stc系列单片机串口通信的总结

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1、串口通信：软件调试，在调试过程中需要使用虚拟串口助手。在编程中注意设计时钟和波特率。注意程序的串口设置和串口调试助手中串口设置相同。单串口：modecom29600,0,8,1assigncom2soutstime=0多串口：modecom29600,0,8,1assigncom2s0out0表示单片机的串口0编程：STC12介绍的方法：接收一个字节的函数和发送字符串的函数，发送字符串需要知道字符串的长度。对于接收字符串的函数，可以仿照通过调用接收一个字节的函数，写出接收字符串函数。voidWriteUart(uch

2、ar*pucData,ucharucLength){if(ucLength==0){return;}if(UartBuzy==1)return;ucSendLength=ucLength;pucSendData=pucData;SBUF=*pucSendData;UartBuzy=1;ucSendedCount=0;}ucharReadUart(void){ucharData;Data=ucRecData;ucRecData=0;returnData;}UnsignedcharRString(unsignedchar*s,unsigned

3、intlen){Unsignedinti;For(i=0;i

4、teeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,MinistersandvoidUartIRQ(void)interrupt4{if(RI){RI=0;ucRe

5、cData=SBUF;}if(TI){TI=0;ucSendedCount++;if(ucSendedCount>=ucSendLength){UartBuzy=0;return;}else{SBUF=*(pucSendData+ucSendedCount);}}}STC15:STC15只给出了发送函数，且发送函数有瑕疵，具体见最后分析。voidUART1_ISR(void)interrupt4using1{if(RI)//接收数据{RI=0;//清除RI位}if(TI)//发送数据{TI=0;//清除TI位busy=0;//清忙标志}}

6、voidSendData(unsignedchardat){while(busy);//等待前面的数据发送完成busy=1;SBUF=dat;//写数据到UART数据寄存器}voidSendString(char*s){otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderof

7、theWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Mini

8、stersandwhile(*s)//检测字符串结束标志{SendData(*s++);//发送当前字符}}SendString（）字符串函数，当遇到发送的字符串里面有0x00就会终止，实用性