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1黑幣
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit we = P2^7; //數(shù)碼管位選
sbit du = P2^6; //數(shù)碼管段選
/*數(shù)碼管段碼*/
uchar code leddata[]={
0x3F, //"0"
0x06, //"1"
0x5B, //"2"
0x4F, //"3"
0x66, //"4"
0x6D, //"5"
0x7D, //"6"
0x07, //"7"
0x7F, //"8"
0x6F, //"9"
0x77, //"A"
0x7C, //"B"
0x39, //"C"
0x5E, //"D"
0x79, //"E"
0x71, //"F"
0x76, //"H"
0x38, //"L"
0x37, //"n"
0x3E, //"u"
0x73, //"P"
0x5C, //"o"
0x40, //"-"
0x00, //熄滅
0x00 //自定義
};
/*1毫秒延時函數(shù)*/
void delay(uint z)
{
uint x,y;
for(x = z; x > 0; x--)
for(y = 114; y > 0 ; y--);
}
/*
串口初始化函數(shù)
工作模式1 10位異步收發(fā) 發(fā)送速率4800bps
*/
void UART_init()
{
TMOD = 0x20; //T1工作模式2 8位自動重裝
TH1 = 0xfa;
TL1 = 0xfa; //比特率4800
TR1 = 1; //啟動T1定時器
SM0 = 0;
SM1 = 1; //串口工作方式1 10位異步
REN = 1; //串口允許接收
}
/*3位數(shù)碼管顯示函數(shù)*/
void display(uchar num)
{
uchar bai,shi,ge;
bai = num / 100; //求模
shi = num % 100 / 10; //求余100后求出有多少個10
ge = num % 10; //求余
P0 = 0xff; //清除斷碼
we = 1;
P0 = 0xfe; //點(diǎn)亮第一位數(shù)碼管
we = 0;
du = 1;
P0 = leddata[bai]; //顯示百位
du = 0;
delay(1);
P0 = 0xff; //清除斷碼
we = 1;
P0 = 0xfd;//點(diǎn)亮第二位數(shù)碼管
we = 0;
du = 1;
P0 = leddata[shi]; //顯示十位
du = 0;
delay(1);
P0 = 0xff; //清除斷碼
we = 1;
P0 = 0xfb;//點(diǎn)亮第三位數(shù)碼管
we = 0;
du = 1;
P0 = leddata[ge]; //顯示各位
du = 0;
delay(1);
}
void main()
{
UART_init();//串口配置初始化
while(1)
{
if (RI) //檢測是否接收完成
{
RI = 0; //清除接收標(biāo)志位，以便于下次接收
}
display(SBUF); //取出接收SBUF的值賦給數(shù)碼管顯示
}
}
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