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Diffstat (limited to 'atmel-samd/asf4/samd21/hal/include/hpl_adc_dma.h')
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1 files changed, 253 insertions, 0 deletions
diff --git a/atmel-samd/asf4/samd21/hal/include/hpl_adc_dma.h b/atmel-samd/asf4/samd21/hal/include/hpl_adc_dma.h new file mode 100644 index 000000000..40ff158d2 --- /dev/null +++ b/atmel-samd/asf4/samd21/hal/include/hpl_adc_dma.h @@ -0,0 +1,253 @@ +/** + * \file + * + * \brief ADC related functionality declaration. + * + * 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 + * + */ + +#ifndef _HPL_ADC_DMA_H_INCLUDED +#define _HPL_ADC_DMA_H_INCLUDED + +/** + * \addtogroup HPL ADC + * + * \section hpl_dma_adc_rev Revision History + * - v1.0.0 Initial Release + * + *@{ + */ + +#include <hpl_adc_sync.h> +#include <hpl_irq.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief ADC device structure + * + * The ADC device structure forward declaration. + */ +struct _adc_dma_device; + +/** + * \brief ADC callback types + */ +enum _adc_dma_callback_type { ADC_DMA_DEVICE_COMPLETE_CB, ADC_DMA_DEVICE_ERROR_CB }; + +/** + * \brief ADC interrupt callbacks + */ +struct _adc_dma_callbacks { + void (*complete)(struct _adc_dma_device *device, const uint16_t data); + void (*error)(struct _adc_dma_device *device); +}; + +/** + * \brief ADC descriptor device structure + */ +struct _adc_dma_device { + struct _adc_dma_callbacks adc_dma_cb; + struct _irq_descriptor irq; + void * hw; +}; + +/** + * \name HPL functions + */ +//@{ +/** + * \brief Initialize synchronous ADC + * + * This function does low level ADC configuration. + * + * param[in] device The pointer to ADC device instance + * param[in] hw The pointer to hardware instance + * + * \return Initialization status + */ +int32_t _adc_dma_init(struct _adc_dma_device *const device, void *const hw); + +/** + * \brief Deinitialize ADC + * + * \param[in] device The pointer to ADC device instance + */ +void _adc_dma_deinit(struct _adc_dma_device *const device); + +/** + * \brief Enable ADC peripheral + * + * \param[in] device The pointer to ADC device instance + * \param[in] channel Channel number + */ +void _adc_dma_enable_channel(struct _adc_dma_device *const device, const uint8_t channel); + +/** + * \brief Disable ADC peripheral + * + * \param[in] device The pointer to ADC device instance + * \param[in] channel Channel number + */ +void _adc_dma_disable_channel(struct _adc_dma_device *const device, const uint8_t channel); + +/** + * \brief Return address of ADC DMA source + * + * \param[in] device The pointer to ADC device instance + * + * \return ADC DMA source address + */ +uint32_t _adc_get_source_for_dma(struct _adc_dma_device *const device); + +/** + * \brief Retrieve ADC conversion data size + * + * \param[in] device The pointer to ADC device instance + * + * \return The data size in bytes + */ +uint8_t _adc_dma_get_data_size(const struct _adc_dma_device *const device); + +/** + * \brief Check if conversion is done + * + * \param[in] device The pointer to ADC device instance + * + * \return The status of conversion + * \retval true The conversion is done + * \retval false The conversion is not done + */ +bool _adc_dma_is_conversion_done(const struct _adc_dma_device *const device); + +/** + * \brief Make conversion + * + * \param[in] device The pointer to ADC device instance + */ +void _adc_dma_convert(struct _adc_dma_device *const device); + +/** + * \brief Set reference source + * + * \param[in] device The pointer to ADC device instance + * \param[in] reference A reference source to set + */ +void _adc_dma_set_reference_source(struct _adc_dma_device *const device, const adc_reference_t reference); + +/** + * \brief Set resolution + * + * \param[in] device The pointer to ADC device instance + * \param[in] resolution A resolution to set + */ +void _adc_dma_set_resolution(struct _adc_dma_device *const device, const adc_resolution_t resolution); + +/** + * \brief Set ADC input source of a channel + * + * \param[in] device The pointer to ADC device instance + * \param[in] pos_input A positive input source to set + * \param[in] neg_input A negative input source to set + * \param[in] channel Channel number + */ +void _adc_dma_set_inputs(struct _adc_dma_device *const device, const adc_pos_input_t pos_input, + const adc_neg_input_t neg_input, const uint8_t channel); + +/** + * \brief Set conversion mode + * + * \param[in] device The pointer to ADC device instance + * \param[in] mode A conversion mode to set + */ +void _adc_dma_set_conversion_mode(struct _adc_dma_device *const device, const enum adc_conversion_mode mode); + +/** + * \brief Set differential mode + * + * \param[in] device The pointer to ADC device instance + * \param[in] channel Channel number + * \param[in] mode A differential mode to set + */ +void _adc_dma_set_channel_differential_mode(struct _adc_dma_device *const device, const uint8_t channel, + const enum adc_differential_mode mode); + +/** + * \brief Set gain + * + * \param[in] device The pointer to ADC device instance + * \param[in] channel Channel number + * \param[in] gain A gain to set + */ +void _adc_dma_set_channel_gain(struct _adc_dma_device *const device, const uint8_t channel, const adc_gain_t gain); + +/** + * \brief Set window mode + * + * \param[in] device The pointer to ADC device instance + * \param[in] mode A mode to set + */ +void _adc_dma_set_window_mode(struct _adc_dma_device *const device, const adc_window_mode_t mode); + +/** + * \brief Set thresholds + * + * \param[in] device The pointer to ADC device instance + * \param[in] low_threshold A lower thresholds to set + * \param[in] up_threshold An upper thresholds to set + */ +void _adc_dma_set_thresholds(struct _adc_dma_device *const device, const adc_threshold_t low_threshold, + const adc_threshold_t up_threshold); + +/** + * \brief Retrieve threshold state + * + * \param[in] device The pointer to ADC device instance + * \param[out] state The threshold state + */ +void _adc_dma_get_threshold_state(const struct _adc_dma_device *const device, adc_threshold_status_t *const state); + +//@} + +#ifdef __cplusplus +} +#endif +/**@}*/ +#endif /* _HPL_ADC_DMA_H_INCLUDED */ |