descr && task);
-
-	descr->flags |= TIMER_FLAG_QUEUE_IS_TAKEN;
-	if (is_list_element(&descr->tasks, task)) {
-		descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN;
-		ASSERT(false);
-		return ERR_ALREADY_INITIALIZED;
-	}
-	task->time_label = descr->time;
-	timer_add_timer_task(&descr->tasks, task, descr->time);
-
-	descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN;
-	if (descr->flags & TIMER_FLAG_INTERRUPT_TRIGERRED) {
-		CRITICAL_SECTION_ENTER()
-		descr->flags &= ~TIMER_FLAG_INTERRUPT_TRIGERRED;
-		_timer_set_irq(&descr->device);
-		CRITICAL_SECTION_LEAVE()
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Remove timer task
- */
-int32_t timer_remove_task(struct timer_descriptor *const descr, const struct timer_task *const task)
-{
-	ASSERT(descr && task);
-
-	descr->flags |= TIMER_FLAG_QUEUE_IS_TAKEN;
-	if (!is_list_element(&descr->tasks, task)) {
-		descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN;
-		ASSERT(false);
-		return ERR_NOT_FOUND;
-	}
-	list_delete_element(&descr->tasks, task);
-
-	descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN;
-	if (descr->flags & TIMER_FLAG_INTERRUPT_TRIGERRED) {
-		CRITICAL_SECTION_ENTER()
-		descr->flags &= ~TIMER_FLAG_INTERRUPT_TRIGERRED;
-		_timer_set_irq(&descr->device);
-		CRITICAL_SECTION_LEAVE()
-	}
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the amount of clock cycles in a tick
- */
-int32_t timer_get_clock_cycles_in_tick(const struct timer_descriptor *const descr, uint32_t *const cycles)
-{
-	ASSERT(descr && cycles);
-	*cycles = _timer_get_period(&descr->device);
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t timer_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-/**
- * \internal Insert a timer task into sorted timer's list
- *
- * \param[in] head The pointer to the head of timer task list
- * \param[in] task The pointer to task to add
- * \param[in] time Current timer time
- */
-static void timer_add_timer_task(struct list_descriptor *list, struct timer_task *const new_task, const uint32_t time)
-{
-	struct timer_task *it, *prev = NULL, *head = (struct timer_task *)list_get_head(list);
-
-	if (!head) {
-		list_insert_as_head(list, new_task);
-		return;
-	}
-
-	for (it = head; it; it = (struct timer_task *)list_get_next_element(it)) {
-		uint32_t time_left;
-
-		if (it->time_label <= time) {
-			time_left = it->interval - (time - it->time_label);
-		} else {
-			time_left = it->interval - (0xFFFFFFFF - it->time_label) - time;
-		}
-		if (time_left >= new_task->interval)
-			break;
-		prev = it;
-	}
-
-	if (it == head) {
-		list_insert_as_head(list, new_task);
-	} else {
-		list_insert_after(prev, new_task);
-	}
-}
-
-/**
- * \internal Process interrupts
- */
-static void timer_process_counted(struct _timer_device *device)
-{
-	#pragma GCC diagnostic push
-	#pragma GCC diagnostic ignored "-Wcast-align"
-	struct timer_descriptor *timer = CONTAINER_OF(device, struct timer_descriptor, device);
-	#pragma GCC diagnostic pop
-	struct timer_task *      it    = (struct timer_task *)list_get_head(&timer->tasks);
-	uint32_t                 time  = ++timer->time;
-
-	if ((timer->flags & TIMER_FLAG_QUEUE_IS_TAKEN) || (timer->flags & TIMER_FLAG_INTERRUPT_TRIGERRED)) {
-		timer->flags |= TIMER_FLAG_INTERRUPT_TRIGERRED;
-		return;
-	}
-
-	while (it && ((time - it->time_label) >= it->interval)) {
-		struct timer_task *tmp = it;
-
-		list_remove_head(&timer->tasks);
-		if (TIMER_TASK_REPEAT == tmp->mode) {
-			tmp->time_label = time;
-			timer_add_timer_task(&timer->tasks, tmp, time);
-		}
-		it = (struct timer_task *)list_get_head(&timer->tasks);
-
-		tmp->cb(tmp);
-	}
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_usart_sync.c b/atmel-samd/asf4/samd51/hal/src/hal_usart_sync.c
deleted file mode 100644
index ccc832db8..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_usart_sync.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/**
- * \file
- *
- * \brief I/O USART related functionality implementation.
- *
- * Copyright (C) 2014 - 2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_usart_sync.h"
-#include <utils_assert.h>
-#include <utils.h>
-
-/**
- * \brief Driver version
- */
-#define DRIVER_VERSION 0x00000001u
-
-static int32_t usart_sync_write(struct io_descriptor *const io_descr, const uint8_t *const buf, const uint16_t length);
-static int32_t usart_sync_read(struct io_descriptor *const io_descr, uint8_t *const buf, const uint16_t length);
-
-/**
- * \brief Initialize usart interface
- */
-int32_t usart_sync_init(struct usart_sync_descriptor *const descr, void *const hw, void *const func)
-{
-	int32_t init_status;
-	ASSERT(descr && hw);
-	init_status = _usart_sync_init(&descr->device, hw);
-	if (init_status) {
-		return init_status;
-	}
-
-	descr->io.read  = usart_sync_read;
-	descr->io.write = usart_sync_write;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Uninitialize usart interface
- */
-int32_t usart_sync_deinit(struct usart_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	_usart_sync_deinit(&descr->device);
-
-	descr->io.read  = NULL;
-	descr->io.write = NULL;
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Enable usart interface
- */
-int32_t usart_sync_enable(struct usart_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	_usart_sync_enable(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Disable usart interface
- */
-int32_t usart_sync_disable(struct usart_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	_usart_sync_disable(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve I/O descriptor
- */
-int32_t usart_sync_get_io_descriptor(struct usart_sync_descriptor *const descr, struct io_descriptor **io)
-{
-	ASSERT(descr && io);
-
-	*io = &descr->io;
-	return ERR_NONE;
-}
-
-/**
- * \brief Specify action for flow control pins
- */
-int32_t usart_sync_set_flow_control(struct usart_sync_descriptor *const  descr,
-                                    const union usart_flow_control_state state)
-{
-	ASSERT(descr);
-	_usart_sync_set_flow_control_state(&descr->device, state);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart baud rate
- */
-int32_t usart_sync_set_baud_rate(struct usart_sync_descriptor *const descr, const uint32_t baud_rate)
-{
-	ASSERT(descr);
-	_usart_sync_set_baud_rate(&descr->device, baud_rate);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart data order
- */
-int32_t usart_sync_set_data_order(struct usart_sync_descriptor *const descr, const enum usart_data_order data_order)
-{
-	ASSERT(descr);
-	_usart_sync_set_data_order(&descr->device, data_order);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart mode
- */
-int32_t usart_sync_set_mode(struct usart_sync_descriptor *const descr, const enum usart_mode mode)
-{
-	ASSERT(descr);
-	_usart_sync_set_mode(&descr->device, mode);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart parity
- */
-int32_t usart_sync_set_parity(struct usart_sync_descriptor *const descr, const enum usart_parity parity)
-{
-	ASSERT(descr);
-	_usart_sync_set_parity(&descr->device, parity);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart stop bits
- */
-int32_t usart_sync_set_stopbits(struct usart_sync_descriptor *const descr, const enum usart_stop_bits stop_bits)
-{
-	ASSERT(descr);
-	_usart_sync_set_stop_bits(&descr->device, stop_bits);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Set usart character size
- */
-int32_t usart_sync_set_character_size(struct usart_sync_descriptor *const descr, const enum usart_character_size size)
-{
-	ASSERT(descr);
-	_usart_sync_set_character_size(&descr->device, size);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Retrieve the state of flow control pins
- */
-int32_t usart_sync_flow_control_status(const struct usart_sync_descriptor *const descr,
-                                       union usart_flow_control_state *const     state)
-{
-	ASSERT(descr && state);
-	*state = _usart_sync_get_flow_control_state(&descr->device);
-
-	return ERR_NONE;
-}
-
-/**
- * \brief Check if the usart transmitter is empty
- */
-int32_t usart_sync_is_tx_empty(const struct usart_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	return _usart_sync_is_byte_sent(&descr->device);
-}
-
-/**
- * \brief Check if the usart receiver is not empty
- */
-int32_t usart_sync_is_rx_not_empty(const struct usart_sync_descriptor *const descr)
-{
-	ASSERT(descr);
-	return _usart_sync_is_byte_received(&descr->device);
-}
-
-/**
- * \brief Retrieve the current driver version
- */
-uint32_t usart_sync_get_version(void)
-{
-	return DRIVER_VERSION;
-}
-
-/*
- * \internal Write the given data to usart interface
- *
- * \param[in] descr The pointer to an io descriptor
- * \param[in] buf Data to write to usart
- * \param[in] length The number of bytes to write
- *
- * \return The number of bytes written.
- */
-static int32_t usart_sync_write(struct io_descriptor *const io_descr, const uint8_t *const buf, const uint16_t length)
-{
-	uint32_t                      offset = 0;
-	struct usart_sync_descriptor *descr  = CONTAINER_OF(io_descr, struct usart_sync_descriptor, io);
-
-	ASSERT(io_descr && buf && length);
-	while (!_usart_sync_is_byte_sent(&descr->device))
-		;
-	do {
-		_usart_sync_write_byte(&descr->device, buf[offset]);
-		while (!_usart_sync_is_byte_sent(&descr->device))
-			;
-	} while (++offset < length);
-
-	return (int32_t)offset;
-}
-
-/*
- * \internal Read data from usart interface
- *
- * \param[in] descr The pointer to an io descriptor
- * \param[in] buf A buffer to read data to
- * \param[in] length The size of a buffer
- *
- * \return The number of bytes read.
- */
-static int32_t usart_sync_read(struct io_descriptor *const io_descr, uint8_t *const buf, const uint16_t length)
-{
-	uint32_t                      offset = 0;
-	struct usart_sync_descriptor *descr  = CONTAINER_OF(io_descr, struct usart_sync_descriptor, io);
-
-	ASSERT(io_descr && buf && length);
-	do {
-		while (!_usart_sync_is_byte_received(&descr->device))
-			;
-		buf[offset] = _usart_sync_read_byte(&descr->device);
-	} while (++offset < length);
-
-	return (int32_t)offset;
-}
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_usb_device.c b/atmel-samd/asf4/samd51/hal/src/hal_usb_device.c
deleted file mode 100644
index 08ad12a30..000000000
--- a/atmel-samd/asf4/samd51/hal/src/hal_usb_device.c
+++ /dev/null
@@ -1,602 +0,0 @@
-/**
- * \file
- *
- * \brief SAM USB device HAL
- *
- * Copyright (C) 2015-2016 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-
-#include "hal_usb_device.h"
-#include "hal_atomic.h"
-
-#include <string.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** USB device HAL driver version. */
-#define USB_D_VERSION 0x00000001u
-
-/**
- *  Endpoint callbacks for data transfer.
- */
-struct usb_d_ep_callbacks {
-	/** Callback that is invoked when setup packet is received. */
-	usb_d_ep_cb_setup_t req;
-	/** Callback invoked when buffer is done, but last packet is full size
-	 *  packet without ZLP. Return \c true if new transfer has been submitted.
-	 */
-	usb_d_ep_cb_more_t more;
-	/** Callback invoked when transfer is finished/halted/aborted or error
-	 *  occurs.
-	 */
-	usb_d_ep_cb_xfer_t xfer;
-};
-
-/**
- *  Endpoint transfer descriptor header.
- */
-struct usb_ep_xfer_hdr {
-	/** Transfer type, reuse \ref usb_ep_type. */
-	uint8_t type;
-	/** Endpoint address. */
-	uint8_t ep;
-	/** Endpoint state. */
-	uint8_t state;
-	/** Last status code. */
-	uint8_t status;
-};
-
-/**
- *  Transfer descriptor.
- */
-struct usb_ep_xfer {
-	/** General transfer descriptor. */
-	struct usb_ep_xfer_hdr hdr;
-	/** Pointer to data buffer. */
-	uint8_t *buf;
-	/** Transfer size. */
-	uint32_t size;
-	/** Control request packet. */
-	uint8_t req[8];
-};
-
-/**
- *  USB device endpoint descriptor.
- */
-struct usb_d_ep {
-	/** On-going transfer on the endpoint. */
-	struct usb_ep_xfer xfer;
-	/** Endpoint callbacks. */
-	struct usb_d_ep_callbacks callbacks;
-};
-
-/**
- *  USB device HAL driver descriptor.
- */
-struct usb_d_descriptor {
-	/** USB device endpoints. */
-	struct usb_d_ep ep[CONF_USB_D_NUM_EP_SP];
-};
-
-/** The USB HAL driver descriptor instance. */
-static struct usb_d_descriptor usb_d_inst;
-
-/** \brief Find the endpoint.
- * \param[in] ep Endpoint address.
- * \return Index of endpoint descriptor.
- * \retval >=0 The index.
- * \retval <0 Not found (endpoint is not initialized).
- */
-static int8_t _usb_d_find_ep(const uint8_t ep)
-{
-	int8_t i;
-	for (i = 0; i < CONF_USB_D_NUM_EP_SP; i++) {
-		if (usb_d_inst.ep[i].xfer.hdr.ep == ep) {
-			return i;
-		}
-		if (usb_d_inst.ep[i].xfer.hdr.type == USB_EP_XTYPE_CTRL
-		    && (ep & USB_EP_N_MASK) == usb_d_inst.ep[i].xfer.hdr.ep) {
-			return i;
-		}
-	}
-	return -1;
-}
-
-/**
- * \brief Start transactions
- * \param[in] ep Endpoint address.
- * \param[in] dir Endpoint transfer direction.
- * \param[in] buf Pointer to transfer buffer.
- * \param[in] size Transfer size.
- * \param[in] zlp Auto append ZLP for IN, or wait ZLP for OUT.
- */
-static inline int32_t _usb_d_trans(const uint8_t ep, const bool dir, const uint8_t *buf, const uint32_t size,
-                                   const uint8_t zlp)
-{
-	struct usb_d_transfer trans
-	    = {(uint8_t *)buf, size, dir ? (uint8_t)(ep | USB_EP_DIR) : (uint8_t)(ep & USB_EP_N_MASK), zlp};
-
-	return _usb_d_dev_ep_trans(&trans);
-}
-
-/**
- * \brief Dummy callback that returns false
- * \param[in] unused0 Unused parameter.
- * \param[in] unused1 Unused parameter.
- * \param[in] unused2 Unused parameter.
- * \return Always \c false.
- */
-static bool usb_d_dummy_cb_false(uint32_t unused0, uint32_t unused1, uint32_t unused2)
-{
-	(void)unused0;
-	(void)unused1;
-	(void)unused2;
-	return false;
-}
-
-/**
- * \brief Callback invoked when SETUP packet is ready
- * \param[in] ep Endpoint number with transfer direction on bit 8.
- */
-static void usb_d_cb_trans_setup(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	uint8_t *        req      = ept->xfer.req;
-
-	uint8_t n = _usb_d_dev_ep_read_req(ep, req);
-	if (n != 8) {
-		_usb_d_dev_ep_stall(ep, USB_EP_STALL_SET);
-		_usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_SET);
-		return;
-	}
-
-	_usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR);
-	_usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_CLR);
-	ept->xfer.hdr.state = USB_EP_S_IDLE;
-	if (!ept->callbacks.req(ep, req)) {
-		ept->xfer.hdr.state = USB_EP_S_HALTED;
-		_usb_d_dev_ep_stall(ep, USB_EP_STALL_SET);
-		_usb_d_dev_ep_stall(ep | USB_EP_DIR, USB_EP_STALL_SET);
-	}
-}
-
-/**
- * \brief Callback invoked when request more data
- * \param[in] ep Endpoint number with transfer direction on bit 8.
- * \param[in] transfered Number of bytes transfered.
- */
-static bool usb_d_cb_trans_more(const uint8_t ep, const uint32_t transfered)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	if (ept->xfer.hdr.state == USB_EP_S_X_DATA) {
-		return ept->callbacks.more(ep, transfered);
-	}
-	return false;
-}
-
-/**
- * \brief Handles the case that control endpoint transactions are done
- * \param[in,out] ept Pointer to endpoint information.
- */
-static inline void usb_d_ctrl_trans_done(struct usb_d_ep *ept)
-{
-	uint8_t state   = ept->xfer.hdr.state;
-	bool    req_dir = USB_GET_bmRequestType(ept->xfer.req) & USB_REQ_TYPE_IN;
-
-	if (state == USB_EP_S_X_DATA) {
-		/* Data stage -> Status stage */
-		bool err = ept->callbacks.xfer(ept->xfer.hdr.ep, USB_XFER_DATA, ept->xfer.req);
-		if (err) {
-			ept->xfer.hdr.state  = USB_EP_S_HALTED;
-			ept->xfer.hdr.status = USB_XFER_HALT;
-			_usb_d_dev_ep_stall(req_dir ? ept->xfer.hdr.ep : (ept->xfer.hdr.ep | USB_EP_DIR), USB_EP_STALL_SET);
-		} else {
-			ept->xfer.hdr.state = USB_EP_S_X_STATUS;
-			_usb_d_trans(ept->xfer.hdr.ep, !req_dir, NULL, 0, 1);
-		}
-	} else {
-		/* Status stage done */
-		ept->callbacks.xfer(ept->xfer.hdr.ep, USB_XFER_DONE, ept->xfer.req);
-		ept->xfer.hdr.state = USB_EP_S_X_SETUP;
-	}
-}
-
-/**
- * Callback when USB transactions are finished.
- */
-static void _usb_d_cb_trans_done(const uint8_t ep, const int32_t code, const uint32_t transferred)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-
-	if (code == USB_TRANS_DONE) {
-		ept->xfer.hdr.status = USB_XFER_DONE;
-		if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) {
-			usb_d_ctrl_trans_done(ept);
-			return;
-		}
-		ept->xfer.hdr.state = USB_EP_S_IDLE;
-	} else if (code == USB_TRANS_STALL) {
-		ept->xfer.hdr.status = USB_XFER_HALT;
-		if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) {
-			ept->xfer.hdr.state = USB_EP_S_X_SETUP;
-			_usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR);
-		} else {
-			ept->xfer.hdr.state = USB_EP_S_HALTED;
-		}
-	} else if (code == USB_TRANS_ABORT) {
-		ept->xfer.hdr.status = USB_XFER_ABORT;
-		if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) {
-			ept->xfer.hdr.state = USB_EP_S_X_SETUP;
-			return;
-		}
-		ept->xfer.hdr.state = USB_EP_S_IDLE;
-	} else if (code == USB_TRANS_RESET) {
-		ept->xfer.hdr.state  = USB_EP_S_DISABLED;
-		ept->xfer.hdr.status = USB_XFER_RESET;
-	} else {
-		ept->xfer.hdr.state  = USB_EP_S_ERROR;
-		ept->xfer.hdr.status = USB_XFER_ERROR;
-	}
-
-	ept->callbacks.xfer(ep, (enum usb_xfer_code)ept->xfer.hdr.status, (void *)transferred);
-}
-
-int32_t usb_d_init(void)
-{
-	int32_t rc = _usb_d_dev_init();
-	uint8_t i;
-	if (rc < 0) {
-		return rc;
-	}
-	memset(usb_d_inst.ep, 0x00, sizeof(struct usb_d_ep) * CONF_USB_D_NUM_EP_SP);
-	for (i = 0; i < CONF_USB_D_NUM_EP_SP; i++) {
-		usb_d_inst.ep[i].xfer.hdr.ep    = 0xFF;
-		usb_d_inst.ep[i].callbacks.req  = (usb_d_ep_cb_setup_t)usb_d_dummy_cb_false;
-		usb_d_inst.ep[i].callbacks.more = (usb_d_ep_cb_more_t)usb_d_dummy_cb_false;
-		usb_d_inst.ep[i].callbacks.xfer = (usb_d_ep_cb_xfer_t)usb_d_dummy_cb_false;
-	}
-	/* Handles device driver endpoint callbacks to build transfer. */
-	_usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_SETUP, (FUNC_PTR)usb_d_cb_trans_setup);
-	_usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_MORE, (FUNC_PTR)usb_d_cb_trans_more);
-	_usb_d_dev_register_ep_callback(USB_D_DEV_EP_CB_DONE, (FUNC_PTR)_usb_d_cb_trans_done);
-	return ERR_NONE;
-}
-
-void usb_d_deinit(void)
-{
-	_usb_d_dev_deinit();
-}
-
-void usb_d_register_callback(const enum usb_d_cb_type type, const FUNC_PTR func)
-{
-	/* Directly uses device driver callback. */
-	_usb_d_dev_register_callback(type, func);
-}
-
-int32_t usb_d_enable(void)
-{
-	return _usb_d_dev_enable();
-}
-
-void usb_d_disable(void)
-{
-	_usb_d_dev_disable();
-}
-
-void usb_d_attach(void)
-{
-	_usb_d_dev_attach();
-}
-
-void usb_d_detach(void)
-{
-	_usb_d_dev_detach();
-}
-
-enum usb_speed usb_d_get_speed(void)
-{
-	return _usb_d_dev_get_speed();
-}
-
-uint16_t usb_d_get_frame_num(void)
-{
-	return _usb_d_dev_get_frame_n();
-}
-
-uint8_t usb_d_get_uframe_num(void)
-{
-	return _usb_d_dev_get_uframe_n();
-}
-
-void usb_d_set_address(const uint8_t addr)
-{
-	_usb_d_dev_set_address(addr);
-}
-
-void usb_d_send_remotewakeup(void)
-{
-	_usb_d_dev_send_remotewakeup();
-}
-
-int32_t usb_d_ep0_init(const uint8_t max_pkt_size)
-{
-	return usb_d_ep_init(0, USB_EP_XTYPE_CTRL, max_pkt_size);
-}
-
-int32_t usb_d_ep_init(const uint8_t ep, const uint8_t attr, const uint16_t max_pkt_size)
-{
-	int32_t          rc;
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	if (ep_index >= 0) {
-		return -USB_ERR_REDO;
-	} else {
-		ep_index = _usb_d_find_ep(0xFF);
-		if (ep_index < 0) {
-			return -USB_ERR_ALLOC_FAIL;
-		}
-		ept = &usb_d_inst.ep[ep_index];
-	}
-	rc = _usb_d_dev_ep_init(ep, attr, max_pkt_size);
-	if (rc < 0) {
-		return rc;
-	}
-	ept->xfer.hdr.ep   = ep;
-	ept->xfer.hdr.type = attr & USB_EP_XTYPE_MASK;
-	return ERR_NONE;
-}
-
-void usb_d_ep_deinit(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	if (ep_index < 0) {
-		return;
-	}
-	_usb_d_dev_ep_deinit(ep);
-	ept->xfer.hdr.ep = 0xFF;
-}
-
-int32_t usb_d_ep_enable(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	int32_t          rc;
-	if (ep_index < 0) {
-		return -USB_ERR_PARAM;
-	}
-	ept->xfer.hdr.state = (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) ? USB_EP_S_X_SETUP : USB_EP_S_IDLE;
-	rc                  = _usb_d_dev_ep_enable(ep);
-	if (rc < 0) {
-		ept->xfer.hdr.state = USB_EP_S_DISABLED;
-	}
-	return rc;
-}
-
-void usb_d_ep_disable(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	if (ep_index < 0) {
-		return;
-	}
-	_usb_d_dev_ep_disable(ep);
-	ept->xfer.hdr.state = USB_EP_S_DISABLED;
-}
-
-uint8_t *usb_d_ep_get_req(const uint8_t ep)
-{
-	int8_t ep_index = _usb_d_find_ep(ep);
-	if (ep_index < 0) {
-		return NULL;
-	}
-	return usb_d_inst.ep[ep_index].xfer.req;
-}
-
-int32_t usb_d_ep_transfer(const struct usb_d_transfer *xfer)
-{
-	int8_t                ep_index = _usb_d_find_ep(xfer->ep);
-	struct usb_d_ep *     ept      = &usb_d_inst.ep[ep_index];
-	bool                  dir = USB_EP_GET_DIR(xfer->ep), zlp = xfer->zlp;
-	uint32_t              len = xfer->size;
-	int32_t               rc;
-	volatile uint8_t      state;
-	volatile hal_atomic_t flags;
-
-	if (ep_index < 0) {
-		return -USB_ERR_PARAM;
-	}
-
-	atomic_enter_critical(&flags);
-	state = ept->xfer.hdr.state;
-	if (state == USB_EP_S_IDLE) {
-		ept->xfer.hdr.state = USB_EP_S_X_DATA;
-		atomic_leave_critical(&flags);
-	} else {
-		atomic_leave_critical(&flags);
-		switch (state) {
-		case USB_EP_S_HALTED:
-			return USB_HALTED;
-		case USB_EP_S_ERROR:
-			return -USB_ERROR;
-		case USB_EP_S_DISABLED:
-			return -USB_ERR_FUNC;
-		default: /* USB_EP_S_X_xxxx  */
-			return USB_BUSY;
-		}
-	}
-
-	if (ept->xfer.hdr.type == USB_EP_XTYPE_CTRL) {
-		uint16_t req_len = USB_GET_wLength(ept->xfer.req);
-		/* SETUP without data: ZLP IN as status. */
-		if (req_len == 0) {
-			dir                 = true;
-			len                 = 0;
-			zlp                 = true;
-			ept->xfer.hdr.state = USB_EP_S_X_STATUS;
-		} else {
-			dir = (USB_GET_bmRequestType(ept->xfer.req) & USB_REQ_TYPE_IN);
-			/* Data length not exceed requested. */
-			if (len > req_len) {
-				len = req_len;
-			}
-			if (dir) {
-				/* Setup -> In */
-				zlp = (req_len > len);
-			} else {
-				zlp = false;
-			}
-		}
-	}
-
-	rc = _usb_d_trans(xfer->ep, dir, xfer->buf, len, zlp);
-	return rc;
-}
-
-void usb_d_ep_abort(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	if (ep_index < 0) {
-		return;
-	}
-	_usb_d_dev_ep_abort(ep);
-	ept->xfer.hdr.state  = USB_EP_S_IDLE;
-	ept->xfer.hdr.status = USB_XFER_ABORT;
-}
-
-int32_t usb_d_ep_get_status(const uint8_t ep, struct usb_d_ep_status *stat)
-{
-	int8_t                    ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *         ept      = &usb_d_inst.ep[ep_index];
-	struct usb_d_trans_status tmp;
-	uint8_t                   state = ept->xfer.hdr.state;
-	if (ep_index < 0) {
-		return -USB_ERR_PARAM;
-	}
-	if (stat) {
-		/* Check transaction status if transferring data. */
-		_usb_d_dev_ep_get_status(ep, &tmp);
-		stat->ep    = ep;
-		stat->state = state;
-		stat->code  = ept->xfer.hdr.status;
-		stat->count = tmp.count;
-		stat->size  = tmp.size;
-	}
-	switch (state) {
-	case USB_EP_S_IDLE:
-		return USB_OK;
-	case USB_EP_S_HALTED:
-		return USB_HALTED;
-	case USB_EP_S_ERROR:
-		return -USB_ERROR;
-	case USB_EP_S_DISABLED:
-		return -USB_ERR_FUNC;
-	default:
-		/* Busy */
-		return USB_BUSY;
-	}
-}
-
-static inline int32_t _usb_d_ep_halt_clr(const uint8_t ep)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	int32_t          rc;
-	if (ep_index < 0) {
-		return -USB_ERR_PARAM;
-	}
-	if (_usb_d_dev_ep_stall(ep, USB_EP_STALL_GET)) {
-		rc = _usb_d_dev_ep_stall(ep, USB_EP_STALL_CLR);
-		if (rc < 0) {
-			return rc;
-		}
-		ept->xfer.hdr.state  = USB_EP_S_IDLE;
-		ept->xfer.hdr.status = USB_XFER_UNHALT;
-		ept->callbacks.xfer(ep, USB_XFER_UNHALT, NULL);
-	}
-	return ERR_NONE;
-}
-
-int32_t usb_d_ep_halt(const uint8_t ep, const enum usb_ep_halt_ctrl ctrl)
-{
-	if (ctrl == USB_EP_HALT_CLR) {
-		return _usb_d_ep_halt_clr(ep);
-	} else if (ctrl == USB_EP_HALT_SET) {
-		return _usb_d_dev_ep_stall(ep, USB_EP_STALL_SET);
-	} else {
-		return _usb_d_dev_ep_stall(ep, USB_EP_STALL_GET);
-	}
-}
-
-void usb_d_ep_register_callback(const uint8_t ep, const enum usb_d_ep_cb_type type, const FUNC_PTR func)
-{
-	int8_t           ep_index = _usb_d_find_ep(ep);
-	struct usb_d_ep *ept      = &usb_d_inst.ep[ep_index];
-	FUNC_PTR         f        = func ? (FUNC_PTR)func : (FUNC_PTR)usb_d_dummy_cb_false;
-	if (ep_index < 0) {
-		return;
-	}
-	switch (type) {
-	case USB_D_EP_CB_SETUP:
-		ept->callbacks.req = (usb_d_ep_cb_setup_t)f;
-		break;
-	case USB_D_EP_CB_MORE:
-		ept->callbacks.more = (usb_d_ep_cb_more_t)f;
-		break;
-	case USB_D_EP_CB_XFER:
-		ept->callbacks.xfer = (usb_d_ep_cb_xfer_t)f;
-		break;
-	default:
-		break;
-	}
-}
-
-uint32_t usb_d_get_version(void)
-{
-	return USB_D_VERSION;
-}
-
-#ifdef __cplusplus
-}
-#endif