Lauren Tolliday Nixon / Mbed 2 deprecated TempHumiSensor_RelayFan

Strawberry forever temperature and humidity sensor controlling fan

Dependencies:   mbed C12832 DHT DHT11

main.cpp@1:c33171654467, 2021-10-17 (annotated)

Committer:
tollidal
Date:
Sun Oct 17 10:27:16 2021 +0000
Revision:
1:c33171654467
Parent:
0:01f3ce729f40 
Strawberry Forever Fan controlled by temp & humidity sensor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tollidal 0:01f3ce729f40 1 #include "mbed.h"
tollidal 0:01f3ce729f40 2 #include "C12832.h"
tollidal 0:01f3ce729f40 3 #include "DHT.h"
tollidal 0:01f3ce729f40 4
tollidal 0:01f3ce729f40 5
tollidal 0:01f3ce729f40 6 C12832 lcd(p5, p7, p6, p8, p11); //LCD screen
tollidal 1:c33171654467 7 DHT sensor(p16,DHT11); // Use the SEN11301P sensor
tollidal 0:01f3ce729f40 8 DigitalOut fan(p18);
tollidal 0:01f3ce729f40 9
tollidal 0:01f3ce729f40 10 int main()
tollidal 0:01f3ce729f40 11 {
tollidal 0:01f3ce729f40 12
tollidal 0:01f3ce729f40 13 //welcome message on LCD
tollidal 0:01f3ce729f40 14
tollidal 0:01f3ce729f40 15 lcd.cls();
tollidal 0:01f3ce729f40 16 lcd.locate(0,0);
tollidal 0:01f3ce729f40 17 lcd.printf("Hello user");
tollidal 0:01f3ce729f40 18 lcd.locate(0,10);
tollidal 0:01f3ce729f40 19 lcd.printf("Greenhouse Control System");
tollidal 0:01f3ce729f40 20 wait(2.5);
tollidal 0:01f3ce729f40 21
tollidal 0:01f3ce729f40 22 lcd.cls(); //clear LCD
tollidal 0:01f3ce729f40 23
tollidal 0:01f3ce729f40 24 //infinte loop to check temperature after welcome message
tollidal 0:01f3ce729f40 25
tollidal 0:01f3ce729f40 26
tollidal 0:01f3ce729f40 27 int error = 0;
tollidal 0:01f3ce729f40 28 float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f;
tollidal 0:01f3ce729f40 29 lcd.cls();
tollidal 0:01f3ce729f40 30 char tmpString[16];
tollidal 0:01f3ce729f40 31 int temp_format = 0;
tollidal 0:01f3ce729f40 32 int humid_format = 0;
tollidal 0:01f3ce729f40 33
tollidal 0:01f3ce729f40 34 while(1) {
tollidal 0:01f3ce729f40 35
tollidal 0:01f3ce729f40 36 wait(2.0f);
tollidal 0:01f3ce729f40 37 error = sensor.readData();
tollidal 0:01f3ce729f40 38 if (0 == error) {
tollidal 0:01f3ce729f40 39 c = sensor.ReadTemperature(CELCIUS);
tollidal 0:01f3ce729f40 40 f = sensor.ReadTemperature(FARENHEIT);
tollidal 0:01f3ce729f40 41 k = sensor.ReadTemperature(KELVIN);
tollidal 0:01f3ce729f40 42 h = sensor.ReadHumidity();
tollidal 0:01f3ce729f40 43 dp = sensor.CalcdewPoint(c, h);
tollidal 0:01f3ce729f40 44 dpf = sensor.CalcdewPointFast(c, h);
tollidal 0:01f3ce729f40 45 printf("Temperature in Kelvin: %4.2f, Celcius: %4.2f, Farenheit %4.2f\n", k, c, f);
tollidal 0:01f3ce729f40 46 printf("Humidity is %4.2f, Dewpoint: %4.2f, Dewpoint fast: %4.2f\n", h, dp, dpf);
tollidal 0:01f3ce729f40 47 printf("Tempformat: %d HumidFormat: %d\n", temp_format, humid_format);
tollidal 0:01f3ce729f40 48 switch(temp_format) {
tollidal 0:01f3ce729f40 49 case 0 :
tollidal 0:01f3ce729f40 50 sprintf(tmpString, " Temp: %4.2fC", c);
tollidal 0:01f3ce729f40 51 break;
tollidal 0:01f3ce729f40 52 case 1 :
tollidal 0:01f3ce729f40 53 sprintf(tmpString, " Temp: %4.2fF", f);
tollidal 0:01f3ce729f40 54 break;
tollidal 0:01f3ce729f40 55 case 2 :
tollidal 0:01f3ce729f40 56 sprintf(tmpString, " Temp: %4.2fK", k);
tollidal 0:01f3ce729f40 57 break;
tollidal 0:01f3ce729f40 58 }
tollidal 0:01f3ce729f40 59
tollidal 0:01f3ce729f40 60 //display the results onto the LCD
tollidal 0:01f3ce729f40 61 lcd.locate(0,0);
tollidal 0:01f3ce729f40 62 lcd.printf("Temperature: %4.2fC", c);
tollidal 0:01f3ce729f40 63 lcd.locate(0,10);
tollidal 0:01f3ce729f40 64 lcd.printf("Humidity: %4.2f", h);
tollidal 0:01f3ce729f40 65 wait(2);
tollidal 0:01f3ce729f40 66
tollidal 1:c33171654467 67 //turn fan on if temperature is above 26
tollidal 1:c33171654467 68 if(c > 26) fan=1; //fan is on
tollidal 0:01f3ce729f40 69 else fan=0; //Fan is off
tollidal 0:01f3ce729f40 70
tollidal 0:01f3ce729f40 71
tollidal 0:01f3ce729f40 72 //wait 2 seconds and check temp again
tollidal 0:01f3ce729f40 73 wait(2);
tollidal 0:01f3ce729f40 74 }
tollidal 0:01f3ce729f40 75 }
tollidal 0:01f3ce729f40 76 }