Diff: main.cpp

Revision:

84:fc8c9b39723a

Parent:

77:c65eae5b9958

Child:

85:0cf65ceb4492

--- a/main.cpp	Mon Dec 11 21:51:32 2017 +0000
+++ b/main.cpp	Wed Mar 06 21:11:49 2019 +0000
@@ -23,6 +23,9 @@
 #include "cell_modem.h"
 #include "hardware.h"
 
+#include "DHT.h"
+float current_temp = 0.0f, rel_humid = 0.0f;
+
 I2C i2c(PTC11, PTC10);    //SDA, SCL -- define the I2C pins being used
 MODSERIAL pc(USBTX, USBRX, 256, 256); // tx, rx with default tx, rx buffer sizes
 MODSERIAL mdm(PTD3, PTD2, 4096, 4096);
@@ -205,8 +208,24 @@
     }
 } //parse_JSON
 
+//DigitalIn btn_temp_up(D4);
+//DigitalIn btn_temp_down(D8);
+DigitalIn btn_silence(D7);
+DigitalIn motion(D3);
+DigitalOut buzzer(D5);
+
+AnalogIn pot_temp_set(A3);
+DHT sensor(D4, DHT11);
+
 int main() {
     static unsigned ledOnce = 0;
+    int error = 0; 
+    float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f; 
+    float value = 0.0f;
+    float temp_setting = 0.0f, diff = 0.0f;
+    int mycolor = 0x0;
+    bool alarm = false;
+
     //delay so that the debug terminal can open after power-on reset:
     wait (5.0);
     pc.baud(115200);
@@ -234,6 +253,12 @@
     OneMsTicker.attach(OneMsFunction, 0.001f) ;
 
     // Send and receive data perpetually
+    
+    mycolor = 0x0;
+    SetLedColor(mycolor);
+    
+    buzzer = 0;
+    
     while(1) {
         #ifdef USE_VIRTUAL_SENSORS
         ProcessUsbInterface();
@@ -252,8 +277,83 @@
                     ledOnce = 1;
                     SetLedColor(0x2); //Green
                 }
-                parse_JSON(&myJsonResponse[0]);
+                //parse_JSON(&myJsonResponse[0]);
             }
         } //bTimerExpiredFlag
+        
+        //--------------------------------begin new code--------------------------------
+        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); 
+        } 
+        else 
+        { 
+            //printf("Error: %d\n", error); 
+        }         
+        
+        value = pot_temp_set; 
+        //printf("Slide location %3.6f\r\n", value);
+        temp_setting = value * 40.0f + 50.0f;
+        printf(WHT "Thermostat is set to %3.2f degrees.\r\n", temp_setting);
+        
+        //current_temp and rel_humid are assigned in sensors.cpp
+        printf(WHT "Current temperature is %3.2f degrees.\r\n", current_temp);
+        printf(WHT "Relative humidity is %3.2f percent.\r\n", rel_humid);
+        
+        printf(WHT "\r\n");
+        
+        diff = current_temp - temp_setting;
+        if ((diff > -2.0f && diff < 2.0f && rel_humid < 40.0f) && mycolor != 0x0) //if temperature is near optimal, and it is not humid, turn off heat and AC.
+        {
+            mycolor = 0x0;
+            SetLedColor(mycolor); 
+        }
+        if ((diff > -2.0f && diff < 2.0f && rel_humid > 40.0f) && mycolor != 0x2) //if temperature is near optimal, and it is humid, use fan only.
+        {
+            mycolor = 0x2;
+            SetLedColor(mycolor); 
+        }
+        if (diff > 4.0f && mycolor != 0x4) //if it is too hot, turn on AC.
+        {
+            mycolor = 0x4;
+            SetLedColor(mycolor); 
+        }
+        if (diff < -4.0f && mycolor != 0x1) //if it is too cold, turn on heat.
+        {
+            mycolor = 0x1;
+            SetLedColor(mycolor); 
+        }
+        
+        //if motion sensor detects motion, sound an alarm
+        if ((motion == 1) && !alarm)
+        {
+            alarm = true;
+            printf(WHT "--------------------------------\r\n");
+            printf(WHT "Alert! Home intrusion detected!\r\n");
+            printf(WHT "--------------------------------\r\n");
+            printf(WHT "\r\n");
+        }
+        if ((btn_silence == 1) && alarm)
+        {
+            alarm = false;
+            buzzer = 0;
+            printf(WHT "Alarm disengaged. Resuming normal operation.\r\n");
+            printf(WHT "\r\n");
+        }
+        if (alarm)
+        {
+            buzzer = !buzzer;
+        }
+        
+        wait(1.0);
+        
     } //forever loop
 }