add hhkb bluetooth functionality (rn42) (#2693)
* add hhkb bluetooth functionality (rn42) pretty much straight from tmk some minor changes to make things work * hhkb jp personal keymap * Revert "hhkb jp personal keymap" This reverts commit 886713d8bb98572f03110f285706a8140a083892.
This commit is contained in:
Enochen
Drashna Jaelre
262
keyboards/hhkb/rn42/MEMO.txt
Normal file
262
keyboards/hhkb/rn42/MEMO.txt
Normal file
@@ -0,0 +1,262 @@
|
||||
Memo of deveopment
|
||||
==================
|
||||
just memo, NOT WORTH READING
|
||||
|
||||
2015/11/24
|
||||
JP Bluetooth:
|
||||
RN-42 cannot send Japanese keys like; henkan, mu-henkan and kana, JPY and RO.
|
||||
It seems HID usage more than 0x65 cannot be send with the module.
|
||||
http://shiki.esrille.com/2014/07/bluetoothnisse.html
|
||||
|
||||
|
||||
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- is_modified() is obsolete now.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; keyboard 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
|
||||
|
||||
Reference in New Issue
Block a user