main.cpp

00001 #include "mbed.h"
00002 #include "uLCD_4DGL.h"
00003 #include "PinDetect.h"
00004 #include "rtos.h"
00005 #include "Servo.h"
00006 
00007 uLCD_4DGL uLCD(p9,p10,p11); // serial tx, serial rx, reset pin;
00008 Serial pc(USBTX, USBRX); // tx, rx
00009 
00010 // pb
00011 PinDetect button1(p7,PullDown);
00012 PinDetect button2(p8,PullDown);
00013 
00014 // sensors
00015 AnalogIn waterSensor(p20);
00016 AnalogIn moistureSensor(p19);
00017 AnalogIn lightSensor(p18);
00018 
00019 // outputs
00020 PwmOut speaker(p21);
00021 PwmOut led(p22);
00022 PwmOut led1(LED1);
00023 // motors
00024 Servo Shade(p23);
00025 Servo Pipe(p24);
00026 
00027 
00028 Mutex myMut;
00029 volatile int button1_push = 0;
00030 volatile int button2_push = 0;
00031 volatile float setWaterLevel = 0.5;
00032 volatile float setMositLevel = 0.5;
00033 volatile float setLightLevel = 0.5;
00034 volatile float ShadePosition = 0.0;
00035 volatile float ShadePosition = 0.0;
00036 
00037 volatile int counting = 0; // keep track of how many seconds has passed
00038 
00039 // sensor readings
00040 volatile float water = 0.0;
00041 volatile float light = 0.0;
00042 volatile float moist = 0.0;
00043 
00044 // callback functinos for 2 pushbuttons
00045 void Button1_Callback (void) {button1_push = 1;}
00046 void Button2_Callback (void) {button2_push = 1;}
00047 
00048 // function for the buttons thread: adjust pre-set light levels
00049 void buttons_function(void const *argument){
00050     while(1){
00051         if (button1_push && button2_push)
00052         {
00053             uLCD.cls();
00054             uLCD.printf("DON'T PRESS THE BUTTON AT THE SAME TIME!\n\r");
00055             button1_push = button2_push = 0;
00056             uLCD.cls();
00057         }
00058         if (button1_push)
00059         {
00060             setLightLevel -= .1;
00061             button1_push = 0;
00062         }
00063         if (button2_push)
00064         {
00065             setLightLevel += .1;
00066             button2_push = 0;
00067         }
00068         if (setLightLevel<0) setLightLevel = 0;
00069         if (setLightLevel>1) setLightLevel = 1;
00070 
00071         myMut.lock();
00072         uLCD.locate(0,10);
00073         uLCD.printf("SetLightLevel: %1.1f\n\r", setLightLevel);
00074         myMut.unlock();
00075         Thread::wait(500);
00076     }    
00077 }
00078 
00079 // move the servos, also light an LED
00080 void motors_function(void const *argument){
00081     while(1){
00082         shadePosition = 1-light; // raise the shade when light 
00083         Shade = shadePosition);
00084         led.write(shadePosition)
00085         
00086         pipePosition = soil<0.6? 1:0;
00087         pipe = pipePosition;
00088         Thread::wait(1000);
00089     }
00090 }    
00091 
00092 int main() {
00093     uLCD.printf("\n\rstart printing\n");
00094     uLCD.cls();
00095     speaker.period(1.0/800.0);
00096 
00097     button1.attach_deasserted(&Button1_Callback);
00098     button1.setSampleFrequency();
00099     button2.attach_deasserted(&Button2_Callback);
00100     button2.setSampleFrequency();
00101 
00102     Thread buttons(buttons_function);
00103     Thread motors(motors_function);
00104 
00105     while(1) {
00106         water = waterSensor.read();
00107         moist = moistureSensor.read();
00108         light = lightSensor.read();
00109         myMut.lock();
00110         uLCD.locate(0,2);
00111         uLCD.printf("%d:\n\r",counting);
00112         uLCD.printf("water: %f\n\r",water);
00113         uLCD.printf("moist: %f\n\r",moist);
00114         uLCD.printf("light: %f\n\r",light);
00115         myMut.unlock();
00116         counting++;
00117          
00118         // sound the alarm if water level too low
00119         speaker = water<setWaterLevel? 0.5:0;
00120     
00121         Thread::wait(1000);
00122     }
00123 }