Diff: main.cpp

Revision:

0:01f3ce729f40

Child:

1:c33171654467

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 12 19:26:01 2021 +0000
@@ -0,0 +1,76 @@
+#include "mbed.h"
+#include "C12832.h"
+#include "DHT.h"
+
+
+C12832 lcd(p5, p7, p6, p8, p11);    //LCD screen
+DHT sensor(p20,DHT11); // Use the SEN11301P sensor
+DigitalOut fan(p18);
+
+int main()
+{
+
+//welcome message on LCD
+
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("Hello user");
+    lcd.locate(0,10);
+    lcd.printf("Greenhouse Control System");
+    wait(2.5);
+
+    lcd.cls();      //clear LCD
+
+    //infinte loop to check temperature after welcome message
+
+
+    int error = 0;
+    float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f;
+    lcd.cls();
+    char tmpString[16];
+    int temp_format = 0;
+    int humid_format = 0;
+
+    while(1) {
+
+        wait(2.0f);
+        error = sensor.readData();
+        if (0 == error) {
+            c   = sensor.ReadTemperature(CELCIUS);
+            f   = sensor.ReadTemperature(FARENHEIT);
+            k   = sensor.ReadTemperature(KELVIN);
+            h   = sensor.ReadHumidity();
+            dp  = sensor.CalcdewPoint(c, h);
+            dpf = sensor.CalcdewPointFast(c, h);
+            printf("Temperature in Kelvin: %4.2f, Celcius: %4.2f, Farenheit %4.2f\n", k, c, f);
+            printf("Humidity is %4.2f, Dewpoint: %4.2f, Dewpoint fast: %4.2f\n", h, dp, dpf);
+            printf("Tempformat: %d HumidFormat: %d\n", temp_format, humid_format);
+            switch(temp_format) {
+                case 0 :
+                    sprintf(tmpString, " Temp: %4.2fC", c);
+                    break;
+                case 1 :
+                    sprintf(tmpString, " Temp: %4.2fF", f);
+                    break;
+                case 2 :
+                    sprintf(tmpString, " Temp: %4.2fK", k);
+                    break;
+            }
+
+            //display the results onto the LCD
+            lcd.locate(0,0);
+            lcd.printf("Temperature: %4.2fC", c);
+            lcd.locate(0,10);
+            lcd.printf("Humidity: %4.2f", h);
+            wait(2);
+
+            //turn fan on if temperature is above 25
+            if(c > 21) fan=1;   //fan is on
+            else fan=0;         //Fan is off
+
+
+            //wait 2 seconds and check temp again
+            wait(2);
+        }
+    }
+}