There are quite a few different types of bootloaders that keyboards use, and just about all of the use a different flashing method. Luckily, projects like the [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) aim to be compatible with all the different types without having to think about it much, but this article will describe the different types of bootloaders, and available methods for flashing them.
-If you have a bootloader selected with the `BOOTLOADER` variable in your `rules.mk`, QMK will automatically calculate if your .hex file is the right size to be flashed to the device, and output the total size it bytes (along with the max). To run this process manually, compile with the target `check-size`, eg `make planck/rev4:default:check-size`.
+If you have a bootloader selected with the `BOOTLOADER` variable in your `rules.mk`, QMK will automatically calculate if your .hex file is the right size to be flashed to the device, and output the total size in bytes (along with the max). To run this process manually, compile with the target `check-size`, eg `make planck/rev4:default:check-size`.
## DFU
To ensure compatibility with the DFU bootloader, make sure this block is present your `rules.mk` (optionally with `lufa-dfu` or `qmk-dfu` instead):
- # Bootloader
- # This definition is optional, and if your keyboard supports multiple bootloaders of
- # different sizes, comment this out, and the correct address will be loaded
- # automatically (+60). See bootloader.mk for all options.
- BOOTLOADER = atmel-dfu
+```make
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = atmel-dfu
+```
Compatible flashers:
* [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) (recommended GUI)
* [dfu-programmer](https://github.com/dfu-programmer/dfu-programmer) / `:dfu` in QMK (recommended command line)
-* [Atmel's Flip](http://www.atmel.com/tools/flip.aspx) (not recommended)
+* [Atmel's Flip](http://www.microchip.com/developmenttools/productdetails.aspx?partno=flip) (not recommended)
Flashing sequence:
To generate a production-ready .hex file (containing the application and the bootloader), use the `production` target, eg `make planck/rev4:default:production`.
+### DFU commands
+
+There are a number of DFU commands that you can use to flash firmware to a DFU device:
+
+* `:dfu` - This is the normal option and waits until a DFU device is available, and then flashes the firmware. This will check every 5 seconds, to see if a DFU device has appeared.
+* `:dfu-ee` - This flashes an `eep` file instead of the normal hex. This is uncommon.
+* `:dfu-split-left` - This flashes the normal firmware, just like the default option (`:dfu`). However, this also flashes the "Left Side" EEPROM file for split keyboards. _This is ideal for Elite C based split keyboards._
+* `:dfu-split-right` - This flashes the normal firmware, just like the default option (`:dfu`). However, this also flashes the "Right Side" EEPROM file for split keyboards. _This is ideal for Elite C based split keyboards._
+
## Caterina
-Arduino boards and their clones use the [Caterina bootloader](https://github.com/arduino/Arduino/tree/master/hardware/arduino/avr/bootloaders/caterina) (any keyboard built with a Pro Micro, or clone), and uses the avr109 protocol to communicate through virtual serial. Bootloaders like [A-Star](https://www.pololu.com/docs/0J61/9) are based on Caterina.
+Arduino boards and their clones use the [Caterina bootloader](https://github.com/arduino/ArduinoCore-avr/tree/master/bootloaders/caterina) (any keyboard built with a Pro Micro, or clone), and uses the avr109 protocol to communicate through virtual serial. Bootloaders like [A-Star](https://www.pololu.com/docs/0J61/9) are based on Caterina.
To ensure compatibility with the Caterina bootloader, make sure this block is present your `rules.mk`:
- # Bootloader
- # This definition is optional, and if your keyboard supports multiple bootloaders of
- # different sizes, comment this out, and the correct address will be loaded
- # automatically (+60). See bootloader.mk for all options.
- BOOTLOADER = caterina
+```make
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = caterina
+```
Compatible flashers:
1. Press the `RESET` keycode, or short RST to GND quickly (you only have 7 seconds to flash once it enters)
2. Wait for the OS to detect the device
-4. Flash a .hex file
-5. Wait for the device to reset automatically
+3. Flash a .hex file
+4. Wait for the device to reset automatically
or
make <keyboard>:<keymap>:avrdude
+
+#### Caterina commands
+
+There are a number of DFU commands that you can use to flash firmware to a DFU device:
+
+* `:avrdude` - This is the normal option which waits until a Caterina device is available (by detecting a new COM port), and then flashes the firmware.
+* `:avrdude-loop` - This runs the same command as `:avrdude`, but after each device is flashed, it will attempt to flash again. This is useful for bulk flashing. _This requires you to manually escape the loop by hitting Ctrl+C._
+* `:avrdude-split-left` - This flashes the normal firmware, just like the default option (`:avrdude`). However, this also flashes the "Left Side" EEPROM file for split keyboards. _This is ideal for Pro Micro based split keyboards._
+* `:avrdude-split-right` - This flashes the normal firmware, just like the default option (`:avrdude`). However, this also flashes the "Right Side" EEPROM file for split keyboards. _This is ideal for Pro Micro based split keyboards._
+
+
+
## Halfkay
Halfkay is a super-slim protocol developed by PJRC that uses HID, and come on all Teensys (namely the 2.0).
To ensure compatibility with the Halfkay bootloader, make sure this block is present your `rules.mk`:
- # Bootloader
- # This definition is optional, and if your keyboard supports multiple bootloaders of
- # different sizes, comment this out, and the correct address will be loaded
- # automatically (+60). See bootloader.mk for all options.
- BOOTLOADER = halfkay
+```make
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = halfkay
+```
Compatible flashers:
1. Press the `RESET` keycode, or short RST to GND quickly (you only have 7 seconds to flash once it enters)
2. Wait for the OS to detect the device
-4. Flash a .hex file
-5. Reset the device into application mode (may be done automatically)
+3. Flash a .hex file
+4. Reset the device into application mode (may be done automatically)
+
+## USBasploader
+
+USBasploader is a bootloader developed by matrixstorm. It is used in some non-USB AVR chips such as the ATmega328P, which run V-USB.
+
+To ensure compatibility with the USBasploader bootloader, make sure this block is present in your `rules.mk`:
+
+```make
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = USBasp
+```
+
+Compatible flashers:
+
+* [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) (recommended GUI)
+* [avrdude](http://www.nongnu.org/avrdude/) with the `usbasp` programmer
+* [AVRDUDESS](https://github.com/zkemble/AVRDUDESS)
+
+Flashing sequence:
+
+1. Press the `RESET` keycode, or keep the boot pin shorted to GND while quickly shorting RST to GND
+2. Wait for the OS to detect the device
+3. Flash a .hex file
+4. Reset the device into application mode (may be done automatically)
+
+## BootloadHID
+
+BootloadHID is a USB bootloader for AVR microcontrollers. The uploader tool requires no kernel level driver on Windows and can therefore be run without installing any DLLs.
+
+To ensure compatibility with the bootloadHID bootloader, make sure this block is present your `rules.mk`:
+
+```make
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = bootloadHID
+```
+
+Compatible flashers:
+
+* [HIDBootFlash](http://vusb.wikidot.com/project:hidbootflash) (recommended Windows GUI)
+* [bootloadhid Command Line](https://www.obdev.at/products/vusb/bootloadhid.html) / `:BootloadHID` in QMK (recommended command line)
+
+Flashing sequence:
+
+1. Enter the bootloader using any of the following methods:
+ * Tap the `RESET` keycode (may not work on all devices)
+ * Hold the salt key while plugging the keyboard in (usually documented within keyboard readme)
+2. Wait for the OS to detect the device
+3. Flash a .hex file
+4. Reset the device into application mode (may be done automatically)
+
+or:
+
+ make <keyboard>:<keymap>:bootloadHID
+
+## STM32
+
+All STM32 chips come preloaded with a factory bootloader that cannot be modified nor deleted. Some STM32 chips have bootloaders that do not come with USB programming (e.g. STM32F103) but the process is still the same.
+
+At the moment, no `BOOTLOADER` variable is needed on `rules.mk` for STM32.
+
+Compatible flashers:
+
+* [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) (recommended GUI)
+* [dfu-util](https://github.com/Stefan-Schmidt/dfu-util) / `:dfu-util` (recommended command line)
+
+Flashing sequence:
+
+1. Enter the bootloader using any of the following methods:
+ * Tap the `RESET` keycode (may not work on STM32F042 devices)
+ * If a reset circuit is present, tap the RESET button
+ * Otherwise, you need to bridge BOOT0 to VCC (via BOOT0 button or bridge), short RESET to GND (via RESET button or bridge), and then let go of the BOOT0 bridge
+2. Wait for the OS to detect the device
+3. Flash a .bin file
+ * You will receive a warning about the DFU signature; Just ignore it
+4. Reset the device into application mode (may be done automatically)
+ * If you are building from command line (e.g. `make planck/rev6:default:dfu-util`), make sure that `:leave` is passed to the `DFU_ARGS` variable inside your `rules.mk` (e.g. `DFU_ARGS = -d 0483:df11 -a 0 -s 0x08000000:leave`) so that your device resets after flashing
+
+### STM32 Commands
+
+There are a number of DFU commands that you can use to flash firmware to a STM32 device:
+
+* `:dfu-util` - The default command for flashing to STM32 devices, and will wait until an STM32 bootloader device is present.
+* `:dfu-util-split-left` - This flashes the normal firmware, just like the default option (`:dfu-util`). However, this also configures the "Left Side" EEPROM setting for split keyboards.
+* `:dfu-util-split-right` - This flashes the normal firmware, just like the default option (`:dfu-util`). However, this also configures the "Right Side" EEPROM setting for split keyboards.
+* `:st-link-cli` - This allows you to flash the firmware via ST-LINK's CLI utility, rather than dfu-util.
projects / qmk_firmware.git / blobdiff