51單片機(jī)串口發(fā)送0-9數(shù)碼管顯示程序Proteus仿真圖

ID:585940 · 發(fā)表于 2022-1-28 19:07

串口發(fā)送數(shù)字，數(shù)碼管顯示對(duì)應(yīng)數(shù)字，只是個(gè)位數(shù)字

單片機(jī)源程序如下:

#include "reg52.h" //包含頭文件
#define uchar unsigned char
#define uint unsigned int
#define DM P0
#define WM P2
uchar code SMG_DM[]={0xC0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
uchar code SMG_WM[]={1,2,4,8};
uchar dis[4];
uchar dat = 0;
//-------------------------------------------------------------------------------------
void delay(uint t)
{
while(t--);
}
//-------------------------------------------------------------------------------------
void Uart_Int_Init()
{
SCON=0x40;
TMOD=0x20;
TH1=TL1=0xFD;
TR1=1;
EA=1; //開總中斷
ES=1; //開串口中斷
REN=1; //打開接收
}
//=====================================================================================
void main() //主函數(shù)
{
Uart_Int_Init();
delay(1000);
WM = SMG_WM[0];
while(1)
{
DM=SMG_DM[dat];
}
}
//=====================================================================
void uart_isr(void) interrupt 4
{
RI=0; //數(shù)據(jù)接收完成標(biāo)志位
dat=SBUF;
dat-='0';
if(dat>41)
dat=dat-41+2;
}

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