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標(biāo)題: 單片機(jī)與pc串口通信,虛擬端口發(fā)送1接收卻顯示q,發(fā)送2接收顯示r,求大佬幫幫 [打印本頁(yè)]

作者: XIBAYUE 時(shí)間: 2024-12-17 22:57
標(biāo)題: 單片機(jī)與pc串口通信,虛擬端口發(fā)送1接收卻顯示q,發(fā)送2接收顯示r,求大佬幫幫
#include <REGX51.H>
#define uchar unsigned char
#define uint unsigned int

sbit RS = P2^0;
sbit RW = P2^1;
sbit E = P2^2;

sbit KEY = P3^7;

uchar received_data;

void delayms(uint ms)
{
uchar i;
while (ms--)
      for (i = 0; i < 123; i++);
}

void w_com(uchar com)
{

RS = 0;
RW = 0;
E = 1;
P0 = com;
E = 0;
delayms(1);

}

void w_dat(uchar dat)
{

RS = 1;
RW = 0;
E = 1;
P0 = dat;
E = 0;
delayms(1);
}

void lcd_ini(void)
{
delayms(10);
w_com(0x38);
delayms(10);
w_com(0x0c);
delayms(10);
w_com(0x06);
delayms(10);
w_com(0x01);
delayms(10);
w_com(0x80);
delayms(10);
}

void send_data(uchar data_to_send)
{

SBUF = data_to_send;
while (TI == 0);
TI = 0;
}

void uart_init()
{
// 9600bps 11.0592MHz
SCON = 0x50;
TMOD &= 0x0F;
TMOD |= 0x20;
TL1 = 0xFD;
TH1 = 0xFD;
ET1 = 0;
TR1 = 1;
EA = 1;
ES = 1;
}

void main()
{
uchar data_to_send[8] = "12345678";
uchar i;
lcd_ini();
uart_init();
while (1)
{
      if (KEY == 0)
      {
         delayms(20);
         if (KEY == 0)
         {
            for (i = 0; i < 8; i++)
            {
                  send_data(data_to_send[ i]);
            }
            while (KEY == 0);
         }
      }
}
}

void uart_interrupt() interrupt 4
{
if (RI)
{
      RI = 0;
      received_data = SBUF;

      w_dat(received_data);
}
}

51hei.jpg (305.67 KB, 下載次數(shù): 0)

仿真圖

作者: lzw991101 時(shí)間: 2024-12-18 08:27
發(fā)送的字符 +0x30 試試

作者: xzh5508 時(shí)間: 2024-12-18 09:28
兩邊的格式不一樣吧，都設(shè)置成16進(jìn)制看看

作者: tyrl800 時(shí)間: 2024-12-18 15:34
單片機(jī)與虛擬終端是同一個(gè)設(shè)備

作者: lkc8210 時(shí)間: 2024-12-19 11:50
檢查一下單片機(jī)晶振設(shè)置，如果也是11.0592Mhz
那就可能是電腦太慢引致仿真速度不匹配現(xiàn)實(shí)

作者: zhang32568 時(shí)間: 2024-12-28 17:26
ASCII碼 0 的ASCII碼是 0X30 你發(fā)送 1 實(shí)際發(fā)送（1+0x30)試試

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