Mathew Swabey / SDCard

SD card functionality

Dependents:   ELEC350_Project2 SDcard

SDCard.cpp@3:c6e5dd2faa22, 2018-11-09 (annotated)

Committer:
Swabey89
Date:
Fri Nov 09 17:56:55 2018 +0000
Revision:
3:c6e5dd2faa22
Parent:
2:9a5eea2adbf8
Child:
4:dc767b5f917b
SD card now has new functions, one will write the sampled data to the SD card

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Swabey89 0:0fc2cf27ff9e 1 #include "SDCard.hpp"
Swabey89 0:0fc2cf27ff9e 2
Swabey89 3:c6e5dd2faa22 3
Swabey89 3:c6e5dd2faa22 4
Swabey89 1:c3af0c26ded2 5 void SDcard(void)
Swabey89 0:0fc2cf27ff9e 6 {
Swabey89 1:c3af0c26ded2 7
Swabey89 2:9a5eea2adbf8 8
Swabey89 2:9a5eea2adbf8 9 //REQUIRES IMPROVEMENTS, SEE ONENOTE
Swabey89 0:0fc2cf27ff9e 10
Swabey89 2:9a5eea2adbf8 11 //Initialise the SD card
Swabey89 2:9a5eea2adbf8 12 if ( sd.init() != 0) {
Swabey89 2:9a5eea2adbf8 13 printf("Init failed \n");
Swabey89 2:9a5eea2adbf8 14 lcd.cls();
Swabey89 2:9a5eea2adbf8 15 lcd.printf("CANNOT INIT SD");
Swabey89 2:9a5eea2adbf8 16 errorCode(FATAL);
Swabey89 2:9a5eea2adbf8 17 }
Swabey89 2:9a5eea2adbf8 18
Swabey89 2:9a5eea2adbf8 19 //Create a filing system for SD Card
Swabey89 2:9a5eea2adbf8 20 FATFileSystem fs("sd", &sd);
Swabey89 2:9a5eea2adbf8 21
Swabey89 2:9a5eea2adbf8 22 //Open to WRITE
Swabey89 3:c6e5dd2faa22 23 FILE* fp = fopen("/sd/newtest.csv","a");
Swabey89 2:9a5eea2adbf8 24 if (fp == NULL) {
Swabey89 2:9a5eea2adbf8 25 error("Could not open file for write\n");
Swabey89 2:9a5eea2adbf8 26 lcd.cls();
Swabey89 2:9a5eea2adbf8 27 lcd.printf("CANNOT OPEN FILE\n\n");
Swabey89 2:9a5eea2adbf8 28 errorCode(FATAL);
Swabey89 2:9a5eea2adbf8 29 }
Swabey89 2:9a5eea2adbf8 30
Swabey89 3:c6e5dd2faa22 31 fclose(fp);
Swabey89 3:c6e5dd2faa22 32
Swabey89 2:9a5eea2adbf8 33 //Last message before sampling begins
Swabey89 2:9a5eea2adbf8 34 lcd.cls();
Swabey89 2:9a5eea2adbf8 35 lcd.printf("READY\n\n");
Swabey89 2:9a5eea2adbf8 36
Swabey89 3:c6e5dd2faa22 37
Swabey89 3:c6e5dd2faa22 38
Swabey89 2:9a5eea2adbf8 39 //move?
Swabey89 2:9a5eea2adbf8 40 //Press either switch to unmount
Swabey89 3:c6e5dd2faa22 41 /*
Swabey89 2:9a5eea2adbf8 42 while ((SW1 == 0) && (SW2 == 0)) {
Swabey89 2:9a5eea2adbf8 43
Swabey89 3:c6e5dd2faa22 44
Swabey89 2:9a5eea2adbf8 45 //Write to SD (potentially slow)
Swabey89 2:9a5eea2adbf8 46 //fprintf(fp, "%6.1f,%.2f\n\r", temp, pressure);
Swabey89 3:c6e5dd2faa22 47
Swabey89 2:9a5eea2adbf8 48 }
Swabey89 2:9a5eea2adbf8 49
Swabey89 2:9a5eea2adbf8 50 //Close File
Swabey89 2:9a5eea2adbf8 51 fclose(fp);
Swabey89 2:9a5eea2adbf8 52
Swabey89 2:9a5eea2adbf8 53 //Close down
Swabey89 2:9a5eea2adbf8 54 sd.deinit();
Swabey89 2:9a5eea2adbf8 55 printf("Unmounted...\n");
Swabey89 2:9a5eea2adbf8 56 lcd.cls();
Swabey89 2:9a5eea2adbf8 57 lcd.printf("Unmounted...\n\n");
Swabey89 3:c6e5dd2faa22 58 */
Swabey89 1:c3af0c26ded2 59 }
Swabey89 1:c3af0c26ded2 60
Swabey89 1:c3af0c26ded2 61 void SDread(int n)
Swabey89 1:c3af0c26ded2 62 {
Swabey89 3:c6e5dd2faa22 63 //Read n samples from the SD card
Swabey89 2:9a5eea2adbf8 64 if (n == -1) puts("Received command to read all");
Swabey89 2:9a5eea2adbf8 65 else printf("Received command to read %d\n", n);
Swabey89 2:9a5eea2adbf8 66 }
Swabey89 2:9a5eea2adbf8 67
Swabey89 2:9a5eea2adbf8 68 void SDdelete(int n)
Swabey89 2:9a5eea2adbf8 69 {
Swabey89 3:c6e5dd2faa22 70 //Delete n samples from the SD card
Swabey89 2:9a5eea2adbf8 71 if (n == -1) puts("Received command to delete all");
Swabey89 2:9a5eea2adbf8 72 else printf("Received command to delete %d\n", n);
Swabey89 1:c3af0c26ded2 73 }
Swabey89 1:c3af0c26ded2 74
Swabey89 3:c6e5dd2faa22 75 void SDaddSample(double temp, double pressure)
Swabey89 3:c6e5dd2faa22 76 {
Swabey89 3:c6e5dd2faa22 77 //Add the sampled data to the SD card
Swabey89 3:c6e5dd2faa22 78
Swabey89 3:c6e5dd2faa22 79 FILE* fp = fopen("/sd/newtest.csv","a");
Swabey89 3:c6e5dd2faa22 80 fprintf(fp, "%6.1f,%.2f\n\r", temp, pressure);
Swabey89 3:c6e5dd2faa22 81 fclose(fp);
Swabey89 3:c6e5dd2faa22 82 puts("SAMPLE ADDED TO SD CARD");
Swabey89 3:c6e5dd2faa22 83 }
Swabey89 3:c6e5dd2faa22 84
Swabey89 1:c3af0c26ded2 85 void SDalive(void)
Swabey89 1:c3af0c26ded2 86 {
Swabey89 3:c6e5dd2faa22 87 //Signal that the SD thread is still alive
Swabey89 2:9a5eea2adbf8 88 //puts("SD THREAD ALIVE\n");
Swabey89 0:0fc2cf27ff9e 89 }