215 lines
9.7 KiB
Markdown
215 lines
9.7 KiB
Markdown
# Frequently Asked Questions
|
||
|
||
## What is QMK?
|
||
|
||
[QMK](https://github.com/qmk), short for Quantum Mechanical Keyboard, is a group of people building tools for custom keyboards. We started with the [QMK firmware](https://github.com/qmk/qmk_firmware), a heavily modified fork of [TMK](https://github.com/tmk/tmk_keyboard).
|
||
|
||
## What Differences Are There Between QMK and TMK?
|
||
|
||
TMK was originally designed and implemented by [Jun Wako](https://github.com/tmk). QMK started as [Jack Humbert's](https://github.com/jackhumbert) fork of TMK for the Planck. After a while Jack's fork had diverged quite a bit from TMK, and in 2015 Jack decided to rename his fork to QMK.
|
||
|
||
From a technical standpoint QMK builds upon TMK by adding several new features. Most notably QMK has expanded the number of available keycodes and uses these to implement advanced features like `S()`, `LCTL()`, and `MO()`. You can see a complete list of these keycodes in [Quantum Keycodes](quantum_keycodes.html).
|
||
|
||
From a project and community management standpoint TMK maintains all the officially supported keyboards by himself, with a bit of community support. Separate community maintained forks exist or can be created for other keyboards. Only a few keymaps are provided by default, so users typically don't share keymaps with each other. QMK encourages sharing of both keyboards and keymaps through a centrally managed repository, accepting all pull requests that follows the quality standards. These are mostly community maintained, but the QMK team also helps when necessary.
|
||
|
||
Both approaches have their merits and their drawbacks, and code flows freely between TMK and QMK when it makes sense.
|
||
|
||
# Debug Console
|
||
## hid_listen can't recognize device
|
||
When debug console of your device is not ready you will see like this:
|
||
|
||
```
|
||
Waiting for device:.........
|
||
```
|
||
|
||
once the device is pluged in then *hid_listen* finds it you will get this message:
|
||
|
||
```
|
||
Waiting for new device:.........................
|
||
Listening:
|
||
```
|
||
|
||
If you can't get this 'Listening:' message try building with `CONSOLE_ENABLE=yes` in [Makefile]
|
||
|
||
You may need privilege to access the device on OS like Linux.
|
||
- try `sudo hid_listen`
|
||
|
||
## Can't get message on console
|
||
Check:
|
||
- *hid_listen* finds your device. See above.
|
||
- Enable debug with pressing **Magic**+d. See [Magic Commands](https://github.com/tmk/tmk_keyboard#magic-commands).
|
||
- set `debug_enable=true` usually in `matrix_init()` in **matrix.c**.
|
||
- try using 'print' function instead of debug print. See **common/print.h**.
|
||
- disconnect other devices with console function. See [Issue #97](https://github.com/tmk/tmk_keyboard/issues/97).
|
||
|
||
## Linux or UNIX like system requires Super User privilege
|
||
Just use 'sudo' to execute *hid_listen* with privilege.
|
||
```
|
||
$ sudo hid_listen
|
||
```
|
||
|
||
Or add an *udev rule* for TMK devices with placing a file in rules directory. The directory may vary on each system.
|
||
|
||
File: /etc/udev/rules.d/52-tmk-keyboard.rules(in case of Ubuntu)
|
||
```
|
||
# tmk keyboard products https://github.com/tmk/tmk_keyboard
|
||
SUBSYSTEMS=="usb", ATTRS{idVendor}=="feed", MODE:="0666"
|
||
```
|
||
|
||
***
|
||
|
||
# Miscellaneous
|
||
## NKRO Doesn't work
|
||
First you have to compile frimware with this build option `NKRO_ENABLE` in **Makefile**.
|
||
|
||
Try `Magic` **N** command(`LShift+RShift+N` by default) when **NKRO** still doesn't work. You can use this command to toggle between **NKRO** and **6KRO** mode temporarily. In some situations **NKRO** doesn't work you need to switch to **6KRO** mode, in particular when you are in BIOS.
|
||
|
||
If your firmeare built with `BOOTMAGIC_ENABLE` you need to turn its switch on by `BootMagic` **N** command(`Space+N` by default). This setting is stored in EEPROM and keeped over power cycles.
|
||
|
||
https://github.com/tmk/tmk_keyboard#boot-magic-configuration---virtual-dip-switch
|
||
|
||
|
||
## TrackPoint needs reset circuit(PS/2 mouse support)
|
||
Without reset circuit you will have inconsistent reuslt due to improper initialize of the hardware. See circuit schematic of TPM754.
|
||
|
||
- http://geekhack.org/index.php?topic=50176.msg1127447#msg1127447
|
||
- http://www.mikrocontroller.net/attachment/52583/tpm754.pdf
|
||
|
||
|
||
## Can't read column of matrix beyond 16
|
||
Use `1UL<<16` instead of `1<<16` in `read_cols()` in [matrix.h] when your columns goes beyond 16.
|
||
|
||
In C `1` means one of [int] type which is [16bit] in case of AVR so you can't shift left more than 15. You will get unexpected zero when you say `1<<16`. You have to use [unsigned long] type with `1UL`.
|
||
|
||
http://deskthority.net/workshop-f7/rebuilding-and-redesigning-a-classic-thinkpad-keyboard-t6181-60.html#p146279
|
||
|
||
|
||
## Bootloader jump doesn't work
|
||
Properly configure bootloader size in **Makefile**. With wrong section size bootloader won't probably start with **Magic command** and **Boot Magic**.
|
||
```
|
||
# Size of Bootloaders in bytes:
|
||
# Atmel DFU loader(ATmega32U4) 4096
|
||
# Atmel DFU loader(AT90USB128) 8192
|
||
# LUFA bootloader(ATmega32U4) 4096
|
||
# Arduino Caterina(ATmega32U4) 4096
|
||
# USBaspLoader(ATmega***) 2048
|
||
# Teensy halfKay(ATmega32U4) 512
|
||
# Teensy++ halfKay(AT90USB128) 2048
|
||
OPT_DEFS += -DBOOTLOADER_SIZE=4096
|
||
```
|
||
AVR Boot section size are defined by setting **BOOTSZ** fuse in fact. Consult with your MCU datasheet.
|
||
Note that **Word**(2 bytes) size and address are used in datasheet while TMK uses **Byte**.
|
||
|
||
AVR Boot section is located at end of Flash memory like the followings.
|
||
```
|
||
byte Atmel/LUFA(ATMega32u4) byte Atmel(AT90SUB1286)
|
||
0x0000 +---------------+ 0x00000 +---------------+
|
||
| | | |
|
||
| | | |
|
||
| Application | | Application |
|
||
| | | |
|
||
= = = =
|
||
| | 32KB-4KB | | 128KB-8KB
|
||
0x6000 +---------------+ 0x1E000 +---------------+
|
||
| Bootloader | 4KB | Bootloader | 8KB
|
||
0x7FFF +---------------+ 0x1FFFF +---------------+
|
||
|
||
|
||
byte Teensy(ATMega32u4) byte Teensy++(AT90SUB1286)
|
||
0x0000 +---------------+ 0x00000 +---------------+
|
||
| | | |
|
||
| | | |
|
||
| Application | | Application |
|
||
| | | |
|
||
= = = =
|
||
| | 32KB-512B | | 128KB-2KB
|
||
0x7E00 +---------------+ 0x1FC00 +---------------+
|
||
| Bootloader | 512B | Bootloader | 2KB
|
||
0x7FFF +---------------+ 0x1FFFF +---------------+
|
||
```
|
||
|
||
And see this discussion for further reference.
|
||
https://github.com/tmk/tmk_keyboard/issues/179
|
||
|
||
|
||
## Special Extra key doesn't work(System, Audio control keys)
|
||
You need to define `EXTRAKEY_ENABLE` in `rules.mk` to use them in QMK.
|
||
|
||
```
|
||
EXTRAKEY_ENABLE = yes # Audio control and System control
|
||
```
|
||
|
||
## Wakeup from sleep doesn't work
|
||
|
||
In Windows check `Allow this device to wake the computer` setting in Power **Management property** tab of **Device Manager**. Also check BIOS setting.
|
||
|
||
Pressing any key during sleep should wake host.
|
||
|
||
## Using Arduino?
|
||
|
||
**Note that Arduino pin naming is different from actual chip.** For example, Arduino pin `D0` is not `PD0`. Check circuit with its schematics yourself.
|
||
|
||
- http://arduino.cc/en/uploads/Main/arduino-leonardo-schematic_3b.pdf
|
||
- http://arduino.cc/en/uploads/Main/arduino-micro-schematic.pdf
|
||
|
||
Arduino leonardo and micro have **ATMega32U4** and can be used for TMK, though Arduino bootloader may be a problem.
|
||
|
||
|
||
## Using PF4-7 pins of USB AVR?
|
||
You need to set JTD bit of MCUCR yourself to use PF4-7 as GPIO. Those pins are configured to serve JTAG function by default. MCUs like ATMega*U* or AT90USB* are affeteced with this.
|
||
|
||
If you are using Teensy this isn't needed. Teensy is shipped with JTAGEN fuse bit unprogrammed to disable the function.
|
||
|
||
See this code.
|
||
```
|
||
// JTAG disable for PORT F. write JTD bit twice within four cycles.
|
||
MCUCR |= (1<<JTD);
|
||
MCUCR |= (1<<JTD);
|
||
```
|
||
https://github.com/tmk/tmk_keyboard/blob/master/keyboard/hbkb/matrix.c#L67
|
||
|
||
And read **26.5.1 MCU Control Register – MCUCR** of ATMega32U4 datasheet.
|
||
|
||
|
||
## Adding LED indicators of Lock keys
|
||
You need your own LED indicators for CapsLock, ScrollLock and NumLock? See this post.
|
||
|
||
http://deskthority.net/workshop-f7/tmk-keyboard-firmware-collection-t4478-120.html#p191560
|
||
|
||
## Program Arduino Micro/Leonardo
|
||
Push reset button and then run command like this within 8 seconds.
|
||
|
||
```
|
||
avrdude -patmega32u4 -cavr109 -b57600 -Uflash:w:adb_usb.hex -P/dev/ttyACM0
|
||
```
|
||
|
||
Device name will vary depending on your system.
|
||
|
||
http://arduino.cc/en/Main/ArduinoBoardMicro
|
||
https://geekhack.org/index.php?topic=14290.msg1563867#msg1563867
|
||
|
||
|
||
## USB 3 compatibility
|
||
I heard some people have a problem with USB 3 port, try USB 2 port.
|
||
|
||
|
||
## Mac compatibility
|
||
### OS X 10.11 and Hub
|
||
https://geekhack.org/index.php?topic=14290.msg1884034#msg1884034
|
||
|
||
|
||
## Problem on BIOS(UEFI)/Resume(Sleep&Wake)/Power cycles
|
||
Some people reported their keyboard stops working on BIOS and/or after resume(power cycles).
|
||
|
||
As of now root of its cause is not clear but some build options seem to be related. In Makefile try to disable those options like `CONSOLE_ENABLE`, `NKRO_ENABLE`, `SLEEP_LED_ENABLE` and/or others.
|
||
|
||
https://github.com/tmk/tmk_keyboard/issues/266
|
||
https://geekhack.org/index.php?topic=41989.msg1967778#msg1967778
|
||
|
||
|
||
|
||
## FLIP doesn't work
|
||
### AtLibUsbDfu.dll not found
|
||
Remove current driver and reinstall one FLIP provides from DeviceManager.
|
||
http://imgur.com/a/bnwzy
|