Montvydas Klumbys
Auto-Greenhouse project
Revision 0:85f540673fe1, committed 2015-05-29
- Comitter:
- moklumbys
- Date:
- Fri May 29 15:28:26 2015 +0000
- Commit message:
- final part? almost...;
Changed in this revision
diff -r 000000000000 -r 85f540673fe1 DHT11.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DHT11.lib Fri May 29 15:28:26 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/s_inoue_mbed/code/DHT11/#e91c151d1798
diff -r 000000000000 -r 85f540673fe1 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri May 29 15:28:26 2015 +0000
@@ -0,0 +1,187 @@
+#include "mbed.h"
+#include "string.h"
+#include "DHT11.h"
+
+#define TEMPERATURE_OFFSET 0.0f //in degrees +- temperature from the mean point
+#define GROUND_HUMIDITY_OFFSET 0.0f//in percentage
+
+//for reference and real values
+// 0 - inside temperature, 1 - inside humidity, 2 - ground humidity, 3 - light intensity
+
+//for actuator
+// 0 - heater (digital), 1 - ventilator(digital), 2 - water valve(digital), 3 - LEDs(analogue)
+
+//-----------------------------Ini Classes-----------------------------
+Serial bt(D10, D2); //initiate bluetooth
+Serial pc(USBTX,USBRX); //and pc serial connections
+DigitalOut myled(LED1); //and an LED
+PwmOut light(D11);
+DigitalOut valve(D4);
+DigitalOut heater(D5);
+DigitalOut ventilator(D6);
+
+AnalogIn lightSensor(A0);
+AnalogIn humiditySensor(A1);
+DHT11 dht(A2);
+//------------------------Function prototypes--------------------------
+void onRequest();
+void onUpdate();
+void compareLight();
+void compareMoisture();
+void compareTemperature();
+void senseLight();
+void senseMoisture();
+void senseDHT11();
+//-------------------------------------ISR-----------------------------
+ char word[11];
+ float reference[4];
+ float real[4];
+ float actuator[4];
+
+void ISR()
+{
+ if(bt.readable()) {
+ bt.scanf ("%10s", word);
+ if (strcmp(word, "request")==0)
+ {
+ onRequest();
+ }
+ if (strcmp(word, "update")==0)
+ {
+ onUpdate();
+ }
+ }
+}
+
+//-----------------------------------MAIN------------------------------
+int main()
+{
+ light.period_ms(20);
+ reference[0] = 25; //temperature
+ reference[1] = 25; //air humidity
+ reference[3] = 55; //light intensity
+ reference[2] = 30; //ground humidity
+
+ bt.baud(9600);
+ pc.baud(115200);
+
+ bt.attach(&ISR); //attach an interrupt on a bt serial connection
+ light = 0.0;
+
+ pc.printf ("Oh well...\n");
+ real[3] = 0.0;
+ while(1) {
+ //here disable interrupts
+ // __disable_irq();
+
+ senseLight();
+ senseMoisture();
+ senseDHT11();
+
+ pc.printf ("temp=%.2f, hum=%.2f, moist=%.2f, inten=%.2f\n", real[0], real[1], real[2], real[3]);
+
+ compareLight ();
+ compareMoisture ();
+ compareTemperature();
+
+ //here enable interrupts
+ // __enable_irq();
+
+ wait(3.0f);
+ }
+}
+
+//--------------------------------Functions------------------------------------------
+//*********************************REQUEST info from sensors*************************
+void onRequest()
+{
+ // bt.printf ("%d\n", 1);
+ //bt.printf ("temp=%.1f, hum=%.1f, groundHum=%.1f, inten=%.1f\n", 10.0, 20.0, 30.0, 40.0);
+ // for (int i = 0; i < 4; i++)
+ // {
+ // bt.printf ("%.2f\n", real[i]);
+ // bt.printf ("%d\n", (int)real[i]);
+ // }
+ bt.printf ("%d\n", (int)real[0]);
+ bt.printf ("%d\n", (int)real[1]);
+ bt.printf ("%d\n", (int)real[2]);
+ bt.printf ("%d\n", (int)real[3]);
+}
+//***********************************UPDATE info from phone**************************
+void onUpdate()
+{
+ int i = 0;
+ char buff;
+
+ while(true)
+ {
+ if (bt.readable()) //read off 4 values - references
+ {
+ if(!bt.scanf ("%f", &reference[i]))
+ bt.scanf ("%c", &buff); //if not float, put info buffer and through out..
+ else
+ i++;
+ }
+ if (i == 4) break; //after getting enough values go back to normal loop
+ }
+ pc.printf ("%.1f, %.1f, %.1f, %.1f\n", reference[0], reference[1], reference[2], reference[3]);
+}
+//******************************LIGHT intensity function*****************************
+void compareLight()
+{
+ if ((reference[3] > real[3]) && (light < 1.0f)) //if not enough of light - turn on additional light little by little
+ light = light + 0.05f;
+ else if ((reference[3] < real[3]) && (light > 0.0f)) //if enough of light - turn off the light little by little
+ light = light - 0.05f;
+}
+//****************************GROUND moisture detection*****************************
+void compareMoisture()
+{
+ if (reference[2] - GROUND_HUMIDITY_OFFSET > real[2]) //if moisture drops below the reference - offset, turn on valve with water
+ valve = 1;
+ else
+ valve = 0;
+}
+//*****************************TEMPERATURE sensor************************************
+void compareTemperature()
+{
+ if (reference[0] + TEMPERATURE_OFFSET < real[0]) //if above the reference + offset, turn on ventilator
+ {
+ ventilator = 1;
+ heater = 0;
+ }
+ else if (reference[0] - TEMPERATURE_OFFSET > real[0]) //if below reference - offset, then turn on heater
+ {
+ ventilator = 0;
+ heater = 1;
+ }
+ else //else let the plants grow!
+ {
+ heater = 0;
+ ventilator = 0;
+ }
+}
+//******************************************READ LIGHT*******************************
+void senseLight()
+{
+ real[3] = lightSensor.read()*100.0;
+}
+//*****************************************READ Moisture*****************************
+void senseMoisture()
+{
+ real[2] = (1.0-humiditySensor.read())*100.0;
+}
+//****************************************READ temperature***************************
+void senseDHT11()
+{
+ int s = dht.readData();
+ if (s != DHT11::OK)
+ {
+ printf("Error!\r\n");
+ }
+ else
+ {
+ real[0] = dht.readTemperature();
+ real[1] = dht.readHumidity();
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r 85f540673fe1 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri May 29 15:28:26 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/cbbeb26dbd92 \ No newline at end of file