SPI1.rar_8051 SPI_spi 8051

#include"config.h" #include"port.h" #include<ctype.h> static volatile char SegBuf[8]; static volatile char CursorX; #define STR P1_4 #define LED P1_2 void DispClear(void) { unsigned char i; CursorX = 0; for (i=0;i<8;i++){ SegBuf[i]=0x00; } } void DispInit(void) { DispClear(); TMOD &= 0x0f; TMOD |= 0X10; //TL1=0XFE;//LOW_BYTE(65536UL-CPUCLK/(8*1000)); //扫描频率：75HZ T=0.0133s //TH1=0XFF;//HIGH_BYTE(65536UL-CPUCLK/(8*1000)); TR1 = 1; ET1 = 1; EA = 1; //SPI初始化：中断禁止，MSB， STR = 1; SPCR = 0X53; SPSR &= ~(SPIF|SPWCOL); } static void HC595_write(char d) { SPDAT = d; while(!(SPSR&SPIF)); SPSR&=~SPIF; } void DispCharPut(char c) { char t; code char SegTabDec[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; code char SegTabHex[6]={0x77,0x7c,0x39,0x5e,0x79,0x71}; if(c=='.'){ t=(CursorX-1)&0x07; SegBuf[t]|=0x80; } else{ if(c=='-') t=0x40; else if(c=='r') t=0x50; else if(isdigit(c)) t=SegTabDec[c-'0']; else if(isxdigit(c)) t=SegTabHex[toupper(c)-'A']; else t=0x00; SegBuf[CursorX++]=t; CursorX &= 0x07; } } void DispStrPut(const char *s) { char c; while(1) { c=*s++; if(c=='\0')break; DispCharPut(c); } } void Timer1_ISR(void) interrupt 3 { static unsigned char x =0; static unsigned char dig = 0x01; //LED=!LED; //Timer1重装 //EA=0; TR1=0; TF1=0; TL1=LOW_BYTE(65536UL-CPUCLK/(8*75)); //0XFD; //扫描频率：75HZ TH1=HIGH_BYTE(65536UL-CPUCLK/(8*75)); //0XFD; TR1=1; //EA=1; //向HC595写入数据 STR = 0 ; HC595_write(~SegBuf[x]); HC595_write(dig); STR = 1; //调整坐标位置和位选数据 x++; x&=0x07; dig <<= 1; if(dig==0) dig = 0x01; } void main() { unsigned char x; DispInit(); for(x=0;x<8;x++){ DispCharPut('1'+x); } while(1); }