mirror of
https://github.com/qmk/qmk_firmware
synced 2024-12-22 16:36:58 +00:00
dbd65d01b6
* Fix how USB queue overflow is handled in chibios. This commit reverts PR 12472 (commit c823fe2d3f23ed090e36ce39beed4c448298bd2f), and it implements the original intent of the commit in a better way. The original intent of the above mentioned commit was to not deadlock the keyboard when console is enabled, and hid_listen is not started. The above mentioned commit had a few drawbacks: 1) When a lot of data was printed to the console, the queue would get full, and drop data, even if hid_listen was running. (For example having matrix debug enabled just didn't work right at all) 2) I believe the function in which this was implemented is used by all other USB endpoints, so with the above change, overflow, and data loss could happen in other important functions of QMK as well. This commit implements deadlock prevention in a slightly similar way to how it's done on AVR. There is an additional static local variable, that memorizes whether the console has timeouted before. If we are in the timeouted=false state, then we send the character normally with a 5ms timeout. If it does time out, then hid_listen is likely not running, and future characters should not be sent with a timeout, but those characters should still be sent if there is space in the queue. The difference between the AVR implementation and this one is that the AVR implementation checks the queue state directly, but this implementation instead attempts to write the character with a zero timeout. If it fails, then we remain in the timeouted=true state, if it succeeds, then hid_listen started removing data from the queue, so we can go out of the timeouted=true state. * Added comment explaining the timeouted logic to console flow control. * Console flow control: refactor chibios flowcontrol code to make it more readable, and rename the timeouted variable to timed_out on both chibios and lufa. Changed comments to says timed_out is an approximation of listener_disconnected, to make it clear that it's not the same thing * fix typo
TMK Keyboard Firmware Core Library
This is a keyboard firmware library with some useful features for Atmel AVR and Cortex-M.
Source code is available here: https://github.com/tmk/tmk_keyboard/tree/master/tmk_core
Updates
2016/02/10
flabbergast's Chibios protocol was merged from https://github.com/flabbergast/tmk_keyboard/tree/chibios. See protocol/chibios/README.md. Chibios protocol supports Cortex-M such as STM32 and Kinetis.
2015/04/22
separated with TMK Keyboard Firmware Collection
Features
These features can be used in your keyboard.
- Multi-layer Keymap - Multiple keyboard layouts with layer switching
- Mouse key - Mouse control with keyboard
- System Control Key - Power Down, Sleep, Wake Up and USB Remote Wake up
- Media Control Key - Volume Down/Up, Mute, Next/Prev track, Play, Stop and etc
- USB NKRO - 248 keys(+ 8 modifiers) simultaneously
- PS/2 mouse support - PS/2 mouse(TrackPoint) as composite device
- Keyboard protocols - PS/2, ADB, M0110, Sun and other old keyboard protocols
- User Function - Customizable function of key with writing code
- Macro - Very primitive at this time
- Keyboard Tricks - Oneshot modifier and modifier with tapping feature
- Debug Console - Messages for debug and interaction with firmware
- Virtual DIP Switch - Configurations stored EEPROM(Boot Magic)
- Locking CapsLock - Mechanical switch support for CapsLock
- Breathing Sleep LED - Sleep indicator with charm during USB suspend
- Backlight - Control backlight levels
TMK Keyboard Firmware Collection
Complete firmwares for various keyboards and protocol converters.
https://github.com/tmk/tmk_keyboard
License
GPLv2 or later. Some protocol files are under Modified BSD License. ChibiOS, LUFA and V-USB stack have their own license respectively.
Build Firmware and Program Controller
See doc/build.md.
Start Your Own Project
TBD
Config.h Options
1. USB vendor/product ID and device description
#define VENDOR_ID 0xFEED
#define PRODUCT_ID 0xBEEF
#define MANUFACTURER t.m.k.
#define PRODUCT Macway mod
2. Keyboard matrix configuration
#define MATRIX_ROWS 8
#define MATRIX_COLS 8
#define MATRIX_HAS_GHOST
Architecture
Architecture Diagram
+---------------+---------------+-------------+
| Host | Keyboard | Matrix, LED |
___________ |-----------+-+ +-------------+ | +-----------|
/ /| Keys/Mouse | Protocol |d| | Action | | | Protocol |
/__________/ |<-----------| LUFA |r| | Layer, Tap | | | Matrix |
|.--------.| | LED | V-USB |i| |-------------| | | PS/2,IBM | __________________
|| || |----------->| UART |v| | Keymap | | | ADB,M0110| Keys / /_/_/_/_/_/_/_/ /|
|| Host || | Console | |e| | Mousekey | | | SUN/NEWS |<----------/ /_/_/_/_/_/_/_/ / /
||________||/.<-----------| |r| | Report | | | X68K/PC98| Control / /_/_/_/_/_/_/_/ / /
`_========_'/| |---------------------------------------------|-------->/___ /_______/ ___/ /
|_o______o_|/ | Sendchar, Print, Debug, Command, ... | |_________________|/
+---------------------------------------------+ Keyboard
Debugging
Use PJRC's hid_listen to see debug messages. You can use the tool for debug even if firmware use LUFA stack.
You can use xprintf() to display debug info on hid_listen, see common/xprintf.h.
Files and Directories
Top
- common/ - common codes
- protocol/ - keyboard protocol support
- doc/ - documents
- common.mk - Makefile for common
- protocol.mk - Makefile for protocol
- rules.mk - Makefile for build rules
Common
- host.h
- host_driver.h
- keyboard.h
- command.h
- keymap.h
- action.h
- keycode.h
- matrix.h
- led.h
- mousekey.h
- report.h
- debug.h
- print.h
- bootloader.h
- sendchar.h
- timer.h
- util.h
Keyboard Protocols
- lufa/ - LUFA USB stack
- vusb/ - Objective Development V-USB
- ps2.c - PS/2 protocol
- adb.c - Apple Desktop Bus protocol
- m0110.c - Macintosh 128K/512K/Plus keyboard protocol
- news.c - Sony NEWS keyboard protocol
- x68k.c - Sharp X68000 keyboard protocol
- serial_soft.c - Asynchronous Serial protocol implemented by software
Coding Style
- Doesn't use Tab to indent, use 4-spaces instead.