基于TMS320LF2407A的SPI.rar_2407_2407 SPI_TMS320LF2407_f2407A_spi 24

#include "LF2407REGS.h" #include "Decode.c" #define uchar unsigned char #define uint unsigned int //#include "scancodes.h" //unsigned int spibuf = 0; //unsigned int spibuf_fan=0; //unsigned int SPI_rxbuf[100]; unsigned int SPI_rxbufindex; unsigned char SPI_rxbufindex1; void SPIInit(void) { asm(" SETC INTM"); SPICCR = 0x4A; //SPI SW RESET = 0;CLOCK POLARITY = 1;LENTH = 11; SPICTL = 0x0B; //OVERRUN INT ENA = 1;CLOCK PHASE = 1;TALK = 1;SPI INT ENA = 1; SPISTS = 0xFF; //CLEAR SPISTS; SPIPRI = 0x30; //SPI PRIORITY = 1;CLOCK POLARITY = 0;LENTH = 11; SPICCR = 0xCA; //SPI SW RESET = 1; asm(" CLRC INTM"); } void DSPInit(void) { asm(" SETC INTM"); MCRB = 0x3C; //I/O port = SPI function; IMR = 0x11; //open INT5 and INT1; SCSR1=0x81FE; asm(" CLRC INTM"); } void interrupt nothing() {return;} uint vert_byte(uint word) { uint i,j; uint Ttemp,wordL,wordH; wordL=0; wordH=0; for(i=0,j=1;i<4;i++,j++) { Ttemp=word&(0x01<<i); wordL=wordL|(Ttemp<<(9-2*j)); } for(i=4,j=1;i<8;i++,j++) { Ttemp=word&(0x01<<i); wordH=wordH|(Ttemp>>(2*j-1)); } word=wordL|wordH; return(word); } void interrupt spiint() { if(PIVR==5) //SPI interrupt { if(SPISTS&0x40) //SPI int flag //SPI_rxbufindex =SPIRXBUF & 0xffff; SPI_rxbufindex = vert_byte(((SPIRXBUF & 0x03fc)>>2)); //while(SPI_rxbufindex!=0x00f0) SPI_rxbufindex1=Decode(SPI_rxbufindex); } } void main(void) { DSPInit(); SPIInit(); // serial_init (SPI_rxbufindex1); // putbyte() while(1) SPITXBUF = 0XFFFF; }