tmk
9 years ago
1 changed files with 46 additions and 22 deletions
+ 46
- 22
keyboard/hhkb_rn42/MEMO.txt
View File
| @@ -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> | |||