Diff: main.cpp

Revision:

0:814bd1653303

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Oct 12 16:04:49 2012 +0000
@@ -0,0 +1,182 @@
+#include "mbed.h"
+#include "VS1002.h"
+#include "TextLCD.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+#include "DebounceIn.h"
+#include "Motor.h"
+#include <string>
+#include<stdlib.h>
+#define PI 3.14
+#define DIAMETER 0.076                                    
+#define MINIMUM_FARE 11
+#define FARE_PER_KM 10
+
+TextLCD fareDisplay(p10, p18, p24, p23, p22, p21 );
+VS1002 audioDriver(p11, p12, p13, p8, "sd",
+           p5, p6, p7, p14, p15,
+           p16, p17, p20);
+EthernetNetIf ethernet;                 
+HTTPClient http;                   
+AnalogIn sensorReading(p19);
+DebounceIn setup(p9);
+DebounceIn startMeter(p20);
+DebounceIn stopMeter(p30);
+DebounceIn playFare(p29);
+Motor m(p25, p26, p27); 
+
+void initializeAudioDriver()
+{
+#ifndef FS_ONLY
+    audioDriver._RST = 1;
+    audioDriver.cs_high();                                   
+    audioDriver.sci_initialise();                            
+    audioDriver.sci_write(0x00,(SM_SDINEW+SM_STREAM+SM_DIFF));
+    audioDriver.sci_write(0x03, 0x9800);
+    audioDriver.sdi_initialise();
+#endif
+}
+
+float calculateFare(int noOfRevolutions)
+{
+    float distanceinKM;    
+    distanceinKM = noOfRevolutions*PI*DIAMETER;//For Demo purposes we do not divide by 1000 as would be in real scenario.
+    float fare;
+    if(distanceinKM>1)
+    fare = MINIMUM_FARE + FARE_PER_KM*(distanceinKM - 1); // Formula can be changed as per required or can be taken dynamically from a web server
+    else
+    fare = MINIMUM_FARE;
+    return fare;
+}
+
+
+void convertFareToSpeech(float fare)
+{
+    string ttsURL=" http://translate.google.com/translate_tts?tl=en&q=Your+Fare+is+;+";
+    char strFare[100];
+    sprintf(strFare,"%d",(int)fare);
+    ttsURL+=strFare; 
+    ttsURL+="+Rupees+.+Thank+you+for+the+ride+.+Have+a+Nice+Day+.";
+    //printf("%s\n",ttsURL);
+    HTTPFile audioOutput("/sd/Fare.mp3");
+    HTTPResult result = http.get(ttsURL.c_str(),&audioOutput);
+    if(result!=HTTP_OK)
+    {
+          printf("Error during speech convrsion!! Error Number : %d\n", result);
+    }
+    else
+    printf("Done\n");
+    audioDriver.play_song("/sd/Fare.mp3");
+    
+}
+
+void initialize_system()
+{    
+    setup.mode(PullUp);
+    wait(0.001);
+    startMeter.mode(PullUp);
+    wait(0.001);
+    stopMeter.mode(PullUp);
+    wait(0.001);
+    playFare.mode(PullUp);
+    wait(0.001);
+    wait(2);
+    fareDisplay.printf("PRESS SETUP");
+    printf("Press setup to continue.....\n");
+}
+
+int main()
+{ 
+    bool flag = false;
+    int noOfRevolutions =0;
+    float fare;
+    bool isMeterStopped=false;
+    
+    initialize_system();
+    
+    while(setup==1){wait(0.1);}
+    while(setup == 0){wait(0.1);}
+    fareDisplay.cls();
+    fareDisplay.printf("INITIALIZING...");
+
+    initializeAudioDriver();        
+    EthernetErr error = ethernet.setup();
+    if(error)
+    {
+        printf("Error in correction. Error number: %d.\n", error);
+        return -1;
+    }
+    printf(" Connection established\n");
+    
+    while(1)
+    {
+        fareDisplay.cls();
+        fareDisplay.printf("START METER");
+        printf("Press start to continue.....\n");
+        while(startMeter==1){wait(0.1);}
+        while(startMeter==0){wait(0.1);}
+        int new_val = 0;
+        int old_val =0;
+        fareDisplay.cls();
+        fareDisplay.printf("METER STARTED");
+        {        
+            m.speed(0.15); 
+        }
+        while(!isMeterStopped)
+        {
+            if(sensorReading>0.5)
+            {
+                flag=true;
+                wait(0.1);
+            }
+            if(flag)
+            {
+                if(sensorReading<0.4)
+                {
+                    flag=false;
+                    noOfRevolutions++;                     
+                }
+            }
+            new_val = stopMeter;
+            if ((new_val==0) && (old_val==1))
+            {        
+               isMeterStopped = true;
+               fareDisplay.cls();
+               fareDisplay.printf("METER STOPPED !!");           
+               m.speed(0);
+            }   
+             old_val=new_val; 
+             wait(0.1);
+        }
+        
+         if(isMeterStopped)
+         {
+            isMeterStopped = false;
+            fare = calculateFare(noOfRevolutions);
+            fareDisplay.cls();
+            fareDisplay.printf("The Fare is: %d",(int)fare);
+            printf("The no of revolutions is: %d\n; The Fare is: %d\n",(int)noOfRevolutions,(int)fare);
+            convertFareToSpeech(fare);
+         }   
+         bool isExit =false;
+         while(1)
+         {         
+            while(playFare==1)
+            {
+                new_val = stopMeter;    
+                if ((new_val==0) && (old_val==1))
+                {  
+                  isExit = true;      
+                  break;
+                }   
+                 old_val=new_val; 
+                 wait(0.2);
+             }
+            while(playFare==0){wait(0.1);}
+            if(isExit)
+            break;
+            audioDriver.play_song("/sd/Fare.mp3");
+            
+         }
+     }  
+}