/home/travis/build/lis-epfl/MAVRIC_Library/hal/stm32/spi_stm32.hpp

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/*******************************************************************************
 * \file    spi_stm32.hpp
 *
 * \author  MAV'RIC Team
 * \author  Jean-Francois Burnier
 *
 * \brief   Implementation of spi peripheral for stm32
 *
 ******************************************************************************/

#ifndef SPI_STM32_HPP_
#define SPI_STM32_HPP_

#include "hal/common/spi.hpp"
#include "hal/stm32/gpio_stm32.hpp"

extern "C"
{
#include <libopencm3/stm32/spi.h>
}

typedef enum
{
    STM32_SPI1  = SPI1,
    STM32_SPI2  = SPI2,
    STM32_SPI3  = SPI3,
} spi_stm32_devices_t;


typedef enum
{
    STM32_SPI_MODE_CPOL0_CPHA0  = 0,
    STM32_SPI_MODE_CPOL0_CPHA1  = 1,
    STM32_SPI_MODE_CPOL1_CPHA0  = 2,
    STM32_SPI_MODE_CPOL1_CPHA1  = 3,
} spi_stm32_mode_t;

typedef struct
{
    spi_stm32_devices_t     spi_device;         
    spi_stm32_mode_t        mode;               
    uint8_t                 clk_div;            
    bool                    ss_mode_hard;       
    gpio_stm32_conf_t       miso_gpio_config;   
    gpio_stm32_conf_t       mosi_gpio_config;   
    gpio_stm32_conf_t       sck_gpio_config;    
} spi_stm32_conf_t;


class Spi_stm32: public Spi
{
public:

    Spi_stm32(spi_stm32_conf_t spi_config);


    bool init(void);


    bool write(uint8_t* bytes, uint32_t nbytes = 1);


    bool read(uint8_t* in_buffer, uint32_t nbytes = 1);

    bool transfer(uint8_t* out_buffer, uint8_t* in_buffer, uint32_t nbytes);

    void select_slave(void);

    void unselect_slave(void);


private:

    spi_stm32_conf_t            config_;        
    spi_stm32_devices_t         spi_;           

};


#endif /* SPI_STM32_HPP_ */