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/* Copyright 2020 Nick Brassel (tzarc)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <ch.h>
#include <hal.h>
#include <stdbool.h>
#include "gpio.h"
#include "chibios_config.h"
#ifndef SPI_DRIVER
# define SPI_DRIVER SPID2
#endif
#ifndef SPI_SCK_PIN
# define SPI_SCK_PIN B13
#endif
#ifndef SPI_SCK_PAL_MODE
# if defined(USE_GPIOV1)
# define SPI_SCK_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
# else
# define SPI_SCK_PAL_MODE 5
# endif
#endif
#ifndef SPI_MOSI_PIN
# define SPI_MOSI_PIN B15
#endif
#ifndef SPI_MOSI_PAL_MODE
# if defined(USE_GPIOV1)
# define SPI_MOSI_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
# else
# define SPI_MOSI_PAL_MODE 5
# endif
#endif
#ifndef SPI_MISO_PIN
# define SPI_MISO_PIN B14
#endif
#ifndef SPI_MISO_PAL_MODE
# if defined(USE_GPIOV1)
# define SPI_MISO_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
# else
# define SPI_MISO_PAL_MODE 5
# endif
#endif
typedef int16_t spi_status_t;
#define SPI_STATUS_SUCCESS (0)
#define SPI_STATUS_ERROR (-1)
#define SPI_STATUS_TIMEOUT (-2)
#define SPI_TIMEOUT_IMMEDIATE (0)
#define SPI_TIMEOUT_INFINITE (0xFFFF)
#ifdef __cplusplus
extern "C" {
#endif
void spi_init(void);
bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor);
spi_status_t spi_write(uint8_t data);
spi_status_t spi_read(void);
spi_status_t spi_transmit(const uint8_t *data, uint16_t length);
spi_status_t spi_receive(uint8_t *data, uint16_t length);
void spi_stop(void);
#ifdef __cplusplus
}
#endif
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