upsd3234A實現(xiàn)led燈25HZ程序

ID:311210 · 發(fā)表于 2018-4-18 21:15

本帖最后由 378498084 于 2018-4-18 21:16 編輯

#include "upsd_hardware.h"             // 開發(fā)板硬件定義
#include "upsd3200.h"                      // UPSD單片機(jī)特殊寄存器聲明頭文件
#include <stdio.h>
sbit L1=P4^5;
static unsigned int idata timer0_tick;
unsigned int timer0_count(void);
#define TIMER0_VALUE-(((FREQ_OSC * 10L) / 12L) - 17L)#define Watchdog_Off()  WDKEY=0x55
void UartInit();                   //串口初始化程序

void UartInit()
{
      T2MOD = 0;                   //timer2
      T2CON = 0x30;

      RCAP2L = 0x8B;          //計數(shù)器重裝值
      RCAP2H = 0xFF;

      TL2 = 0x8B;                      //baud rate = 9600
      TH2 = 0xFF;
      SCON |= 0x52;             //mode 1, REN = 1,TI=1
      PCON = 0x00;
      TI = 1;
      TR2 = 1;                      //enable timer2
}

void timer0_init(void)       //       chushihua
  {
            EA = 0;
               timer0_tick = 0;
               TR0 = 0;
               TMOD &= 0xF0;
               TMOD |= 0x01;
               TL0 = (TIMER0_VALUE & 0x00FF);

               TH0 = (TIMER0_VALUE >> 8);
               PT0 = 1;
               ET0 = 1;
               TR0 = 1;
               EA = 1;
}

static void timer0_isr(void) interrupt TF0_VECTOR using 1
{
               TR0 = OFF;
               TL0= (TIMER0_VALUE & 0x00FF);
               TH0 = (TIMER0_VALUE >> 8);
               TR0 = ON;
               timer0_tick++;
}

unsigned int timer0_count(void)       //
{
               unsigned int t;
               EA = 0;
               t = timer0_tick;
               EA = 1;
               return(t);
}
void main(void){
   Watchdog_Off();
   UartInit();
   timer0_init();
while(1)
{
   if(timer0_tick==2)
   {
      L1=!L1;
   timer0_tick=0;

   }
   }
}

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