LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 BLUEAUDIO2 USER MANUAL Authors:
A. Colognese ________________ ________________ Date:
________________ LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Revision List RELEASE LIST AND CHANGE LOG DATA PAG. NOTE 30/06/2003 09/09/2003 01/12/2003 20/01/2004 03/06/2005
SW Release V1.2b. DRAFT Photo of board Included Mechanical table Pre-release of BlueAudio2 BlueAudio2 initial DRAFT EDIZ. 1.4 1.5 1.6 1.7 2.0 LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Table of Contents 1 2 INTRODUCTION.........................................................................................................5 BLUEAUDIO2 SYSTEM..............................................................................................6 2.1System Description....................................................................................................... 6 2.2Hardware Description.................................................................................................... 7 2.3Electrical specifications................................................................................................. 8 2.3.1Maximum ratings................................................................................................................... 8 2.3.2Mechanical specifications...................................................................................................... 8 2.3.3Bluetooth Specifications........................................................................................................ 9 FEATURES................................................................................................................ 10 3 3.1Power Supply.............................................................................................................. 10 3.2User Interface.............................................................................................................. 10 3.2.1Button functions...................................................................................................................10 3.2.2Led Messages..................................................................................................................... 12 3.2.3Audio messages - Tones.....................................................................................................12 PAIRING.................................................................................................................... 14 4 4.1HS pairing mode......................................................................................................... 14 4.1.1Pairing with a mobile supporting Headset profile................................................................ 15 4.1.2Pairing with a HU device..................................................................................................... 15 4.2HF pairing mode.......................................................................................................... 15 4.2.1Pairing with a mobile supporting Headset profile................................................................ 15 AUDIO LINK SET-UP................................................................................................. 17 5 5.1HU HU.................................................................................................................... 17 5.2CU HU.................................................................................................................... 17 EXTERNAL CONNECTIONS..................................................................................... 19 6 LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 6.1Power Supply Connector JP3.................................................................................. 19 6.2Speaker Connector JP1........................................................................................... 19 6.3Microphone Connector BFIN.................................................................................... 20 6.4User Interface Connector JP2 ................................................................................. 20 BLUEAUDIO BOARD VIEW...................................................................................... 21 7 LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 1 Introduction This document describes main characteristics and features of BlueAudio2 devices for intercom or mobile applications. Conventions In the document following conventions are assumed:
HU: BlueAudio2 or BlueAudio device. CU: Mobile cellular phone with Bluetooth support. LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 2 BlueAudio2 system 2.1 System Description BlueAudio2 is a wireless device that allows hands-free use of any mobile phone supporting Bluetooth Headset or Hands-free profiles, but also provides capability for easy wireless audio communication with another BlueAudio2 device, or a BlueAudio one. Its main application could be a Bluetooth Helmet. All functions are implemented with a user-friendly interface based on a multifunctional button located on the helmet, an external led and audio messages sent to hi-fidelity acoustic speakers. User will be able to talk with a passenger and in case of a incoming call from a paired cellular phone, he will be able to answer. The connection with the paired device is automatically set-up and it can be dropped by each user. CU1 CU2 HU1 HU2 In the previous figure, a blue arrow indicates the possibility to establish an audio link between two devices. Two devices can establish an audio link only if they were previously paired. This LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 connections can be dropped if there is an incoming call from a paired cellular phone, if affiliated. HU devices use a dedicated protocol of communication between then. This protocol guarantees that two devices can be paired and connected only if they are producted by the same producer. To be paired with a cellular phone, the device is delivered with a password which must be typed during the pairing procedure. Audio volume can be selected among 5 levels. The application is supplied with an internal rechargeable battery pack and significant efforts have been devoted to reduce power consumption to provide users with a full day of usage on a single charge. Standby current consumption was designed to be lower than 5 A. In addition BlueAudio2 offers superior noise reduction. 2.2 Hardware Description BlueAudio2 is a Bluetooth device for wireless audio communications. In Fig. 2.2 you can see the block diagram of the system. Speakers Microphone Audio Amplifier Audio Codec Power Management Power Base Band Radio Chip Led Button Fig 2: Block Diagram The Bluetooth chipset is based on a STMicrolectronic solution. An Audio codec chip performs the digital/analog and analog/digital conversion. The output audio is amplified by a 1.25W amplifier LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 with volume control. The antenna is integrated on the PCB. The power management block perform two main task:
voltage regulation low power switch off For more details, please refer to Appendix A. 2.3 Electrical specifications 2.3.1 Maximum ratings Parameter DC Power Supply Power Consumption Operating Temperature Storage Temperature Relative Humidity1 min 3.3 5m
-20
-40 10%
Typ 3.6 60m 27 27
Max 6 100m 70 100 90%
Unit V A oC oC
WARNING Stressing the device beyond the Maximum Ratings may cause permanent damage. These are stress rating only. Operation beyond Operating Conditions is not recommended and extended exposure beyond Operating Condition may affect reliability. 2.3.2 Mechanical specifications The device cannot be used without packaging or external shielding. Users cannot reach electronic parts, connectors and cables. 1Non condensing LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Parameter Width Lenght High min
Typ 47 47
Max
7 Unit mm mm mm 2.3.3 Bluetooth Specifications The BlueAudio2 is a Bluetooth device certified for audio wireless audio by Bluetooth Qualification Body (BQB). It is compliant to Bluetooth Protocol V1.1b and it supports the following profiles:
HSP: HeadSet Profile HFP: Hands-Free Profile ICP: Intercomm Profile (not qualified, modified and proprietary). LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 3 Features 3.1 Power Supply BlueAudio2 devices can be powered by 3.6V by means of Li-Ion battery with a capability of 650mA/h. This solution allows an autonomy of approximately 8-10 hours in continuous operation. When off, the system has a power consumption lower than 5m A. 3.2 User Interface The user interface is based on:
This interface allows the user to control the state of the device and to send it appropriate commands. a push-button a LED audio messages (i.e. tones) 3.2.1 Button functions There are more kinds of pressure detected and handled by BlueAudio2 devices: some of them can be used only in special situations, while during normal behaviour only two of them are commonly used. The various pressure types are distinguished by their duration and the user is helped by the system with audio and/or visual feedback as soon as it recognize the particular pressure being effected. Actions are effectively taken only when the button is released, in order to avoid multiple LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 and undesired commands. Type Turn on HS pairing Length (s) Applicable when Effect 4 t < 9 BlueAudio2 is off Turns device on 9 t <14 BlueAudio2 is off Turns device on and enters Notification Tone, LED steady on Tone, LED blinking fast HS pairing mode HF pairing t 14 BlueAudio2 is off Turns device on and enters Tone, LED blinking fast HF pairing mode Short Long Turn off 0.2 t < 2 BlueAudio2 is on Depends on device status 2 t < 5 BlueAudio2 is on Depends on device status t 5 BlueAudio2 is on Turns device off Nothing Tone Tone, LED steady on The following table describes the operations associated to short and long button pressures in the various states tha device can be in. Call related actions are only performed if a paired device is available for that kind of call. Mode
State Off Pairing Short pressure
Start inquiry and enters master pairing Long pressure
Delete stored pairing informations Master pairing Start inquiry if not already pending
HS Idle Initiate HS outgoing call Outgoing call Incoming call Call
Accept call Adjust volume Initiate intercom call if device is master
Close call LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 State Idle Mode HF Call Voice recognition Intercom call HF/HS Short pressure Long pressure Connect cellular phone Activate voice recognition HF service Outgoing call Adjust volume (if audio is present) Incoming call Accept call Adjust volume Initiate intercom call if device is master Close service connection Close call Refuse call Close call
Terminate voice recognition Adjust volume Close call 3.2.2 Led Messages The led it has the function to transmit a visual message on the state of the device. The following table is looked at. Status Off On Pairing Connected Led Off Very slow blinking Fast blinking Slow blinking 3.2.3 Audio messages - Tones Tones are played from the speakers to indicate an event or the confirmation of a command. The following table lists all the tones used by the application and the events they are associated to. Name turn_on turn_off pairing_mode_hs pairing_mode_hf pairing_success Tone 1 kHz, 300ms 600 Hz, 450ms 1.4 kHz, 350ms 1.4 kHz, 250ms 60 ms mute 1.4 kHz, 250ms 1.4 kHz, 450ms Action/Event Device turning on Device turning off Start of HS pairing mode Start of HF pairing mode Pairing successfully completed LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Name pairing_failure inquiry_failed tick Tone 600 Hz, 350ms 800 Hz, 150ms 600 Hz, 150ms 1 kHz, 100ms warning 600 Hz, 250ms error ic_connection ic_disconnection ic_link_failure hx_connection hx_disconnection hx_link_failure ring voice_rec_on LensLogica s.r.l. 600 Hz, 250ms, 80 ms mute, 600 Hz, 250ms 1.4 kHz, 200ms 800 Hz, 300ms 800 Hz, 300ms, 50 ms mute, 600 Hz, 100 ms 1.4 kHz, 100ms, 50 ms mute, 1.4 kHz, 100ms 800 Hz, 100ms, 50 ms mute, 800 Hz, 100ms 800 Hz, 100ms, 50 ms mute, 800 Hz, 100ms, 50 ms mute, 600 Hz, 100ms 1.4 kHz, 200 ms, 100 ms mute, 1.4 kHz, 200 ms 1.4 kHz, 50ms Action/Event Pairing unsuccesfully completed Master device inquiry failure Long button pressure detected HFP/HSP light/medium errors HFP/HSP outgoing connection timeout No operations for short or long button pressures in current state Operation not available Serious HFP/HSP errors Intercomm connection established Intercomm disconnection Intercomm connection link timeout HFP/HSP connection established HFP/HSP disconnection HFP/HSP connection link timeout Ring tone for incoming phone calls (played when inband-ringing is not supported by the cellular phone) HFP activation of voice recognition LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Name voice_rec_off volume_step volume_max volume_min Tone 800 Hz, 50ms 800 Hz, 100 ms 1 kHz, 100 ms 600 Hz, 100 ms Action/Event HFP deactivation of voice recognition Audio volume increased/decreased of 1 step Audio volume reached maximum level Audio volume reached minimum level LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 4 Pairing The pairing procedure is necessary in order to let two HU devices know each other and to allow the connection between them. This procedure must be executed at the first use of the system or every time you want to connect a new device. A BlueAudio2 device can be paired at the same time to a cellular phone and to an other HU. If correctly performed, the pairing configuration is permanently stored and automatically reloaded during switch on. Pairing mode can be entered only from a turned off BlueAudio2 and requires special button pressures much longer than the those necessary to just turn on the device. BlueAudio2 devices offer two pairing modes in order to give the user the chance to choose the profile to be used when pairing toward a mobile phone, a feature that is very useful when the latter supports both Headset and Hands-free profiles:
1. HS pairing mode, which allow pairing with cellular phones supporting Bluetooth Headset profile or with another HU device;
2. HF pairing mode, which allow pairing only with cellular phones supporting Bluetooth Hands-
free profile. 4.1 HS pairing mode This procedure allows the pairing of a BlueAudio2 device with a cellular phone supporting Bluetooth Headset profile or with another HU device. It can be entered from a turned off BlueAudio2 device by pressing its button and keeping it pressed until the device firstly plays a tone and turns its LED steady on as a confirmation that it is being turned on and secondly, after about 5 seconds, plays another tone and starts blinking its LED very fast. The button can now be released and the pairing procedure can be continued. LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 4.1.1 Pairing with a mobile supporting Headset profile 1. Enter the HS pairing mode of your BlueAudio2 device;
2. Follow the instructions of your cellular phone in order to start its pairing procedures. It will look for other Bluetooth devices and present you a list where you should be able to see the BlueAudio2 one, which is identified by the name "STILO HS followed by some other informations, namely its firmware version and an identification code. Select the BlueAudio2 device;
3. Once prompted for a PIN type the password "1111", without quotes. 4. If the procedure is correctly executed, the cellular phone will display a confirmation message and BlueAudio2 will play a confirmation tone. 4.1.2 Pairing with a HU device 1. Enter the HS pairing mode of your BlueAudio2 device;
2. Enter the other device pairing mode (HS pairing mode if it is a BlueAudio2 one, normal pairing mode if it is a BlueAudio one);
3. Press shortly the button of the device you want to be the master, so to say the one that will connect the paired one, called the slave. The master will proceed to discover the other device and to try to pair it. 4. The success or failure of pairing will be confirmed by a tone and, in case of success, the master device will automatically establish an audio connection toward the slave. 4.2 HF pairing mode This procedure allows the pairing of a BlueAudio2 device with a cellular phone supporting Bluetooth Hands-free profile. It can be entered from a turned off BlueAudio2 device by pressing its button and keeping it pressed until the device firstly plays a tone and turns its LED steady on, as a confirmation that it is being turned on, secondly plays another tone and starts blinking its LED very fast to indicate the possibility of an HS pairing, and finally, after about 10 seconds from when it turned on, plays a third tone while the LED still blinks fast. 4.2.1 Pairing with a mobile supporting Headset profile 1. Enter the HS pairing mode of your BlueAudio2 device;
5. Follow the instructions of your cellular phone in order to start its pairing procedures. It will look LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 for other Bluetooth devices and present you a list where you should be able to see the BlueAudio2 one, which is identified by the name "STILO HF followed by some other informations, namely its firmware version and an identification code. Select the BlueAudio2 device;
6. Once prompted for a PIN type the password "1111", without quotes. 7. If the procedure is correctly executed, the cellular phone will display a confirmation message and BlueAudio2 will play a confirmation tone. LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 5 Audio link set-up The BlueAudio2 system allows intercommunication with other HU devices and cellular phones equipped with Bluetooth technology and supporting Headset or Hands-free profiles. 5.1 HU HU The connection HU HU permits to use BlueAudio2 devices like an intercom. At startup the device paired as master automatically connects the slave one. If the latter is not reachable, the connection fails and the master remains in a idle state waiting for eventual incoming calls from cellular phone or for user commands. Once the intercomm connection is established the user can adjust the audio volume with short pressures of the button. The communication can be dropped voluntarily by the user of either master or slave devices with a long pressure of the button and is automatically dropped by the master device if it detects an incoming call from its paired phone. In this last case the master automatically tries to re-establish an intercom connection with the slave once disconnected from the cellular phone. Slave device cannot detect incoming connection if its already connected to another device. 5.2 CU HU This mode allows the use of BlueAudio2 like a standard Bluetooth Headset or Hands-free device. In particular it will be possible to accept an incoming call or to take advantage of the vocal synthesis
(if present on telephone) in order to start an outgoing call. It is also possible to begin the call from LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 the phone (by composing the number or by choosing it from the rubrica) and then switch the audio to BlueAudio2 by pressing the button. BlueAudio2 plays a ring tone when signaled by the cellular phone, unless an inband-ring tone is being played by the CU itself. LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 6 External connections 6.1 Power Supply Connector JP3 The power connector is a MOLEX 5264-02 2.50 mm pitch. Pin Function 1 2 VDD GND 6.2 Speaker Connector JP1 The speaker connector is a JST P/N PHR-04P 2mm pitch and the audio signal is balanced. The two speakers are in parallel. Pin Function OUT+
1 2 OUT-
OUT+
3 4 OUT-
LensLogica s.r.l. LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 6.3 Microphone Connector BFIN The microphone connector is a JST P/N PHR-03P 2mm pitch. The pin 1 supply the power for pre-
amplified mic. Pin Function 1 2 3 IN+
GND IN-
6.4 User Interface Connector JP2 The User Interface connector is a JST P/N PHR-03P 2mm pitch. Pin Function Button 1 Led 2 3 GND LensLogica s.r.l. 7 BlueAudio2 Board View Audio amplifier LED/Button connector CODEC Microphone connector LensLogica S.r.l. Via S.Salvatore, 35 35100 Padova Italy Tel: +39-049-870.5048 Fax: +39-049-870.6426 www.lenslogica.com P.IVA 03559840289 Speakers connector STM Chipset Power connector LensLogica s.r.l.