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#ifndef _H_SPI
#define _H_SPI
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "spi_config.h"
#define DUMMY_DATA 0xff
#ifdef SPI_MSSP1
#define SSPSTAT SSP1STAT
#define SSPSTATbits SSP1STATbits
#define SSPCON1 SSP1CON1
#define SSPCON1bits SSP1CON1bits
#define SSPADD SSP1ADD
#define SSPBUF SSP1BUF
#else
#ifdef SPI_MSSP2
#define SSPSTAT SSP2STAT
#define SSPSTATbits SSP2STATbits
#define SSPCON1 SSP2CON1
#define SSPCON1bits SSP2CON1bits
#define SSPADD SSP2ADD
#define SSPBUF SSP2BUF
#else
#error define either SPI_MSSP1 or SPI_MSSP2
#endif
#endif
#define spi_tx(x) (spi_exchange(x))
#define spi_rx() (spi_exchange(DUMMY_DATA))
void spi_init(void);
uint8_t spi_exchange(uint8_t data);
uint8_t spi_exchange_buffer(uint8_t *in, uint8_t buflen, uint8_t *out);
inline bool spi_is_buffer_full(void);
inline bool spi_has_write_collision_occured(void);
inline void spi_clear_write_collision_status(void);
#endif
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