Mustafa Yassin / Mbed 2 deprecated TemperatureBasedFanControl

Control fan speed by temperature sensor reading. Set point can be adjusted by buttons.

Dependencies:   mbed DebounceIn TextLCD DS1820

main.cpp@0:af20639f9907, 2021-12-02 (annotated)

Committer:
mustafayassin
Date:
Thu Dec 02 11:43:48 2021 +0000
Revision:
0:af20639f9907
Child:
1:d6ceed323d25
Initial implementation with key denouncing.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mustafayassin 0:af20639f9907 1 #include "mbed.h"
mustafayassin 0:af20639f9907 2 #include "TextLCD.h"
mustafayassin 0:af20639f9907 3 #include "DebounceIn.h"
mustafayassin 0:af20639f9907 4
mustafayassin 0:af20639f9907 5 /*
mustafayassin 0:af20639f9907 6 This basic example just shows how to read the ADC internal channels raw values.
mustafayassin 0:af20639f9907 7 Please look in the corresponding device reference manual for a complete
mustafayassin 0:af20639f9907 8 description of how to make a temperature sensor, VBat or Vref measurement.
mustafayassin 0:af20639f9907 9 */
mustafayassin 0:af20639f9907 10
mustafayassin 0:af20639f9907 11 // Temperature input
mustafayassin 0:af20639f9907 12 AnalogIn adc_temp1(A0);
mustafayassin 0:af20639f9907 13 AnalogIn adc_temp2(A1);
mustafayassin 0:af20639f9907 14 AnalogIn adc_temp3(A2);
mustafayassin 0:af20639f9907 15
mustafayassin 0:af20639f9907 16 // Switch input
mustafayassin 0:af20639f9907 17 DebounceIn tempUp(A3);
mustafayassin 0:af20639f9907 18 DebounceIn tempDown(A4);
mustafayassin 0:af20639f9907 19 DebounceIn onOff(A5);
mustafayassin 0:af20639f9907 20
mustafayassin 0:af20639f9907 21 // LCD
mustafayassin 0:af20639f9907 22 TextLCD lcd(D0, D1, D2, D3, D4, D5); // rs, e, d4-d7
mustafayassin 0:af20639f9907 23
mustafayassin 0:af20639f9907 24 // LED
mustafayassin 0:af20639f9907 25 DigitalOut led(LED1);
mustafayassin 0:af20639f9907 26
mustafayassin 0:af20639f9907 27 // PWM
mustafayassin 0:af20639f9907 28 PwmOut fan(D12);
mustafayassin 0:af20639f9907 29
mustafayassin 0:af20639f9907 30 uint8_t tempSetValue = 25; // degree
mustafayassin 0:af20639f9907 31 bool fanOn = false;
mustafayassin 0:af20639f9907 32 float fanDutyCycle = 0.0f;
mustafayassin 0:af20639f9907 33
mustafayassin 0:af20639f9907 34 //const uint8_t PRESS_DURATION = 5;
mustafayassin 0:af20639f9907 35
mustafayassin 0:af20639f9907 36 int main()
mustafayassin 0:af20639f9907 37 {
mustafayassin 0:af20639f9907 38 // Configure
mustafayassin 0:af20639f9907 39 tempUp.mode(PullUp);
mustafayassin 0:af20639f9907 40 tempDown.mode(PullUp);
mustafayassin 0:af20639f9907 41 onOff.mode(PullUp);
mustafayassin 0:af20639f9907 42 fan.period(4.0f); // period
mustafayassin 0:af20639f9907 43 fan.write(fanDutyCycle); // duty cycle
mustafayassin 0:af20639f9907 44
mustafayassin 0:af20639f9907 45 // Loop
mustafayassin 0:af20639f9907 46 while(1) {
mustafayassin 0:af20639f9907 47 float temp1 = (adc_temp1.read()*3.3f*100.0f);
mustafayassin 0:af20639f9907 48 lcd.printf("Temp1 = %.1f\n", temp1);
mustafayassin 0:af20639f9907 49 lcd.printf("");
mustafayassin 0:af20639f9907 50 printf("\033[2A");
mustafayassin 0:af20639f9907 51
mustafayassin 0:af20639f9907 52 if(tempUp == 0) tempSetValue++;
mustafayassin 0:af20639f9907 53 if(tempDown == 0) tempSetValue--;
mustafayassin 0:af20639f9907 54 if(onOff == 0) fanOn = !fanOn;
mustafayassin 0:af20639f9907 55 //if(temp1 > tempSetValue && fanOn) {
mustafayassin 0:af20639f9907 56 // fan.write(fanDutyCycle);
mustafayassin 0:af20639f9907 57 //} else {
mustafayassin 0:af20639f9907 58 // fan.write(0.0);
mustafayassin 0:af20639f9907 59 //}
mustafayassin 0:af20639f9907 60 led = !led;
mustafayassin 0:af20639f9907 61 wait(0.020);
mustafayassin 0:af20639f9907 62 }
mustafayassin 0:af20639f9907 63 }