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70 lines
4.3 KiB
Markdown
70 lines
4.3 KiB
Markdown
# Frequently Asked Build Questions
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This page covers questions about building QMK. If you haven't yet done so, you should read the [Build Environment Setup](newbs_getting_started) and [Make Instructions](getting_started_make_guide) guides.
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## Can't Program on Linux
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You will need proper permissions to operate a device. For Linux users, see the instructions regarding `udev` rules, below. If you have issues with `udev`, a work-around is to use the `sudo` command. If you are not familiar with this command, check its manual with `man sudo` or [see this webpage](https://linux.die.net/man/8/sudo).
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An example of using `sudo`, when your controller is ATMega32u4:
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$ sudo dfu-programmer atmega32u4 erase --force
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$ sudo dfu-programmer atmega32u4 flash your.hex
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$ sudo dfu-programmer atmega32u4 reset
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or just:
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$ sudo make <keyboard>:<keymap>:flash
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Note that running `make` with `sudo` is generally ***not*** a good idea, and you should use one of the former methods, if possible.
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### Linux `udev` Rules {#linux-udev-rules}
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On Linux, you'll need proper privileges to communicate with the bootloader device. You can either use `sudo` when flashing firmware (not recommended), or place [this file](https://github.com/qmk/qmk_firmware/tree/master/util/udev/50-qmk.rules) into `/etc/udev/rules.d/`.
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Once added, run the following:
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```
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sudo udevadm control --reload-rules
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sudo udevadm trigger
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```
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**Note:** With older versions of ModemManager (< 1.12), filtering only works when not in strict mode. The following commands can update that setting:
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```
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printf '[Service]\nExecStart=\nExecStart=/usr/sbin/ModemManager --filter-policy=default' | sudo tee /etc/systemd/system/ModemManager.service.d/policy.conf
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sudo systemctl daemon-reload
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sudo systemctl restart ModemManager
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```
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### Serial device is not detected in bootloader mode on Linux
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Make sure your kernel has appropriate support for your device. If your device uses USB ACM, such as
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Pro Micro (Atmega32u4), make sure to include `CONFIG_USB_ACM=y`. Other devices may require `USB_SERIAL` and any of its sub options.
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## Unknown Device for DFU Bootloader
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Issues encountered when flashing keyboards on Windows are most often due to having the wrong drivers installed for the bootloader, or none at all.
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Re-running the QMK installation script (`./util/qmk_install.sh` from the `qmk_firmware` directory in MSYS2 or WSL) or reinstalling the QMK Toolbox may fix the issue. Alternatively, you can download and run the [`qmk_driver_installer`](https://github.com/qmk/qmk_driver_installer) package manually.
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If that doesn't work, then you may need to download and run Zadig. See [Bootloader Driver Installation with Zadig](driver_installation_zadig) for more detailed information.
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## USB VID and PID
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You can use any ID you want with editing `config.h`. Using any presumably unused ID will be no problem in fact except for very low chance of collision with other product.
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Most boards in QMK use `0xFEED` as the vendor ID. You should look through other keyboards to make sure you pick a unique Product ID.
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Also see this.
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https://github.com/tmk/tmk_keyboard/issues/150
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You can buy a really unique VID:PID here. I don't think you need this for personal use.
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- https://www.obdev.at/products/vusb/license.html
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- https://www.mcselec.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=92&option=com_phpshop&Itemid=1
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### I just flashed my keyboard and it does nothing/keypresses don't register - it's also ARM (rev6 planck, clueboard 60, hs60v2, etc...) (Feb 2019)
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Due to how EEPROM works on ARM based chips, saved settings may no longer be valid. This affects the default layers, and *may*, under certain circumstances we are still figuring out, make the keyboard unusable. Resetting the EEPROM will correct this.
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[Planck rev6 reset EEPROM](https://cdn.discordapp.com/attachments/473506116718952450/539284620861243409/planck_rev6_default.bin) can be used to force an eeprom reset. After flashing this image, flash your normal firmware again which should restore your keyboard to _normal_ working order.
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[Preonic rev3 reset EEPROM](https://cdn.discordapp.com/attachments/473506116718952450/537849497313738762/preonic_rev3_default.bin)
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If bootmagic is enabled in any form, you should be able to do this too (see [Bootmagic docs](features/bootmagic) and keyboard info for specifics on how to do this).
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