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Old 9th July 2019, 03:01 PM   #2811
Blitz is offline Blitz  Germany
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Understand all of that and did it like advised. The issue is still that the image from the SDcard is not read when pressing the s2 buttom on the BBG. I guess simply my board is defective...or these SDHC cards are not usable....will see if I have some older cards somewhere.
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Old 10th July 2019, 05:20 PM   #2812
Blitz is offline Blitz  Germany
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OK, it was a defective board. I found an old BBB which was laying around for years, plugged the SDcard in and everthing was very easy.

I could find in the network and configured it to MPD/UPNP. Currently the board has nothing attached to it, no chronus or Hermes or anything...as I wanted to get it run BOTIC first and see if are on board.

I tried to play something from IOS mconnect lite...as UPMpd was now shown already...but get an error message than...I guess now it is time to attach Chronus / Hermes (before attaching the I2S DAC) ?

CAn you include a routine into your firmware that when the hardware power-buttom is pressed, the BBB shuts itself down ? NOt sure I want always to open a webpage for that...
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Old 11th July 2019, 09:16 AM   #2813
Blitz is offline Blitz  Germany
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Ok, installation process continued...i what I did:

- Installed the 4 pin header for external 5v power supply and gave two separate supplies for the BBB and the clean side.
- Installed the battery on the cronus hermes to give the power down process enough safety
- Plugged BBB into cronus / hermes
- installed minimupnp server on my NAS
- installed mconnect lite on my ipad

but: not attached anything to the i2s output of the cronus hermes, so no dac yet...

Well.

The result is:
- mconnect can see mpdupn and offers it as a player
- minim server is working, I can play music on my ipad.
- But when I try to play on Mpdupn, The initial song loads, but the duration indicator does not move, so no music is playing. After a Minute it comes back with an error message.
- All four LED are up and light.
- I switchthe BBB off by going to the webpage of PPY's software and give the power off command.
- The cronus and hermes switch off immediately, the BBB as well, but then the first LED of the BBB continues to flicker. When you detach the power cord, it continues, so it has to do with the battery operation I guess and I am not sure if this flicker is what we want. But it continues.

So, my questions:
- Does a DAC need to be present in order to make the duration indicator to move in mconnect or is I2S a dump stream and even when I attach a DAC the software would not play anything ?
- Any idea why it is not playing ?
- Should I detach the battery for PPY image or would this risk the BBB ? Switch off goes only over PPY webpage with the switchoff buttom on it.
- Not sure if I need to edit some conf files in your distro as I am using cronus hermes now in combination with PCM Flac files only....

Last edited by Blitz; 11th July 2019 at 09:43 AM.
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Old 11th July 2019, 09:46 AM   #2814
ppy is offline ppy  Russian Federation
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Quote:
Originally Posted by Blitz View Post
So, my questions:
- Does a DAC need to be present in order to make the duration indicator to move in mconnect or is I2S a dump stream and even when I attach a DAC the software would not play anything ?
- Any idea why it is not playing ?
- Should I detach the battery for PPY image or would this risk the BBB ? Switch off goes only over PPY webpage with the switchoff buttom on it.
DAC is not required to connect. You only need the presence of reverse synchronization MCLK from the reclocker.
Cronus should provide this signal. But I do not have Cronus available to check for sure. It may be enough for you to change the /boot/uEnv.txt parameters for compatibility with Cronus.
In the next release, a hardware BBB power button will be made.
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Old 11th July 2019, 11:27 AM   #2815
janho12345 is offline janho12345  Germany
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Has someone successfully integrated a surround sound setup?

I have the Debian botic Linux Running Roon in a Stereo configuration.
What I want is to connect a ac-3 Dolby signal over Toslink via DIR9001 to the BBb which then decodes in ffmpeg to give out 6 or 8 channels (5.1/7.1) pcm data to 4 soekris dam via i2s.

Is that even possible?
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Old 11th July 2019, 03:53 PM   #2816
Blitz is offline Blitz  Germany
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Ok, here is the uEnv.txt which comes with your image:


fdtfile=am335x-boneblack-botic.dtb
optargs=snd_soc_botic.serconfig=MM--
snd_soc_davinci_mcasp.mute_pins=8
snd_soc_davinci_mcasp.amanero_mute_delay=500
snd_soc_davinci_mcasp.amanero_mute_pins=8
snd_soc_botic.ext_masterclk=7
snd_soc_botic.clk_44k1=45158400
snd_soc_botic.clk_48k=49152000

A couple of initial ideas (please advise me as I have no clue):
- My clocks are 22k/24k, I guess I should update the setting above to that ?
- I have no amareno and no DSD at the moment...maybe later, but for the moment it is for PCM only up to 192k, so should I delete the amanero entries above ?
- I play 2 channel I2S, so like the BIIISE (mine is the original BIII, but with the DACs in parallel), so I guess not MM--, but --I- ... 2ch I2S output on mcasp0_axr2 pin (old default), no ?
- snd_soc_botic.ext_masterclk=7 above is not documented in miero's page...is not 3 or 4 the right thing ?
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Old 11th July 2019, 04:53 PM   #2817
Blitz is offline Blitz  Germany
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I did the changes I guestimated above...but no success...I guess I need some hints...
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Old 11th July 2019, 06:13 PM   #2818
ppy is offline ppy  Russian Federation
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snd_soc_botic.ext_masterclk=3 snd_soc_botic.clk_44k1=22579200 snd_soc_botic.clk_48k=24576000
About the snd_soc_botic.serconfig parameter for Hermes, I can't help you. I have no information about this board. Maybe you will be prompted by other owners Hermes-Cronus.

Last edited by ppy; 11th July 2019 at 06:24 PM.
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Old 11th July 2019, 07:09 PM   #2819
Blitz is offline Blitz  Germany
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That is what i alread incorporated....so, kt would be nice if someone with my application profile can post his uEnv.txt....
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Old 13th July 2019, 01:26 PM   #2820
amigo1 is offline amigo1
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I have tried Debian 10 with Botic driver. It sounds nice but not as good as Volumio built by Miero.
The kernel and uEnv.txt is the same. What settings should be changed for best sound quality (core isolation, lower frequencies and power etc) or installed libraries (Alsa-lib, libasound2 etc.)?
See link system optimization:
System optimizations?
Linux-Audio-Adjustments:
GitHub - dynobot/Linux-Audio-Adjustments: Audio Tweaks for Debian Based RPi

Last edited by amigo1; 13th July 2019 at 01:53 PM.
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