[经验]

【Intel Edison试用体验】8.Edison 定时器中断与外部中断的使用

盼盼2333

2016-7-20 09:29:33

2666 定时器

经常大家的程序会有需要用到定时器和中断触发的地方，Edison也支持。
功能和之前的例子相同：
1.定时器中断完成舵机的控制。
2.外部中断使按键处于被按下状态时，LED亮。

代码如下：

#include
#include
#include "rgb_lcd.h"
#include <timerOne.h>
rgb_lcd lcd;
Servo myservo;
const int colorR = 255;
const int colorG = 255;
const int colorB = 255;
const int thresholdvalue = 10 ; //led trun on value
const int timerInterval = 15*1000; //15ms
const int APinTemp = 0;
const int APinBright = 1;
const int APinPot = 2;
const int DPinLed = 2;
const int DPinServo = 3;
const int DPinKey = 4;
const int DPinBuzzer = 5;
void setup()
{
lcd.begin(16, 2);
lcd.setRGB(colorR, colorG, colorB);
lcd.setCursor(0, 0);
lcd.print("temp:");
lcd.setCursor(6, 1);
lcd.print("panpan2333");
pinMode(DPinLed , OUTPUT);
pinMode(DPinBuzzer , OUTPUT);
pinMode(DPinKey ,INPUT);
myservo.attach(3);
Timer1.initialize(timerInterval);
Timer1.attachInterrupt( autoServoControl );
attachInterrupt(DPinKey,interruptKeyControlLed,CHANGE);
}
void loop()
{
lcd.setCursor(5, 0);
lcd.print(getTemperature(APinTemp));
lcd.setCursor(0, 1);
lcd.print(getBright(APinBright));
delay(100);
}
float getTemperature(int Pin)
{
int a;
float temperature;
int B = 3975; //B value of the thermistor
float resistance;
a = analogRead(Pin);
resistance = (float)(1023 - a) * 10000 / a;
temperature = 1 / (log(resistance / 10000) / B + 1 / 298.15) - 273.15;
return temperature;
}
float getBright(int Pin)
{
float Rsensor = 0;
int sensorValue = analogRead(Pin);
Rsensor = (float)(1023 - sensorValue) * 10 / sensorValue;
if (Rsensor > thresholdvalue)
{
//digitalWrite(DPinLed, HIGH);
}
else
{
//digitalWrite(DPinLed, LOW);
}
return Rsensor;
}
void autoServoControl()
{
int val = 0;
val = analogRead(APinPot);
val = map(val, 0, 1023, 0, 179);
myservo.write(val);
}
void interruptKeyControlLed()
{
digitalWrite(DPinLed, !digitalRead(DPinLed));
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/