spi.h

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#pragma once
#include <inttypes.h>
#include "gpio.h"
 
#ifdef __AVR__
#define SPI0 ((hal::spi::SPI_TypeDef *const) & SPCR)
#endif
 
namespace hal {
 
namespace spi {
 
struct SPI_TypeDef {
    volatile uint8_t SPCRx;
    volatile uint8_t SPSRx;
    volatile uint8_t SPDRx;
};
 
struct SPI_InitTypeDef {
    hal::gpio::GPIO_pin miso_pin;
    hal::gpio::GPIO_pin mosi_pin;
    hal::gpio::GPIO_pin sck_pin;
    hal::gpio::GPIO_pin ss_pin;
    uint8_t prescaler;
    uint8_t cpha;
    uint8_t cpol;
};
 
void Init(SPI_TypeDef *const hspi, SPI_InitTypeDef *const conf);
 
uint8_t TxRx(SPI_TypeDef *hspi, uint8_t val);
 
#ifdef __AVR__
static SPI_TypeDef *const TmcSpiBus = SPI0;
#else
static SPI_TypeDef *const TmcSpiBus = nullptr;
#endif
 
}
}