nes-proj/platform/stepper-robot/sam7s-spi.h

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#ifndef __CORE_SPI_H__KBMMOKI6CG__
#define __CORE_SPI_H__KBMMOKI6CG__
#include <stdint.h>
void
spi_init();
#define SPI_POLARITY_INACTIVE_HIGH 1
#define SPI_POLARITY_INACTIVE_LOW 1
#define SPI_PHASE_CHANGE_CAPTURE 0
#define SPI_PHASE_CAPTURE_CHANGE 1
struct spi_block {
const uint8_t *send; /* NULL for receive only */
uint8_t *receive; /* NULL for send only */
uint16_t len; /* transfer length, non-zero */
};
void
spi_transfer(unsigned int chip, const struct spi_block *block, unsigned int blocks);
void
spi_init_chip_select(unsigned int chip, unsigned int speed,
unsigned int dlybct,
unsigned int dlybs, unsigned int phase,
unsigned int polarity);
#endif /* __CORE_SPI_H__KBMMOKI6CG__ */