hhkb: Integrate RN-42 support, remove hhkb_rn42

24 files changed, 2093 insertions, 28 deletions

diff --git a/keyboard/hhkb/Makefile.nodebug b/keyboard/hhkb/Makefile.rn42
index 578ba70c45..b1eacd070f 100644
--- a/keyboard/hhkb/Makefile.nodebug
+++ b/keyboard/hhkb/Makefile.rn42
@@ -39,7 +39,7 @@
 #----------------------------------------------------------------------------
 
 # Target file name (without extension).
-TARGET = hhkb_lufa
+TARGET = hhkb_rn42
 
 # Directory common source filess exist
 TOP_DIR = ../..
@@ -53,19 +53,10 @@ SRC +=	keymap_common.c \
 	matrix.c \
 	led.c
 
-ifdef KEYMAP
-    SRC := keymap_$(KEYMAP).c $(SRC)
-else
-    SRC := keymap_hasu.c $(SRC)
-endif
-
-CONFIG_H = config.h
+CONFIG_H = config_rn42.h
 
 
 # MCU name
-# PJRC Teensy++ 2.0
-#MCU = at90usb1286
-# TMK Alt Controller or PJRC Teensy 2.0
 MCU = atmega32u4
 
 # Processor frequency.
@@ -117,19 +108,41 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 # Build Options
 #   comment out to disable the options.
 #
-BOOTMAGIC_ENABLE = yes		# Virtual DIP switch configuration
+#BOOTMAGIC_ENABLE = yes		# Virtual DIP switch configuration
 MOUSEKEY_ENABLE = yes		# Mouse keys
 EXTRAKEY_ENABLE = yes		# Audio control and System control
-#CONSOLE_ENABLE = yes		# Console for debug
+CONSOLE_ENABLE = yes		# Console for debug
 COMMAND_ENABLE = yes    	# Commands for debug and configuration
-NKRO_ENABLE = yes		# USB Nkey Rollover
-KEYMAP_SECTION_ENABLE = yes	# fixed address keymap for keymap editor
+#NKRO_ENABLE = yes		# USB Nkey Rollover
+#KEYMAP_SECTION_ENABLE = yes	# fixed address keymap for keymap editor
+#HHKB_JP = yes			# HHKB JP support
+
+
+#
+# Keymap file
+#
+ifdef KEYMAP
+    SRC := keymap_$(KEYMAP).c $(SRC)
+else
+    ifdef HHKB_JP
+    	SRC := keymap_jp.c $(SRC)
+    else 
+    	SRC := keymap_hhkb.c $(SRC)
+    endif
+endif
+
+
+ifneq (, $(or $(findstring keymap_jp.c, $(SRC)), $(findstring yes, $(HHKB_JP))))
+    OPT_DEFS += -DHHKB_JP
+endif
 
 
 # Search Path
 VPATH += $(TARGET_DIR)
 VPATH += $(TOP_DIR)
 
+include rn42.mk
+include $(TOP_DIR)/protocol.mk
 include $(TOP_DIR)/protocol/lufa.mk
 include $(TOP_DIR)/common.mk
 include $(TOP_DIR)/rules.mk
@@ -138,4 +151,5 @@ debug-on: EXTRAFLAGS += -DDEBUG -DDEBUG_ACTION
 debug-on: all
 
 debug-off: EXTRAFLAGS += -DNO_DEBUG -DNO_PRINT
+debug-off: OPT_DEFS := $(filter-out -DCONSOLE_ENABLE,$(OPT_DEFS))
 debug-off: all
diff --git a/keyboard/hhkb/README.md b/keyboard/hhkb/README.md
index f9fd165076..fcd72e1941 100644
--- a/keyboard/hhkb/README.md
+++ b/keyboard/hhkb/README.md
@@ -10,11 +10,17 @@ See [this thread][AltController] in geekhack.org.
 [AltController]: http://geekhack.org/index.php?topic=12047.0
 
 
+## Update
+* Bluetooth module RN-42 is supported.(2015/01)
+* V-USB and iWRAP are no longer supported now, but still it'll works with a little fix. See not_supported directory.(2015/01)
+
+
 ##Features
 * Customizable keymap
 * More keymap layers(more Fn keys)
 * Mouse keys
 * USB NKRO
+* Bluetooth(RN-42)
 
 See README of [tmk_keyboard] for more.
 
@@ -50,8 +56,9 @@ If you use other than **TMK Alt Controller Board** set proper `MCU`, `BOOTLOADER
 ### Build 
 Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. Just `make` with `KEYMAP` option like:
 
-    $ make KEYMAP=[hasu|hhkb|spacefn|<name>]
-    $ make -f Makefile.jp KEYMAP=[jp|<name>]        # for HHKB JP
+    $ make -f Makefile.<jp|pjrc|rn42> KEYMAP=(hasu|hhkb|spacefn|<name>)
+
+You can omit `-f` option when you use `Makefile`. `Makefile` is used for **Pro2 and Pro**, `Makefile.jp` fits for **JP** model and `Makefile.rn42` supports Bluetooth module **RN-42**. `Makefile.pjrc` uses **PJRC** as output protocol instead of **LUFA**.
 
 
 ### Program
@@ -59,13 +66,11 @@ First, push reset button on board to start bootloader.
 
 This command programs the controller with [dfu-programmer] if the tool is installed and configured properly.
 
-    $ make dfu
-    $ make -f Makefile.jp dfu       # for HHKB JP
+    $ make -f Makefile.<variant> KEYMAP=<name> dfu
 
 Or you can also use [FLIP] command to program. Also the tool should be installed and configured properly. FLIP GUI application is also available.
 
-    $ make flip
-    $ make -f Makefile.jp flip      # for HHKB JP
+    $ make -f Makefile.<variant> KEYMAP=<name> flip
 
 Use [Teensy Loader] if your controller is Teensy/Teensy++.
 
diff --git a/keyboard/hhkb/config_rn42.h b/keyboard/hhkb/config_rn42.h
new file mode 100644
index 0000000000..21e73f1c53
--- /dev/null
+++ b/keyboard/hhkb/config_rn42.h
@@ -0,0 +1,112 @@
+/*
+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      0x4242
+#define DEVICE_VER      0x0104
+#define MANUFACTURER    t.m.k.
+#define PRODUCT         HHKB mod
+#define DESCRIPTION     t.m.k. keyboard firmware for HHKB mod
+
+
+/* matrix size */
+#ifdef HHKB_JP
+#   define MATRIX_ROWS 16
+#else
+#   define MATRIX_ROWS 8
+#endif
+#define MATRIX_COLS 8
+
+
+/* key combination for command */
+#define IS_COMMAND() (keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT))) 
+
+
+/* period of tapping(ms) */
+#define TAPPING_TERM    300
+/* tap count needed for toggling a feature */
+#define TAPPING_TOGGLE  5
+/* Oneshot timeout(ms) */
+#define ONESHOT_TIMEOUT 300
+
+/* Boot Magic salt key: Space */
+#define BOOTMAGIC_KEY_SALT      KC_FN6
+
+/* power control of key switch board */
+#define HHKB_POWER_SAVING
+
+/*
+ * Hardware Serial(UART)
+ *     Baud rate are calculated with round off(+0.5).
+ */
+#ifdef __AVR_ATmega32U4__
+    /* iom32u4.h has no definition of UCSR1D. copy from iom32u2.h */
+    #define UCSR1D _SFR_MEM8(0xCB)
+    #define RTSEN 0
+    #define CTSEN 1
+
+    #define SERIAL_UART_BAUD        115200
+    #define SERIAL_UART_DATA        UDR1
+    #define SERIAL_UART_UBRR        ((F_CPU/(16.0*SERIAL_UART_BAUD)-1+0.5))
+    #define SERIAL_UART_RXD_VECT    USART1_RX_vect
+    #define SERIAL_UART_TXD_READY   (UCSR1A&(1<<UDRE1))
+    #define SERIAL_UART_INIT()      do { \
+        UBRR1L = (uint8_t) SERIAL_UART_UBRR;       /* baud rate */ \
+        UBRR1H = ((uint16_t)SERIAL_UART_UBRR>>8);  /* baud rate */ \
+        UCSR1B |= (1<<RXCIE1) | (1<<RXEN1); /* RX interrupt, RX: enable */ \
+        UCSR1B |= (0<<TXCIE1) | (1<<TXEN1); /* TX interrupt, TX: enable */ \
+        UCSR1C |= (0<<UPM11) | (0<<UPM10);  /* parity: none(00), even(01), odd(11) */ \
+        UCSR1D |= (0<<RTSEN) | (0<<CTSEN);  /* RTS, CTS(no flow control by hardware) */ \
+        DDRD |= (1<<5); PORTD &= ~(1<<5);   /* RTS for flow control by firmware */ \
+        sei(); \
+    } while(0)
+    #define SERIAL_UART_RTS_LO()    do { PORTD &= ~(1<<5); } while (0)
+    #define SERIAL_UART_RTS_HI()    do { PORTD |=  (1<<5); } while (0)
+#else
+    #error "USART configuration is needed."
+#endif
+
+
+/* for debug */
+#define SUART_OUT_PORT  PORTD
+#define SUART_OUT_BIT   0
+#define SUART_IN_PIN    PIND
+#define SUART_IN_BIT    1
+
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif
diff --git a/keyboard/hhkb/hhkb_avr.h b/keyboard/hhkb/hhkb_avr.h
index b7bd507b5d..7ea6322c73 100644
--- a/keyboard/hhkb/hhkb_avr.h
+++ b/keyboard/hhkb/hhkb_avr.h
@@ -41,17 +41,32 @@ static inline void KEY_UNABLE(void) { (PORTB |=  (1<<6)); }
 static inline bool KEY_STATE(void) { return (PIND & (1<<7)); }
 static inline void KEY_PREV_ON(void) { (PORTB |=  (1<<7)); }
 static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); }
+#ifdef HHKB_POWER_SAVING
+static inline void KEY_POWER_ON(void) {
+    DDRB = 0xFF; PORTB = 0x40;          // change pins output
+    DDRD |= (1<<4); PORTD |= (1<<4);    // MOS FET switch on
+    /* Without this wait you will miss or get false key events. */
+    _delay_ms(5);                       // wait for powering up
+}
+static inline void KEY_POWER_OFF(void) {
+    /* input with pull-up consumes less than without it when pin is open. */
+    DDRB = 0x00; PORTB = 0xFF;          // change pins input with pull-up
+    DDRD |= (1<<4); PORTD &= ~(1<<4);   // MOS FET switch off
+}
+static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); }
+#else
 static inline void KEY_POWER_ON(void) {}
 static inline void KEY_POWER_OFF(void) {}
+static inline bool KEY_POWER_STATE(void) { return true; }
+#endif
 static inline void KEY_INIT(void)
 {
+    /* row,col,prev: output */
     DDRB  = 0xFF;
-    PORTB = 0x00;
+    PORTB = 0x40;   // unable
+    /* key: input with pull-up */
     DDRD  &= ~0x80;
-    PORTD |= 0x80;
-    /* keyswitch board power on */
-    DDRD  |=  (1<<4);
-    PORTD |=  (1<<4);
+    PORTD |=  0x80;
 #ifdef HHKB_JP
     /* row extention for HHKB JP */
     DDRC  |= (1<<6|1<<7);
@@ -59,6 +74,8 @@ static inline void KEY_INIT(void)
 #endif
     KEY_UNABLE();
     KEY_PREV_OFF();
+
+    KEY_POWER_OFF();
 }
 static inline void KEY_SELECT(uint8_t ROW, uint8_t COL)
 {
@@ -98,6 +115,7 @@ static inline void KEY_SELECT(uint8_t ROW, uint8_t COL)
 #define KEY_PREV_OFF()          (PORTE &= ~(1<<7))
 #define KEY_POWER_ON()
 #define KEY_POWER_OFF()
+#define KEY_POWER_STATE()       true
 
 
 #else
diff --git a/keyboard/hhkb/matrix.c b/keyboard/hhkb/matrix.c
index b0af4baa52..fb96997944 100644
--- a/keyboard/hhkb/matrix.c
+++ b/keyboard/hhkb/matrix.c
@@ -27,8 +27,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "timer.h"
 #include "matrix.h"
 #include "hhkb_avr.h"
+#include <avr/wdt.h>
+#include "suspend.h"
+#include "lufa.h"
 
 
+// matrix power saving
+#define MATRIX_POWER_SAVE       10000
+static uint32_t matrix_last_modified = 0;
+
 // matrix state buffer(1:on, 0:off)
 static matrix_row_t *matrix;
 static matrix_row_t *matrix_prev;
@@ -72,7 +79,8 @@ uint8_t matrix_scan(void)
     matrix_prev = matrix;
     matrix = tmp;
 
-    KEY_POWER_ON();
+    // power on
+    if (!KEY_POWER_STATE()) KEY_POWER_ON();
     for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
         for (uint8_t col = 0; col < MATRIX_COLS; col++) {
             KEY_SELECT(row, col);
@@ -126,8 +134,16 @@ uint8_t matrix_scan(void)
             // This takes 25us or more to make sure KEY_STATE returns to idle state.
             _delay_us(75);
         }
+        if (matrix[row] ^ matrix_prev[row]) matrix_last_modified = timer_read32();
+    }
+    // power off
+    if (KEY_POWER_STATE() &&
+            (USB_DeviceState == DEVICE_STATE_Suspended ||
+             USB_DeviceState == DEVICE_STATE_Unattached ) &&
+            timer_elapsed32(matrix_last_modified) > MATRIX_POWER_SAVE) {
+        KEY_POWER_OFF();
+        suspend_power_down();
     }
-    KEY_POWER_OFF();
     return 1;
 }
 
@@ -165,3 +181,10 @@ void matrix_print(void)
         xprintf("%02X: %08b\n", row, bitrev(matrix_get_row(row)));
     }
 }
+
+void matrix_power_up(void) {
+    KEY_POWER_ON();
+}
+void matrix_power_down(void) {
+    KEY_POWER_OFF();
+}
diff --git a/keyboard/hhkb/Makefile.iwrap b/keyboard/hhkb/not_supported/Makefile.iwrap
index 2d9d82c481..2d9d82c481 100644
--- a/keyboard/hhkb/Makefile.iwrap
+++ b/keyboard/hhkb/not_supported/Makefile.iwrap
diff --git a/keyboard/hhkb/Makefile.vusb b/keyboard/hhkb/not_supported/Makefile.vusb
index 4343b210d9..4343b210d9 100644
--- a/keyboard/hhkb/Makefile.vusb
+++ b/keyboard/hhkb/not_supported/Makefile.vusb
diff --git a/keyboard/hhkb/config_iwrap.h b/keyboard/hhkb/not_supported/config_iwrap.h
index 747c755132..747c755132 100644
--- a/keyboard/hhkb/config_iwrap.h
+++ b/keyboard/hhkb/not_supported/config_iwrap.h
diff --git a/keyboard/hhkb/config_vusb.h b/keyboard/hhkb/not_supported/config_vusb.h
index 44f7acd6cd..44f7acd6cd 100644
--- a/keyboard/hhkb/config_vusb.h
+++ b/keyboard/hhkb/not_supported/config_vusb.h
diff --git a/keyboard/hhkb/iwrap.txt b/keyboard/hhkb/not_supported/iwrap.txt
index 20a2420a0b..20a2420a0b 100644
--- a/keyboard/hhkb/iwrap.txt
+++ b/keyboard/hhkb/not_supported/iwrap.txt
diff --git a/keyboard/hhkb/usbconfig.h b/keyboard/hhkb/not_supported/usbconfig.h
index c3aad34bef..c3aad34bef 100644
--- a/keyboard/hhkb/usbconfig.h
+++ b/keyboard/hhkb/not_supported/usbconfig.h
diff --git a/keyboard/hhkb/rn42.mk b/keyboard/hhkb/rn42.mk
new file mode 100644
index 0000000000..fd6f7db1a8
--- /dev/null
+++ b/keyboard/hhkb/rn42.mk
@@ -0,0 +1,12 @@
+RN42_DIR = rn42
+
+SRC +=  serial_uart.c \
+	rn42/suart.S \
+	rn42/rn42.c \
+	rn42/rn42_task.c \
+	rn42/battery.c \
+	rn42/main.c
+
+OPT_DEFS += -DPROTOCOL_RN42
+
+VPATH += $(RN42_DIR)
diff --git a/keyboard/hhkb/rn42/MEMO.txt b/keyboard/hhkb/rn42/MEMO.txt
new file mode 100644
index 0000000000..f772c4cb53
--- /dev/null
+++ b/keyboard/hhkb/rn42/MEMO.txt
@@ -0,0 +1,255 @@
+Memo of deveopment
+==================
+just memo, NOT WORTH READING
+
+Bug:
+- Factory Reset PIO4 doesn't work
+    - the reason is unclear - 12/08 NOT LOOK INTO ANY MORE
+    - WORKAROUND: use serial pins(3.3V, GND, RX and TX)
+        - SF,1 and R,1 to set factory defalult
+    
+
+Todo:
+- LED cover and switch knob and new Slide Switch
+- RN42 auto configuration
+    - configure the module as HID device every time powering up
+    - this'll reduce work load of assembly
+
+- move rn42 to protocol directory when it becomes reusable stack
+
+- sendchar() in lufa.c no buffer
+    - no buffering. character lost can be caused.
+- LUFA sendchar should be buffered and serial_uart.c buffur size is too large(256).
+
+- BT operations
+    - disconnect
+    - new connection
+    - remove connection
+
+- sendchar() in lufa.c block loop   - DONE 11/29
+    - block loop when powered with AC adapter
+    - FrameNumber is not updated when adapter powered
+
+Improving:
+- ADC resolution
+    AVR120
+    AVR32138
+    - Enhancing ADC resolution by oversampling
+        AVR121  http://www.atmel.com/images/doc8003.pdf
+    - disable digital input buffer DIDR(7.8.6)
+
+Design:
+- suspend.h - DONE 11/26
+    - remove argument from suspend_power_down() for backward compatitibility
+- remove MCU dependent power saving code from core/keyboard - DONE 11/23
+    - it should be located in project matrix.c
+- HHKB matrix.c needs matrix_prev?
+    - is_modified() is obsolete now. really needs?
+- ADC: removing AREF capacitor C10
+    - seems to be better while usb powered
+    - still bad while battery powered
+    http://electronics.stackexchange.com/questions/105849/avcc-and-capacitor-using-adc
+- ADC: smaller resistors for voltage dividor
+    - 1K + 1K: not improved. - 11/27
+
+
+LUFA:
+USB connection check: state of USB deivce
+- USB_DeviceState:
+    USB_Deivce_State_t { Unattached, Powered, Default, Addressed, Configured*, Suspended* }
+    Unattached: unpluged
+    Powered:    pluged with power adapter
+    Default:    enumerate process bigin
+    Addressed:  addressed
+    Configured: enumerated
+    Suspended:  suspended
+
+- USB_IsInitialized: state of LUFA core setup
+    becomes true in USB_Init()  USBController_AVR8.c
+    becomes false in USB_Disable()  USBController_AVR8.c
+- USB_VBUS_GetStatus(): state of VBUS(power/connection)
+- USB_Disable() detaches, disables all interrupts, controller, PLL, regulater.
+
+- When connect to power adapter
+    - event happened: CW or CSW or C or DDC
+    - USB state: not configured
+
+- USB evnets
+    - USB connect: CSWRWRW
+    - USB connect but fail to enumeration: CWRWRWRWS
+    - USB disconnect: D
+    - Power adapter connect: CW, CSW, C
+    - Power adapter disconnect: D
+
+
+Power saving:
+- Pro2 current consumption
+    - active: 138.2mA(no device on Hub)
+    - suspended: 30.9mA(WakeUp enabled DIPSW6)
+    - suspended: 0mA->46.0mA(WakeUp disabled DIPSW6)
+- Pro current consumption
+    - active: 54.0mA
+    - suspended: 40.5mA(WakeUp enabled DIPSW6)
+    - suspended: 0.3mA(WakeUp disabled DIPSW6)
+
+- RN42 3.3V
+    - disconnected(Idle): 5mA (config mode)
+    - connected(Active):
+        SW,0000:  23-26mA
+        SW,0010:  27-29mA worse than 0000 for unknown reason
+        SW,0020:  17-19mA mouse NG
+        SW,0030:  13-16mA laggy mouse NG
+        SW,0050:  10-13mA laggy mouse NG
+
+- matrix power saving
+    - power saving while externally powered and not while unpluged
+- confirm suspend mode lufa.c: matrix_power_*, suspend_wakeup_condition
+- 8MHz clock
+- When not connected in a few minutes get into deep sleep to save battery life
+- CTS is needed for waking up from deep sleep? How deep sleep is activated?
+- firmware controlled 3.3V DC converter to switch on/off BT module
+- sleep MCU and BT module(keyboard is not used)
+- deep sleep MCU and BT module(keyboard is not used for long time)
+- deep sleep MCU and turn off BT module(keyboard is not used and not connected)
+- Battery ADC; switching, high resistance
+    - switching gnd end of divider with PF4
+    - high resistor 100K/1M?
+        capacitor   10nF
+        http://www.eevblog.com/forum/beginners/measuring-battery-voltage-without-consuming-current/
+- During USB suspend change clock source to internal RC from external Xtal(6.8)
+- FRZCLK: you can freeze clock for power saving. still WAKEUPI and VBUSTI interrupts are available while freezing.(21.7.3)
+- Suspend: Clear Suspend Bit, Freeze clock, disable PLL, MCU sleep(21.13)
+- Voltage reference(8.1.1)
+    - to reduce power consumption while power down mode
+- unset ADEN before sleep(24.7)
+
+
+
+
+
+
+
+Lipo
+----
+850mA lasts around 9 hours(07/28)
+
+Sparkfun Polymer Lithium Ion Battery 850mAh:
+https://www.sparkfun.com/products/341
+Lipo Cell spec:
+https://www.sparkfun.com/datasheets/Batteries/063048%20Li-polymer.pdf
+Protection spec:
+http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/BatteryProtection.pdf
+                                min     typical max
+    over-charge                 4.255   4.280   4.305
+    over-charge discover?       4.030   4.080   4.130
+    over-discharge              2.827   2.900   2.973
+    over-discharge discover     3.022   3.100   3.178
+
+ADC voltage monitor:    voltage divider 10K+10K(0.5)
+                        ADC=V*0.5/2.56*1024
+
+    V       ADC
+    ------------------
+    4.20    0x347(839)
+    3.10    0x26b(619)
+
+
+
+
+TROUBLE SHOOT
+-------------
+07/16   After fix of voltage dividor on GPIO6, had a trouble that it could not send a char to BT module, though could receive.
+        Found R8 had wrong 1K resistor and changed to 10K, after that it can send to the module again. Not sure how it had sent with the wrong 1K before.
+
+07/18   On Linux, had an USB related trouble; keyobard or console didn't work for some reason. Changing PID cured this problem. Very annoying, took very long time before resolved it.
+
+12/07   rn42_rts() read 1 every time. R12 broke in open mode(no coductive), idk why, too much heat with soldering? and PF1 pin was not soldered.
+        It resolved with resoldering PF1 and new resistor on R12.
+
+
+
+
+Done:
+- low battery alert(solid light) 09/04
+- *** Rev.E BT test *** - DONE
+    - with MCP73832, new Schottky, tantalum caps - DONE 12/07
+        * MCP73832 doesn't leak from Vcc pin when unpluged and battery powered
+            34mV vs 2.07V(MCP73831) at Vcc pin
+            MCP73832 doesn't need revese protection diode D5
+        * PMEG2010ER is very low VF while reverse current/voltage is high
+            VF=0.96 vs 1.98(RB160M-30TR)with Fluke 175
+            Anode of D11 is 680mV vs 20mV(RB160M-30TR)
+            780mV is still low < 1.4V VBUS plugin detection(21.11)
+                this doesn't cause false VBUS detect
+                and 780mV on MCP73832 Vcc pin is also no problem.
+            D5 can be removed.
+    - ADC divider switching - DONE 12/07
+        * Drain and Source of Q4 Pch was reversed wrongly on Rev.E.
+
+    - reverse current from Lipo charger - DONE 12/07
+        * MCP73832 has no recverse current from Vcc pin unlike MCP73831
+
+
+- Rev.F design - DONE
+    - current measure point - DONE 12/08
+    - change value of cap 68->47    - DONE 12/08
+    - PPTC land pattern: no solder jumper, use 0Ohm resistor instead - CANCEL 12/08
+    - Q4 Pch FET: wrong Drain and Source - DONE 12/08
+    - D5 can be removed.    - DONE 12/08
+
+
+
+- BT_INDICATOR LED turns on wrongly when touching line or pin.  -- pull-up enabled on PF6/GPIO2 08/30
+- Lipo charger configuration: fast charge time:  USB charger spec? -- used 2kohm
+- use LED of charger to alarm low battery. LED should be powered directly from Lipo? - cancel; powered from VUSB
+- Use RTS in serial_uart.c to resolve missing chars from help message of RN-42 - done
+- CTS/RTS lines are needed? just connect in loop back if no flow control is needed. - done
+- add IO pin to charger status CHRG; LED control(low) and detect charge status(input HiZ) 07.24
+- LINKED: add trace on PIO2 to PF6   07.24
+- Lipo voltage ADC sensing
+- Lipo charger MCP73831: needs capacitor 4.7uF *2
+- USB connection check - 07.01
+- BT on/off check: whether RX line is pulled up? - checking RTS 07.01
+- USB/BT switching  BT is on -> BT, BT is off -> USB - 07.01
+- Under voltage lock out UVLO for protection of Lipo - Lipo has discharge protection at 3.100V    07.01
+- Power saving: HHKB scan, BT radio control - 9h with 850mAh, this is enough   07.01
+- Power selector doesn't work; Q4 MOSFET leaks from Lipo to USB power line. -- use Schottky instead 07/04
+
+- wrongly suspended when powered from adapter without USB connection - DONE
+    - suspend event may occur when plug into adapter
+    - and never wake until conected to real USB line
+    - without debug print via USB no problem; CSW(wake just after suspend as real USB line)
+    - seems like USB print causes this problem after suspended
+
+- lose USB connection during power-down mode - DONE
+    - USB initialize code in main() causes this - WRONG
+    - Do not power-down during USB connection is active - DONE 11/11
+        (USB_DeviceState == USB_DEVICE_Configured) is used to check USB connection
+        matrix_power_down() matrix.c - 11/23
+
+- with Nexus5 keyboard and mouse are very laggy.
+    Not confirmed. 01/15
+
+- switch BT host connections    - CANCEL 01/15
+    - switch next connection
+        cannot switch connection with version 6.15 at least
+
+- When given power only from wall wart adapter  - DONE? not confirmed 01/15
+    - it sleeps. it should not sleep
+    - Configured state without USB connection?
+
+- timer is slow while power down - DONE 11/26
+    - time out interrupt is lost while power down?
+    - interrupt of watchdog timer compensates timer counter(avr/suspend.c)
+
+- repeated CHARGING/FULL_CHARGED    - No longer problem 01/15
+    - In LTC sharp pulses are observed.
+    - MCP has no pulse but still has a problem.
+    - needs more wait before read pin state? - NO
+
+- USB plug-in fails while BT        - No longer problem 01/15
+    - it ends in suspend state
+    - maybe, not responsive to host enumeration process due to power-down.
+    - matrix_power_down() only when state is unattached - 11/26
+        - need to observe a while
+
diff --git a/keyboard/hhkb/rn42/PowerSave.txt b/keyboard/hhkb/rn42/PowerSave.txt
new file mode 100644
index 0000000000..8aea1c6dd2
--- /dev/null
+++ b/keyboard/hhkb/rn42/PowerSave.txt
@@ -0,0 +1,76 @@
+Power Saving
+============
+
+
+MCU+HHKB Power Comsumption
+--------------------------
+Battery drive:
+    idle    18.9mA
+    active  35.8mA
+
+USB powered:
+    40.0mA
+
+
+HHKB key switch power control
+-----------------------------
+MOS FET Nch: BSS138 or IRLML6344T, either works and no apparent difference.
+Normally on(pull-up) or off(pull-down)? interms of power saving it prefers pull-down?
+
+Pull-down will be better for power saving, normally off.
+
+
+
+Used Timer
+----------
+
+8MHz clock
+----------
+1) 16MHz xtal with system prescaler div2: F_CPU=8MHz, F_USB=16MHz
+2) 8MHz xtal with div1: F_CPU=8MHz, F_USB=8MHz
+Hardware USART doesn't work at 115200bps with 8MHz(F_CPU).
+
+workaround:
+a) use Sotwre serial for communcation with RN-42
+b) reduce baud of RN-42 to lower rate;(factory default is 115200bps)
+10/03
+
+
+
+Slave mode
+----------
+Discovery/Inquire
+Connect/Page
+
+SI,0012
+SJ,0012
+InqWindw=0100
+PagWindw=0100
+
+
+Sniff mode
+----------
+0.625ms * <hex>
+SW,0320     Very sluggish. Type is not lost but very slow to register.
+SW,0160     Still sluggish. may transposed? can type but ...
+            Mouse point move intermittently
+SW,0020     feel a bit late like stumble(20ms)
+SW,0010     feel no latency(10ms)
+
+
+Deep sleep
+----------
+SW,8010
+
+
+TX power
+--------
+SY,fff4
+
+
+IO pins
+-------
+S%,1000         status led and connection control don't work
+                GPIO5: status LED
+                GPIO6: Connection control
+                GPIO2: linked status
diff --git a/keyboard/hhkb/rn42/RN42.txt b/keyboard/hhkb/rn42/RN42.txt
new file mode 100644
index 0000000000..ace30da4ed
--- /dev/null
+++ b/keyboard/hhkb/rn42/RN42.txt
@@ -0,0 +1,362 @@
+RN-42 Bluetooth Module Support
+==============================
+Bluetooth controller board works with HHKB Pro2, JP, Type-S and Type-S JP and it supports both USB and Bluetooth as keyboard output protocol. Bluetooth module Roving Networks/Microchip RN-42 is installed on the board.
+
+
+Limitations:
+- short battery life
+- connection switching
+    the module always connects to the last linked device. Remote address setting does not work as expected.
+- HHKB JP requires case modification for power switch and LEDs.
+    without switch power controlled by MCU? Probably using 3.3V regulator enable pin power of RN-42 can be controlled.
+- Wiress certification of RN-42
+    Japan, Korea, Taiwan, Europe, FCC, Canada
+    http://www.microchip.com/wwwproducts/Devices.aspx?product=RN42
+
+NOTE:
+- Lipo battery is not included. Cannot ship it from Japan due to regulations.
+
+Bugs:
+
+Todos:
+
+
+
+
+
+LED Status
+----------
+Configuring                     10 times per sec
+Startup/configuration timer     2 times per sec
+Discoverable/Inquiring/Idle     once per sec
+Connected                       solid on
+
+
+RN-42 Magic Command
+--------------------
+Magic key combination is 'LShift+RShift' by default in case of HHKB.
+
+Here is help.
+
+    ----- Bluetooth RN-42 Help -----
+    i:       RN-42 info
+    b:       battery voltage
+    Del:     enter/exit RN-42 config mode
+    Slck:    RN-42 initialize
+    p:       pairing
+    u:       toggle Force USB mode
+
+    RN-42 info:             displays information of the module on console.
+    battery voltage:        displays current voltage of battery and uptime.
+    RN-42 initialize:       does factory reset and configures RN-42
+    pairing:                enters Pairing mode.
+    toggle Force USB mode:  switch between USB and Bluetooth
+
+
+RN-42 Config mode
+-----------------
+You can tune/operate RN-42 yourself with config(command) mode.
+
+1. hook up USB cable
+2. run `hid_listen` command  in console
+3. turn on Bluetooth switch
+4. press LShift+RShift+Delete(Fn+~) you will see output like followings:
+
+    Entering config mode ...
+    CMD
+    v
+    Ver 6.15 04/26/2013
+    (c) Roving Networks
+
+5. do config with RN-42 commands. See documentations of RN-42.
+6. to exit also press LShift+RShift+Delete(Fn+~)
+
+    Exiting config mode ...
+    ---
+    END
+
+
+RN-42 Initial Configuration
+---------------------------
+RN-42 is configured as SPP device at factory reset, you need to configure it as HID device. This is needed just once first time.
+
+1. hook up USB cable
+2. run `hid_listen` command  in console
+3. turn on Bluetooth switch
+4. press LShift+RShift+ScrLk(Fn+O) you will see output like followings:
+
+    Entering config mode ...
+    CMD
+    Ver