My LoRaWAN Signal Mapping MSc summer project.
This is a copy of the actual repository with personal information removed.
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48 lines
1.4 KiB
48 lines
1.4 KiB
#include <Arduino.h>
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#include <SdFat.h>
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// #include <ArduinoFiles.h>
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#include "settings.h"
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#include "gps.h"
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// FUTURE: We might be able to trim it down if we disable long filenames with #define USE_LONG_FILE_NAMES 0
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SdFat* card = nullptr;
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void store_init() {
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card = new SdFat();
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if(!card->begin(PIN_SPI_CS_SD)) {
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Serial.println("Error: MicroSD card init failed");
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while(true) delay(100);
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}
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}
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void store_reading(uint32_t id, GPSLocation location) {
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// Port the rest of this to SdFat from SD
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// Open the file to write the data to. If it doesn't exist it will be created.
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// Unlike elsewhere, FILE_WRITE opens the file with the cursor starting at the end, so it's basically actually equivalent to FILE_APPEND that we use in other environments. Confusing, I know.
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File handle = card->open(SD_FILENAME, O_APPEND | O_CREAT | O_WRONLY);
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char line[33];
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int chars = snprintf(line, 33, "%d\t%06d\t%06d\n",
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id,
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location.lat, location.lng
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);
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handle.write(line, chars);
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handle.close(); // Syncs implicitly
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}
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void store_debug(char* buffer, int size) {
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File handle = card->open(SD_FILENAME_DEBUG, O_APPEND | O_CREAT | O_WRONLY);
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handle.write(buffer, size);
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handle.write('\n');
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handle.close();
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}
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void store_end() {
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// Apparently we'ree fine so long as we don't have any open file handles - there's no end() method on the SdFat class
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// card->end();
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delete card;
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card = nullptr;
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}
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