spi.h

ARM7 lpc2100 SPI驱动API,源码有详细注解

extern void  MSpiInit(uint8 Int_SPIx);
extern uint8  MSendData(uint8 Int_SPIx,uint8 data);

#define   HC595_CS0    0x00000100            /*P0.8口为74HC5950的片选*/
#define   HC595_CS1    0x00200000            /*P0.21口为74HC5951的片选*/