blackBox.cpp

00001 // Hello World! for the TextLCD
00002 
00003 #include "mbed.h"
00004 #include "TextLCD.h"
00005 
00006 TextLCD lcd(p22, p16, p17, p18, p19, p20, TextLCD::LCD16x2); // rs, e, d4-d7
00007 Serial ftdi(USBTX, USBRX);
00008 DigitalIn crash(p21); //crash sensor input (high/low);
00009 LocalFileSystem local("local");      // define local file system
00010 
00011 BusOut myleds(LED1,LED2,LED3, LED4);  //
00012 
00013 AnalogIn adc1(p15);  //ADC, speed sensor
00014 float speed=0;
00015 
00016 int count=0;                         // button count 
00017 struct tm t;                         // declaring RTC. current time will be stored here
00018 
00019 
00020 
00021 int main() {
00022     lcd.printf("Welcome!\n");
00023     //setting RTC and initializing RTC
00024     t.tm_year = 2015;     // current year
00025     t.tm_mon = 7;         // current month
00026     t.tm_mday = 7;        // current day
00027     t.tm_hour = 15;       // current hour
00028     t.tm_min = 16;        // current minute
00029     t.tm_sec = 0;         // current second   
00030     t.tm_year = t.tm_year - 1900;   // adjust for tm structure required values
00031     t.tm_mon = t.tm_mon - 1;
00032     set_time(mktime(&t));           // set the time
00033     
00034     FILE* Logfile = fopen ("/local/log.txt","w");
00035     fclose(Logfile);
00036     
00037     
00038         
00039     while(1) 
00040     {
00041         time_t seconds = time(NULL);
00042         if(crash.read()==0)          // if the button is pressed
00043         {   
00044             while(crash.read()==0);  // wait until release
00045             wait_ms(20);              // button debounce
00046             count++;                  // count up
00047             
00048             speed=adc1*120;
00049             
00050             ftdi.printf("Time: %s \rcount: %d \r\nSpeed: %f \r\n",ctime(&seconds),count, speed);         // send data to terminal
00051             ftdi.printf("-------------------------- \r\n");
00052             myleds=count; //display count on LED
00053             lcd.cls();
00054             lcd.printf("Speed: %0.1f \n",speed); //display speed on LCD
00055             
00056             
00057             FILE* Logfile = fopen ("/local/log.txt","a");                                  // open file for appending  
00058             
00059             fprintf(Logfile, "Time: %s \rcount: %d \r\nSpeed: %f \r\n",ctime(&seconds),count, speed);    // save data to log.txt file
00060             fprintf(Logfile, "-------------------------- \r\n");
00061             fclose(Logfile);  
00062             }
00063             else
00064             {
00065                 myleds=0;
00066                 wait(1);
00067                 myleds=10;
00068                 wait(1);
00069                 }
00070                 
00071          }  
00072     
00073 }