Mathew Swabey / SDCard

SD card functionality

Dependents:   ELEC350_Project2 SDcard

SDCard.cpp@8:ee8f65745141, 2018-12-19 (annotated)

Committer:
Swabey89
Date:
Wed Dec 19 12:02:14 2018 +0000
Revision:
8:ee8f65745141
Parent:
7:393fa8184388
Child:
9:113f4934b907
on start, attempt to initialize and set initialized state to false is unable to.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Swabey89 0:0fc2cf27ff9e 1 #include "SDCard.hpp"
Swabey89 7:393fa8184388 2 #include <string>
Swabey89 3:c6e5dd2faa22 3
Swabey89 1:c3af0c26ded2 4 void SDcard(void)
Swabey89 0:0fc2cf27ff9e 5 {
Swabey89 7:393fa8184388 6 static time_t seconds;
Swabey89 2:9a5eea2adbf8 7
Swabey89 2:9a5eea2adbf8 8 //REQUIRES IMPROVEMENTS, SEE ONENOTE
Swabey89 0:0fc2cf27ff9e 9
Swabey89 2:9a5eea2adbf8 10 //Initialise the SD card
Swabey89 8:ee8f65745141 11 if (sd.init() != 0) {
Swabey89 8:ee8f65745141 12 pc->printf("WARNING:SD CARD INITIALISATION FAILED\n\r");
Swabey89 8:ee8f65745141 13 sd_init = false;
Swabey89 8:ee8f65745141 14 //lcd.cls();
Swabey89 8:ee8f65745141 15 //lcd.printf("CANNOT INIT SD");
Swabey89 8:ee8f65745141 16 //errorCode(FATAL);
Swabey89 2:9a5eea2adbf8 17 }
Swabey89 8:ee8f65745141 18 else
Swabey89 8:ee8f65745141 19 {
Swabey89 8:ee8f65745141 20 //Create a filing system for SD Card
Swabey89 8:ee8f65745141 21 fs = new FATFileSystem("sd", &sd);
Swabey89 8:ee8f65745141 22 pc->printf("SD CARD INITIALISED\n\r");
Swabey89 7:393fa8184388 23
Swabey89 8:ee8f65745141 24 //Open to WRITE
Swabey89 8:ee8f65745141 25 char fileDate[30];
Swabey89 8:ee8f65745141 26 seconds = time(NULL);
Swabey89 8:ee8f65745141 27 timeData = localtime(&seconds);
Swabey89 8:ee8f65745141 28 set_time(mktime(timeData));
Swabey89 8:ee8f65745141 29 strftime(fileDate, 30, "sd/log_%d_%m_%y.csv", timeData);
Swabey89 8:ee8f65745141 30
Swabey89 8:ee8f65745141 31 fp = fopen(fileDate,"a");
Swabey89 8:ee8f65745141 32
Swabey89 8:ee8f65745141 33 if (fp == NULL)
Swabey89 8:ee8f65745141 34 {
Swabey89 8:ee8f65745141 35 pc->printf("WARNING: COULD NOT OPEN FILE FOR WRITE\n\r");
Swabey89 8:ee8f65745141 36 //lcd.cls();
Swabey89 8:ee8f65745141 37 //lcd.printf("CANNOT OPEN FILE\n\n");
Swabey89 8:ee8f65745141 38 //errorCode(FATAL);
Swabey89 8:ee8f65745141 39 }
Swabey89 8:ee8f65745141 40 else
Swabey89 8:ee8f65745141 41 {
Swabey89 8:ee8f65745141 42 pc->printf("FILE OPEN FOR WRITING\n\r");
Swabey89 8:ee8f65745141 43 sd_init = true;
Swabey89 8:ee8f65745141 44 }
Swabey89 8:ee8f65745141 45 fclose(fp);
Swabey89 8:ee8f65745141 46 }
Swabey89 7:393fa8184388 47
Swabey89 8:ee8f65745141 48 //Last message before sampling begins - probably remove
Swabey89 2:9a5eea2adbf8 49 lcd.cls();
Swabey89 7:393fa8184388 50 lcd.printf("SYSTEM READY\n\n");
Swabey89 1:c3af0c26ded2 51 }
Swabey89 1:c3af0c26ded2 52
Swabey89 1:c3af0c26ded2 53 void SDread(int n)
Swabey89 1:c3af0c26ded2 54 {
Swabey89 3:c6e5dd2faa22 55 //Read n samples from the SD card
Swabey89 2:9a5eea2adbf8 56 if (n == -1) puts("Received command to read all");
Swabey89 2:9a5eea2adbf8 57 else printf("Received command to read %d\n", n);
Swabey89 2:9a5eea2adbf8 58 }
Swabey89 2:9a5eea2adbf8 59
Swabey89 2:9a5eea2adbf8 60 void SDdelete(int n)
Swabey89 2:9a5eea2adbf8 61 {
Swabey89 3:c6e5dd2faa22 62 //Delete n samples from the SD card
Swabey89 2:9a5eea2adbf8 63 if (n == -1) puts("Received command to delete all");
Swabey89 2:9a5eea2adbf8 64 else printf("Received command to delete %d\n", n);
Swabey89 1:c3af0c26ded2 65 }
Swabey89 1:c3af0c26ded2 66
Swabey89 3:c6e5dd2faa22 67 void SDaddSample(double temp, double pressure)
Swabey89 3:c6e5dd2faa22 68 {
Swabey89 4:dc767b5f917b 69 //Add the sampled data to the SD card
Swabey89 6:5646450f583b 70 yellowLED = !yellowLED; //debugging
Swabey89 4:dc767b5f917b 71 fp = fopen("/sd/q.csv","a");
Swabey89 3:c6e5dd2faa22 72 fprintf(fp, "%6.1f,%.2f\n\r", temp, pressure);
Swabey89 3:c6e5dd2faa22 73 fclose(fp);
Swabey89 3:c6e5dd2faa22 74 }
Swabey89 3:c6e5dd2faa22 75
Swabey89 1:c3af0c26ded2 76 void SDalive(void)
Swabey89 1:c3af0c26ded2 77 {
Swabey89 3:c6e5dd2faa22 78 //Signal that the SD thread is still alive
Swabey89 2:9a5eea2adbf8 79 //puts("SD THREAD ALIVE\n");
Swabey89 7:393fa8184388 80 }
Swabey89 7:393fa8184388 81