DAC908单片机驱动程序

单片机驱动DAC908程序 #include"includes.h" unsigned char i=0; unsigned char flag; void mydelay(unsigned int j) { unsigned int i; for(i=0;i<j;i++); } void dac_senddata(unsigned char da) //向DAC908发送数据 { P0=da; CLK=0; CLK=1; CLK=0; } void Dac_output() interrupt 5 using 0 { TF2=0; if(flag==0) { i+=4; if(i>=128) { flag=1; i=128; } } else if(flag==1) { i-=4; if(i<=0) { flag=0; i=0; } } dac_senddata(i); }