1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2016-2018 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26#ifndef MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
27#define MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
28
29#include "py/mphal.h"
30
31enum {
32 MP_SPI_IOCTL_INIT,
33 MP_SPI_IOCTL_DEINIT,
34};
35
36typedef struct _mp_spi_proto_t {
37 int (*ioctl)(void *self, uint32_t cmd);
38 void (*transfer)(void *self, size_t len, const uint8_t *src, uint8_t *dest);
39} mp_spi_proto_t;
40
41typedef struct _mp_soft_spi_obj_t {
42 uint32_t delay_half; // microsecond delay for half SCK period
43 uint8_t polarity;
44 uint8_t phase;
45 mp_hal_pin_obj_t sck;
46 mp_hal_pin_obj_t mosi;
47 mp_hal_pin_obj_t miso;
48} mp_soft_spi_obj_t;
49
50extern const mp_spi_proto_t mp_soft_spi_proto;
51
52int mp_soft_spi_ioctl(void *self, uint32_t cmd);
53void mp_soft_spi_transfer(void *self, size_t len, const uint8_t *src, uint8_t *dest);
54
55#endif // MICROPY_INCLUDED_DRIVERS_BUS_SPI_H
56