SD card functionality
Dependents: ELEC350_Project2 SDcard
SDCard.cpp@5:0d49326968ca, 2018-11-10 (annotated)
- Committer:
- Swabey89
- Date:
- Sat Nov 10 19:31:17 2018 +0000
- Revision:
- 5:0d49326968ca
- Parent:
- 4:dc767b5f917b
- Child:
- 6:5646450f583b
Operating, but serial terminal needs reworking to avoid queue being full
Who changed what in which revision?
User | Revision | Line number | New 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 | 4:dc767b5f917b | 20 | //FATFileSystem fs("sd", &sd); |
Swabey89 | 4:dc767b5f917b | 21 | fs = new FATFileSystem("sd", &sd); |
Swabey89 | 4:dc767b5f917b | 22 | |
Swabey89 | 2:9a5eea2adbf8 | 23 | //Open to WRITE |
Swabey89 | 4:dc767b5f917b | 24 | fp = fopen("/sd/q.csv","a"); |
Swabey89 | 2:9a5eea2adbf8 | 25 | if (fp == NULL) { |
Swabey89 | 2:9a5eea2adbf8 | 26 | error("Could not open file for write\n"); |
Swabey89 | 2:9a5eea2adbf8 | 27 | lcd.cls(); |
Swabey89 | 2:9a5eea2adbf8 | 28 | lcd.printf("CANNOT OPEN FILE\n\n"); |
Swabey89 | 2:9a5eea2adbf8 | 29 | errorCode(FATAL); |
Swabey89 | 2:9a5eea2adbf8 | 30 | } |
Swabey89 | 2:9a5eea2adbf8 | 31 | |
Swabey89 | 4:dc767b5f917b | 32 | |
Swabey89 | 3:c6e5dd2faa22 | 33 | fclose(fp); |
Swabey89 | 3:c6e5dd2faa22 | 34 | |
Swabey89 | 2:9a5eea2adbf8 | 35 | //Last message before sampling begins |
Swabey89 | 2:9a5eea2adbf8 | 36 | lcd.cls(); |
Swabey89 | 2:9a5eea2adbf8 | 37 | lcd.printf("READY\n\n"); |
Swabey89 | 2:9a5eea2adbf8 | 38 | |
Swabey89 | 3:c6e5dd2faa22 | 39 | |
Swabey89 | 3:c6e5dd2faa22 | 40 | |
Swabey89 | 2:9a5eea2adbf8 | 41 | //move? |
Swabey89 | 2:9a5eea2adbf8 | 42 | //Press either switch to unmount |
Swabey89 | 3:c6e5dd2faa22 | 43 | /* |
Swabey89 | 2:9a5eea2adbf8 | 44 | while ((SW1 == 0) && (SW2 == 0)) { |
Swabey89 | 2:9a5eea2adbf8 | 45 | |
Swabey89 | 3:c6e5dd2faa22 | 46 | |
Swabey89 | 2:9a5eea2adbf8 | 47 | //Write to SD (potentially slow) |
Swabey89 | 2:9a5eea2adbf8 | 48 | //fprintf(fp, "%6.1f,%.2f\n\r", temp, pressure); |
Swabey89 | 3:c6e5dd2faa22 | 49 | |
Swabey89 | 2:9a5eea2adbf8 | 50 | } |
Swabey89 | 2:9a5eea2adbf8 | 51 | |
Swabey89 | 2:9a5eea2adbf8 | 52 | //Close File |
Swabey89 | 2:9a5eea2adbf8 | 53 | fclose(fp); |
Swabey89 | 2:9a5eea2adbf8 | 54 | |
Swabey89 | 2:9a5eea2adbf8 | 55 | //Close down |
Swabey89 | 2:9a5eea2adbf8 | 56 | sd.deinit(); |
Swabey89 | 2:9a5eea2adbf8 | 57 | printf("Unmounted...\n"); |
Swabey89 | 2:9a5eea2adbf8 | 58 | lcd.cls(); |
Swabey89 | 2:9a5eea2adbf8 | 59 | lcd.printf("Unmounted...\n\n"); |
Swabey89 | 3:c6e5dd2faa22 | 60 | */ |
Swabey89 | 1:c3af0c26ded2 | 61 | } |
Swabey89 | 1:c3af0c26ded2 | 62 | |
Swabey89 | 1:c3af0c26ded2 | 63 | void SDread(int n) |
Swabey89 | 1:c3af0c26ded2 | 64 | { |
Swabey89 | 3:c6e5dd2faa22 | 65 | //Read n samples from the SD card |
Swabey89 | 2:9a5eea2adbf8 | 66 | if (n == -1) puts("Received command to read all"); |
Swabey89 | 2:9a5eea2adbf8 | 67 | else printf("Received command to read %d\n", n); |
Swabey89 | 2:9a5eea2adbf8 | 68 | } |
Swabey89 | 2:9a5eea2adbf8 | 69 | |
Swabey89 | 2:9a5eea2adbf8 | 70 | void SDdelete(int n) |
Swabey89 | 2:9a5eea2adbf8 | 71 | { |
Swabey89 | 3:c6e5dd2faa22 | 72 | //Delete n samples from the SD card |
Swabey89 | 2:9a5eea2adbf8 | 73 | if (n == -1) puts("Received command to delete all"); |
Swabey89 | 2:9a5eea2adbf8 | 74 | else printf("Received command to delete %d\n", n); |
Swabey89 | 1:c3af0c26ded2 | 75 | } |
Swabey89 | 1:c3af0c26ded2 | 76 | |
Swabey89 | 3:c6e5dd2faa22 | 77 | void SDaddSample(double temp, double pressure) |
Swabey89 | 3:c6e5dd2faa22 | 78 | { |
Swabey89 | 4:dc767b5f917b | 79 | //Add the sampled data to the SD card |
Swabey89 | 5:0d49326968ca | 80 | yellowLED = !yellowLED; |
Swabey89 | 4:dc767b5f917b | 81 | fp = fopen("/sd/q.csv","a"); |
Swabey89 | 3:c6e5dd2faa22 | 82 | fprintf(fp, "%6.1f,%.2f\n\r", temp, pressure); |
Swabey89 | 3:c6e5dd2faa22 | 83 | fclose(fp); |
Swabey89 | 3:c6e5dd2faa22 | 84 | } |
Swabey89 | 3:c6e5dd2faa22 | 85 | |
Swabey89 | 1:c3af0c26ded2 | 86 | void SDalive(void) |
Swabey89 | 1:c3af0c26ded2 | 87 | { |
Swabey89 | 3:c6e5dd2faa22 | 88 | //Signal that the SD thread is still alive |
Swabey89 | 2:9a5eea2adbf8 | 89 | //puts("SD THREAD ALIVE\n"); |
Swabey89 | 0:0fc2cf27ff9e | 90 | } |