基于PIC16F876A单片机 AD电压测量程序 3路模拟3路数字....doc

#include /包含单片机内部资源预定义#include_CONFIG(0x3b31);#define uchar unsigned char#define uint unsigned int uint led_ct=0;/led状态存储#define RXMAX 64 /长度64位unsigned char pRx,RxBufRXMAX;/就收缓存函数 /延时函数void delay(uint x)uint a,b;for(a=x;a0;a-)for(b=110;b0;b-); /初始化函数 void init()TRISA=0XFF; ADCON1=0x80;/ADCON0=0x41; TRISC=0XCF; /设置C口方向全为输出 1100 0111 RC7 RC6串口模式必须设置为输出 SPBRG=25; /设置波特率TXSTA=0X24; /使能串口发送，选择高速波特率RCSTA=0X90; /使能串口工作，连续接收RCIE=1; /使能接收中断GIE=1; /开放全局中断PEIE=1; /使能外部中断 delay(10); /接受中断函数void interrupt com(void)if(RCIE&RCIF)/判断是否为串口接收中断if(pRxRXMAX) RxBufpRx+=RCREG;RCIF=0;/*=命令代码处理函数=*/*等待pRx（接收字节数）到某个数目，最多等待200ms.return:0=ok,1=error*/unsigned char delay4bytes(unsigned char n)unsigned char nms=0;while(pRx100) return 1;delay(2);return 0;/清除接受缓存区void clrRxBuf(void)while(pRx) RxBufpRx-=0;RxBuf0=0;pRx=0;uint getad0() /模拟通道1 uint i=0,a,adval0;for(a=0;a30;a+) ADCON0=0x41; /0100 0001 GO=1;delay(1);while(GO);adval0=ADRESH;/00000000 00000011adval0=adval08|ADRESL;/00000011 11111111 adval0=adval0/4; i=i+adval0;adval0=i/30; return (adval0);uint getad1()/模拟通道2uint i=0,a,adval1;for(a=0;a30;a+) ADCON0=0x49; /0100 1001 GO=1;delay(1);while(GO);adval1=ADRESH;/00000000 00000011adval1=adval18|ADRESL;/00000011 11111111 adval1=adval1/4; i=i+adval1;adval1=i/30; return (adval1);uint getad2()/模拟通道3uint i=0,a,adval2;for(a=0;a30;a+) ADCON0=0x51; /0100 0001 GO=1;delay(1);while(GO);adval2=ADRESH;/00000000 00000011adval2=adval28|ADRESL;/00000011 11111111 adval2=adval2/4; i=i+adval2;adval2=i/30; return (adval2);uint getad3()/数字通道1 uint adval3; if(RC1=1)adval3=0xAA; if(RC1=0) adval3=0x00;return (adval3);uint getad4()/数字通道2 uint adval4; if(RC2=1)adval4=0xAA; if(RC2=0) adval4=0x00;return (adval4); uint getad5()/数字通道3 uint adval5; if(RC3=1)adval5=0xAA; if(RC3=0) adval5=0x00;return (adval5); void main() int temp6; init(); while(1) /等待中断 led_ct+; if(led_ct50) RC4=0; else if(led_ct100) RC4=1; else led_ct=0;/依据led变量的状态，改变led控制脚if(pRx)/如果有接收字节if(RxBuf0=0xab)if(!delay4bytes(2)/等待接收到5个字节,如果超时则不处理，清除缓冲区if(RxBuf1=0x42) while(1)while(GO)ADCON0=0x41;delay(1); temp0=getad0(); delay(10); while(GO)ADCON0=0x49;delay(1); temp1=getad1();delay(1); while(GO)ADCON0=0x51;delay(1); temp2=getad2();delay(1);temp3=getad3();delay(1);temp4=getad4();delay(1);temp5=getad5();delay(1);TXREG=79;delay(1);TXREG=75;delay(1); TXREG=temp0;delay(1); TXREG=temp1;delay(1); TXREG=temp2;delay(1); TXREG=temp3;delay(1); TXREG=temp4;delay(1); TXREG=temp5;delay(1); clrRxBuf(); delay(500