Roving RN-42 ============ TODO ---- - 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 - 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: - 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 Configuration ------------- Ver 6.15 04/26/2013 (c) Roving Networks ***Settings*** BTA=0006664B3AE3 BTName=tmkBT-3AE3 Baudrt(SW4)=115K Mode =Pair Authen=2 Bonded=1 Rem=001BDC06415B ***ADVANCED Settings*** SrvName= keyboard/mouse SrvClass=0000 DevClass=05C0 InqWindw=0100 PagWindw=0100 CfgTimer=255 StatuStr=NULL HidFlags=3f DTRtimer=8 KeySwapr=0 ***OTHER Settings*** Profile= HID CfgChar= $ SniffEna=0 LowPower=0 TX Power=4 IOPorts= 0 IOValues=0 Sleeptmr=0 DebugMod=0 RoleSwch=0 Ver 6.15 04/26/2013 (c) Roving Networks ***Settings*** BTA=0006664B3AE3 BTName=tmkBT-3AE3 Baudrt(SW4)=115K Mode =DTR Authen=2 Bonded=0 Rem=BCF5AC9BCB7E ***ADVANCED Settings*** SrvName= keyboard/mouse SrvClass=0000 DevClass=0000 InqWindw=0100 PagWindw=0100 CfgTimer=255 StatuStr=NULL HidFlags=3f DTRtimer=8 KeySwapr=0 ***OTHER Settings*** Profile= HID CfgChar= $ SniffEna=0 LowPower=0 TX Power=ffe8 IOPorts= 0 IOValues=0 Sleeptmr=0 DebugMod=0 RoleSwch=0 command mode ------------ To enter command mode disconnect the module from host and type '$$$'.(you will see 'CMD') To exit type '---'.(you will see 'END') Serial line: 115200bps, 8bit, 1-stopbit, non-parity, no flow control SSP: 115200bps, 8bit, 1-stopbit, non-parity, no flow control(via Bluetooth) S-,tmkBT // Device name SH,0038 // HID register SC,0000 // COD: 000005C0 (see HID spec/Bluegiga doc) SD,05C0 // bit 12-8 7 6 5-0 // 00101 1 1 0 // peripheral pointing keybaord joystick, gamepad, ... S~,6 // HID profile SS,keyboard/mouse // service name SM,6 // Pairing mode: auto connect SM,4 // Master mode: Connection can be controled with GPIO6 SY,FEE8 // lower power -20dbM HID profile ----------- S~,6 HID profile S~,0 SPP profile R,1 reboot Apple iOS --------- Cannot supported without apple iAP authentication chip. HID flag register ----------------- SH,0200 GH 10 0000 0000(0200) default 00 0011 1000(0038) Combo || | | |\_\____ number of paired devices to which the module can reconnect || | | \_______ send out reports over UART (0xFF ) || \__\_________ descriptor type |\______________ toggle virtual keyboard on iOS when first connected \_______________ Force HID mode if GPIO11 is high on power-up Descriptor type: 0000: keybaord 0001: Game Pad 0010: Mouse 0011: Combo 0100: Joystick 1xxx: reserved Out report - Indicator ---------------------- 0xFE 0x02 0x01 LED Status ---------- Configuring 10 times per sec Startup/configuration timer 2 times per sec Discoverable/Inquiring/Idle once per sec Connected solid on Pairing ------- First, host initiates pairing process and once it is done, auto connect will work thereafter. SM,3 Master mode SM,4 Auto Connect DTR Mode uses GPIO6 to make and break connection(Mode =DTR) confirm: auto connect works and control connection with GPIO6 SM,5 Auto Connect ANY Mode (Mode =ANY) each time GPIO is set, make inquiry and connect to the first found device SM,6 automatically reconnect(Mode =Pair) confirm: auto connect works well but difficult to enter command mode. Fast data mode -------------- The module enters fast data mode after 'remote configuration timer' window is passed from power on. In this mode the module does not accept '$$$' to enter command mode. Power Management ---------------- Inquiry and Page window Idle or Active (3.1.1) Downside: delay in discovery or connection time SI, // set inquiry scan window(discovery) on/off duty? SJ, // set page scan window(connection) This reduces averaege power >20mA to 5mA(3mA in Sniff mode) Sniff mode Transmit Sniff mode is disabled by default and radio is active continuously when connected.(25-30mA) In Sniff mode the radio wakes up intermittently and sleeps in very low power mode.(2mA) SW, // set interval timer(*0.625ms) 0000-7FFF Deep sleep Idle (3.1.2) 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. SW,8320 // deep sleep enable(interval=0x320*0.625ms) 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. To wake from deep sleep there are three ways: (in worst case wake up takes 5ms) *send a charactor to the UART(first charactor will be lost) *toggle CTS low to high and wait 5ms *wake automatically every slot time(*0.625ms) Once the radio is awake it stay active for exactly 1 second of inactivity and then sleeps again. Downside: latency and data loss Disable Output driver Idle or Active (3.1.3) S%,1000 // set all GPIO pins(0-11) to inputs. Lower Transmit Power Idle or Active (3.1.4) SY, // transmit power setting(takes effect after a power cycle and reboot) Downside: reducing effective range Optimizig for Latency --------------------- By default the firmware is optimized for throughput. SQ,16 // set latency bit SQ,0 // unset latency bit Configuration timer settings ---------------------------- Remote configuration is used for the module to be configured with various commands over Bluetooth(SPP profile only?). 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.) ST,0 // no remote, no local when connected ST,<1-252> // local and remote with timeout in seconds from power up ST,253 // local only without timeout ST,254 // remote only without timeout ST,255 // local and remote without timeout Android ------- 3.7.1.5 Note: To connect with Android phone the modules must wake up 11ms every 2.5seconds. Commands -------- SC, SM, SD, SP, Pin code(alpahnumeric) SQ, Special configuration(GPIO, discovery mode, low latency, reboot, UART) SR, Store remote address SR,Z Erase all address SS, Set service name(1-20)** ST, Remote configuration timer(Master:0, Slave:0-255, Triger:as idle timer) SU, UART baud rate SW, low-power sniff mode** deep sleep and wake up every 625us * SX,<0|1> bonding enable only acceps device that matches the stored address SY, power setting** SZ, non-standard raw baud rate =baud*0.004096 S~, Profile 0:SPP, 5:APL, 6:HID S-, Device name -15 alphanumeric charactors S?,<0|1> role switch enable S$, command mode char $|, low-power connect mode deep sleep/active(discoverable and connectable) cycle D display basic setting E display extended setting GB display the device's Bluetooth address GF display Bluetooth address of connected device GK show connection status GR show remote address for reconnecting G& show GPIO pin G show stored setting + toggle local echo on/off & show GPIO 3,4,6,7(DIP switch) C connect to stored remote address C,
connect last address CFI connect and go into fast data mode CFR connect and go into fast data mode CT,
, connect to the address and disconnect after val? F,1 fast data mod: H display help I,