【发布时间】:2019-12-10 16:05:36
【问题描述】:
我的代码有问题...我正在使用带有 arduino 的交流调光器模块,我想让灯发光 5 秒,然后闪烁两次,然后重复
int AC_LOAD = 3; // Output to Opto Triac pin
int dimming = 128; // Dimming level (0-128) 0 = ON, 128 = OFF
void setup()
{
pinMode(AC_LOAD, OUTPUT);// Set AC Load pin as output
attachInterrupt(0, zero_crosss_int, RISING); // Choose the zero cross interrupt # from the table above
}
//the interrupt function must take no parameters and return nothing
void zero_crosss_int() //function to be fired at the zero crossing to dim the light
{
// Firing angle calculation : 1 full 50Hz wave =1/50=20ms
// Every zerocrossing thus: (50Hz)-> 10ms (1/2 Cycle)
// For 60Hz => 8.33ms (10.000/120)
// 10ms=10000us
// (10000us - 10us) / 128 = 75 (Approx) For 60Hz =>65
int dimtime = (75*dimming); // For 60Hz =>65
delayMicroseconds(dimtime); // Wait till firing the TRIAC
digitalWrite(AC_LOAD, HIGH); // Fire the TRIAC
delayMicroseconds(10); // triac On propogation delay
// (for 60Hz use 8.33) Some Triacs need a longer period
digitalWrite(AC_LOAD, LOW); // No longer trigger the TRIAC (the next zero crossing will swith it off) TRIAC
}
void loop()
{
{
int e = 5;
dimming = e;
delay(200);
}
{
for (int i=128; i >= 5; i--){
dimming=i;
delay(2);
}
for (int j=5; j <= 128; j++){
dimming=j;
delay(2); // this value is the light delay timing
}
//delay(3); // this value is the gap timing
for (int i=128; i >= 5; i--){
dimming=i;
delay(2);
}
for (int j=5; j <= 128; j++){
dimming=j;
delay(2); // this value is the light delay timing
}
//delay(3); // this value is the gap timing
}}
当我使用此代码时,灯不亮 5 秒然后闪烁。它会延迟 5 秒,然后闪烁
{
int e = 5;
dimming = e;
delay(200);
}
但是如果我只使用这部分代码和它下面的代码。它会发光
我真的是编程新手,请帮帮我
【问题讨论】:
-
delay() 有毫秒而不是秒
-
在 loop() 中,您将大量数字写入
dimming。您的编译器可能会优化掉许多写访问,因为 - 正如编译器所知 - 无法从变量中读取任何位置。尝试将dimming声明为volatile,这样每个 更改肯定都会写入并且可以 被ISR 看到。
标签: arduino microcontroller arduino-c++