DDS.rar_DDS 信号 发生_DDS驱动信号_单片机驱动dds

#include <iom128v.h> #include <macros.h> #define uchar unsigned char #define uint unsigned int #pragma data:code const uchar table[]=" SET frequency:"; const uchar table1[]="set output vot:"; void delay(uint ms) { uint i,j; for(i=0;i<ms;i++) { for(j=0;j<1141;j++); } } void write_com(uchar com) { PORTE&=~BIT(5); PORTE&=~BIT(6); PORTB=com; PORTE|=BIT(7); delay(1); PORTE&=~BIT(7); } void write_dat(uchar dat) { PORTE|=BIT(5); PORTE&=~BIT(6); PORTB=dat; PORTE|=BIT(7); delay(1); PORTE&=~BIT(7); } void main() { uchar i; DDRB=0XFF; DDRE|=BIT(5)|BIT(6)|BIT(7); PORTE&=~BIT(7); write_com(0X38); delay(5); write_com(0X01); delay(5); write_com(0X0C); delay(5); write_com(0X06); delay(5); write_com(0X80+0X10); delay(5); for(i=0;i<16;i++) { write_dat(table[i]); delay(5); } write_com(0X80+0X50); delay(5); for(i=0;i<16;i++) { write_dat(table1[i]); delay(5); } for(i=0;i<16;i++) { write_com(0X18); delay(500); } }