Current version of the OpenAuto Pro is 7.0
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FM radio with RDS - your ideas for HW
#51
Come on! Bring in fm radio. No use of replacing head unit if you dont support fm radio.
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#52
What I did to be able to support FM radio is get a steering wheel with controls. Mount my radio behind the android auto display and use the steering wheel controls to switch the radio either from aux in (the android auto system), dab+ or FM (though even discs would work in this setup).



I guess it might even be possible to (depending on your speaker configuration) link multiple inputs at the same time allowing the Google assistant to still talk to you when in radio mode. However then your music would still have to be paused manually. (using something like this https://www.amazon.com/Rolls-MX42-Stereo-Mini-Mixer/dp/B00102ZN40/ref=sr_1_3?s=musical-instruments&ie=UTF8&qid=1511663554&sr=1-3&keywords=stereo+mixer i.e.)



I know it's not ideal but it works.
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#53
We have read all the post again.

To be honest there is no good solution for both, DAB and FM frequencies. All solutions that cost more than 40-50$ are not interesting for us. We wanted to give a try with uGreen, however there is no support for FM and after few emails exchange looks like they are not interested in further development. Our opinion about SDR dongle stays the same - too high resource consumption.

Seems like, for know, the only solution would be to use Si4702/03-C19 wih Worldwide FM band support and stay with welle.io for DAB and DAB+.
https://www.silabs.com/documents/public/...03-C19.pdf

https://www.sparkfun.com/products/12938

This also means that audio sources have to handled manually by user. For now, development of audio-mixer is out of scope for us.

As always, let us know your thoughts.
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#54
BlueWave Wrote:We have read all the post again. 

To be honest there is no good solution for both, DAB and FM frequencies. All solutions that cost more than 40-50$ are not interesting for us. We wanted to give a try with uGreen, however there is no support for FM and after few emails exchange looks like they are not interested in further development. Our opinion about SDR dongle stays the same - too high resource consumption. 

Seems like, for know, the only solution would be to use Si4702/03-C19 wih Worldwide FM band support and stay with welle.io for DAB and DAB+.
https://www.silabs.com/documents/public/...03-C19.pdf

https://www.sparkfun.com/products/12938


This also means that audio sources have to handled manually by user. For now, development of audio-mixer is out of scope for us.

As always, let us know your thoughts.


I think having terrestrial FM and DAB as 2 different applications would be OK. 
The part in bold above,  what do you mean by that?  Sorry just not understanding what that means for the end user.
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#55
I would use TuneIn Radio if anything, I would listen to the radio and wellie.io does not work for me, but there is simply no room for addon boards in my setup, so I listen to MP3 and personly would find a nice realiable MP3 player which plays direct from sd card or phone, (not streaming over the internet) built in as standard way more usefull, if my set up was as a full on head unit then yes radio would be a must.
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#56
Quote:This also means that audio sources have to handled manually by user.

We will not develop audio mixer for different audio sources.  For instance, you have to manually mute kodi which is playing mp4 in case you would like to listen radio.
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#57
With the imminent launch of the Raspberry Pi 4, with significantly better RAM and CPU performance, would you reconsider pursuing software support for an rtl-sdr device?
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#58
Lightbulb 
I was thinking about building a solution with the Silicon Labs SI4689 chip.  Why?  The SI4689 offers all-in-one, ultra-low power, multi-band digital broadcast receivers to support global analog and digital radio standards, including AM, SW, LW, FM, FM RDS, HD, DAB, DAB+, DMB, and DRM(30).  If you create a solution with this one chip it will work worldwide!  I am sharing some details below including links to product details and some existing code.  I am also going to look into how much the eval kit costs.  I am sure it's expensive, but good for testing functionality with OpenAuto Pro before deciding to use this chip.  Then possibly on to a custom board using the SI4689 chip to reduce cost for sales.  SI4689 Datasheet  Evaluation Board

Someone has even done some of the coding work so we get a head start!  teknoid Github and elmo2k3 Github

(06-24-2019, 05:18 PM)frankpintosr Wrote: I was thinking about building a solution with the Silicon Labs SI4689 chip.  Why?  The SI4689 offers all-in-one, ultra-low power, multi-band digital broadcast receivers to support global analog and digital radio standards, including AM, SW, LW, FM, FM RDS, HD, DAB, DAB+, DMB, and DRM(30).  If you create a solution with this one chip it will work worldwide!  I am sharing some details below including links to product details and some existing code.  I am also going to look into how much the eval kit costs.  I am sure it's expensive, but good for testing functionality with OpenAuto Pro before deciding to use this chip.  Then possibly on to a custom board using the SI4689 chip to reduce cost for sales.  SI4689 Datasheet  Evaluation Board

Someone has even done some of the coding work so we get a head start!  teknoid Github and elmo2k3 Github

Features
  • Worldwide FM band support (76–108 MHz)
  • Worldwide AM band support (520-1710 kHz)
  • DAB, DAB+ Band III support (168–240 MHz)
  • Advanced RDS/RBDS decoding engine
  • AM/FM HD Radio™ support
  • Integrated HD blend
  • Supports WorldDMB Receiver Profiles 1 and 2
  • OFDM channel demodulator
         Simultaneous decoding of up to 4 service components     Seamless dynamic multiplex reconfiguration
  • Integrated SRAM supporting time and frequency de-interleaving
  • Advanced seek functionality
  • Advanced audio DSP processing
  • Complete on-chip source decode
  • I2S digital audio out with ASRC
  • Integrated 97 dB stereo audio DAC
  • Concurrent I2S / L-R stereo audio out
  • Full range of analog and digital signal quality metrics
  • Fully-integrated VCO / PLL / synthesizer
  • Fully-integrated advanced AGC and alignment
  • SPI, I2C control interfaces
  • WLCSP and QFN packages
  • Digital Radio UK (DRUK) Digital Tick Mark Certified
  • HD Radio™ Certified
   
Thanks, Frank
Carputer Detail   Parts List
2004 Chevrolet Tahoe Z71 w/ Bose & Onstar
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#59
(06-09-2019, 04:01 PM)BlueWave Wrote: We have read all the post again.

To be honest there is no good solution for both, DAB and FM frequencies. All solutions that cost more than 40-50$ are not interesting for us. We wanted to give a try with uGreen, however there is no support for FM and after few emails exchange looks like they are not interested in further development. Our opinion about SDR dongle stays the same - too high resource consumption.

Seems like, for know, the only solution would be to use Si4702/03-C19 wih Worldwide FM band support and stay with welle.io for DAB and DAB+.
https://www.silabs.com/documents/public/...03-C19.pdf

https://www.sparkfun.com/products/12938

This also means that audio sources have to handled manually by user. For now, development of audio-mixer is out of scope for us.

As always, let us know your thoughts.

Let us quote upper our summary again.

Did you check if this dev board is available at all? Still there is no ready to use board available for everyone. This mean that you have to design our own PCB and deal with EMC, radiation, or check how it behaves in moving car where there is a lot of disruptions... and after survey we have made some time ago, users expect product in price range 30-40$. Quite challenging. 


@[b]INS4NITY [/b]This could be good idea.
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#60
(06-24-2019, 06:30 PM)BlueWave Wrote:
(06-09-2019, 04:01 PM)BlueWave Wrote: We have read all the post again.

To be honest there is no good solution for both, DAB and FM frequencies. All solutions that cost more than 40-50$ are not interesting for us. We wanted to give a try with uGreen, however there is no support for FM and after few emails exchange looks like they are not interested in further development. Our opinion about SDR dongle stays the same - too high resource consumption.

Seems like, for know, the only solution would be to use Si4702/03-C19 wih Worldwide FM band support and stay with welle.io for DAB and DAB+.
https://www.silabs.com/documents/public/...03-C19.pdf

https://www.sparkfun.com/products/12938

This also means that audio sources have to handled manually by user. For now, development of audio-mixer is out of scope for us.

As always, let us know your thoughts.

Let us quote upper our summary again.

Did you check if this dev board is available at all? Still there is no ready to use board available for everyone. This mean that you have to design our own PCB and deal with EMC, radiation, or check how it behaves in moving car where there is a lot of disruptions... and after survey we have made some time ago, users expect product in price range 30-40$. Quite challenging. 


@[b]INS4NITY [/b]This could be good idea.

I almost had a heart attack just now!  I googled the board and found it, with a 3 week lead time.  But the heart attack came when I saw the price! Cry
Mouser  $688
Digikey  $754

Obviously that is not at all feasible, so I will look to see about developing a board.  If anyone has the skills to design such a board I would love to enlist your help!
Thanks, Frank
Carputer Detail   Parts List
2004 Chevrolet Tahoe Z71 w/ Bose & Onstar
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