From b637d3911e71c6136f761960f293954366dd76a1 Mon Sep 17 00:00:00 2001 From: gamblor21 Date: Sat, 24 Oct 2020 20:48:35 -0500 Subject: Initial commit --- shared-module/busdevice/I2CDevice.c | 101 ++++++++++++++++++++++++++++++++++++ shared-module/busdevice/I2CDevice.h | 40 ++++++++++++++ shared-module/busdevice/__init__.c | 0 3 files changed, 141 insertions(+) create mode 100644 shared-module/busdevice/I2CDevice.c create mode 100644 shared-module/busdevice/I2CDevice.h create mode 100644 shared-module/busdevice/__init__.c (limited to 'shared-module') diff --git a/shared-module/busdevice/I2CDevice.c b/shared-module/busdevice/I2CDevice.c new file mode 100644 index 000000000..30f4aad33 --- /dev/null +++ b/shared-module/busdevice/I2CDevice.c @@ -0,0 +1,101 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "shared-bindings/busdevice/I2CDevice.h" +#include "shared-bindings/busio/I2C.h" +#include "py/mperrno.h" +#include "py/nlr.h" + +void common_hal_busdevice_i2cdevice_construct(busdevice_i2cdevice_obj_t *self, busio_i2c_obj_t *i2c, uint8_t device_address, bool probe) { + self->i2c = i2c; + self->device_address = device_address; + self->probe = probe; + + if (self->probe == true) { + common_hal_busdevice_i2cdevice___probe_for_device(self); + } +} + +void common_hal_busdevice_i2cdevice_lock(busdevice_i2cdevice_obj_t *self) { + bool success = false; + while (!success) { + success = common_hal_busio_i2c_try_lock(self->i2c); + } +} + +void common_hal_busdevice_i2cdevice_unlock(busdevice_i2cdevice_obj_t *self) { + common_hal_busio_i2c_unlock(self->i2c); +} + +uint8_t common_hal_busdevice_i2cdevice_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) { + uint8_t status = common_hal_busio_i2c_read(self->i2c, self->device_address, buffer, length); + + return status; +} + +uint8_t common_hal_busdevice_i2cdevice_write(busdevice_i2cdevice_obj_t *self, mp_obj_t buffer, size_t length) { + uint8_t status = common_hal_busio_i2c_write(self->i2c, self->device_address, buffer, length, true); + + return status; +} + +uint8_t common_hal_busdevice_i2cdevice_write_then_readinto(busdevice_i2cdevice_obj_t *self, mp_obj_t out_buffer, mp_obj_t in_buffer, + size_t out_length, size_t in_length) { + uint8_t status = 0; + + status = common_hal_busio_i2c_write(self->i2c, self->device_address, out_buffer, out_length, true); + + status = common_hal_busio_i2c_read(self->i2c, self->device_address, in_buffer, in_length); + + return status; +} + +uint8_t common_hal_busdevice_i2cdevice___probe_for_device(busdevice_i2cdevice_obj_t *self) { + + + + + // write "" + + +/* + while not self.i2c.try_lock(): + pass + try: + self.i2c.writeto(self.device_address, b"") + except OSError: + # some OS's dont like writing an empty bytesting... + # Retry by reading a byte + try: + result = bytearray(1) + self.i2c.readfrom_into(self.device_address, result) + except OSError: + raise ValueError("No I2C device at address: %x" % self.device_address) + finally: + self.i2c.unlock() +*/ + return 0; +} diff --git a/shared-module/busdevice/I2CDevice.h b/shared-module/busdevice/I2CDevice.h new file mode 100644 index 000000000..c872704db --- /dev/null +++ b/shared-module/busdevice/I2CDevice.h @@ -0,0 +1,40 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H +#define MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H + +#include "py/obj.h" +#include "common-hal/busio/I2C.h" + +typedef struct { + mp_obj_base_t base; + busio_i2c_obj_t *i2c; + uint8_t device_address; + bool probe; +} busdevice_i2cdevice_obj_t; + +#endif // MICROPY_INCLUDED_ATMEL_SAMD_SHARED_MODULE_BUSDEVICE_I2CDEVICE_H diff --git a/shared-module/busdevice/__init__.c b/shared-module/busdevice/__init__.c new file mode 100644 index 000000000..e69de29bb -- cgit v1.2.3