main.cpp

00001 #include "mbed.h"
00002 #include "SDFileSystem.h"
00003 #include "LM19_Driver.h"
00004 #include "PDV_Driver.h"
00005 
00006 
00007 
00008 
00009 //Lucy Damon- assignment 6- SD card
00010 
00011 
00012 
00013 
00014 Serial pc(USBTX, USBRX);
00015 SDFileSystem sd(p5, p6, p7, p8, "sd");
00016 LM19 t_sensor(p19);
00017 PDV photocell(p20);
00018 
00019 Timer print; 
00020 
00021 Timer log_timer; 
00022 
00023 
00024 
00025 int main()
00026 
00027 {
00028 
00029     int t; 
00030 
00031     pc.printf("Start Log File\n");   //starrting file
00032 
00033     mkdir("/sd/mydir", 0777); 
00034 
00035     FILE *fp = fopen("/sd/mydir/thm_ptc.txt", "w"); 
00036 
00037     
00038 
00039     pc.printf("file_opened \n"); //yay open the file
00040 
00041 
00042     if(fp == NULL) {
00043 
00044         error("Could not open file for write\n"); //booo bad file didnt open
00045 
00046     }
00047 
00048     fprintf(fp,"Start Log File\n"); 
00049 
00050     while(1) { //its going to repeat strings
00051 
00052         print.start(); 
00053 
00054         log_timer.start(); 
00055 
00056         if(log_timer.read()<31) { 
00057             if(print.read()>1) { 
00058 
00059 //temp code gained from LM19 driver
00060 
00061                 t=log_timer.read_ms(); 
00062                 pc.printf("$TEMP,1,2,%i,%.3f,%.3f;%\r\n",
00063 
00064                           t,
00065 
00066                           t_sensor.volt(),
00067 
00068                           t_sensor.temp());
00069 
00070                 fprintf(fp, "Time = %i, temp=%f, volts=%f\r\n", 
00071                         t, 
00072 
00073                         t_sensor.volt(), 
00074 
00075                         t_sensor.temp()); 
00076 
00077 //photocell code from PDV driver 
00078 
00079                 pc.printf("$PDV,1,2,%i,%.3f,%.3f;%\r\n",
00080 
00081                           t,
00082 
00083                           photocell.volt(),
00084 
00085                           photocell.resistance());
00086 
00087                 fprintf(fp, "Time = %i, volts=%f, resistance=%f\r\n", 
00088 
00089                         t, 
00090 
00091                         photocell.volt(), 
00092                         photocell.resistance()); 
00093 
00094                 print.reset(); //reset strings
00095             }
00096 
00097 //stuff to print when strings are done/ reached capacity
00098 
00099         } else {
00100             fprintf(fp, "Log = Full");
00101 
00102             fclose(fp); 
00103 
00104             pc.printf("Log = Successful \n");
00105 
00106             wait(1);
00107 
00108         }
00109 
00110     }
00111 
00112 }