You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
circuitpython/drivers/bus/spi.h

55 lines
2.0 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016-2018 Damien P. George
*
* 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_DRIVERS_BUS_SPI_H
#define MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
#include "py/mphal.h"
enum {
MP_SPI_IOCTL_INIT,
MP_SPI_IOCTL_DEINIT,
};
typedef struct _mp_spi_proto_t {
int (*ioctl)(void *self, uint32_t cmd);
void (*transfer)(void *self, size_t len, const uint8_t *src, uint8_t *dest);
} mp_spi_proto_t;
typedef struct _mp_soft_spi_obj_t {
uint32_t delay_half; // microsecond delay for half SCK period
uint8_t polarity;
uint8_t phase;
mp_hal_pin_obj_t sck;
mp_hal_pin_obj_t mosi;
mp_hal_pin_obj_t miso;
} mp_soft_spi_obj_t;
extern const mp_spi_proto_t mp_soft_spi_proto;
int mp_soft_spi_ioctl(void *self, uint32_t cmd);
void mp_soft_spi_transfer(void *self, size_t len, const uint8_t *src, uint8_t *dest);
#endif // MICROPY_INCLUDED_DRIVERS_BUS_SPI_H