Firmware Installation
Download Firmware
The pre-compiled binary files can be found on the GitHub Releases Page (the right column on the projects start page). Currently there are pre-compiled binaries for ESP32 and ESP32-S3 MCUs.
Factory-Binaries
Important
When flashing OpenDTU-OnBattery onto the ESP32 for the first time, you need to flash it with the factory firmware binary file.
Binaries with .factory in their name include the firmware, the respective
partition table, as well as the bootloader. Use these files to flash an ESP32
for the first time and after erasing the flash (to start from scratch).
Overview of Firmware Variants
- All binary names start with
opendtu-onbattery-and include the respective PlatformIO (PIO) environment name. - Use the non-factory binaries to perform OTA updates.
| PIO Environmenti | MCU | Flash Size | Comment |
|---|---|---|---|
generic_esp32s3_usb[.factory].bin |
ESP32-S3 | ≥ 8 MB | For OpenDTU Fusion and ESP32-S3 boards with native USB connection. |
generic_esp32s3[.factory].bin |
ESP32-S3 | ≥ 8 MB | For boards that only have a USB-UART bridge to the ESP32-S3. |
generic_esp32_8mb[.factory].bin |
ESP32 | ≥ 8 MB | For ESP32 with at least 8 MB of flash. |
generic_esp32_4mb_no_ota.factory.bin |
ESP32 | 4 MB | For ESP32 with only 4 MB of flash, without support for OTA updates. |
generic_esp32[.factory].bin |
ESP32 | 4 MB | End of Life, do not use for new devices. |
generic[.factory].bin |
ESP32 | 4 MB | End of Life, previously deprecated, do not use for new devices. |
Note
All firmware variants require a Device Profile to be configured after installing the firmware.
Write Firmware to ESP32
Follow the instructions to write ESP32 flash memory.