Complete guide how to build ota firmware to be used with yaota8266 script.
Clone this repository:
git clone https://github.com/nenadfilipovic/esp8266-micropython-ota
I assume you have built your esp-open-sdk and you know how to compile MicroPython firmware.
ESP8266 / ESP32 board and Linux operating system.
Download yaota8266 repository and extract to esp8266ota folder.
https://github.com/pfalcon/yaota8266
Download axtls repository and extract to esp8266ota/yaota8266/ota_server/lib/axtls.
https://github.com/pfalcon/axtls/tree/3c6b62b718427c03c345ee15be9bb66959a34ccd
Generate your keys in ota_client folder:
.gen_keys.sh
python -c "import rsa_sign; rsa_sign.dump_c(rsa_sign.load_key())"
Terminal will show you some values and you need mod value.
You need to keep priv.key and pub.key in same location as your ota_client.py or else it wont be able to authenticate and ota will fail.
Copy mod value to modulus field in config.h.example and rename file to config.h.
Prepare new sdk and check for updates, change folder to esp-open-sdk and run:
make clean
git pull
git submodule sync
git submodule update
Copy etshal.h and boot8266.ld from patch folder to your boot8266 folder and replace old file.
Copy ota.ld from patch folder to your ota_server folder and replace old file.
From root of yaota8266 folder run:
make
In root folder yaota8266.bin will be created, save it somewhere.
Go to micropython/port/esp8266 folder and run:
make ota
In build folder firmware-ota.bin will be created, put it next to yaota8266.bin.
Using esptool flash ota server and ota firmware with these commands:
esptool.py --port your-port --baud 230400 write_flash -fm dio --flash_size=detect 0x0 yaota8266.bin
esptool.py --port your-port --baud 230400 write_flash -fm dio --flash_size=detect 0x3c000 firmware-ota.bin
To flash firmware by ota, restart esp8266 board and in next 3 seconds press flash button to enter ota mode. Connect board to internet and get its ip address.
On PC run:
ota_client.py -a [address] live-ota [firmware.name]
Example:
python ota_client.py -a 196.182.12.10 live-ota myfirmware.bin
In terminal you will see send and receive requests and hopefully you will see done message at the end.
I have included yaota8266.bin and firmware-ota.bin and keys that work with those images. You can try to test.
- Nenad Filipovic - Initial work - nenadfilipovic
This project is licensed under the MIT License - see the LICENSE file for details.