Update MEMO.txt
This commit is contained in:
tmk
parent
e4b9541041
commit
17f22da3cf
|
|
@ -1,27 +1,35 @@
|
|||
Roving RN-42
|
||||
============
|
||||
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.
|
||||
|
||||
|
||||
|
||||
TODO
|
||||
----
|
||||
Power saving:
|
||||
- When not connected in a few minuts get into deep sleep to save battery life
|
||||
- CTS is needed for waking up from deep sleep? How deep sleep is activated?
|
||||
|
||||
Improving:
|
||||
- Status LED; connecting, liked, low battery, sleeping, deep sleeping
|
||||
- Battry voltage display by command; like full(solid), medium(blink), low(flash)
|
||||
- move rn42 to protocol directory when it becomes reusable stack
|
||||
- LUFA sendchar should be buffered and serial_uart.c buffur size is too large(256).
|
||||
- Factroy reset doesn't work; need to test again. 10K pull-up is too high?
|
||||
- Lipo voltage ADC sensing
|
||||
- Lipo charger configuration: fast charge time: USB charger spec?
|
||||
- Low voltage alarm: LED indcates voltage of Lipo
|
||||
- CTS/RTS lines are needed? just connect in loop back if no flow control is needed.
|
||||
- CTS is needed for waking up from deep sleep?
|
||||
- Serial API callback when data are available/received(and when send buffer is available)
|
||||
- Serial API instance several serial ports can be used
|
||||
- DCDC converter: squeaky inducter with onsemi NCP1402
|
||||
- Lipo charger MCP73831: needs capacitor 4.7uF *2
|
||||
|
||||
Testing:
|
||||
- Factroy reset doesn't work; need to **test again** 10K pull-up is too high?
|
||||
- Lipo voltage ADC value is not stabilized
|
||||
- DCDC converter: squeaky inducter; try other inductors
|
||||
|
||||
- Keymap layer bug: during space is pressed(mousekey) press Fn(HHKB) then release space before Fn, in result HHKB layer is locked(toggled) unintentionally.
|
||||
|
||||
|
||||
DONE:
|
||||
- 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
|
||||
|
|
@ -30,22 +38,35 @@ DONE:
|
|||
- Power selector doesn't work; Q4 MOSFET leaks from Lipo to USB power line. -- use Schottky instead 07/04
|
||||
|
||||
|
||||
|
||||
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.
|
||||
|
||||
|
||||
|
||||
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
|
||||
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
|
||||
ADC=V*0.5/2.56*1024
|
||||
|
||||
V ADC
|
||||
------------------
|
||||
4.20 0x347(839)
|
||||
|
|
@ -134,7 +155,9 @@ R,1 reboot
|
|||
|
||||
Apple iOS
|
||||
---------
|
||||
Cannot supported without apple iAP authentication chip.
|
||||
Keyboard can be used with iPhone, but mouse cannot.
|
||||
To operate iOS with keyboard is not so useful, though.
|
||||
There may be iOS specific scancodes?
|
||||
|
||||
|
||||
HID flag register
|
||||
|
|
@ -158,6 +181,7 @@ GH
|
|||
0100: Joystick
|
||||
1xxx: reserved
|
||||
|
||||
|
||||
Out report - Indicator
|
||||
----------------------
|
||||
0xFE 0x02 0x01 <LED_state>
|
||||
|
|
|
|||
Loading…
Reference in New Issue