* 实验说明 : 8位数码管显示0~F
#include
#define GPIO_DIG P0 //段选
#define GPIO_PLACE P1 //位选
//--定义全局变量--//
unsigned char code DIG_PLACE[8] = {
0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//位选控制 查表的方法控制 unsigned char code DIG_CODE[17] = {
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71 };
//0、1、2、3、4、5、6、7、8、9、A、b、C、d、E、F的显示码 unsigned char DisplayData[8];
//用来存放要显示的8位数的值
void DigDisplay(); //动态显示函数
void main(void)
{
unsigned char i;
for(i=0; i<8; i++)
{
DisplayData[i] = DIG_CODE[i];
}
while(1)
{
DigDisplay();
}
}
void DigDisplay()
{
unsigned char i;
unsigned int j;
for(i=0; i<8; i++)
{
GPIO_PLACE = DIG_PLACE[i]; //发送位选
GPIO_DIG = DisplayData[i]; //发送段码
j = 10; //扫描间隔时间设定
while(j--);
GPIO_DIG = 0x00;//消隐
}
}