75 lines
No EOL
1.2 KiB
C
75 lines
No EOL
1.2 KiB
C
#include "main.h"
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#define RELOAD (65535-9216) //定时器填充值(1ms)
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unsigned char TH, TL;
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extern Menu *NOW; //菜单指针
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extern enum OPR opr; //按键状态
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void int0() interrupt 0 //外部中断：检测左右旋钮
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{
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unsigned char LS, CS, flag = 0;
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LS = PIN_3;
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while(!PIN_1)
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{
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CS = PIN_3;
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flag = 1;
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}
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if(flag == 1)
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{
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if((LS == 0) && (CS == 1))
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opr = right;
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if((LS == 1) && (CS == 0))
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opr = left;
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}
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}
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void time() interrupt 1 //定时中断：检测确认按键
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{
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EA = 0;
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TH0 = TH;
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TL0 = TL0 + TL;
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TL0 = TL0 + 23;
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if(PIN_4 == 0)
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{
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delayms(15);
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if(PIN_4 == 0)
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opr = confirm;
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}
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EA = 1;
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}
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int main()
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{
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TH = RELOAD / 256; //填充值预计算
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TL = RELOAD - (RELOAD / 256) * 256;
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TH0 = TH;
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TL0 = TL;
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TMOD = 0x01; //使用定时器T0，高4位全为0,低4位GATE=0，C/T=0，采用工作方式1，M1=0,M1=1
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TR0 = 1; //启动定时器0
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EA = 1; //打开中断总开关
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ET0 = 1; //打开定时器0中断开关
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IT0 = 1; //中断触发方式为下边沿触发
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EX0 = 1; //打开外部中断0
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EA = 1; //打开中断总开关
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displayInit(); //屏幕初始化
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clear();
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menuInit(); //菜单及其他初始化
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while(1)
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{
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NOW->f(NOW);
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}
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} |