spi.h

IAR 环境下MEGA16的SPI驱动程序

#ifndef SPI_H
#define SPI_H
#include"config.h"
#define hardwarespi 0

#define  SOFT_SPI_CS_DDR    DDRA_Bit4
#define  SOFT_SPI_CLK_DDR   DDRA_Bit7
#define  SOFT_SPI_DI_DDR    DDRA_Bit6
  

#define  SOFT_SPI_CS       PORTA_Bit4
#define  SOFT_SPI_CLK      PORTA_Bit7
#define  SOFT_SPI_DI       PORTA_Bit6

#define SOFT_SPI_DO_PING   PINA_Bit5

void spi_init(void);
void spi_write(unsigned char data);
unsigned char spi_read(void);
void SPIHiSPD(void);
void spi_write(unsigned char data);

#endif