#include "main.h"

#define RELOAD (65535-9216)		//定时器填充值(1ms)
unsigned char TH, TL;

extern Menu *NOW;							//菜单指针
extern enum OPR opr;						//按键状态

unsigned char freshScreenTriger = 0;

void int0() interrupt 0 			//外部中断：检测左右旋钮
{
//  IE0 = 0;  				//消抖
//  delay(20);
//  IE0 = 0;
//
//  if(PIN_3 == 0)
//    {
//      delay(10);
//      if(PIN_3 == 0)
//        opr = left;
//    }
//  else if(PIN_3 == 1)
//    {
//      delay(10);
//      if(PIN_3 == 1)
//        opr = right;
//    }
  unsigned char LS, CS, flag = 0;
  LS = PIN_3;
  while(!PIN_1)
    {
      CS = PIN_3;
      flag = 1;
    }
  if(flag == 1)
    {
      if((LS == 0) && (CS == 1))
        opr = right;
      if((LS == 1) && (CS == 0))
        opr = left;
    }

}

void time() interrupt 1				//定时中断：检测确认按键
{
  EA = 0;
  TH0 = TH;
  TL0 = TL0 + TL;
  TL0 = TL0 + 23;

  if(PIN_4 == 0)
    {
      delay(50);
      if(PIN_4 == 0)
        opr = confirm;
    }
  EA = 1;
}

int main()
{
  TH = RELOAD / 256;	//填充值预计算
  TL = RELOAD - (RELOAD / 256) * 256;
  TH0 = TH;
  TL0 = TL;

  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

  TR0 = 1; 						//启动定时器0
  EA = 1; 						//打开中断总开关
  ET0 = 1; 						//打开定时器0中断开关


  IT0 = 1;  						//中断触发方式为下边沿触发
  EX0 = 1;  						//打开外部中断0

  EA = 1;    						//打开中断总开关

  displayInit(); 			//屏幕初始化
  clear();
  menuInit();					//菜单及其他初始化

  while(1)
    {

      NOW->f(NOW);

    }
}