keyboard_deal_int1.c

Keyboard_deal_INT1是通过外部中断来处理键盘按键的

void Key_Int(void) interrupt 2 using 1

{
	unsigned char data i,SendCmd[4]={0x1B,0x2A,0x00,0x1B};
	unsigned char data Key_Val;
	unsigned int delaytime;

	for (delaytime = 0; delaytime < 0x3ff; delaytime++);//键盘去抖动

	Key = 1;

	if (!Key)
	{
		Key_Val = KeyComd[P4 & 0x0f];
		switch (Key_Val)
		{
			case 1:
				SendCmd[0] = 0xff;//发送键盘命令值
				SendCmd[1] = 0x00;
				break;
			case 2:
				SendCmd[0] = 0xfe;
				SendCmd[1] = 0x01;
				break;
			case 3:
				SendCmd[0] = 0xfd;
				SendCmd[1] = 0x02;
				break;
			case 4:
				SendCmd[0] = 0xfb;
				SendCmd[1] = 0x04;
				break;
			case 5:
				SendCmd[0] = 0xfa;
				SendCmd[1] = 0x05;
				break;
			case 6:
				SendCmd[0] = 0xf9;
				SendCmd[1] = 0x06;
				break;
			case 7:
				SendCmd[0] = 0xf7;
				SendCmd[1] = 0x08;
				break;
			case 8:
				SendCmd[0] = 0xf6;
				SendCmd[1] = 0x09;
				break;
			case 9:
				SendCmd[0] = 0xf5;
				SendCmd[1] = 0x0a;
				break;
			case 10:
				SendCmd[0] = 0xf3;
				SendCmd[1] = 0x0c;
				break;
			case 11:
				SendCmd[0] = 0xf2;
				SendCmd[1] = 0x0d;
				break;
			case 12:
				SendCmd[0] = 0xf1;
				SendCmd[1] = 0x0E;
				break;
			case 13:
				SendCmd[0] = 0xef;
				SendCmd[1] = 0x10;
			case 14:
				SendCmd[0] = 0xee;
				SendCmd[1] = 0x11;
				break;
			case 15:
				SendCmd[0] = 0xed;
				SendCmd[1] = 0x12;
				break;
			default:break;
		}
		SendCmd[2] = 0xff;
		SendCmd[3] = 0x00;

		for (i = 0; i < 4; i++)//串口发送
		{
			ACC = SendCmd[i];
			TB8 = P;
			SBUF = SendCmd[i];
			err = 0;
			while (!TI)
			{
				err++;
				if (err > 5000)
				{
					break;
				}
			}
			TI = 0;
		}
	}
}