SD card functionality
Dependents: ELEC350_Project2 SDcard
SDCard.cpp
- Committer:
- Swabey89
- Date:
- 2019-01-02
- Revision:
- 15:e1f62dd17e3c
- Parent:
- 14:8e92eb9fc088
- Child:
- 16:23b3be671415
File content as of revision 15:e1f62dd17e3c:
#include "SDCard.hpp" #include <string> void SDcard(void) { SD_tout.attach(SD_toutISR,TOUT_TIME_DEF); static time_t seconds; //static reqiured? //Initialise the SD card if (sd.init() != 0) { /* printlock.lock(); pc->printf("WARNING:SD CARD INITIALISATION FAILED\n\r"); printlock.unlock(); */ printQueue.call(printf,"WARNING:SD CARD INITIALISATION FAILED\n\r"); sd_init = false; //lcd.cls(); //lcd.printf("CANNOT INIT SD"); //errorCode(FATAL); } else { //Create a filing system for SD Card fs = new FATFileSystem("sd", &sd); /* printlock.lock(); pc->printf("\nSD CARD INITIALISED\n\r"); printlock.unlock(); */ printQueue.call(printf,"\nSD CARD INITIALISED\n\r"); //Open to WRITE char fileDate[30]; timeLock.lock(); seconds = time(NULL); timeData = localtime(&seconds); set_time(mktime(timeData)); strftime(fileDate, 30, "sd/log_%d_%m_%y.csv", timeData); timeLock.unlock(); fp = fopen(fileDate,"a"); if (fp == NULL) { /* printlock.lock(); pc->printf("WARNING: COULD NOT OPEN FILE FOR WRITE\n\r"); printlock.unlock(); */ printQueue.call(printf,"WARNING: COULD NOT OPEN FILE FOR WRITE\n\r"); //lcd.cls(); //lcd.printf("CANNOT OPEN FILE\n\n"); //errorCode(FATAL); } else { /* printlock.lock(); pc->printf("FILE OPEN FOR WRITING\n\n\n\r"); printlock.unlock(); */ printQueue.call(printf,"FILE OPEN FOR WRITING\n\n\n\r"); sd_init = true; } fclose(fp); } SD_tout.detach(); } void SDread(int n) { //printlock.lock(); bufferLock.lock(); SD_tout.attach(SD_toutISR,TOUT_TIME_SDREAD); //Read n samples from the SD card unsigned int i=0; unsigned int j = newestIndex; if (n==-1) {n = (BUFFERSIZE-Nspaces);} while (i < n) //ONLY USE SPACE AVAILABLE - KEEP IN MIND LAST READ WAS BEFORE IT WAS DECREMENTED { printQueue.call(printf,"Date/Time: %s\tTemperature: %5.2f\tPressure: %5.2f\tLight: %5.2f\n\r", buffer[j].getTime(), buffer[j].gettemp(), buffer[j].getpress(), buffer[j].getlight()); //pc->printf("Date/Time: %s\tTemperature: %5.2f\tPressure: %5.2f\tLight: %5.2f\n\r", buffer[j].getTime(), buffer[j].gettemp(), buffer[j].getpress(), buffer[j].getlight()); j = (j?j:BUFFERSIZE)-1; i++; } bufferLock.unlock(); printQueue.call(printf,"%d records read\r\n\n", i); //printf("%d records read\r\n\n", i); //printlock.unlock(); SD_tout.detach(); } void SDdelete(int n) //MUST RELEASE SPACE AVAILABLE { bufferLock.lock(); SD_tout.attach(SD_toutISR,TOUT_TIME_DEF); //Delete n samples from the SD card unsigned int i = 0; if (n==-1) {n = (BUFFERSIZE-Nspaces);} while (i < n) { spaceAvailable.release(); i++; } bufferLock.unlock(); Nspaces += i; /* printlock.lock(); pc->printf("Deleted %d records\r\n\n\n", i); printlock.unlock(); */ printQueue.call(printf,"Deleted %d records\r\n\n\n", i); SD_tout.detach(); } void SDaddSample(string timedata, double temp, double pressure, float light, int buffind) { if(sd_init) { static time_t seconds; char fileDate[30]; timeLock.lock(); seconds = time(NULL); timeData = localtime(&seconds); //set_time(mktime(timeData)); strftime(fileDate, 30, "sd/log_%d_%m_%y.csv", timeData); timeLock.unlock(); fp = fopen(fileDate,"a"); //issue if file already open? if (fp == NULL) { /* printlock.lock(); pc->printf("WARNING: FILE COULD NOT BE OPENED\r\n\n"); sd_init = false; printlock.unlock(); */ printQueue.call(printf,"WARNING: FILE COULD NOT BE OPENED\r\n\n"); sd_init = false; samplesInBuffer.release(); } else { fprintf(fp,"%s,%5.2f,%5.2f,%5.2f\r", timedata, temp, pressure, light); fclose(fp); } if(logging) { /* printlock.lock(); pc->printf("Log file %s updated with sample from position %d in buffer\r\n",fileDate,oldestIndex); pc->printf("newestIndex position %d\r\n",newestIndex); pc->printf("oldestIndex position %d\r\n\n",oldestIndex); printlock.unlock(); */ //printQueue.call(printf,"Log file %s updated with sample from position %d in buffer\r\nnewestIndex position %d\r\noldestIndex position %d\r\n\n", fileDate, buffind, newestIndex, oldestIndex); printQueue.call(printf,"Log file updated with sample from position %d in buffer\r\nnewestIndex position %d\r\noldestIndex position %d\r\n\n", buffind, newestIndex, oldestIndex); } } else samplesInBuffer.release(); } /* void SDaddSample(void) { static time_t seconds; char fileDate[30]; timeLock.lock(); seconds = time(NULL); timeData = localtime(&seconds); //set_time(mktime(timeData)); strftime(fileDate, 30, "sd/log_%d_%m_%y.csv", timeData); timeLock.unlock(); fp = fopen(fileDate,"a"); //issue if file already open? bufferLock.lock(); if (fp == NULL) { printlock.lock(); pc->printf("WARNING: FILE COULD NOT BE OPENED\r\n\n"); sd_init = false; printlock.unlock(); samplesInBuffer.release(); } else { //oldestIndex = (oldestIndex+1) % BUFFERSIZE; fprintf(fp,"%s,%5.2f,%5.2f,%5.2f\r", buffer[oldestIndex].getTime(), buffer[oldestIndex].gettemp(), buffer[oldestIndex].getpress(), buffer[oldestIndex].getlight()); } if(logging) { printlock.lock(); pc->printf("Log file %s updated with sample from position %d in buffer\r\n",fileDate,oldestIndex); pc->printf("newestIndex position %d\r\n",newestIndex); pc->printf("oldestIndex position %d\r\n\n",oldestIndex); printlock.unlock(); } fclose(fp); bufferLock.unlock(); } */ //UNUSED /* void SDalive(void) { //Signal that the SD thread is still alive //puts("SD THREAD ALIVE\n"); } */ void SDmount(void) { //while(true) //{ //Thread::signal_wait(SIGNAL_SD); SD_tout.attach(SD_toutISR,TOUT_TIME_SDMOUNT); if (sd_init) { fclose(fp); sd.deinit(); sd_init = false; /* printlock.lock(); pc->printf("SD CARD UNMOUNTED\n\r"); printlock.unlock(); */ printQueue.call(printf,"SD CARD UNMOUNTED\n\r"); //LCDlock.lock(); //lcd.cls(); //lcd.printf("SD UNMOUNTED.."); //LCDqueue.call(LCD_text,"SD UNMOUNTED.."); //Thread::wait(5000); //Dont like this //for(int i=0;i<20;i++) //{ // greenLED = 1; //wait(0.5); //greenLED = 0; //wait(0.5); //} //LCDlock.unlock(); LCDqueue.call(LCD_sdcardmount,"SD UNMOUNTED..", 0.05); } else { SDcard(); //LCDlock.lock(); //lcd.cls(); if (sd_init) { //lcd.printf("SD MOUNTED.."); //LCDqueue.call(LCD_text,"SD MOUNTED.."); LCDqueue.call(LCD_sdcardmount,"SD MOUNTED..", 0.05); } else { //lcd.printf("SD FAILED.."); LCDqueue.call(LCD_sdcardmount,"SD FAILED..", 0.05); //pass in LED to flash RED } /* for(int i=0;i<20;i++) { greenLED = 1; wait(0.5); greenLED = 0; wait(0.5); } */ //Thread::wait(5000); //Dont like this //LCDlock.unlock(); } SD_tout.detach(); //} }