67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
VA416xx Flashloader Application
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========
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This flashloader shows a minimal example for a self-updatable Rust software which exposes
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a simple PUS (CCSDS) interface to update the software. It also provides a Python application
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called the `image-loader.py` which can be used to upload compiled images to the flashloader
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application to write them to the NVM.
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Please note that the both the application and the image loader are tailored towards usage
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with the [bootloader provided by this repository](https://egit.irs.uni-stuttgart.de/rust/va416xx-rs/src/branch/main/bootloader).
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The software can quickly be adapted to interface with a real primary on-board software instead of
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the Python script provided here to upload images because it uses a low-level CCSDS based packet
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interface.
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## Using the Python image loader
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The Python image loader communicates with the Rust flashload application using a dedicated serial
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port with a baudrate of 115200.
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It is recommended to run the script in a dedicated virtual environment. For example, on UNIX
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systems you can use `python3 -m venv venv` and then `source venv/bin/activate` to create
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and activate a virtual environment.
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After that, you can use
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```sh
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pip install -r requirements.txt
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```
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to install all required dependencies.
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After that, it is recommended to use `./image-load.py -h` to get an overview of some options.
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The flash loader uses the UART0 interface of the VA416xx board to perform CCSDS based
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communication. The Python image loader application will search for a file named `loader.toml` and
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use the `serial_port` key to determine the serial port to use for serial communication.
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### Examples
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You can use
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```sh
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./image-loader.py -p
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```
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to send a ping an verify the connection.
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You can use
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```sh
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cd flashloader/slot-a-blinky
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cargo build --release
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cd ../..
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./image-loader.py -t a ./slot-a-blinky/target/thumbv7em-none-eabihf/release/slot-a-blinky
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```
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to build the slot A sample application and upload it to a running flash loader application
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to write it to slot A.
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You can use
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```sh
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./image-loader.py -c -t a
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```
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to corrupt the image A and test that it switches to image B after a failed CRC check instead.
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