TM1638驱动数码管的arduino和51单片机源程序与电路图 -

#include <REGX51.H>
#include <tm1638.h>
unsigned char num[8]; //各个数码管显示的值
int main(void)
{
unsigned char i;
init_TM1638(); //初始化TM1638
for(i=0;i<8;i++)
Write_DATA(i<<1,tab[0]); //初始化寄存器
while(1)
{
i=Read_key(); //读按键值
if(i<8)
{
num[i]++;
while(Read_key()==i); //等待按键释放
if(num[i]>15)
num[i]=0;
Write_DATA(i*2,tab[num[i]]);
Write_allLED(1<<i);
}
}
}

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#define DATA_COMMAND 0X40
#define DISP_COMMAND 0x80
#define ADDR_COMMAND 0XC0
//TM1638模块引脚定义
int DIO = 2;
int CLK = 1;
int STB = 0; //这里定义了那三个脚
//共阴数码管显示代码
unsigned char tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,
0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};
unsigned char num[8]; //各个数码管显示的值
void setup ()
{
pinMode(STB,OUTPUT);
pinMode(CLK,OUTPUT);
pinMode(DIO,OUTPUT); //让三个脚都是输出状态
}
void loop()
{
unsigned char i;
init_TM1638(); //初始化TM1638
for(i=0;i<8;i++)
Write_DATA(i<<1,tab[0]); //初始化寄存器
while(1)
{
i=Read_key(); //读按键值
if(i<8)
{
num[i]++;
while(i==Read_key()); //等待按键释放
if(num[i]>15)
num[i]=0;
Write_DATA(i*2,tab[num[i]]);
Write_allLED(1<<i);
}
}
}
void TM1638_Write(unsigned char DATA) //写数据函数
{
unsigned char i;
pinMode(DIO,OUTPUT);
for(i=0;i<8;i++)
{
digitalWrite(CLK,LOW);
if(DATA&0X01)
digitalWrite(DIO,HIGH);
else
digitalWrite(DIO,LOW);
DATA>>=1;
digitalWrite(CLK,HIGH);
}
}
unsigned char TM1638_Read(void) //读数据函数
{
unsigned char i;
unsigned char temp=0;;
pinMode(DIO,INPUT);//设置为输入
for(i=0;i<8;i++)
{
temp>>=1;
digitalWrite(CLK,LOW);
if(digitalRead(DIO)==HIGH)
temp|=0x80;
digitalWrite(CLK,HIGH);
}
return temp;
}
void Write_COM(unsigned char cmd) //发送命令字
{
digitalWrite(STB,LOW);
TM1638_Write(cmd);
digitalWrite(STB,HIGH);
}
unsigned char Read_key(void)
{
unsigned char c[4],i,key_value=0;
digitalWrite(STB,LOW);
TM1638_Write(0x42); //读键扫数据命令
for(i=0;i<4;i++)
{
c[i]=TM1638_Read();
}
digitalWrite(STB,HIGH); //4个字节数据合成一个字节
for(i=0;i<4;i++)
{
key_value|=c[i]<<i;
}
for(i=0;i<8;i++)
{
if((0x01<<i)==key_value)
break;
}
return i;
}
void Write_DATA(unsigned char add,unsigned char DATA) //指定地址写入数据
{
Write_COM(0x44);
digitalWrite(STB,LOW);
TM1638_Write(0xc0|add);
TM1638_Write(DATA);
digitalWrite(STB,HIGH);
}
void Write_allLED(unsigned char LED_flag) //控制全部LED函数，LED_flag表示各个LED状态
{
unsigned char i;
for(i=0;i<8;i++)
{
if(LED_flag&(1<<i))
Write_DATA(2*i+1,1);
else
Write_DATA(2*i+1,0);
}
}
//TM1638初始化函数
void init_TM1638(void)
{
unsigned char i;
Write_COM(0x8b); //亮度 (0x88-0x8f)8级亮度可调
Write_COM(0x40); //采用地址自动加1
digitalWrite(STB,LOW); //
TM1638_Write(0xc0); //设置起始地址
for(i=0;i<16;i++) //传送16个字节的数据
TM1638_Write(0x00);
digitalWrite(STB,HIGH);
}

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