Support for Adafruit Bluefruit Feather 32u4 (and related) + ps2->ble converter

converter/ps2_bluefruitle/Makefile

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+# Target file name (without extension).
+TARGET ?= ps2_bluefruit
+
+# Directory common source filess exist
+TMK_DIR ?= ../../tmk_core
+
+# Directory keyboard dependent files exist
+TARGET_DIR ?= .
+
+# keyboard dependent files
+SRC ?= matrix.c \
+	led.c
+#
+#
+# Keymap file
+#
+ifdef UNIMAP_ENABLE
+    KEYMAP_FILE = unimap
+else
+    ifdef ACTIONMAP_ENABLE
+	KEYMAP_FILE = actionmap
+    else
+	KEYMAP_FILE = keymap
+    endif
+endif
+ifdef KEYMAP
+    SRC := $(KEYMAP_FILE)_$(KEYMAP).c $(SRC)
+else
+    SRC := $(KEYMAP_FILE)_plain.c $(SRC)
+endif
+
+CONFIG_H = config.h
+
+BLUEFRUIT_TRACE_SERIAL=true
+
+# MCU name, you MUST set this to match the board you are using
+# type "make clean" after changing this, so all files will be rebuilt
+MCU = atmega32u4       
+
+
+# Processor frequency.
+#   Normally the first thing your program should do is set the clock prescaler,
+#   so your program will run at the correct speed.  You should also set this
+#   variable to same clock speed.  The _delay_ms() macro uses this, and many
+#   examples use this variable to calculate timings.  Do not add a "UL" here.
+F_CPU = 8000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+# This improves response of keyboard when wakeup
+OPT_DEFS += -DSUSPEND_MODE_STANDBY
+
+# Boot Section Size in bytes
+#   Teensy halfKay   512
+#   Atmel DFU loader 4096
+#   LUFA bootloader  4096
+OPT_DEFS += -DBOOTLOADER_SIZE=4096
+
+
+# Build Options
+#   comment out to disable the options.
+#
+#BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration(+1000)
+#MOUSEKEY_ENABLE = yes	# Mouse keys(+4700)
+#EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
+CONSOLE_ENABLE = yes	# Console for debug(+400)
+COMMAND_ENABLE = yes    # Commands for debug and configuration
+#SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
+#NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
+
+
+#
+# PS/2 protocol implementations
+# 	USART is recommended if it is available, others are for reference purpose.
+# 	INT implementation will drop simultaneous key strokes.
+#
+#PS2_USE_USART = yes	# uses hardware USART engine for PS/2 signal receive(recomened)
+#PS2_USE_INT ?= yes	# uses external interrupt for falling edge of PS/2 clock pin
+PS2_USE_BUSYWAIT = yes	# uses primitive reference code
+
+#---------------- Programming Options --------------------------
+AVRDUDE = avrdude
+# Type: avrdude -c ? to get a full listing.
+AVRDUDE_PROGRAMMER = avr109
+AVRDUDE_PORT = /dev/cu.usbmodem1421
+AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
+#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
+
+# Uncomment the following if you want avrdude's erase cycle counter.
+# Note that this counter needs to be initialized first using -Yn,
+# see avrdude manual.
+#AVRDUDE_ERASE_COUNTER = -y
+
+# Uncomment the following if you do /not/ wish a verification to be
+# performed after programming the device.
+#AVRDUDE_NO_VERIFY = -V
+
+# Increase verbosity level.  Please use this when submitting bug
+# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
+# to submit bug reports.
+#AVRDUDE_VERBOSE = -v -v
+
+AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+#AVRDUDE_FLAGS = -p $(MCU) -c $(AVRDUDE_PROGRAMMER)
+AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
+AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
+AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
+
+PROGRAM_CMD = $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
+
+
+
+# Search Path
+VPATH += $(TARGET_DIR)
+VPATH += $(TMK_DIR)
+
+
+include $(TMK_DIR)/protocol.mk
+include $(TMK_DIR)/protocol/bluefruitle_nrf51.mk
+include $(TMK_DIR)/protocol.mk
+include $(TMK_DIR)/common.mk
+include $(TMK_DIR)/rules.mk

converter/ps2_bluefruitle/README

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+Keyboard converter for IBM terminal keyboard
+============================================
+It supports PS/2 Scan Code Set 3 and runs on USB AVR chips such like PJRC Teensy.
+I tested the converter on ATMega32U4 with 1392595(102keys) and 6110345(122keys).
+
+Source code: https://github.com/tmk/tmk_keyboard
+Article: http://geekhack.org/index.php?topic=27272.0
+
+
+CONNECTION
+----------
+Keyboard    ATMega32U4
+----------------------
+Data:       PD2
+Clock:      PD5
+
+And VCC and GND, of course. See RESOURCE for keyboard connector pin assign.
+
+
+BUILD
+-----
+$ git clone https://github.com/tmk/tmk_keyboard.git
+$ cd converter/terminal_usb
+$ make 
+
+
+RESOURCE
+--------
+Soarer's Converter: http://geekhack.org/index.php?topic=17458.0
+102keys(1392595): http://geekhack.org/index.php?topic=10737.0
+122keys(1390876): http://www.seasip.info/VintagePC/ibm_1390876.html
+KbdBabel: http://www.kbdbabel.org/
+RJ45 Connector: http://www.kbdbabel.org/conn/kbd_connector_ibmterm.png
+DIN Connector: http://www.kbdbabel.org/conn/kbd_connector_ibm3179_318x_319x.png
+WinAVR: http://winavr.sourceforge.net/
+
+EOF

converter/ps2_bluefruitle/config.h

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+/*
+Converter for 70% IBM Terminal Keyboard
+Author: Benjamin Gould, 2013
+Based on code Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x6512
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    t.m.k.
+#define PRODUCT         PS/2 to Adafruit Bluefruit Feather 32u4
+#define DESCRIPTION     PS/2 to Adafruit Bluefruit Feather 32u4
+
+
+
+/* matrix size */
+#define MATRIX_ROWS 32  // keycode bit: 3-0
+#define MATRIX_COLS 8   // keycode bit: 6-4
+
+
+/* legacy keymap support */
+// #define USE_LEGACY_KEYMAP
+
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) || \
+    keyboard_report->mods == (MOD_BIT(KC_LALT) | MOD_BIT(KC_RALT)) \
+)
+
+
+//#define NO_SUSPEND_POWER_DOWN
+
+
+/*
+ * PS/2 Busywait
+ */
+#ifdef PS2_USE_BUSYWAIT
+#define PS2_CLOCK_PORT  PORTD
+#define PS2_CLOCK_PIN   PIND
+#define PS2_CLOCK_DDR   DDRD
+#define PS2_CLOCK_BIT   1
+#define PS2_DATA_PORT   PORTD
+#define PS2_DATA_PIN    PIND
+#define PS2_DATA_DDR    DDRD
+#define PS2_DATA_BIT    0
+#endif
+
+/*
+ * PS/2 Pin interrupt
+ */
+#ifdef PS2_USE_INT
+/* uses INT1 for clock line(ATMega32U4) */
+#define PS2_CLOCK_PORT  PORTD
+#define PS2_CLOCK_PIN   PIND
+#define PS2_CLOCK_DDR   DDRD
+#define PS2_CLOCK_BIT   1
+#define PS2_DATA_PORT   PORTD
+#define PS2_DATA_PIN    PIND
+#define PS2_DATA_DDR    DDRD
+#define PS2_DATA_BIT    0
+#define PS2_INT_INIT()  do {    \
+    EICRA |= ((1<<ISC11) |      \
+              (0<<ISC10));      \
+} while (0)
+#define PS2_INT_ON()  do {      \
+    EIMSK |= (1<<INT1);         \
+} while (0)
+#define PS2_INT_OFF() do {      \
+    EIMSK &= ~(1<<INT1);        \
+} while (0)
+#define PS2_INT_VECT    INT1_vect
+#endif
+
+#ifdef LUFA_DEBUG_SUART
+#   define SUART_OUT_DDR   DDRD
+#   define SUART_OUT_PORT  PORTD
+#   define SUART_OUT_BIT   4
+#   define SUART_IN_DDR    DDRD
+#   define SUART_IN_PIN    PIND
+#   define SUART_IN_BIT    4
+#endif
+
+#endif