spi.h

一个通过串口与51通信的AVR的程序,还有一些其实功能

void SPI_int(unsigned char SPI_SPCR,unsigned char SPI_SPI2X);
void SPI_inr();
void SPI_send_c(unsigned char c);
void SPI_send_dat(unsigned char *dat,unsigned char lng);
void SPI_set(unsigned char spi_ctrl_reg,unsigned char double_sel);