noInterrupts()和interrupts()这两个函数的用法，谢谢

拾荒皇子

setup中这么写的
｛
pinMode(2,INPUT);
  pinMode(13,OUTPUT);
  attachInterrupt(0,counter,RISING);
｝
程序首先要执行一段初始化代码，这个时候要忽略中断，请问，该怎么用啊？谢谢，我是这么写的，但是没用
void loop()
{
noInterrupts();

while(ret_step!=1)  rst();

}
就是执行while语句的时候，要忽略中断，该怎么写？谢谢

smching

请参考http://forum.arduino.cc/index.php/topic,43062.0.html

1. int servo1 = 2;
   
2. unsigned long servo1_startPulse;
   
3. volatile unsigned servo1_val;
   
4. int servo1_Ready;
   
5. 
   
6. void setup() {
   
7. 
   
8. pinMode(servo1, INPUT);
   
9. attachInterrupt(0, rc1_begin, RISING);    // catch interrupt 0 (digital pin 2) going HIGH and send to rc1()
   
10. 
    
11. }
    
12. 
    
13. 
    
14. void rc1_begin() {           // enter rc1_begin when interrupt pin goes HIGH.
    
15. 
    
16.   servo1_startPulse = micros();     // record microseconds() value as servo1_startPulse
    
17.   
    
18.   detachInterrupt(0);  // after recording the value, detach the interrupt from rc1_begin
    
19.   
    
20.   attachInterrupt(0, rc1_end, FALLING); // re-attach the interrupt as rc1_end, so we can record the value when it goes low
    
21.   
    
22. }
    
23. 
    
24. void rc1_end() {
    
25. 
    
26. servo1_val = micros() - servo1_startPulse;  // when interrupt pin goes LOW, record the total pulse length by subtracting previous start value from current micros() vlaue.
    
27.   
    
28. detachInterrupt(0);  // detach and get ready to go HIGH again
    
29.   
    
30. attachInterrupt(0, rc1_begin, RISING);
    
31. 
    
32. if (servo1_val < 150 || servo1_val > 600) {  // only set the servo1_Ready flag if the value is a valid Servo pulse between 600-2400 microseconds.
    
33.   servo1_Ready = false;
    
34. }
    
35. else {
    
36.   servo1_Ready = true; // if not, don't pass the value to be processed
    
37. }
    
38. }
    
39. 
    
40. void loop() {
    
41. 
    
42.     Serial.print("ch1:  ");
    
43.     Serial.print(servo1_val);
    
44.     Serial.print("  ");
    
45. 
    
46. }

复制代码

拾荒皇子

smching 发表于 2013-6-24 22:11
请参考http://forum.arduino.cc/index.php/topic,43062.0.html

int servo1 = 2;

谢谢，弄好了