#include "iocc2430.h"

#include "string.h"

#define LED3  P0_1

#define LED4  P1_4

#define LED5  P1_1

#define LED6  P1_0

void UartTX_Send_String(char *p);

void time2string(unsigned int value,char *result);

int counter;

int counter2;

char resultstr[6];

void Timer(void)

{

  counter=10;

  counter2=0;

  

  UartTX_Send_String("\r\n进入秒表，按任意键开始计时\r\n"); 

  P0DIR =  P0DIR | 0x02;// 0000 0010设置p0_1引脚为输出

  P1DIR =  P1DIR | 0x13;// 0001 0011设置p1_0、p1_1、p1_4、引脚为输出

  

  LED3=0;  

  LED4=0;

  LED5=0;

  LED6=0;//初始熄灭指示灯LED6

  

  T1CTL = 0x0a; //0000 1010单片机时钟频率16MHz,32分频后是500 000Hz;自动重装模式(0->T1CC0中的计数值);

  T1CC0L = 0x50;//计数次数50000 = 0xc350

  T1CC0H = 0xc3;//计数次数50000 = 0xc350

  //定时器中断频率是200 000/ 50 000 = 10Hz

  while(URX0IF == 0);

  URX0IF = 0; //清标识

  T1IE = 1;   //T1中断使能

  EA   = 1;   //系统中断使能

  UartTX_Send_String("\r\n计时中……\r\n"); 

  

  while(URX0IF == 0);

  

  URX0IF = 0; //清标识

  EA   = 0;   //关闭系统中断

  T1IE = 0;   //关闭T1中断

  

  time2string(counter2, resultstr);

  UartTX_Send_String("\r\n本次计数值:");

  UartTX_Send_String(resultstr); 

  UartTX_Send_String(" 秒\r\n"); 

  UartTX_Send_String("\r\n退出秒表\r\n"); 

  LED3=0;

  LED4=0;

  LED5=0;

  LED6=0;

}

/*定时器每过0.1秒溢出一次*/

#pragma vector=T1_VECTOR

__interrupt void T1_ISR(void)

{

  

  counter--;

  if(counter%10==0)

  { 

    counter2++;

           

    if(counter2%1==0)

    { 

      LED3=!LED3; //LED3亮灭切换

    }

    if(counter2%2==0)

    { 

      LED4=!LED4; //LED4亮灭切换

    }

    if(counter2%4==0)

    { 

      LED5=!LED5; //LED5亮灭切换

    }

    if(counter2%8==0)

    { 

      LED6=!LED6; //LED6亮灭切换

    }

  }

}

void time2string(unsigned int value,char *result)

{

  unsigned int i,j;

  char temp[6];

  i=0;

  while(value!=0)

  {

    temp[i]='0'+(value%10); 

    value  = value/10;

    i++;

  }

  j=0;

  while(i!=0)

  {

   result[j++]=temp[--i]; 

  }

  result[j]='\0';

}