spi.h

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/*
 * Copyright 2016 Sebastian Neuser
 *
 * This file is part of the uMIDI firmware.
 *
 * the uMIDI firmware 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.
 *
 * The uMIDI firmware 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 the uMIDI firmware.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _SPI_H
#define _SPI_H


//---------------- includes ----------------//

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

#include "gpio.h"


//---------------- constants ----------------//


//---------------- data types ----------------//

struct spi_config {
    bool                   clk_phase;     
    bool                   clk_polarity;  
    uint8_t                word_length;   
    const struct gpio_pin* clk_pin;       
    const struct gpio_pin* miso_pin;      
    const struct gpio_pin* mosi_pin;      
    const struct gpio_pin* ncs_pin;       
};


//---------------- functions and procedures ----------------//

void init_spi_module(const struct spi_config* config);

uint16_t spi_transceive(uint16_t output);

void spi_select(bool select);




//---------------- EOF ----------------//
#endif // _SPI_H