https://github.com/bjoernQ/esp32c3-ota-experiment

ESP32-C3 Bare Metal OTA Experiment
https://github.com/bjoernQ/esp32c3-ota-experiment

Last synced: 25 days ago
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ESP32-C3 Bare Metal OTA Experiment

• Host: GitHub
• URL: https://github.com/bjoernQ/esp32c3-ota-experiment
• Owner: bjoernQ
• License: apache-2.0
• Created: 2022-06-01T07:54:40.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2023-07-20T13:49:43.000Z (12 months ago)
• Last Synced: 2024-02-24T22:37:53.530Z (4 months ago)
• Language: Rust
• Size: 81.1 KB
• Stars: 29
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHE

Lists

• awesome-esp-rust - esp32c3-ota-experiment - ESP32-C3 Bare Metal OTA Experiment. (Projects / `no_std`)

README

        
# ESP32C3 Bare Metal OTA Experiment

## About

This is an experiment to do an OTA update on ESP32-C3 in bare-metal.

Most things are hard-coded (i.e. the adresses of the ota partition and the ota slots).

## Preparation

First set the ENV variables `SSID` and `PASSWORD` to match the settings of your WiFi access point.

Your PC needs to be connected to the same access point.

Set the address of your computer in as ENV variable `HOST_IP`(e.g. "192.168.2.125")

Make sure you have installed [devserver](https://crates.io/crates/devserver)

Change `THIS_VERSION` in `main.rs` to `2`. Compile the application via `cargo build --release`.

Perform these steps

- `esptool --chip esp32c3 elf2image target\riscv32imac-unknown-none-elf\release\esp32c3_ota_experiment`

- `cp target\riscv32imac-unknown-none-elf\release\esp32c3_ota_experiment.bin firmware.bin`

Change `THIS_VERSION` in `main.rs` back to `1`.

## Run

Run `devserver --address 192.168.2.125:8080` in a separate terminal (in the project directory). Make sure to replace `192.168.2.125` by the IP of your PC.

To avoid problems run `esptool erase_flash` first. Now run the application via `cargo run --release`

The application should connect to your PC, pick up `current.txt` and see it's own version (1) is below what is available online (2).

Now it will download `firmware.bin` and flash it. After that it will set the OTA partition to use.

In this experiment the reset isn't done automatically. Reset the ESP32-C3 and see the new version boot.

The new version will see there is no later version online to flash.

## Please Note

Make sure to use the provided bootloader and partition table.

i.e. when flashing manually with espflash use `espflash --bootloader bootloader.bin --partition-table partitions.csv`