esp8266-ota-flash-convert

Intermediate upgrade firmware for ESP8266 based Tuya devices to easily backup and replace stock firmware

Used for OTA flashing by https://github.com/ct-Open-Source/tuya-convert

It was based on https://github.com/khcnz/Espressif2Arduino

Setup

Method 1 - PlatformIO (recommended)

1. Install platformio

Method 2 - Arduino

1. Install Arduino 1.8.8
2. Go to Preferences and add to "Additional Boards Manager URLs" http://arduino.esp8266.com/stable/package_esp8266com_index.json
3. Go to "Board Manager" and search "esp"
4. Install esp8266 by ESP8266 Community version 2.3
5. Install linker scripts from this repository

cp files/boards.txt $ARDUINO_PATH/packages/esp8266/hardware/esp8266/2.3.0
cp files/*.ld $ARDUINO_PATH/packages/esp8266/hardware/esp8266/2.3.0/tools/sdk/ld

Building

Method 1 - PlatformIO (recommended)

2. Build and package

scripts/build-pio.sh

Method 2 - Arduino CLI

6. Edit $ARDUINO_PATH in scripts/build-arduino.sh to point to the arduino executable
7. Build and package

scripts/build-arduino.sh

Method 3 - Arduino IDE

6. Build esp8266-ota-flash-convert.ino using Flash Size "1M (Espressif OTA Rom 1)"
7. Convert to a version 2 binary

esptool.py elf2image --version 2 esp8266-ota-flash-convert.ino.elf

8. Build esp8266-ota-flash-convert.ino using Flash Size "1M (Espressif OTA Rom 2)"
9. Convert to a version 2 binary

esptool.py elf2image --version 2 esp8266-ota-flash-convert.ino.elf

10. Move binaries into build directory as user1.bin and user2.bin respectively
11. Package UPG

scripts/create_upg.py

Installing

1. Copy .bin files from build to the files directory under tuya-convert