GC24001/Hardware/hw_spi.h

#ifndef __HW_SPI_H__
#define __HW_SPI_H__

#define HW_SPI_NUMBER   1
#define HW_SPI_DEVICE_NUMBER 3

#define RT_SPI_CPHA     (1<<0)                             /* bit[0]:CPHA, clock phase */
#define RT_SPI_CPOL     (1<<1)                             /* bit[1]:CPOL, clock polarity */
/**
 * At CPOL=0 the base value of the clock is zero
 *  - For CPHA=0, data are captured on the clock's rising edge (low->high transition)
 *    and data are propagated on a falling edge (high->low clock transition).
 *  - For CPHA=1, data are captured on the clock's falling edge and data are
 *    propagated on a rising edge.
 * At CPOL=1 the base value of the clock is one (inversion of CPOL=0)
 *  - For CPHA=0, data are captured on clock's falling edge and data are propagated
 *    on a rising edge.
 *  - For CPHA=1, data are captured on clock's rising edge and data are propagated
 *    on a falling edge.
 */
#define RT_SPI_LSB      (0<<2)                             /* bit[2]: 0-LSB */
#define RT_SPI_MSB      (1<<2)                             /* bit[2]: 1-MSB */


void hw_spi_init(void);
void hw_spi_device_take(int port);
void hw_spi_device_release(int port);
int hw_spi_readwrite(uint8_t port, const uint8_t *cmd, uint8_t *dst, int size);
uint16_t  hw_spi_readwrite_halfword(uint8_t port, uint16_t value);
#endif