pios_spislave.h

Go to the documentation of this file.

/*
 * 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 <http://www.gnu.org/licenses/>
 */

#ifndef PIOS_SPISLAVE_PRIV_H
#define PIOS_SPISLAVE_PRIV_H

#include <pios.h>
#include <pios_stm32.h>
#include "pios_semaphore.h"

typedef struct pios_spislave_dev * spislave_t;

struct pios_spislave_cfg {
        SPI_TypeDef *regs;
        uint32_t remap;                         /* GPIO_Remap_* or GPIO_AF_* */
        SPI_InitTypeDef init;
        struct stm32_gpio sclk, miso, mosi, ssel;

        struct stm32_dma_chan rx_dma, tx_dma;

        uint8_t max_rx_len;

        void (*process_message)(void *ctx, int len, int *resp_len);

        void *ctx;
};

int32_t PIOS_SPISLAVE_Init(spislave_t *spislave_id,
                const struct pios_spislave_cfg *cfg,
                int initial_tx_size);
int32_t PIOS_SPISLAVE_PollSS(spislave_t spislave_dev);

#endif /* PIOS_SPISLAVE_PRIV_H */