AIP650芯片单片机程序实用电子小模块-4位数码管驱动模块-IIC接口 -

#include "Config.H"
//数码管0-9显示代码 0 1 2 3 4 5 6 7 8 9
u8 DISPLAY_CODE[10] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
//数码管位数 1 2 3 4
u8 DIG_BIT_CODE[4] = { 0x68,0x6a,0x6c,0x6e };
//8段显示亮度等级 1 2 3 4 5 6 7 8
u8 Light_Level_CODE[8] = { 0x11,0x21,0x31,0x41,0x51,0x61,0x71,0x01 };
void I2CStart(void)//开始信号
{
CLK_H;
DIO_H;
Delay_us(5);
DIO_L;
}
void I2Cask(void) //ACK信号
{
u8 timeout = 1;
CLK_H;
Delay_us(5);
CLK_L;
while((DIO)&&(timeout<=100))
{
timeout++;
}
Delay_us(5);
CLK_L;
}
void I2CStop(void) //停止信号
{
CLK_H;
DIO_L;
Delay_us(5);
DIO_H;
}
void I2CWrByte(u8 oneByte) //写一个字节高位在前，低位在后
{
u8 i;
CLK_L;
Delay_us(1);
for(i=0;i<8;i++)
{
oneByte = oneByte<<1;
DIO = CY;
CLK_L;
Delay_us(5);
CLK_H;
Delay_us(5);
CLK_L;
}
}
void AiP650_Set(u8 add,u8 dat) //数码管显示
{
//写显存必须从高地址开始写
I2CStart();
I2CWrByte(add); //第一个显存地址
I2Cask();
I2CWrByte(dat);
I2Cask();
I2CStop();
}
void AiP650_DisPlay(u8 DIG_Bit, u8 Display_num) //显示一位数字
{
AiP650_Set(DIG_BIT_CODE[DIG_Bit-1],DISPLAY_CODE[Display_num]);
}
void AiP650_CLR() //清屏
{
u8 i;
for(i=0;i<4;i++)
{
AiP650_Set(DIG_BIT_CODE[i],0x00);
}
}
void AiP650_DisPlayFourNum(u16 Display_num) //显示一个四位数（0-9999）
{
u8 One,Two,Three,Four;
One = Display_num/1000;
Two = Display_num%1000/100;
Three = Display_num%100/10;
Four = Display_num%10;
if(One == 0)
{
AiP650_Set(DIG_BIT_CODE[0],0x00);
if(Two == 0)
{
AiP650_Set(DIG_BIT_CODE[1],0x00);
if(Three == 0)
{
AiP650_Set(DIG_BIT_CODE[2],0x00);
}
else
{
AiP650_DisPlay(3,Three);
}
AiP650_DisPlay(4,Four);
}
else
{
AiP650_DisPlay(2,Two);
AiP650_DisPlay(3,Three);
AiP650_DisPlay(4,Four);
}
}
else
{
AiP650_DisPlay(1,One);
AiP650_DisPlay(2,Two);
AiP650_DisPlay(3,Three);
AiP650_DisPlay(4,Four);
}
}
void Light_Level_Set(u8 Level) //设置亮度等级 1-8级
{
AiP650_Set(0x48,Light_Level_CODE[Level-1]);
}
u8 Scan_Key(void) // 按键扫描
{
u8 i;
u8 rekey;
I2CStart();
I2CWrByte(0x49);//读按键命令
I2Cask();
for(i=0;i<8;i++)
{
CLK_H;
rekey = rekey<<1;
if(DIO)
{
rekey++;
}
Delay_us(10);
CLK_L;
}
I2Cask();
I2CStop();
return(rekey);
}

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