AVR單片機(jī)與PC機(jī)串口通訊程序

AVR單片機(jī)與PC機(jī)串口通訊程序AVR單片機(jī)與PC機(jī)串口通訊程序AVR單片機(jī)與PC機(jī)串口通訊程序xxx公司AVR單片機(jī)與PC機(jī)串口通訊程序文件編號(hào)：文件日期：修訂次數(shù)：第1.0次更改批準(zhǔn)審核制定方案設(shè)計(jì)，管理制度Proteus環(huán)境下完成本實(shí)驗(yàn)時(shí),需要roteus中設(shè)COMPIM////-----------------------------------------------------------------#defineF_CPU4000000UL//4M晶振#include<avr/>#include<avr/>#include<util/>#defineINT8Uunsignedchar#defineINT16Uunsignedint//數(shù)字串接收緩沖struct{INT8UBuf_Array[100];//緩沖空間INT8UBuf_Len;//當(dāng)前緩沖長(zhǎng)度}Receive_Buffer;//清空緩沖標(biāo)志INT8UClear_Buffer_Flag=0;//0-9的數(shù)字編碼,最后一位為黑屏constINT8USEG_CODE[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00};char*s="\n",*p;//------------------------------------------------------------------//USART初始化//------------------------------------------------------------------voidInit_USART(){ UCSRB=_BV(RXEN)|_BV(TXEN)|_BV(RXCIE);UCSRC=_BV(URSEL)|_BV(UCSZ1)|_BV(UCSZ0);UBRRL=(F_CPU/9600/16-1)%256;UBRRH=(F_CPU/9600/16-1)/256; }//------------------------------------------------------------------//發(fā)送一個(gè)字符//------------------------------------------------------------------voidPutChar(charc){if(c=='\n')PutChar('\r'); UDR=c; while(!(UCSRA&_BV(UDRE)));}//------------------------------------------------------------------//顯示所接收的數(shù)字字符(數(shù)字字符由PC串口發(fā)送,AVR串口接收)//------------------------------------------------------------------voidShow_Received_Digits(){INT8Ui;for(i=0;i<;i++){PORTC=SEG_CODE[[i]]; _delay_ms(400); }}//------------------------------------------------------------------//主程序//------------------------------------------------------------------intmain(){=0;DDRB=0x00;PORTB=0xFF; DDRC=0xFF;PORTC=0x00; DDRD=0x02;PORTD=0xFF; MCUCR=0x08; GICR=_BV(INT1); Init_USART(); sei(); while(1)Show_Received_Digits();}//-----------------------------------------------------------------//串口接收中斷函數(shù)//-----------------------------------------------------------------ISR(USART_RXC_vect){INT8Uc=UDR;//如果接收到回車換行符則設(shè)置清空緩沖標(biāo)志if(c=='\r'||c=='\n')Clear_Buffer_Flag=1;if(c>='0'&&c<='9'){//如果上次曾收到清空緩沖標(biāo)志，則本次從緩沖開(kāi)始位置存放if(Clear_Buffer_Flag==1){=0;Clear_Buffer_Flag=0;} //緩存新接收的數(shù)字[]=c-'0'; //刷新緩沖長(zhǎng)度（不超過(guò)最大長(zhǎng)度）if<100)++; }}//-----------------------------------------------------------------//INT1中斷函數(shù)(向PC發(fā)送字符串)//-------------------