MSP430實現定時器的源程序

ID:436127 · 發表于 2018-11-30 22:00

該程序使用到了TM1638，附件中有。
（上一篇文章中的程序包含了此程序的公共代碼部分，但是我忘了把 tm1638.h 放到附件里面了，這次補上）
定時器初值設為00:02:15，結束后重置為23:59:59

源の代碼：

#include "TM1638.h"
#include "msp430f6638.h"
#include "stdint.h"

uint8_t num[8]; //各個數碼管顯示的值
uint8_t led_flag[8];
const uint8_t tab[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x00};

void init_port(void)
{
P3DIR |= BIT5;
P3DIR |= BIT4 + BIT2;

P1DIR |= BIT0; // ACLK set out to pins
P1SEL |= BIT0;

}

const uint8_t tab2[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};

void TM1638_Write(unsigned char DATA) //寫數據函數
{
unsigned char i;
DIO_OUT;
for(i=0;i<8;i++)
{
   CLK_low;
   if(DATA & 0x01)
      DIO_high;
   else
      DIO_low;
   CLK_high;
   DATA>>=1;
}
}

unsigned char TM1638_Read(void)    //讀數據函數
{
unsigned char i;
unsigned char temp=0;
DIO_IN;
STB_low;
for(i=0;i<8;i++)
{
      temp>>=1;
      CLK_low;
      _delay_us(100);
      if(DIO_READ)
            temp |= 0x80;
      else
            temp &= 0x7f;
      CLK_high;
}
return temp;
}

void Write_COM(unsigned char cmd)  //發送命令字
{
CLK_high;
STB_high;
STB_low;
TM1638_Write(cmd);
STB_high;
}

void Write_DATA(unsigned char add,unsigned char DATA)  //指定地址寫入數據
{
Write_COM(0x44);
STB_low;
TM1638_Write(0xc0|add);
TM1638_Write(DATA);
STB_high;
}

void init_TM1638(void)
{
unsigned char count = 0;
unsigned char times = 1;
while(times--){
      Write_allLED(tab2[count]);
      count++;
      if(count == 16)
         count = 0;
      _delay_ms(100);
}
Write_allLED(0xff);
_delay_ms(100);
Write_allLED(0);
}

void delay(){
for (int i=0; i<10; i++)
   for (int j=0; j<1000; j++);
}

void  Write_allLED(unsigned char DATA){
unsigned char i;
Write_COM(0x8F);//顯示控制
Write_COM(0x40); //數據命令
STB_low;
TM1638_Write(0xc0);
for(i=0;i<16;i++)
TM1638_Write(DATA);
STB_high;
}

int main(void)
{

WDTCTL = WDTPW+WDTHOLD;
init_port();
init_TM1638();

int hourA = 0;
int hourB = 0;
int minuteA = 0;
int minuteB = 2;
int secondA = 1;
int secondB = 5;

while(1) {
      secondB--;
      if(secondB == -1) {
         secondB = 9;
         secondA--;
         if(secondA == -1) {
            secondA = 5;
            minuteB--;
            if(minuteB == -1) {
                  minuteB = 9;
                  minuteA--;
                  if(minuteA == -1) {
                     minuteA = 5;
                     hourB--;
                     if(hourB == -1) {
                        hourB = 9;
                        hourA--;
                        if(hourA == -1) {
                              hourA = 2;
                              hourB = 3;
                        }
                     }
                  }
            }
         }
      }

      Write_DATA(4*2,tab[hourA]);
      Write_DATA(5*2,tab[hourB]);
      Write_DATA(6*2,tab[15]);
      Write_DATA(7*2,tab[minuteA]);
      Write_DATA(0*2,tab[minuteB]);
      Write_DATA(1*2,tab[15]);
      Write_DATA(2*2,tab[secondA]);
      Write_DATA(3*2,tab[secondB]);

      delay();

}

}

ID:436127 · 發表于 2018-11-30 22:17

補充說明一下，主函數中的delay是我自己寫的，是為了便于調試，并沒有真正起到延時1s的作用

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MSP430實現定時器的源程序

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