/* spi.h */ #ifndef __SPI_H #define __SPI_H #include "types.h" void init_spi(void); void spi_speedup(void); void spi_write_byte(char byte); char spi_read_byte(void); void spi_write_bytes(char *data, int len); void spi_read_bytes(char *data, int len); void spi_transaction_start(void); void spi_transaction_stop(void); void spi_drain(void); #endif /* __SPI_H */