circuitpython/esp8266/common-hal/nativeio/I2C.c
Scott Shawcroft 26229efe78 Add try_lock and unlock to I2C and SPI classes to make sure things
are shared well between threads and underlying MicroPython (SPI Flash
for example.)

It is recommended to use the bus device classes to manage the locks
and other transaction state.

https://github.com/adafruit/Adafruit_MicroPython_BusDevice

Fixed #58
Fixed #59
Fixed #60
2016-12-02 15:46:12 -08:00

63 lines
2.2 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Scott Shawcroft
*
* 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/nativeio/I2C.h"
#include "py/nlr.h"
void common_hal_nativeio_i2c_construct(nativeio_i2c_obj_t *self,
const mcu_pin_obj_t* scl, const mcu_pin_obj_t* sda, uint32_t freq) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"No hardware support for I2C. Use bitbangio instead."));
}
void common_hal_nativeio_i2c_deinit(nativeio_i2c_obj_t *self) {
}
bool common_hal_nativeio_i2c_probe(nativeio_i2c_obj_t *self, uint8_t addr) {
return false;
}
bool common_hal_nativeio_i2c_try_lock(nativeio_i2c_obj_t *self) {
return false;
}
bool common_hal_nativeio_i2c_has_lock(nativeio_i2c_obj_t *self) {
return false;
}
void common_hal_nativeio_i2c_unlock(nativeio_i2c_obj_t *self) {
}
bool common_hal_nativeio_i2c_write(nativeio_i2c_obj_t *self, uint16_t addr,
const uint8_t * data, size_t len, bool transmit_stop_bit) {
return false;
}
bool common_hal_nativeio_i2c_read(nativeio_i2c_obj_t *self, uint16_t addr,
uint8_t * data, size_t len) {
return false;
}