main.cpp

00001 #include "mbed.h"
00002 #include "uLCD_4DGL.h"
00003 #include <iostream>
00004 #include <stdio.h>
00005 #include <stdlib.h>
00006 #include "rtos.h"
00007 DigitalOut myled(LED1);
00008 DigitalOut myled2(LED2);
00009 DigitalOut SSR(p20);
00010 #include "emic2.h"
00011 uLCD_4DGL uLCD(p28, p27, p29);
00012 emic2 myTTS(p9, p10); //serial RX,TX pins to emic
00013 //uLCD_4DGL uLCD(p28, p27, p29);
00014 Serial pc(p13, p14); //this is the xbee
00015 //Serial pc(USBTX, USBRX); //this is a computer connected to the mbed for testing purposes
00016 Mutex m;
00017 
00018 InterruptIn zerocross(p22);
00019 Timeout SSRtriggerOn;
00020 volatile float dim;
00021 volatile float saveDim;
00022 const float powerlinefrequency=60.000;
00023 
00024 void triggerOn()
00025 {
00026     SSR = 1;
00027 }
00028 
00029 void dimmer()
00030 {
00031     // turn off SSR at zero crossing
00032     SSR = 0;
00033     // compute time delay using dim value and set timer interrupt
00034     // triggers SSR after a small post zero crossing time delay
00035     SSRtriggerOn.attach(&triggerOn,(1.001 - dim)/(2*powerlinefrequency));
00036 }
00037 
00038 class TMP36
00039 {
00040 public:
00041 TMP36(PinName pin);
00042 TMP36();
00043 float read();
00044 private:
00045 //class sets up the AnalogIn pin
00046 AnalogIn _pin;
00047 };
00048 TMP36::TMP36(PinName pin) : _pin(pin) {} //This is an initializer list … more to come in class
00049 // _pin(pin) means pass pin to the AnalogIn constructor
00050 float TMP36::read()
00051 {
00052 //convert sensor reading to temperature in degrees C
00053 return ((_pin.read()*3.3)-0.500)*100.0;
00054 }
00055 TMP36 myTMP36(p15);
00056 
00057 void ttsThread(void const *args) {
00058     printf("starting up\n\r");
00059     myTTS.volume(18); //max volume
00060     string sentence;
00061     char letter;
00062     /*
00063     Whlie there is stuff in the buffer, continue to take characters out of the buffer
00064     and append it to the char array sentence
00065     When hit with a punctuation, send to TTS module
00066     If we see an *, which is sent by the toggle button, toggle the lamp.
00067     Erase sentence when finished with a command
00068     Need mutex so serial communications don't interrupt each other.
00069     */
00070     bool on = true;
00071     while(1) {
00072         if(pc.readable()){
00073             m.lock();
00074             myled2 = 1;
00075             int a = pc.getc();
00076             myled2 = 0;
00077             letter = (char)a;
00078             sentence = sentence + letter;
00079             if(letter == '!' || letter == '.' || letter == '?') {
00080                 sentence = "S" + sentence + "\r";
00081                 myTTS.speakf("%s", sentence);
00082                 myTTS.ready();
00083                 sentence = "";
00084 //            } else if (letter == '*') {
00085 //                dim = 0;
00086 //                wait(0.5);
00087 //                myled = !myled;
00088 //                sentence = "";   
00089             } else if (letter == '#') {
00090                 while(!pc.readable()){
00091                 }
00092                 a = pc.getc();
00093                 letter = (char)a;
00094                 float b = (float)letter - 48;
00095                 dim = b * 0.1;
00096                 wait(.05);
00097                 sentence = "";
00098             }
00099             m.unlock();
00100         }
00101 
00102         Thread::wait(1);
00103     }
00104 }
00105 int main() {
00106     zerocross.mode(PullNone);
00107     wait(0.2);
00108     zerocross.rise(&dimmer);
00109     Thread thread1(ttsThread);
00110     float tempC, tempF;
00111     int blue, red, color;
00112     while(1) {
00113     tempC = myTMP36.read(); //convert to degrees F
00114     tempF = (9.0*tempC)/5.0 + 32.0; //print current temp
00115     uLCD.cls();
00116     red = (tempF) * 2.55;
00117     (red <= 0 ? red = 0 : red = red);
00118     (red >= 255 ? red = 255 : red = red);
00119     blue = 255 - red;
00120     red = red << 16;
00121     color = red + blue;
00122     uLCD.color(color);
00123     m.lock();
00124     //send through xbee to pc
00125     pc.printf("%f\n", tempC);
00126     //send through usb for debugging
00127 //    pc2.printf("%f\n\r", tempC);
00128     uLCD.printf("%5.2f C \n\n%5.2f F \n\r\n", tempC, tempF);
00129     if(tempF < 32) {
00130         uLCD.printf("It's cold!");
00131     } else if (tempF < 50) {
00132         uLCD.printf("It's a little\nchilly!");
00133     } else if (tempF < 70) {
00134         uLCD.printf("It's not bad out,\nenjoy the day!");
00135     } else if (tempF < 85) {
00136         uLCD.printf("Ahh room\ntemperature!");
00137     } else {
00138         uLCD.printf("It's pretty hot!");
00139     }
00140     m.unlock();
00141     Thread::wait(500);
00142     }
00143 }