Added MCU support for ArteryTek AT32F415 (#23445)
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@ -345,6 +345,39 @@ Flashing sequence:
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3. Flash a .bin file
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4. Reset the device into application mode (may be done automatically)
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## AT32 DFU
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All AT32 MCUs come preloaded with a factory bootloader that cannot be modified nor deleted.
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To ensure compatibility with the AT32-DFU bootloader, make sure this block is present in your `rules.mk`:
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```make
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# Bootloader selection
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BOOTLOADER = at32-dfu
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```
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Compatible flashers:
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* [dfu-util](https://dfu-util.sourceforge.net/) / `:dfu-util` target in QMK (recommended command line)
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```
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dfu-util -a 0 -d 2E3C:DF11 -s 0x8000000:leave -D <filename>
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```
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Flashing sequence:
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1. Enter the bootloader using any of the following methods:
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* Tap the `QK_BOOT` keycode
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* If a reset circuit is present, tap the `RESET` button on the PCB; some boards may also have a toggle switch that must be flipped
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* Otherwise, you need to bridge `BOOT0` to VCC (via `BOOT0` button or jumper), short `RESET` to GND (via `RESET` button or jumper), and then let go of the `BOOT0` bridge
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2. Wait for the OS to detect the device
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3. Flash a .bin file
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4. Reset the device into application mode (may be done automatically)
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### `make` Targets
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* `:dfu-util`: Waits until an AT32 bootloader device is available, and then flashes the firmware.
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* `:dfu-util-split-left` and `:dfu-util-split-right`: Flashes the firmware as with `:dfu-util`, but also sets the handedness setting in EEPROM.
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## tinyuf2
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Keyboards may opt into supporting the tinyuf2 bootloader. This is currently only supported on F303/F401/F411.
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