Update split i2c docs for example of when pull-ups are required (#7143)

[qmk_firmware.git] / docs / faq_build.md

diff --git a/docs/faq_build.md b/docs/faq_build.md
index 7d17df0745240cf80bfcfeb612055472d455bc45..f11cb76aa2bddfaa7fab9ab7ac6733717d4458b5 100644 (file)
--- a/docs/faq_build.md
+++ b/docs/faq_build.md
@@ -15,11 +15,15 @@ or just:
 
     $ sudo make <keyboard>:<keymap>:dfu
 
-Note that running `make` with `sudo` is generally *not* a good idea, and you should use one of the former methods, if possible.
+Note that running `make` with `sudo` is generally ***not*** a good idea, and you should use one of the former methods, if possible.
 
-## Linux `udev` Rules
+### Linux `udev` Rules
 On Linux, you'll need proper privileges to access the MCU. You can either use
-`sudo` when flashing firmware, or place these files in `/etc/udev/rules.d/`.
+`sudo` when flashing firmware, or place these files in `/etc/udev/rules.d/`. Once added run the following:
+```console
+sudo udevadm control --reload-rules
+sudo udevadm trigger
+```
 
 **/etc/udev/rules.d/50-atmel-dfu.rules:**
 ```
@@ -36,6 +40,46 @@ SUBSYSTEMS=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2ff0", MODE:="066
 # tmk keyboard products     https://github.com/tmk/tmk_keyboard
 SUBSYSTEMS=="usb", ATTRS{idVendor}=="feed", MODE:="0666"
 ```
+**/etc/udev/rules.d/54-input-club-keyboard.rules:**
+
+```
+# Input Club keyboard bootloader
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1c11", MODE:="0666"
+```
+
+**/etc/udev/rules.d/55-catalina.rules:**
+```
+# ModemManager should ignore the following devices
+ATTRS{idVendor}=="2a03", ENV{ID_MM_DEVICE_IGNORE}="1"
+ATTRS{idVendor}=="2341", ENV{ID_MM_DEVICE_IGNORE}="1"
+```
+
+**Note:** ModemManager filtering only works when not in strict mode, the following commands can update that settings:
+```console
+sudo sed -i 's/--filter-policy=strict/--filter-policy=default/' /lib/systemd/system/ModemManager.service
+sudo systemctl daemon-reload
+sudo systemctl restart ModemManager
+```
+
+**/etc/udev/rules.d/56-dfu-util.rules:**
+```
+# stm32duino
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1eaf", ATTRS{idProduct}=="0003", MODE:="0666"
+# Generic stm32
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE:="0666"
+```
+
+### Serial device is not detected in bootloader mode on Linux
+Make sure your kernel has appropriate support for your device. If your device uses USB ACM, such as
+Pro Micro (Atmega32u4), make sure to include `CONFIG_USB_ACM=y`. Other devices may require `USB_SERIAL` and any of its sub options.
+
+## Unknown Device for DFU Bootloader
+
+Issues encountered when flashing keyboards on Windows are most often due to having the wrong drivers installed for the bootloader, or none at all.
+
+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.
+
+If that doesn't work, then you may need to download and run Zadig. See [Bootloader Driver Installation with Zadig](driver_installation_zadig.md) for more detailed information.
 
 ## WINAVR is Obsolete
 It is no longer recommended and may cause some problem.
@@ -90,17 +134,19 @@ OPT_DEFS += -DBOOTLOADER_SIZE=2048
 ```
 
 ## `avr-gcc: internal compiler error: Abort trap: 6 (program cc1)` on MacOS
-This is an issue with updating on brew, causing symlinks that avr-gcc depend on getting mangled. 
+This is an issue with updating on brew, causing symlinks that avr-gcc depend on getting mangled.
 
-The solution is to remove and reinstall all affected modules. 
+The solution is to remove and reinstall all affected modules.
 
 ```
 brew rm avr-gcc
 brew rm dfu-programmer
+brew rm dfu-util
 brew rm gcc-arm-none-eabi
 brew rm avrdude
 brew install avr-gcc
 brew install dfu-programmer
+brew install dfu-util
 brew install gcc-arm-none-eabi
 brew install avrdude
 ```
@@ -115,6 +161,14 @@ For now, you need to rollback avr-gcc to 7 in brew.
 
 ```
 brew uninstall --force avr-gcc
-brew install avr-gcc@7
-brew link avr-gcc@7
+brew install avr-gcc@8
+brew link --force avr-gcc@8
 ```
+
+### 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)
+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.
+
+[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.
+[Preonic rev3 reset EEPROM](https://cdn.discordapp.com/attachments/473506116718952450/537849497313738762/preonic_rev3_default.bin)
+
+If bootmagic is enabled in any form, you should be able to do this too (see [Bootmagic docs](feature_bootmagic.md) and keyboard info for specifics on how to do this).