7 - When not connected in a few minuts get into deep sleep to save battery life
8 - CTS is needed for waking up from deep sleep? How deep sleep is activated?
11 - Status LED; connecting, liked, low battery, sleeping, deep sleeping
12 - Battry voltage display by command; like full(solid), medium(blink), low(flash)
13 - move rn42 to protocol directory when it becomes reusable stack
14 - LUFA sendchar should be buffered and serial_uart.c buffur size is too large(256).
17 - Factroy reset doesn't work; need to **test again** 10K pull-up is too high?
18 - Lipo voltage ADC value is not stabilized
19 - DCDC converter: squeaky inducter; try other inductors
21 - Keymap layer bug: during space is pressed(mousekey) press Fn(HHKB) then release space before Fn, in result HHKB layer is locked(toggled) unintentionally.
25 - Lipo charger configuration: fast charge time: USB charger spec? -- used 2kohm
26 - use LED of charger to alarm low battery. LED should be powered directly from Lipo? - cancel; powered from VUSB
27 - Use RTS in serial_uart.c to resolve missing chars from help message of RN-42 - done
28 - CTS/RTS lines are needed? just connect in loop back if no flow control is needed. - done
29 - add IO pin to charger status CHRG; LED control(low) and detect charge status(input HiZ) 07.24
30 - LINKED: add trace on PIO2 to PF6 07.24
31 - Lipo voltage ADC sensing
32 - Lipo charger MCP73831: needs capacitor 4.7uF *2
33 - USB connection check - 07.01
34 - BT on/off check: whether RX line is pulled up? - checking RTS 07.01
35 - USB/BT switching BT is on -> BT, BT is off -> USB - 07.01
36 - Under voltage lock out UVLO for protection of Lipo - Lipo has discharge protection at 3.100V 07.01
37 - Power saving: HHKB scan, BT radio control - 9h with 850mAh, this is enough 07.01
38 - Power selector doesn't work; Q4 MOSFET leaks from Lipo to USB power line. -- use Schottky instead 07/04
44 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.
45 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.
47 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.
53 850mA lasts around 9 hours(07/28)
55 Sparkfun Polymer Lithium Ion Battery 850mAh:
56 https://www.sparkfun.com/products/341
58 https://www.sparkfun.com/datasheets/Batteries/063048%20Li-polymer.pdf
60 http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/BatteryProtection.pdf
62 over-charge 4.255 4.280 4.305
63 over-charge discover? 4.030 4.080 4.130
64 over-discharge 2.827 2.900 2.973
65 over-discharge discover 3.022 3.100 3.178
67 ADC voltage monitor: voltage divider 10K+10K(0.5)
90 ***ADVANCED Settings***
91 SrvName= keyboard/mouse
117 Serial line: 115200bps, 8bit, 1-stopbit, non-parity, no flow control
118 SSP: 115200bps, 8bit, 1-stopbit, non-parity, no flow control(via Bluetooth)
120 To enter command mode disconnect the module from host and type '$$$'.(you will see 'CMD')
121 To exit type '---'(you will see 'END') and '+' to get local echo.
127 S-,tmkBT // Device name
128 SS,keyboard/mouse // service name
129 SM,4 // Auto Connect DTR mode
130 SW,8010 // Sniff enable 0x10*0.625ms=10ms; 50ms is laggish and not much power save
132 SH,003C // HID register
133 SY,0004 // Transmit power
139 SC,0000 // COD: 000005C0 (see HID spec/Bluegiga doc)
140 SD,05C0 // bit 12-8 7 6 5-0
142 // peripheral pointing keybaord joystick, gamepad, ...
143 SM,6 // Pairing mode: auto connect
144 SM,4 // Master mode: Connection can be controled with GPIO6
158 Keyboard can be used with iPhone, but mouse cannot.
159 To operate iOS with keyboard is not so useful, though.
160 There may be iOS specific scancodes?
168 10 0000 0000(0200) default
169 00 0011 1000(0038) Combo
170 || | | |\_\____ number of paired devices to which the module can reconnect
171 || | | \_______ send out reports over UART (0xFF <len> <data>)
172 || \__\_________ descriptor type
173 |\______________ toggle virtual keyboard on iOS when first connected
174 \_______________ Force HID mode if GPIO11 is high on power-up
185 Out report - Indicator
186 ----------------------
187 0xFE 0x02 0x01 <LED_state>
192 Configuring 10 times per sec
193 Startup/configuration timer 2 times per sec
194 Discoverable/Inquiring/Idle once per sec
200 First, host initiates pairing process and once it is done, auto connect will work thereafter.
202 SM,4 Auto Connect DTR Mode uses GPIO6 to make and break connection(Mode =DTR)
203 confirm: auto connect works and control connection with GPIO6
204 SM,5 Auto Connect ANY Mode (Mode =ANY)
205 each time GPIO is set, make inquiry and connect to the first found device
206 SM,6 automatically reconnect(Mode =Pair)
207 confirm: auto connect works well but difficult to enter command mode.
212 The module enters fast data mode after 'remote configuration timer' window is passed from power on.
213 In this mode the module does not accept '$$$' to enter command mode.
217 Inquiry and Page window Idle or Active (3.1.1)
218 Downside: delay in discovery or connection time
219 SI, // set inquiry scan window(discovery) on/off duty?
220 SJ, // set page scan window(connection)
221 This reduces averaege power >20mA to 5mA(3mA in Sniff mode)
224 Sniff mode is disabled by default and radio is active continuously when connected.(25-30mA)
225 In Sniff mode the radio wakes up intermittently and sleeps in very low power mode.(2mA)
226 SW,<val> // set interval timer(*0.625ms) 0000-7FFF
228 Deep sleep Idle (3.1.2)
229 In this mode the module shuts down completly and only draws about 300uA. To enable this set the most signifant bit(0x8000) of Sniff interaval timer.
230 SW,8320 // deep sleep enable(interval=0x320*0.625=500ms)
231 In normal sleep the firmware is still running in idle mode, and wakes up about 20 times per second to check ports, update LEDs, etc. During deep sleep, the firmware actually stops runnig some tasks and the LEDs only update about once per second.
232 To wake from deep sleep there are three ways: (in worst case wake up takes 5ms)
233 *send a charactor to the UART(first charactor will be lost)
234 *toggle CTS low to high and wait 5ms
235 *wake automatically every slot time(<val>*0.625ms)
236 Once the radio is awake it stay active for exactly 1 second of inactivity and then sleeps again.
237 Downside: latency and data loss
239 Disable Output driver Idle or Active (3.1.3)
240 S%,1000 // set all GPIO pins(0-11) to inputs.
242 Lower Transmit Power Idle or Active (3.1.4)
243 SY,<hex> // transmit power setting(takes effect after a power cycle and reboot)
244 Downside: reducing effective range
247 Optimizig for Latency
248 ---------------------
249 By default the firmware is optimized for throughput.
250 SQ,16 // set latency bit
251 SQ,0 // unset latency bit
254 Configuration timer settings
255 ----------------------------
256 Remote configuration is used for the module to be configured with various commands over Bluetooth(SPP profile only?).
258 The module has remote configuration timer to allow remote configuration over Bluetooth after power up in Slave mode. In Master modes the remote configuration timer is set to 0(no remote configuration). (In Trigger Master mode the timer is used as an idle timer to break the connection after time expires with no charactors receive.)
259 ST,0 // no remote, no local when connected
260 ST,<1-252> // local and remote with timeout in seconds from power up
261 ST,253 // local only without timeout
262 ST,254 // remote only without timeout
263 ST,255 // local and remote without timeout
268 3.7.1.5 Note: To connect with Android phone the modules must wake up 11ms every 2.5seconds.
276 SP,<string> Pin code(alpahnumeric)
277 SQ,<mask> Special configuration(GPIO, discovery mode, low latency, reboot, UART)
278 SR,<hex> Store remote address
279 SR,Z Erase all address
280 SS,<string> Set service name(1-20)**
281 ST,<val> Remote configuration timer(Master:0, Slave:0-255, Triger:as idle timer)
282 SU,<val> UART baud rate
283 SW,<val> low-power sniff mode** deep sleep and wake up every 625us * <val>
284 SX,<0|1> bonding enable only acceps device that matches the stored address
285 SY,<hex> power setting**
286 SZ,<val> non-standard raw baud rate <val>=baud*0.004096
287 S~,<val> Profile 0:SPP, 5:APL, 6:HID
288 S-,<string> Device name -15 alphanumeric charactors
289 S?,<0|1> role switch enable
290 S$,<char> command mode char
291 $|,<hex> low-power connect mode deep sleep/active(discoverable and connectable) cycle
292 D display basic setting
293 E display extended setting
294 GB display the device's Bluetooth address
295 GF display Bluetooth address of connected device
296 GK show connection status
297 GR show remote address for reconnecting
299 G<char> show stored setting
300 + toggle local echo on/off
301 & show GPIO 3,4,6,7(DIP switch)
302 C connect to stored remote address
303 C,<address> connect last address
304 CFI connect and go into fast data mode
305 CFR connect and go into fast data mode
306 CT,<address>,<val> connect to the address and disconnect after val?
309 I,<time>,<cod> inquiry scan with <cod>
312 IS inquiry scan with 001F00
314 K, kill disconnects current connection
316 M show modem signlal status
317 O display other settings
318 P,<car> pass through?
319 Q quiet mode make the module not discoverable
320 Q,0 discoverable and connectable
321 Q,1 not discoverable and not connectable
322 Q,2 not discoverable and connectable
323 Q,? display current quiet mode
325 T,<0|1> pass received data while in command mode
326 U,<baud>,<parity> change UART setting tentatively
327 V display firmware version
328 W wake from quiet mode enable discovery and connection
329 Z deep sleep mode(<2mA)
336 SA,<3,0> - Authentication
337 SC,<hex> - Service Class
338 SD,<hex> - Device Class
340 SF,1 - Factory Defaults
342 SI,<hex> - Inquiry Scan Window
343 SJ,<hex> - Page Scan Window
345 SM,<0-5> - Mode (0=slav,1=mstr,2=trig,3=auto,4=DTR,5=Any)
347 SO,<text> - conn/discon Status
349 SR,<adr> - Remote Address
350 SS,<text> - Service Name
351 ST,<num> - Config Timer
353 SW,<hex> - Sniff Rate
356 SZ,<num> - Raw Baudrate
357 S~,<0-6> - Profile (0=SPP,1=DCE,2=DTE,3=MDM,4=D&S,6=HID
358 S?,<0-1> - role switch
359 S$,<char> - CMD mode char
360 S@,<hex> - io port dir
361 S&,<hex> - io port val
362 S%,<hex> - io boot dir
363 S^,<hex> - io boot val
364 S*,<hex> - pio(8-11) set
365 S|,<hex> - low power timers
367 S=,<hex> - Key mapper
368 S:,<num> - sleep timer
371 E - Extended Settings
372 G<X> - Stored setting
374 GF - BT Address of Last Connection
381 I,<time>,<cod> - Device Scan Inquiry
383 K, - Kill (disconnect)
384 L, - toggle local echo
386 Q - Quiet (no discovery)
388 T,<0,1> - send data in CMD mode
389 U,<rate>,<E,O,N> - Temp Uart Change