1. Introduction
FOTA is keeping an important role now a day. It helps to update the Firmware without recalling the product, especially in automotive where recalling costs millions to billions of USD.
The demo with old firmware will blink the Red Led. The new firmware will blink the Blue Led.
This demo is setup as below:
STM32 Firmwares include:
STM32 Flash layout for this demo:
2. Hardware
1 ESP32 Dev module
The connection between CAN transceiver and ESP32: ESP32 CAN
The connection between CAN transceiver and STM32:
- PB8 x CRX
- PB9 x CTX
3. Software
STM32 Flowchart:
ESP32 Flowchart:
The format of SW Info file (NSW.txt): version;url (Example: 1.3;http://192.168.1.3:8000/App1.bin)
The FW file (.bin) and NSW.txt are put under a directory and a Python3 Simple HTTP is used. Under the SW directory open the Terminal and run the command: python3 -m http.server
The source code is updated here:
https://github.com/nhatuan84/Firmware-Update-Over-The-Air-FOTA-for-ECU-STM32-via-ESP32-
4. Result
 for ECU (STM32) via ESP32 (HTTP - CAN protocols)){kind=link}
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