spi.h

来自「avr单片机atmage16驱动小灯的一些例程 并且包括一些收发数据的程序利用」· C头文件 代码 · 共 29 行

/**
	Autor: Matthias Wei遝r<br>
	Copyright 2005: Matthias Wei遝r<br>
	License: QPL (see license.txt)
*/

#ifndef SPI_H_INCLUDED
#define SPI_H_INCLUDED

#define SPI_SPEED_921KHz		0
#define SPI_SPEED_230KHz		1
#define SPI_SPEED_57KHz			2	
#define SPI_SPEED_28KHz			3

#define SPI_SPEED_HIGH		0
#define SPI_SPEED_LOW		3

void spi_enable(void);
void spi_disable(void);
void spi_reset(void);
void spi_set_speed(unsigned char s);
void spi_clock_pulse(void);
unsigned char spi_transfer_8(unsigned char d);
unsigned char spi_transfer_16(unsigned int d);
unsigned char spi_transfer_32(unsigned long d);


#endif