65 lines
2.1 KiB
Markdown
65 lines
2.1 KiB
Markdown
# badgemagic-firmware
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Hardware details and information to build an open firmware for Bluetooth LED badges, compatible with [Badge Magic app](https://github.com/fossasia/badge-magic-android)
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## Hardware Information
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BadgeMagic target hardware features a custom 11x44 LED matrix display,
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Bluetooth LE and low power consumption.
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### Chipset
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The design relies on a single MCU.
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MCU type has changed depending on manufacturer batches.
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* ARM M0 variant based on [MM32L062PF](http://www.mindmotion.com.cn/en/download.aspx?cid=2564)
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* ARM M0 variant based on [MM32W062](http://www.mindmotion.com.cn/en/download.aspx?cid=2564)
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* RISC-V variant based on [CH582](https://www.wch.cn/products/CH583.html)
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See specific pages regarding each version of the hardware below
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### Display
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The custom 11x44 LED dot matrix displays using persistence of vision.
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Bitmaps are drawn using all the pins (11) vertically, resulting in a single diagonal scanline with high refresh rate.
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## Firmware
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Manufacturer firmware is closed source. Creating an open source compatible firmware is the goal of this project.
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### Functionalities
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The badge stores bitmaps with preconfigured animation sequences.
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It uses 8 memory banks that can be used alternatively.
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The 2 buttons configuration:
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* Top button
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* Switches device on or off (long press)
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* Changes to Bluetooth upload mode (short press when on)
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* Bottom button
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* Switches to badge display instead of charging screen when plugged with USB
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* Switches memory bank when displayed
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* Changes brightness level (long press)
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### Upload Protocol
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Sorry, you'll have to dive into code here :/
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See original [led-name-badge-ls32](https://github.com/fossasia/led-name-badge-ls32) for USB update protocol reverse engineering
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See [Badge Magic app](https://github.com/fossasia/badge-magic-android) for Bluetooth update protocol
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## Variant Specific Instructions
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Currently, only the RISC-V version is targeted as it seems the only one produced at the moment.
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### RISC-V CH582 Instructions
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Please go to [CH582 Badge Instructions and Reverse Engineering](CH582.md)
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