spi.h

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/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * spi.h
 * Copyright (C) 2015 Simon Newton
 */

#ifndef FIRMWARE_SRC_SPI_H_
#define FIRMWARE_SRC_SPI_H_

#include <stdbool.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
  SPI_BEGIN_TRANSFER,
  SPI_COMPLETE_TRANSFER
} SPIEventType;

typedef void (*SPI_Callback)(SPIEventType event);

bool SPI_QueueTransfer(const uint8_t *output,
                       unsigned int output_length,
                       uint8_t *input,
                       unsigned int input_length,
                       SPI_Callback callback);
void SPI_Initialize();

void SPI_Tasks();

#ifdef __cplusplus
}
#endif

#endif  // FIRMWARE_SRC_SPI_H_