mcu-fpga.zip

#include<reg52.h> sbit adcs=P1^7; sbit adclk=P1^5; sbit addin=P1^6; #define CS0 adcs=0 #define CS1 adcs=1 #define DCLK0 adclk=0 #define DCLK1 adclk=1 #define DOUT (P2&((unsigned int)(1<<3))) unsigned long recive_data(); void main() { unsigned long re_data; re_data=recive_data(); } unsigned long recive_data() { unsigned char i; // unsigned long temp = 0 ; unsigned long re_buf = 0; DCLK0; CS1; CS0; for(i=0;i<24;i++) { re_buf <<= 1 ; DCLK1; DCLK0; if(DOUT) re_buf ++ ; //模拟SPI串行接口 接收数据 } DCLK1; DCLK0; CS1; return re_buf; }