keyboard/hhkb/rn42/RN42.txt

   1 RN-42 Bluetooth Module Support
   2 ==============================
   3 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.
   4
   5
   6 Limitations:
   7 - short battery life
   8 - connection switching
   9     the module always connects to the last linked device. Remote address setting does not work as expected.
  10 - HHKB JP requires case modification for power switch and LEDs.
  11     without switch power controlled by MCU? Probably using 3.3V regulator enable pin power of RN-42 can be controlled.
  12 - Wiress certification of RN-42
  13     Japan, Korea, Taiwan, Europe, FCC, Canada
  14     http://www.microchip.com/wwwproducts/Devices.aspx?product=RN42
  15
  16 NOTE:
  17 - Lipo battery is not included. Cannot ship it from Japan due to regulations.
  18
  19 Bugs:
  20
  21 Todos:
  22
  23
  24
  25
  26
  27 LED Status
  28 ----------
  29 Configuring                     10 times per sec
  30 Startup/configuration timer     2 times per sec
  31 Discoverable/Inquiring/Idle     once per sec
  32 Connected                       solid on
  33
  34
  35 RN-42 Magic Command
  36 --------------------
  37 Magic key combination is 'LShift+RShift' by default in case of HHKB.
  38
  39 Here is help.
  40
  41     ----- Bluetooth RN-42 Help -----
  42     i:       RN-42 info
  43     b:       battery voltage
  44     Del:     enter/exit RN-42 config mode
  45     Slck:    RN-42 initialize
  46     p:       pairing
  47     u:       toggle Force USB mode
  48
  49     RN-42 info:             displays information of the module on console.
  50     battery voltage:        displays current voltage of battery and uptime.
  51     RN-42 initialize:       does factory reset and configures RN-42
  52     pairing:                enters Pairing mode.
  53     toggle Force USB mode:  switch between USB and Bluetooth
  54
  55
  56 RN-42 Config mode
  57 -----------------
  58 You can tune/operate RN-42 yourself with config(command) mode.
  59
  60 1. hook up USB cable
  61 2. run `hid_listen` command  in console
  62 3. turn on Bluetooth switch
  63 4. press LShift+RShift+Delete(Fn+~) you will see output like followings:
  64
  65     Entering config mode ...
  66     CMD
  67     v
  68     Ver 6.15 04/26/2013
  69     (c) Roving Networks
  70
  71 5. do config with RN-42 commands. See documentations of RN-42.
  72 6. to exit also press LShift+RShift+Delete(Fn+~)
  73
  74     Exiting config mode ...
  75     ---
  76     END
  77
  78
  79 RN-42 Initial Configuration
  80 ---------------------------
  81 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.
  82
  83 1. hook up USB cable
  84 2. run `hid_listen` command  in console
  85 3. turn on Bluetooth switch
  86 4. press LShift+RShift+ScrLk(Fn+O) you will see output like followings:
  87
  88     Entering config mode ...
  89     CMD
  90     Ver 6.15 04/26/2013
  91     (c) Roving Networks
  92     ECHO ON
  93     SF,1
  94     AOK
  95     S-,TmkBT
  96     AOK
  97     SS,Keyboard/Mouse
  98     AOK
  99     SM,4
 100     AOK
 101     SW,8000
 102     AOK
 103     S~,6
 104     AOK
 105     SH,003C
 106     AOK
 107     SY,FFF4
 108     AOK
 109     R,1
 110     Reboot!
 111     Exiting config mode ...
 112
 113 5. output of command 'X' after cofiguration
 114
 115     Ver 6.15 04/26/2013
 116     (c) Roving Networks
 117     ***Settings***
 118     BTA=00066667BBE9
 119     BTName=TmkBT-BBE9
 120     Baudrt(SW4)=115K
 121     Mode  =DTR
 122     Authen=1
 123     PinCod=1234
 124     Bonded=0
 125     Rem=NONE SET
 126     ***ADVANCED Settings***
 127     SrvName= Keyboard/Mouse
 128     SrvClass=0000
 129     DevClass=1F00
 130     InqWindw=0100
 131     PagWindw=0100
 132     CfgTimer=255
 133     StatuStr=NULL
 134     HidFlags=3c
 135     DTRtimer=8
 136     KeySwapr=0
 137     ***OTHER Settings***
 138     Profile= HID
 139     CfgChar= $
 140     SniffEna=8000
 141     LowPower=0
 142     TX Power=fff4
 143     IOPorts= 0
 144     IOValues=0
 145     Sleeptmr=0
 146     DebugMod=0
 147     RoleSwch=0
 148
 149
 150 Switch to USB mode
 151 ------------------
 152 You can switch between USB and Bluetooth with pressing 'LShift+RShift+u'.
 153
 154
 155 Pairing mode
 156 ------------
 157 This disconnects current connect and enter pairing mode.
 158
 159
 160
 161
 162 For deveropment
 163 ===============
 164
 165 RN-42 Serial Connection
 166 -----------------------
 167 UART:           115200bps, 8bit, 1-stopbit, non-parity, no flow control
 168 SSP:            115200bps, 8bit, 1-stopbit, non-parity, no flow control(via Bluetooth)
 169
 170 To enter command mode disconnect the module from host and type '$$$'.(you will see 'CMD') and type '+' to get local echo. To exit type '---'(you will see 'END').
 171
 172
 173 RN-42 Commands
 174 --------------
 175 S-,tmkBT            // Device name
 176 SS,keyboard/mouse   // service name
 177 SM,4                // Auto Connect DTR mode
 178 SW,8010             // Sniff enable 0x10*0.625ms=10ms; 50ms is laggish and not much power save
 179 S~,6                // HID profile
 180 S~,0                // SPP profile
 181 SH,003C             // HID register
 182 SY,0004             // Transmit power
 183 SC,0000             // COD: 000005C0    (see HID spec/Bluegiga doc)
 184 SD,05C0             //     bit 12-8         7           6           5-0
 185                     //         00101        1           1           0
 186                     //         peripheral   pointing    keybaord    joystick, gamepad, ...
 187 SM,6                // Pairing mode: auto connect
 188 SM,4                // Master mode: Connection can be controled with GPIO6
 189 SF,1                // Factroy reset
 190 R,1                 // reboot
 191 SR,Z                // removes all remote addresses for reconnecting.
 192                     // can be used to connect another host
 193 SR,I                // registers last inquiry address
 194
 195
 196 Operation Modes
 197 ---------------
 198 SM,3        Auto Connect Master mode
 199 SM,4        Auto Connect DTR Mode uses GPIO6 to make and break connection(Mode =DTR)
 200                 confirm: auto connect works and control connection with GPIO6
 201 SM,5        Auto Connect ANY Mode (Mode =ANY)
 202                 each time GPIO is set, make inquiry and connect to the first found device
 203 SM,6        automatically reconnect(Mode =Pair)
 204                 confirm: auto connect works well but difficult to enter command mode.
 205
 206
 207 HID flag register
 208 -----------------
 209 SH,0200
 210 GH
 211
 212 10 0000 0000(0200)  default
 213 00 0011 1000(0038)  Combo
 214 || |  | |\_\____ number of paired devices to which the module can reconnect
 215 || |  | \_______ send out reports over UART (0xFF <len> <data>)
 216 || \__\_________ descriptor type
 217 |\______________ toggle virtual keyboard on iOS when first connected
 218 \_______________ Force HID mode if GPIO11 is high on power-up
 219
 220     Descriptor type:
 221     0000:   keybaord
 222     0001:   Game Pad
 223     0010:   Mouse
 224     0011:   Combo
 225     0100:   Joystick
 226     1xxx:   reserved
 227
 228
 229 Out report - Indicator
 230 ----------------------
 231 0xFE 0x02 0x01 <LED_state>
 232
 233
 234 Apple iOS
 235 ---------
 236 Keyboard can be used with iPhone, but mouse cannot.
 237
 238
 239 Android
 240 -------
 241 3.7.1.5 Note: To connect with Android phone the modules must wake up 11ms every 2.5seconds.
 242
 243
 244 Power Management
 245 ----------------
 246 Inquiry and Page window     Idle or Active  (3.1.1)
 247     Downside: delay in discovery or connection time
 248     SI,         // set inquiry scan window(discovery) on/off duty?
 249     SJ,         // set page scan window(connection)
 250     This reduces averaege power >20mA to 5mA(3mA in Sniff mode)
 251
 252 Sniff mode                  Transmit
 253     Sniff mode is disabled by default and radio is active continuously when connected.(25-30mA)
 254     In Sniff mode the radio wakes up intermittently and sleeps in very low power mode.(2mA)
 255     SW,<val>    // set interval timer(*0.625ms) 0000-7FFF
 256
 257 Deep sleep                  Idle            (3.1.2)
 258     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.
 259     SW,8320     // deep sleep enable(interval=0x320*0.625=500ms)
 260     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.
 261     To wake from deep sleep there are three ways: (in worst case wake up takes 5ms)
 262         *send a charactor to the UART(first charactor will be lost)
 263         *toggle CTS low to high and wait 5ms
 264         *wake automatically every slot time(<val>*0.625ms)
 265     Once the radio is awake it stay active for exactly 1 second of inactivity and then sleeps again.
 266     Downside: latency and data loss
 267
 268 Disable Output driver       Idle or Active  (3.1.3)
 269     S%,1000     // set all GPIO pins(0-11) to inputs.
 270
 271 Lower Transmit Power        Idle or Active  (3.1.4)
 272     SY,<hex>    // transmit power setting(takes effect after a power cycle and reboot)
 273     Downside: reducing effective range
 274
 275
 276 Optimizig for Latency
 277 ---------------------
 278 By default the firmware is optimized for throughput.
 279 SQ,16           // set latency bit
 280 SQ,0            // unset latency bit
 281
 282
 283 Configuration timer settings
 284 ----------------------------
 285 Remote configuration is used for the module to be configured with various commands over Bluetooth(SPP profile only?).
 286
 287 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.)
 288     ST,0        // no remote, no local when connected
 289     ST,<1-252>  // local and remote with timeout in seconds from power up
 290     ST,253      // local only       without timeout
 291     ST,254      // remote only      without timeout
 292     ST,255      // local and remote without timeout
 293
 294
 295 Commands
 296 --------
 297 S7,                     7bit mode
 298 SA,                     Authenticaiton
 299 SB,                     Send break
 300 SC,                     Service class
 301 SD,                     Device class
 302 SM,<val>                Operation mode
 303 SP,<string>             Pin code(alpahnumeric)
 304 SQ,<mask>               Special configuration(GPIO, discovery mode, low latency, reboot, UART)
 305 SR,<hex>                Store remote address
 306 SR,Z                    Erase all address
 307 SS,<string>             Set service name(1-20)**
 308 ST,<val>                Remote configuration timer(Master:0, Slave:0-255, Triger:as idle timer)
 309 SU,<val>                UART baud rate
 310 SW,<val>                low-power sniff mode** deep sleep and wake up every 625us * <val>
 311 SX,<0|1>                bonding enable  only acceps device that matches the stored address
 312 SY,<hex>                power setting**
 313 SZ,<val>                non-standard raw baud rate  <val>=baud*0.004096
 314 S~,<val>                Profile     0:SPP, 5:APL, 6:HID
 315 S-,<string>             Device name     -15 alphanumeric charactors
 316 S?,<0|1>                role switch enable
 317 S$,<char>               command mode char
 318 $|,<hex>                low-power connect mode  deep sleep/active(discoverable and connectable) cycle
 319 D                       display basic setting
 320 E                       display extended setting
 321 GB                      display the device's Bluetooth address
 322 GF                      display Bluetooth address of connected device
 323 GK                      show connection status
 324 GR                      show remote address for reconnecting
 325 G&                      show GPIO pin
 326 G<char>                 show stored setting
 327 +                       toggle local echo on/off
 328 &                       show GPIO 3,4,6,7(DIP switch)
 329 C                       connect to stored remote address
 330 C,<address>             connect last address
 331 CFI                     connect and go into fast data mode
 332 CFR                     connect and go into fast data mode
 333 CT,<address>,<val>      connect to the address and disconnect after val?
 334 F,1                     fast data mod:
 335 H                       display help
 336 I,<time>,<cod>          inquiry scan with <cod>
 337 IN,<time>,<cod>         inquiry scan with <cod>, return without BT name
 338 IR                      inquiry scan with 0055AA
 339 IS                      inquiry scan with 001F00
 340 J                       hide pin code
 341 K,                      kill    disconnects current connection
 342 L                       link quality
 343 M                       show modem signlal status
 344 O                       display other settings
 345 P,<char>                pass through?
 346 Q                       quiet mode  make the module not discoverable
 347 Q,0                     discoverable and connectable
 348 Q,1                     not discoverable and not connectable
 349 Q,2                     not discoverable and connectable
 350 Q,?                     display current quiet mode
 351 R,1                     reboot
 352 T,<0|1>                 pass received data while in command mode
 353 U,<baud>,<parity>       change UART setting tentatively
 354 V                       display firmware version
 355 W                       wake from quiet mode    enable discovery and connection
 356 Z                       deep sleep mode(<2mA)
 357
 358
 359 Reset to Factory Default
 360 ------------------------
 361 SF,1
 362 R,1