ee1036023e
Being able to send data out in LSB format can be useful, and having support in the low-level driver is much better than requiring Python code to reorder the bits before sending them / after receiving them. In particular if the hardware does not support the LSB format (eg RP2040) then one needs to use the SoftSPI in LSB mode. For this change a default definition of `MICROPY_PY_MACHINE_SPI_MSB/_LSB` was added to `py/mpconfig.h`, making them available to all ports. The identical defines in `esp32/mpconfigport.h` were deleted. Resolves issues #5340, #11404. Signed-off-by: robert-hh <robert@hammelrath.com>
57 lines
2.0 KiB
C
57 lines
2.0 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) 2016-2018 Damien P. George
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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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#ifndef MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
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#define MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
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#include "py/mphal.h"
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enum {
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MP_SPI_IOCTL_INIT,
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MP_SPI_IOCTL_DEINIT,
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};
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typedef struct _mp_spi_proto_t {
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int (*ioctl)(void *self, uint32_t cmd);
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void (*transfer)(void *self, size_t len, const uint8_t *src, uint8_t *dest);
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} mp_spi_proto_t;
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typedef struct _mp_soft_spi_obj_t {
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uint32_t delay_half; // microsecond delay for half SCK period
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uint8_t polarity;
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uint8_t phase;
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uint8_t firstbit;
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mp_hal_pin_obj_t sck;
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mp_hal_pin_obj_t mosi;
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mp_hal_pin_obj_t miso;
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} mp_soft_spi_obj_t;
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extern const mp_spi_proto_t mp_soft_spi_proto;
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int mp_soft_spi_ioctl(void *self, uint32_t cmd);
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void mp_soft_spi_transfer(void *self, size_t len, const uint8_t *src, uint8_t *dest);
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#endif // MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
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