spi.h

TFT-LCD Atmega128 Source Code

#ifndef __SPI_H__
#define __SPI_H__



#define SPI_SPEED_FOSC_DIV_4		0
#define SPI_SPEED_FOSC_DIV_16		1
#define SPI_SPEED_FOSC_DIV_64		2
#define SPI_SPEED_FOSC_DIV_128		3

#define SPI_2X_DISABLE				0
#define SPI_2X_ENABLE				1

#define SPI_MODE0_CPOL0CPHA0		0x00
#define SPI_MODE1_CPOL0CPHA1		0x04
#define SPI_MODE2_CPOL1CPHA0		0x08
#define SPI_MODE3_CPOL1CPHA1		0x0C

extern void SPI_set_speed(unsigned char speed, unsigned option);
extern void SPI_set_mode(unsigned mode);
extern void SPI_init();
extern unsigned char SPI_send_byte(unsigned char data);
extern unsigned char SPI_recv_byte();
extern void SPI_stop();

#endif /* __SPI_H__ */