?? b05.c
字號:
// ; “驗證式” 實驗八 力測量實驗
#define LEDLen 6
#define MODE 0x03
xdata unsigned char CS0809 _at_ 0xA000;
xdata unsigned char CAddr _at_ 0xe100; // 命令控制口
xdata unsigned char OUTBIT _at_ 0xe101; // 位控制口
xdata unsigned char CLK164 _at_ 0xe102; // 段控制口(接164時鐘位)
xdata unsigned char DAT164 _at_ 0xe102; // 段控制口(接164數據位)
xdata unsigned char IN _at_ 0xe103; // 鍵盤讀入口
unsigned char LEDBuf[LEDLen]; // 顯示緩沖
code unsigned char LEDMAP[] = { // 八段管顯示碼
0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07,
0x7f, 0x6f, 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71
};
void Delay(unsigned char CNT)
{
unsigned char i;
while (CNT-- !=0)
for (i=100; i !=0; i--);
}
void DisplayLED()
{
unsigned char i, j;
unsigned char Pos;
unsigned char LED;
Pos = 0x20; // 從左邊開始顯示
for (i = 0; i < LEDLen; i++) {
OUTBIT = 0; // 關所有八段管
LED = LEDBuf[i];
for (j = 0; j < 8; j++) { // 送164
if (LED & 0x80) DAT164 = 1 ; else DAT164 = 0 ;
CLK164 = CLK164| 0X02;
CLK164 = CLK164& 0Xfd;
LED <<= 1;
}
OUTBIT = Pos; // 顯示一位八段管
Delay(1);
Pos >>= 1; // 顯示下一位
}
OUTBIT = 0; // 關所有八段管
}
unsigned char Read0809()
{
unsigned char i;
CS0809 = 0; // 起動 A/D
for (i=0; i<0x20; i++) ; // 延時 > 100us
return(CS0809); // 讀入結果
}
void main()
{
unsigned char j;
unsigned char b;
CAddr= MODE;
while(1) {
LEDBuf[0] = 0Xb8;
LEDBuf[1] = 0X40;
LEDBuf[2] = 0X40;
LEDBuf[3] = 0X40;
LEDBuf[4] = 0X00;
LEDBuf[5] = 0X00;
//b = Read0809();
LEDBuf[5] = LEDMAP[Read0809() & 0x0f] ;
LEDBuf[4] = LEDMAP[Read0809()>>4 & 0x0f] ;
for(j=0; j<5; j++)
DisplayLED(); // 延時
}
}
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