LoRaWAN-Signal-Mapping/iot/main/storage.cpp
Starbeamrainbowlabs c7012c621d Persist the frame counters in EEPROM
....but we don't initialise it to a value if it hasn't been written to 
yet.
2019-07-02 12:58:55 +01:00

59 lines
1.6 KiB
C++

#include <Arduino.h>
#include <SdFat.h>
#include <EEPROM.h>
// #include <ArduinoFiles.h>
#include "settings.h"
#include "gps.h"
// FUTURE: We might be able to trim it down if we disable long filenames with #define
SdFat store_init() {
SdFat card;
if(!card.begin(PIN_SPI_CS_SD)) {
Serial.println("Error: MicroSD card init failed");
while(true) delay(100);
}
return card;
}
void store_reading(uint32_t id, GPSLocation location) {
// Port the rest of this to SdFat from SD
SdFat card = store_init();
// Open the file to write the data to. If it doesn't exist it will be created.
// 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.
File handle = card.open(SD_FILENAME, O_APPEND | O_CREAT | O_WRONLY);
uint8_t places = 6;
handle.printField(id, '\t');
handle.printField(location.lat, '\t', places);
handle.printField(location.lng, '\n', places);
handle.close(); // Syncs implicitly
}
void store_debug(char* buffer, int size) {
SdFat card = store_init();
File handle = card.open(SD_FILENAME_DEBUG, O_APPEND | O_CREAT | O_WRONLY);
handle.write(buffer, size);
handle.write('\n');
handle.close();
}
/*
void store_end() {
// Apparently we're fine so long as we don't have any open file handles - there's no end() method on the SdFat class
// card->end();
delete card;
card = nullptr;
}
*/
void store_eeprom_uint32_save(uint8_t offset, uint32_t value) {
EEPROM.put(offset, value);
}
uint32_t store_eeprom_uint32_retrieve(uint8_t offset) {
uint32_t result;
EEPROM.get(offset, result);
return result;
}