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diff --git a/docs/flashing.md b/docs/flashing.md index b3f055f6cb..a636f19c72 100644 --- a/docs/flashing.md +++ b/docs/flashing.md @@ -363,6 +363,47 @@ CLI Flashing sequence: * `:uf2-split-left` and `:uf2-split-right`: Flashes the firmware but also sets the handedness setting in EEPROM by generating a side specific firmware. +## uf2boot + +Keyboards may opt into supporting the uf2boot bootloader. This is currently only supported on the F103 bluepill. + +The `rules.mk` setting for this bootloader is `uf2boot`, and can be specified at the keymap or user level. + +To ensure compatibility with the uf2boot bootloader, make sure this block is present in your `rules.mk`: + +```make +# Bootloader selection +BOOTLOADER = uf2boot +``` + +Compatible flashers: + +* Any application able to copy a file from one place to another, such as _macOS Finder_ or _Windows Explorer_. + +Flashing sequence: + +1. Enter the bootloader using any of the following methods: + * Tap the `QK_BOOT` keycode + * Double-tap the `nRST` button on the PCB. +2. Wait for the OS to detect the device +3. Copy the .uf2 file to the new USB disk +4. Wait for the keyboard to become available + +or + +CLI Flashing sequence: + +1. Enter the bootloader using any of the following methods: + * Tap the `QK_BOOT` keycode + * Double-tap the `nRST` button on the PCB. +2. Wait for the OS to detect the device +3. Flash via QMK CLI eg. `qmk flash --keyboard handwired/onekey/bluepill_uf2boot --keymap default` +4. Wait for the keyboard to become available + +### `make` Targets + +* `:uf2-split-left` and `:uf2-split-right`: Flashes the firmware but also sets the handedness setting in EEPROM by generating a side specific firmware. + ## Raspberry Pi RP2040 UF2 The `rules.mk` setting for this bootloader is `rp2040`, and can be specified at the keymap or user level. |