IMPORTANT NOTICE: please use this sketch with caution, it may (worst case) render your T-Beam and/or the u-Blox GPS unusable!

LilyGo-T-Beam-GPS-Reset

Arduino sketch to reset the u-blox M6/M7/M8 GPS on a LilyGo T-Beam v1.0 and v1.1 version to:

• GPS_BAUD_RATE 9600
• GPS_UPDATE_RATE 1

Works with T-BEAM v1.0 and v1.1 versions

• if you need to configure a T-Beam v0.7 version, please change the define in utilities.h accordingly

Requirements:

• install Arduino IDE (v1.8 or later) and add https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json into the Additional Board Manager URLs
• open the Arduino Boards Manager, search and install esp32 by Espressif Systems
• if you have Arduino IDE already installed, it is recommended to delete the ~/Documents/Arduino/libraries folder to avoid using conflicting libraries
• open the Arduino Library Manager, search and install SparkFun u-blox Arduino Library (only use deprecated version v1.8.11, do not use v2.x)
• open the Arduino Library Manager, search and install AXP202X_Library

Prepare:

• download or clone https://github.com/VirusPilot/LilyGo-T-Beam-GPS-Reset
• copy LilyGo-T-Beam-GPS-Reset folder to ~/Documents/Arduino/LilyGo-T-Beam-GPS-Reset

Compile:

• open LilyGo-T-Beam-GPS-Reset.ino sketch from File -> Open menu
• Select Tools -> Board -> ESP32 Dev Module
• Select Tools -> Upload Speed -> 921600
• Select Tools -> CPU Frequency -> 80MHz
• Select Tools -> Flash Frequency -> 80MHz
• Select Tools -> Flash Mode -> DIO
• Select Tools -> Flash Size -> 4MB
• Select Tools -> Partition Scheme -> Minimal SPIFFS
• Select Tools -> PSRAM -> Enabled
• Select Tools -> open serial monitor @ 115200 baud
• connect your T-Beam
• Select Tools -> Port -> (select accodingly)
• you should see some output on the serial monitor, e.g. NMEA sentences
• compile/upload
• after the automatic reboot you should see GPS NMEA sentences