字符和数字最好不要混用,容易出错。改这样试试。
- #include<reg52.h>
- #include<string.h>
- sfr AUXR = 0x8E;
- sfr T2H = 0xD6;
- sfr T2L = 0xD7;
- #define uchar unsigned char
- #define uint unsigned int
- sbit power1=P1^2;//继电器端口依次类推
- sbit power2=P1^3;
- sbit power3=P1^4;
- sbit power4=P1^5;
- sbit power5=P2^4;
- uchar temp;
- bit flag;
- void UART_Send_Byte(uchar mydata)//发送一个字节
- {
- SBUF=mydata;
- while(!TI);
- TI=0;
- }
- void UART_Send_Str(uchar *s)//发送字符串
- {
- while (*s)
- {
- UART_Send_Byte(*s++);
- }
- }
- void UartInit(void) //9600bps@11.0592MHz
- {
- SCON = 0x50; //8位数据,可变波特率
- AUXR |= 0x01; //串口1选择定时器2为波特率发生器
- AUXR |= 0x04; //定时器2时钟为Fosc,即1T
- T2L = 0xE0; //设定定时初值
- T2H = 0xFE; //设定定时初值
- AUXR |= 0x10; //启动定时器2
- EA = 1;
- ES = 1;
- }
- void main(void)
- {
- UartInit();
- UART_Send_Str("AT+VERSION");//发送AT指令,测试模块是否正常
- while(1)
- {
- if(flag)
- {
- flag=0;
- if(temp=='2') power1=0; //如果接收到的数据是0x02小灯亮
- else if(temp=='1') power1=1;//否则如果接收到是0x01,则熄灭
- if(temp=='8') power2=0; //
- else if(temp=='4') power2=1;//
- if(temp=='7') power3=0; //
- else if(temp=='9') power3=1;//
- if(temp=='b') power4=0; //
- else if(temp=='a') power4=1;//
- if(temp=='d') power5=0; //
- else if(temp=='c') power5=1;//
- }
- }
- }
- void serial_IT(void) interrupt 4
- {
- RI=0;
- temp = SBUF;//串口接收到的数据给temp
- UART_Send_Byte(temp);//单片机接收到数据后发给电脑串口助手
- flag=1;
- }
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