Logging GPS data to a SD card. Additional button press stores current location in a separate file as a point of interest (POI). GPS data is stored as a NMEA sentence.

Component	Purpose
ESP32 - Wroom32	Main controller. Reads GPS data from UART and writes the position to a SD card. Handles button pushes to store additional POIs.
GPS NEO-7M-C	GPS device
SD card read/write SPI module	Writes position to a SD card.
Momentary button with LED	Button when pressed initiates saving the current position to the SD card. Button contains a LED ring which is used to display the status of the system.

TBD: Fritzing

Pins used on the ESP32 - Wroom32

name, pin on board, pin in main.cpp

Thirdparty Libraries

Name	Purpose	URL
SdFat	Arduino FAT16/FAT32 Library	https://github.com/greiman/SdFat
EasyButton	Arduino library for debouncing momentary contact switches	https://github.com/evert-arias/EasyButton
MicroNMEA	A compact Arduino library to parse NMEA sentences	https://github.com/stevemarple/MicroNMEA

Decoding stack trace after crash

https://github.com/littleyoda/EspStackTraceDecoder

java -jar EspStackTraceDecoder.jar C:\Users\<USER>\Documents\Arduino\hardware\espressif\esp32\tools\xtensa-esp32-elf\bin\xtensa-esp32-elf-addr2line.exe C:\Users\<USER>\Documents\GitHub\ESP32-GPS-Logger\.pio\build\nodemcu-32s\firmware.elf dump3.txt

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