//检测按键
void KeyDown(void)
{
unsigned int a=0;
GPIO_KEY=0x0f;
if(GPIO_KEY!=0x0f)
{
Delay50us();
a++;
a=0;
if(GPIO_KEY!=0x0f)
{
ET0=0;//关定时器中断
KeyState=1;//有按键按下
//测试列
GPIO_KEY=0X0F;
// Delay50us();
switch(GPIO_KEY)
{
case(0X07): KeyValue=0;break;
case(0X0b): KeyValue=1;break;
case(0X0d): KeyValue=2;break;
case(0X0e): KeyValue=3;break;
// default: KeyValue=17; //检测出错回复17意思是把数码管全灭掉。
}
//测试行
GPIO_KEY=0XF0;
Delay50us();
switch(GPIO_KEY)
{
case(0X70): KeyValue=KeyValue;break;
case(0Xb0): KeyValue=KeyValue+4;break;
case(0Xd0): KeyValue=KeyValue+8;break;
case(0Xe0): KeyValue=KeyValue+12;break;
// default: KeyValue=17;
}
ET0=1;//开定时器中断
while((a<5000)&&(GPIO_KEY!=0xf0)) //检测按键松手检测
{
Delay50us();
a++;
}
a=0;
}
}
}
unsigned char TPGetByte(void) {
unsigned char i, b1Bit;
unsigned char value = 0;
unsigned char p = 0;
TOUCH_PAD_DATA_TRIS = 1;
TPSetClk(1);
TPWaitClock(0);
TPWaitClock(1);
for (i = 0; i < 8; i++) {
TPWaitClock(0);
b1Bit = TOUCH_PAD_DATA_PORT;
value = value + (b1Bit << i);
p = p + b1Bit;
TPWaitClock(1);
}
TPWaitClock(0);
p = p + TOUCH_PAD_DATA_PORT;
if ((p & 0x01) == 0) {
#ifdef TP_DEBUG_LEVEL_0
Debug("P");
#endif
STP.TPModule.ErrorState.b1RcvPErr = 1;
}
TPWaitClock(1);
TPWaitClock(0);
if (TOUCH_PAD_DATA_PORT == 0) {
#ifdef TP_DEBUG_LEVEL_0
Debug("S");
#endif
STP.TPModule.ErrorState.b1RcvSErr = 1;
}
TPWaitClock(0);
#ifdef TP_DEBUG_LEVEL_1
DebugStrHex1R("TP:>", value);
#endif
Delay50us(); // tak jest w dokumencie i chyba ma to znaczenie
return value;
}
