forked from mirrors/qmk_userspace
Added USART implementation for PS/2 signal handling.
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tmk
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6 changed files with 175 additions and 44 deletions
1
keymap.h
1
keymap.h
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@ -20,7 +20,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include <stdint.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdbool.h>
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#include "usb_keycodes.h"
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/* keycode in specific layer */
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/* keycode in specific layer */
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1
layer.c
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layer.c
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@ -19,6 +19,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "host.h"
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#include "host.h"
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#include "debug.h"
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#include "debug.h"
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#include "timer.h"
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#include "timer.h"
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#include "usb_keycodes.h"
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#include "layer.h"
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#include "layer.h"
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@ -95,10 +95,8 @@ static inline uint16_t wait_data_lo(uint16_t us);
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static inline uint16_t wait_data_hi(uint16_t us);
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static inline uint16_t wait_data_hi(uint16_t us);
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static inline void idle(void);
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static inline void idle(void);
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static inline void inhibit(void);
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static inline void inhibit(void);
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#if defined PS2_USE_INT || defined PS2_USE_USART
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static inline uint8_t pbuf_dequeue(void);
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static inline uint8_t pbuf_dequeue(void);
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static inline void pbuf_enqueue(uint8_t data);
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static inline void pbuf_enqueue(uint8_t data);
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#endif
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void ps2_host_init(void)
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void ps2_host_init(void)
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56
ps2_usb/Makefile.pjrc_usart
Normal file
56
ps2_usb/Makefile.pjrc_usart
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@ -0,0 +1,56 @@
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#
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# Makefile for PJRC Teensy
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#
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# Target file name (without extension).
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TARGET = ps2_usb_pjrc_usart
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# Directory common source filess exist
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COMMON_DIR = ..
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# Directory keyboard dependent files exist
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TARGET_DIR = .
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# keyboard dependent files
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SRC = main.c \
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keymap.c \
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matrix.c \
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led.c \
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ps2_usart.c
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CONFIG_H = config_pjrc_usart.h
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# MCU name, you MUST set this to match the board you are using
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# type "make clean" after changing this, so all files will be rebuilt
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#MCU = at90usb162 # Teensy 1.0
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MCU = atmega32u4 # Teensy 2.0
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#MCU = at90usb646 # Teensy++ 1.0
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#MCU = at90usb1286 # Teensy++ 2.0
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# Processor frequency.
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# Normally the first thing your program should do is set the clock prescaler,
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# so your program will run at the correct speed. You should also set this
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# variable to same clock speed. The _delay_ms() macro uses this, and many
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# examples use this variable to calculate timings. Do not add a "UL" here.
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F_CPU = 16000000
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# Build Options
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# *Comment out* to disable the options.
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#
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MOUSEKEY_ENABLE = yes # Mouse keys
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EXTRAKEY_ENABLE = yes # Audio control and System control
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NKRO_ENABLE = yes # USB Nkey Rollover
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#---------------- Programming Options --------------------------
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PROGRAM_CMD = teensy_loader_cli -mmcu=$(MCU) -w -v $(TARGET).hex
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include $(COMMON_DIR)/pjrc.mk
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include $(COMMON_DIR)/common.mk
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@ -1,40 +1,56 @@
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PS/2 to USB keyboard converter
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PS/2 to USB keyboard converter
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==============================
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==============================
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This firmware converts PS/2 keyboard protocol to USB and for now supports only Scan Code Set 2.
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This firmware converts PS/2 keyboard protocol to USB and for now supports only Scan Code Set 2.
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This will works on USB AVR(ATMega32U4, AT90USB) or V-USB.
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Features
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Features
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--------
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--------
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Mouse keys
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Mouse keys
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You can emulates mouse move and button click using keyboard.
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You can emulates mouse move and button click using keyboard.
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System/Media control
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System/Media control
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You can sends Power event, Volume down/up and Mute.
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You can sends Power event, Volume down/up and Mute.
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USB NKRO(actually 120KRO+8Modifiers)
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USB NKRO(actually 120KRO+8Modifiers)
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You can tolggles NKRO feature.
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You can tolggles NKRO feature.
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Keymap customization
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Keymap customization
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You can customize keymaps easily by editing source code. See keymap.c.
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You can customize keymaps easily by editing source code. See keymap.c.
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PS/2 signal handling implementations
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------------------------------------
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Following three methods are used to implement PS/2 signal handling.
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a. Simple and stupid wait & read loop(intensive use of cycles)
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This is implemented with (expected) portable C code for reference. See ps2.c.
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b. Interrupt driven
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See ps2_intr.c
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c. Using USART hardware module(no cycle needed)
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This uses AVR USART function to recevie PS/2 signal and be used in V-USB converter.
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See ps2_usart.c.
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Build Converter
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Build Converter
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---------------
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---------------
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0. Connect PS/2 keyboard into Teensy with 4 lines(Vcc, GND, Data, Clock).
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Connect PS/2 keyboard into Teensy with 4 lines(Vcc, GND, Data, Clock).
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By default Clock is on PF0 and Data on PF1.
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For a. Simple and stupid and b. Interrupt implementaion:
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You can change this pin configuration by editing config_pjrc.h.
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By default Clock is on PF0 and Data on PF1.
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In this photo Vcc is yellow, GND is green, Data is red and Clock is black.
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You can change this pin configuration by editing config_pjrc.h.
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http://img17.imageshack.us/img17/7243/201101181933.jpg
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In this photo Vcc is yellow, GND is green, Data is red and Clock is black.
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http://img17.imageshack.us/img17/7243/201101181933.jpg
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For c. USART implementation:
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In case of Teensny(ATMega32u4) CLock is on PD2 and Data on PD5.
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Build Frimware
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Build Frimware
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--------------
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--------------
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1. Edit Makefile for build options and MCU setting.
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1. Edit Makefile for build options and MCU setting.
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Use 'atmega32u4' for Teensy 2.0 or 'at90usb1286' for Teensy++ 2.0.
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Use 'atmega32u4' for Teensy 2.0 or 'at90usb1286' for Teensy++ 2.0.
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2. make
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2. make
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Just type 'make' in a terminal.
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Just type 'make' in a terminal.
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Use '-f Makefile.pjrc_intr' option to use b. Interrupt.
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Use '-f Makefile.pjrc_usart' option to use c. USART.
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Use '-f Makefile.vusb' option to build V-USB converter.
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3. program with Teensy Loader.
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3. program with Teensy Loader.
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http://www.pjrc.com/teensy/loader.html
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http://www.pjrc.com/teensy/loader.html
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Demonstration of Features
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Demonstration of Features
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@ -97,34 +113,4 @@ To define keymap layer switching may needs a bit of your effort at this time.
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),
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),
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Multimedia keys
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---------------
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Following lists PS/2 special keys supported by Windows.
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http://msdn.microsoft.com/en-us/windows/hardware/gg463372.aspx
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Key PS/2(Set2) HID
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---------------------------------------------------
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System Power E0 37 01 0081
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System Sleep E0 3F 01 0082
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System Wake E0 5E 01 0083
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System Mute E0 23 0C 00E2
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Volume Up E0 32 0C 00E9
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Volume Down E0 21 0C 00EA
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Scan Next Track E0 4D 0C 00B5
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Scan Previous Track E0 15 0C 00B6
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Stop E0 3B 0C 00B7
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Play/Pause E0 34 0C 00CD
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Media Select E0 50 0C 0183
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Mail E0 48 0C 018A
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Calculator E0 2B 0C 0192
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My Computer E0 40 0C 0194
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WWW Search E0 10 0C 0221
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WWW Home E0 3A 0C 0223
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WWW Back E0 38 0C 0224
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WWW Forward E0 30 0C 0225
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WWW Stop E0 28 0C 0226
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WWW Refresh E0 20 0C 0227
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WWW Favorites E0 18 0C 022A
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EOF
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EOF
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91
ps2_usb/config_pjrc_usart.h
Normal file
91
ps2_usb/config_pjrc_usart.h
Normal file
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@ -0,0 +1,91 @@
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/*
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Copyright 2012 Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CONFIG_H
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#define CONFIG_H
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/* controller configuration */
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#include "controller_teensy.h"
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#define VENDOR_ID 0xFEED
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#define PRODUCT_ID 0x6513
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#define MANUFACTURER t.m.k.
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#define PRODUCT PS/2 keyboard converter(USART)
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#define DESCRIPTION convert PS/2 keyboard to USB
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/* matrix size */
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#define MATRIX_ROWS 32 // keycode bit: 3-0
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#define MATRIX_COLS 8 // keycode bit: 6-4
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/* key combination for command */
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#define IS_COMMAND() ( \
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keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_RSHIFT)) || \
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keyboard_report->mods == (MOD_BIT(KB_LCTRL) | MOD_BIT(KB_RSHIFT)) \
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)
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/* mouse keys */
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#ifdef MOUSEKEY_ENABLE
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# define MOUSEKEY_DELAY_TIME 255
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#endif
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/* PS/2 lines */
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#define PS2_CLOCK_PORT PORTF
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#define PS2_CLOCK_PIN PINF
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#define PS2_CLOCK_DDR DDRF
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#define PS2_CLOCK_BIT 5
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#define PS2_DATA_PORT PORTF
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#define PS2_DATA_PIN PINF
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#define PS2_DATA_DDR DDRF
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#define PS2_DATA_BIT 2
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// synchronous, odd parity, 1-bit stop, 8-bit data, sample at falling edge
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// set DDR of CLOCK as input to be slave
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#define PS2_USART_INIT() do { \
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PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); \
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PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); \
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UCSR1C = ((1 << UMSEL10) | \
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(3 << UPM10) | \
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(0 << USBS1) | \
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(3 << UCSZ10) | \
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(0 << UCPOL1)); \
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UCSR1A = 0; \
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UBRR1H = 0; \
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UBRR1L = 0; \
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} while (0)
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#define PS2_USART_RX_INT_ON() do { \
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UCSR1B = ((1 << RXCIE1) | \
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(1 << RXEN1)); \
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} while (0)
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#define PS2_USART_RX_POLL_ON() do { \
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UCSR1B = (1 << RXEN1); \
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} while (0)
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#define PS2_USART_OFF() do { \
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UCSR1C = 0; \
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UCSR1B &= ~((1 << RXEN1) | \
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(1 << TXEN1)); \
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} while (0)
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#define PS2_USART_RX_READY (UCSR1A & (1<<RXC1))
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#define PS2_USART_RX_DATA UDR1
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#define PS2_USART_ERROR (UCSR1A & ((1<<FE1) | (1<<DOR1) | (1<<UPE1)))
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#define PS2_USART_RX_VECT USART1_RX_vect
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#endif
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