Robofun 機器人論壇

標題: 新手請教多棵LED同時閃爍後計時中斷~~誰能幫我看看>< [打印本頁]

作者: j246810j 時間: 2015-9-9 14:53
標題: 新手請教多棵LED同時閃爍後計時中斷~~誰能幫我看看><
這是我最近寫的程式，但是無法中斷，update後怎麼計時中斷,換下個燈號，另外我有用到74hc595 所以是用shift()
unsigned long previous_time;
int latchPin = 26;
int clockPin = 24;
int dataPin = 22;
#define ULONG_MAX 0xffffffffL
#define latchPin2 A1
#define clockPin2 A0
#define dataPin2 A2

volatile unsigned long Count = 0;

void setup() {
// 將 latchPin, clockPin, dataPin 設置為輸出
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);

  pinMode(latchPin2, OUTPUT);
  pinMode(clockPin2, OUTPUT);
  pinMode(dataPin2, OUTPUT);

previous_time = millis();

Serial.begin(9600);

  TCCR1A = 0x00;             // Normal mode, just as a Timer
  TCCR1B |= _BV(CS12);       // prescaler = CPU clock/1024
  TCCR1B &= ~_BV(CS11);
  TCCR1B |= _BV(CS10);

  TIMSK1 |= _BV(TOIE1);       // enable timer overflow interrupt
  TCNT1 = -15625;             // Ticks for 1 second @16 MHz,prescale=1024
}

void update2(unsigned long time_passed){
  static unsigned long time = 0;
  time += time_passed;
  if((time / 200) % 2 == 0){ // 第一組的LED明滅頻率為0.2秒
   digitalWrite(latchPin, LOW);
   shiftOut(dataPin, clockPin, MSBFIRST, 1);
      digitalWrite(latchPin,  HIGH);
  }
  else{
   digitalWrite(latchPin,  LOW);
shiftOut(dataPin, clockPin, MSBFIRST, 0);
   digitalWrite(latchPin,  HIGH);
  }
}

void update3(unsigned long time_passed){
  static unsigned long time = 0;
  time += time_passed;
  if((time / 300) % 2 == 0){ // 第二組LED明滅頻率為0.3秒
   digitalWrite(latchPin2, LOW);
shiftOut(dataPin2, clockPin2, MSBFIRST, 1);
   digitalWrite(latchPin2,  HIGH);
  }
  else{
   digitalWrite(latchPin2, LOW);
shiftOut(dataPin2, clockPin2, MSBFIRST, 0);
   digitalWrite(latchPin2,  HIGH);
  }
}

void loop() {
unsigned long current_time = millis();
  unsigned long time_passed;

  if(current_time > previous_time ){
time_passed = current_time - previous_time;
  }
  else{
time_passed = ULONG_MAX - previous_time + current_time;
  }

  if(time_passed >= 100){
update2(time_passed);
update3(time_passed);
previous_time = current_time;
  }

}
ISR (TIMER1_COMP_vect)
{
  Count++;
  if (Count == 5) {  //5秒後中斷
   digitalWrite(latchPin2, LOW);
shiftOut(dataPin2, clockPin2, MSBFIRST, 0);
   digitalWrite(latchPin2,  HIGH);

  }

  TCNT1 = -15625;             // Ticks for 1 second @16 MHz,prescale=1024
}

作者: 超新手 時間: 2015-9-10 08:37
你致能的是 OVERFLOW 的中斷
TIMSK1 |= _BV(TOIE1);
但用的郤是 COMPARE 中斷
ISR (TIMER1_COMP_vect)

所以只要把 ISR (TIMER1_COMP_vect)
改為 ISR (TIMER1_OVF_vect)
就可以了

作者: j246810j 時間: 2015-9-11 15:59
回復 2# 超新手

還是無法停止，我有個想法是會不會是用到mills() 導致不能使用count來處理或者isr內程式太複雜，到底要如何閃爍一段時間來中斷做另一件事?求救

作者: 超新手 時間: 2015-9-11 17:16
如果只是要做另一件事
不用那麼麻煩
把中斷都拿掉(含SETUP 中的致能)
然後LOOP改成

if(time_passed >= 100) {
if(Count >= 50) {
   digitalWrite(latchPin2, LOW);
   shiftOut(dataPin2, clockPin2, MSBFIRST, 0);
   digitalWrite(latchPin2,  HIGH);
}
else {
   ++Count;
   update2(time_passed);
   update3(time_passed);
}
previous_time = current_time;
  }

歡迎光臨 Robofun 機器人論壇 (https://robofun.net/forum/)