Ben Gordon / Mbed OS ELEC351_GroupA_alternate

temp

SDReader.cpp@0:2a4af0cb6e8d, 2018-12-06 (annotated)

Committer:
BenRJG
Date:
Thu Dec 06 15:38:09 2018 +0000
Revision:
0:2a4af0cb6e8d
Imported Code from Kiel; Added button functionality; Added set DateTime Functionality

Who changed what in which revision?

UserRevisionLine numberNew contents of line
BenRJG 0:2a4af0cb6e8d 1 #include "SDReader.hpp"
BenRJG 0:2a4af0cb6e8d 2 #include "Button.hpp"
BenRJG 0:2a4af0cb6e8d 3
BenRJG 0:2a4af0cb6e8d 4 // Thread for saving DATA to the SD card
BenRJG 0:2a4af0cb6e8d 5 void SDThread(void)
BenRJG 0:2a4af0cb6e8d 6 {
BenRJG 0:2a4af0cb6e8d 7 // Create object SD of the SDReader class with set SPI pins
BenRJG 0:2a4af0cb6e8d 8 SDReader SD(PB_5, D12, D13, D10); // mosi, miso, sclk, cs
BenRJG 0:2a4af0cb6e8d 9
BenRJG 0:2a4af0cb6e8d 10 // Create switch to dismount the SD card
BenRJG 0:2a4af0cb6e8d 11 BUTTON onBoardSwitch(USER_BUTTON);
BenRJG 0:2a4af0cb6e8d 12
BenRJG 0:2a4af0cb6e8d 13 // Create variable to store state of SD card
BenRJG 0:2a4af0cb6e8d 14 enum State {MOUNTED, UNMOUNTED, MOUNTING, UNMOUNTING};
BenRJG 0:2a4af0cb6e8d 15 State Mounted = MOUNTING;
BenRJG 0:2a4af0cb6e8d 16
BenRJG 0:2a4af0cb6e8d 17 while(1)
BenRJG 0:2a4af0cb6e8d 18 {
BenRJG 0:2a4af0cb6e8d 19 // FSM for each state of SD card
BenRJG 0:2a4af0cb6e8d 20 switch(Mounted)
BenRJG 0:2a4af0cb6e8d 21 {
BenRJG 0:2a4af0cb6e8d 22 case UNMOUNTED :
BenRJG 0:2a4af0cb6e8d 23 wait_ms(100);
BenRJG 0:2a4af0cb6e8d 24 if(onBoardSwitch.poll() == 1)
BenRJG 0:2a4af0cb6e8d 25 {
BenRJG 0:2a4af0cb6e8d 26 Mounted = MOUNTING;
BenRJG 0:2a4af0cb6e8d 27 }
BenRJG 0:2a4af0cb6e8d 28 break;
BenRJG 0:2a4af0cb6e8d 29
BenRJG 0:2a4af0cb6e8d 30 case MOUNTED :
BenRJG 0:2a4af0cb6e8d 31 //SD.UPLOAD(1.404f,0.303f,0.124f);
BenRJG 0:2a4af0cb6e8d 32 wait_ms(100);
BenRJG 0:2a4af0cb6e8d 33 if(onBoardSwitch.poll() == 1)
BenRJG 0:2a4af0cb6e8d 34 {
BenRJG 0:2a4af0cb6e8d 35 Mounted = UNMOUNTING;
BenRJG 0:2a4af0cb6e8d 36 }
BenRJG 0:2a4af0cb6e8d 37 break;
BenRJG 0:2a4af0cb6e8d 38
BenRJG 0:2a4af0cb6e8d 39 case UNMOUNTING :
BenRJG 0:2a4af0cb6e8d 40 SD.unmount();
BenRJG 0:2a4af0cb6e8d 41 Terminal_THREAD.signal_set(Signal_UnMount);
BenRJG 0:2a4af0cb6e8d 42 Mounted = UNMOUNTED;
BenRJG 0:2a4af0cb6e8d 43 break;
BenRJG 0:2a4af0cb6e8d 44
BenRJG 0:2a4af0cb6e8d 45 case MOUNTING :
BenRJG 0:2a4af0cb6e8d 46 if(SD.INIT() == 0){
BenRJG 0:2a4af0cb6e8d 47 Mounted = UNMOUNTED;
BenRJG 0:2a4af0cb6e8d 48 Terminal_THREAD.signal_set(Signal_UnMount);
BenRJG 0:2a4af0cb6e8d 49 } else {
BenRJG 0:2a4af0cb6e8d 50 Mounted = MOUNTED;
BenRJG 0:2a4af0cb6e8d 51 }
BenRJG 0:2a4af0cb6e8d 52 break;
BenRJG 0:2a4af0cb6e8d 53 }
BenRJG 0:2a4af0cb6e8d 54 }
BenRJG 0:2a4af0cb6e8d 55 }
BenRJG 0:2a4af0cb6e8d 56
BenRJG 0:2a4af0cb6e8d 57 BYTE SDReader::INIT(void)
BenRJG 0:2a4af0cb6e8d 58 {
BenRJG 0:2a4af0cb6e8d 59 BYTE Mount;
BenRJG 0:2a4af0cb6e8d 60
BenRJG 0:2a4af0cb6e8d 61 // call the SDBlockDevice instance initialisation method.
BenRJG 0:2a4af0cb6e8d 62 if(sd.init() != 0){
BenRJG 0:2a4af0cb6e8d 63 Mount = 0;
BenRJG 0:2a4af0cb6e8d 64 } else {
BenRJG 0:2a4af0cb6e8d 65 Mount = 1;
BenRJG 0:2a4af0cb6e8d 66 }
BenRJG 0:2a4af0cb6e8d 67
BenRJG 0:2a4af0cb6e8d 68 if(Mount == 0){
BenRJG 0:2a4af0cb6e8d 69 return Mount;
BenRJG 0:2a4af0cb6e8d 70 } else {
BenRJG 0:2a4af0cb6e8d 71 //Remove existing file
BenRJG 0:2a4af0cb6e8d 72 remove( "/sd/ELEC351.csv" );
BenRJG 0:2a4af0cb6e8d 73
BenRJG 0:2a4af0cb6e8d 74 FILE* fp = fopen("/sd/ELEC351.csv","a+");
BenRJG 0:2a4af0cb6e8d 75 //Check file handle (stream)
BenRJG 0:2a4af0cb6e8d 76 if (fp == NULL) {
BenRJG 0:2a4af0cb6e8d 77 return Mount;
BenRJG 0:2a4af0cb6e8d 78 }
BenRJG 0:2a4af0cb6e8d 79
BenRJG 0:2a4af0cb6e8d 80 //Put some text in the file...
BenRJG 0:2a4af0cb6e8d 81 fprintf(fp, " TIME STAMP, light, temperature, pressure\n");
BenRJG 0:2a4af0cb6e8d 82
BenRJG 0:2a4af0cb6e8d 83 //Close the file
BenRJG 0:2a4af0cb6e8d 84 fclose(fp);
BenRJG 0:2a4af0cb6e8d 85
BenRJG 0:2a4af0cb6e8d 86 return Mount;
BenRJG 0:2a4af0cb6e8d 87 }
BenRJG 0:2a4af0cb6e8d 88 }
BenRJG 0:2a4af0cb6e8d 89
BenRJG 0:2a4af0cb6e8d 90 void SDReader::UPLOAD(FLOAT_32 LIGHT, FLOAT_32 TEMP, FLOAT_32 PRESS)
BenRJG 0:2a4af0cb6e8d 91 {
BenRJG 0:2a4af0cb6e8d 92 FILE* fp = fopen("/sd/ELEC351.csv","a+");
BenRJG 0:2a4af0cb6e8d 93 //Check file handle (stream)
BenRJG 0:2a4af0cb6e8d 94 if (fp == NULL) {
BenRJG 0:2a4af0cb6e8d 95 return;
BenRJG 0:2a4af0cb6e8d 96 }
BenRJG 0:2a4af0cb6e8d 97
BenRJG 0:2a4af0cb6e8d 98 //Put some text in the file...
BenRJG 0:2a4af0cb6e8d 99 fprintf(fp, " TIME STAMP, %1.4f, %1.4f, %1.4f\n", LIGHT, TEMP, PRESS);
BenRJG 0:2a4af0cb6e8d 100
BenRJG 0:2a4af0cb6e8d 101 //Close the file
BenRJG 0:2a4af0cb6e8d 102 fclose(fp);
BenRJG 0:2a4af0cb6e8d 103 }
BenRJG 0:2a4af0cb6e8d 104
BenRJG 0:2a4af0cb6e8d 105 BYTE* SDReader::DOWNLOAD(void)
BenRJG 0:2a4af0cb6e8d 106 {
BenRJG 0:2a4af0cb6e8d 107 FILE* fp = fopen("/sd/ELEC351.csv","r");
BenRJG 0:2a4af0cb6e8d 108 if (fp == NULL) {
BenRJG 0:2a4af0cb6e8d 109
BenRJG 0:2a4af0cb6e8d 110 }
BenRJG 0:2a4af0cb6e8d 111
BenRJG 0:2a4af0cb6e8d 112 //Read back all strings
BenRJG 0:2a4af0cb6e8d 113 BYTE* s1 = new BYTE;
BenRJG 0:2a4af0cb6e8d 114
BenRJG 0:2a4af0cb6e8d 115 //while (fscanf(fp, "%s", s1) == 1)
BenRJG 0:2a4af0cb6e8d 116 //{
BenRJG 0:2a4af0cb6e8d 117 //
BenRJG 0:2a4af0cb6e8d 118 //}
BenRJG 0:2a4af0cb6e8d 119
BenRJG 0:2a4af0cb6e8d 120 fgets(s1, sizeof(s1), fp);
BenRJG 0:2a4af0cb6e8d 121
BenRJG 0:2a4af0cb6e8d 122 //Close File
BenRJG 0:2a4af0cb6e8d 123 fclose(fp);
BenRJG 0:2a4af0cb6e8d 124
BenRJG 0:2a4af0cb6e8d 125 return s1;
BenRJG 0:2a4af0cb6e8d 126 }
BenRJG 0:2a4af0cb6e8d 127
BenRJG 0:2a4af0cb6e8d 128 void SDReader::unmount(void)
BenRJG 0:2a4af0cb6e8d 129 {
BenRJG 0:2a4af0cb6e8d 130 sd.deinit();
BenRJG 0:2a4af0cb6e8d 131 return;
BenRJG 0:2a4af0cb6e8d 132 }
BenRJG 0:2a4af0cb6e8d 133