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esp32_gps-ntp-server's Introduction

Title:       ESP32 GPS Based NTP Server
Author:      Jeremy Speer, [email protected]
Date:        May 10, 2022
Hardware:    Lilygo TTGO ESP32 T-Display,
             u-Blox GNSS Breakout
Software:    VSCode, PlatformIO
             Using bleeding edge of platform-espressif32 and framework-arduinoespressif32
Libraries:   TFT_eSPI, SparkFun u-blox GNSS

Description: An ESP32 based NTP server with time synchronized by GPS

uBlox M9N is connected via I2C
See /data/config.json (default is pins 21/22).

To replace uBlox with another sensor, replace lib/UBLOX_GPS (see current implementation)
and update platformio.ini and include/main.h to reflect new library and constructor.

IoT_iconset_16x16 from engsta.net (no copyright noted)

To use a different display or ESP32 board, review platformio.ini and include/main.h

Config: Configuration is stored in /data/config.json

After first build and after every change of config.json, run "Build Filesystem
Image" then run "Upload Filesystem Image".

Hostname is for mDNS, so the top level domain is automatically set to .local
Example: if hostname is set to ESP32-NTP, mDNS hostname is ESP32-NTP.local

Legal

Released under CC0 1.0 Universal
https://creativecommons.org/publicdomain/zero/1.0/legalcode

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