Merge branch 'master' of https://github.com/qmk/qmk_firmware

1 files changed, 242 insertions, 0 deletions

diff --git a/docs/faq_debug.md b/docs/faq_debug.md
new file mode 100644
index 0000000000..3f7cfe7477
--- /dev/null
+++ b/docs/faq_debug.md
@@ -0,0 +1,242 @@
+# Debugging FAQ
+
+This page details various common questions people have about troubleshooting their keyboards.
+
+# 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
+## Safety Considerations
+
+You probably don't want to "brick" your keyboard, making it impossible
+to rewrite firmware onto it.  Here are some of the parameters to show
+what things are (and likely aren't) too risky.
+
+- If your keyboard map does not include RESET, then, to get into DFU
+  mode, you will need to press the reset button on the PCB, which
+  requires unscrewing the bottom.
+- Messing with tmk_core / common files might make the keyboard
+  inoperable
+- Too large a .hex file is trouble; `make dfu` will erase the block,
+  test the size (oops, wrong order!), which errors out, failing to
+  flash the keyboard, leaving it in DFU mode.
+  - To this end, note that the maximum .hex file size on Planck is
+    7000h (28672 decimal)
+
+```
+Linking: .build/planck_rev4_cbbrowne.elf                                                            [OK]
+Creating load file for Flash: .build/planck_rev4_cbbrowne.hex                                       [OK]
+
+Size after:
+   text    data     bss     dec     hex filename
+      0   22396       0   22396    577c planck_rev4_cbbrowne.hex
+```
+
+  - The above file is of size 22396/577ch, which is less than
+    28672/7000h
+  - As long as you have a suitable alternative .hex file around, you
+    can retry, loading that one
+  - Some of the options you might specify in your keyboard's Makefile
+    consume extra memory; watch out for BOOTMAGIC_ENABLE,
+    MOUSEKEY_ENABLE, EXTRAKEY_ENABLE, CONSOLE_ENABLE, API_SYSEX_ENABLE
+- DFU tools do /not/ allow you to write into the bootloader (unless
+  you throw in extra fruitsalad of options), so there is little risk
+  there.
+- EEPROM has around a 100000 write cycle.  You shouldn't rewrite the
+  firmware repeatedly and continually; that'll burn the EEPROM
+  eventually.
+## 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