2024-10-02 11:26:05 +00:00
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# Alert-Me Display
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A simple application for an
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[nRF52840](https://www.nordicsemi.com/Products/nRF52840) microcontroller using
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[embassy](https://embassy.dev/).
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2024-11-16 15:55:15 +00:00
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It shows information received with BLE on a
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[HD44780 LCD like](https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller)
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screen.
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2024-10-02 11:26:05 +00:00
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This is a learning environment, not a finished product.
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# Development
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## Nix
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If using the nix way as described in the [top-level readme](../README.md), no
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further dependencies need to be installed.
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## Manual Way
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In addition to the [top-level readme](../README.md) dependencies, the following
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has to be installed:
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- [probe-rs](https://probe.rs/docs/getting-started/installation/)
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## Softdevice
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2024-05-20 09:18:17 +00:00
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The softdevice blob is not distributed with this repository for licensing
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2024-10-02 11:26:05 +00:00
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reasons (even though my understanding is that it is possible).
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2024-05-20 09:18:17 +00:00
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Download the
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[S140 Softdevice](https://www.nordicsemi.com/Products/Development-software/s140/download)
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and flash it to your chip.
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_Example command to flash the softdevice_
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```
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probe-rs download --verify --format hex --chip nRF52840_xxAA ./s140_nrf52_7.3.0_softdevice.hex
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```
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2024-10-02 11:26:05 +00:00
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## Running
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2024-10-02 13:25:49 +00:00
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Verify that the microcontroller is recognized by running `probe-rs list`.
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2024-10-02 11:26:05 +00:00
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A simple `cargo run` will then connect to it and upload the code. Logging output
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should be visible.
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