26229efe78
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
69 lines
3.1 KiB
C
69 lines
3.1 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Scott Shawcroft
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// Machine is the HAL for low-level, hardware accelerated functions. It is not
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// meant to simplify APIs, its only meant to unify them so that other modules
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// do not require port specific logic.
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//
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// This file includes externs for all functions a port should implement to
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// support the machine module.
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#ifndef __MICROPY_INCLUDED_SHARED_BINDINGS_NATIVEIO_I2C_H__
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#define __MICROPY_INCLUDED_SHARED_BINDINGS_NATIVEIO_I2C_H__
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#include "py/obj.h"
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#include "common-hal/microcontroller/types.h"
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#include "common-hal/nativeio/types.h"
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// Type object used in Python. Should be shared between ports.
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extern const mp_obj_type_t nativeio_i2c_type;
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// Initializes the hardware peripheral.
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extern void common_hal_nativeio_i2c_construct(nativeio_i2c_obj_t *self,
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const mcu_pin_obj_t * scl,
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const mcu_pin_obj_t * sda,
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uint32_t frequency);
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extern void common_hal_nativeio_i2c_deinit(nativeio_i2c_obj_t *self);
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extern bool common_hal_nativeio_i2c_try_lock(nativeio_i2c_obj_t *self);
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extern bool common_hal_nativeio_i2c_has_lock(nativeio_i2c_obj_t *self);
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extern void common_hal_nativeio_i2c_unlock(nativeio_i2c_obj_t *self);
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// Probe the bus to see if a device acknowledges the given address.
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extern bool common_hal_nativeio_i2c_probe(nativeio_i2c_obj_t *self, uint8_t addr);
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extern bool common_hal_nativeio_i2c_write(nativeio_i2c_obj_t *self, uint16_t address,
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const uint8_t * data, size_t len,
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bool stop);
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// Reads memory of the i2c device picking up where it left off.
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extern bool common_hal_nativeio_i2c_read(nativeio_i2c_obj_t *self, uint16_t address,
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uint8_t * data, size_t len);
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#endif // __MICROPY_INCLUDED_SHARED_BINDINGS_NATIVEIO_I2C_H__
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