Thanks for extensive comments. I applied for a 2.5.2 board, so I'm going to receive once with the fixed IC. As a first step I'll feed the board with laptop and USB/Amanero but my dream is to arrange something minimal and self containing like that:
- Wtfplayer for DSD playout (astonishing sound). The developer is working on the Odroid ARM build (I will ask for BBB compatibility)
- BBB as computing (music on a USB key or SD card)
- Clock/Isolation board
- DSC2.5.2
- Wtfplayer for DSD playout (astonishing sound). The developer is working on the Odroid ARM build (I will ask for BBB compatibility)
- BBB as computing (music on a USB key or SD card)
- Clock/Isolation board
- DSC2.5.2
Update Botic with Amanero mute pin
Short instructions:
1. Login as root
2. Test the kernel:
It should read:
If it doesn't, then find the instructions to update to this release. I'm almost certain the driver I compiled will not work on other releases.
3. Download the updated driver:
4. [Optional] Install unzip if you don't have it already.
5. Unzip
This will create a folder botic-driver and extract the archive in it.
6. Go to folder and execute the script:
If you don't see any errors, you're good. Now is the time to configure.
7. Check if all is good by listing this folder:
You should see two new files:
8. The important file is amanero_mute_pins
It takes a bit mask, so for D5 on Cronus, do this:
Since the first three (D0-D2) are signal wires, 100 (binary 4) is the third pin after that (D3, D4, D5).
One can test this experimentally - when not playing, you should have HIGH on the said pin and when playing - LOW.
9. Important considerations:
9.1. miero indicated that you should have the two non-DSD lines free, but I'm not 100% certain. In any case, my
reads DD--
9.2. If you have the old version of DSC2, invert the
Mine reads 17409
There are instructions on miero's site.
9.3. To make all this permanent between reboots, edit the /boot/uEnv.txt file.
I have this for the items I mentioned above:
Finally, if all is good above at step 2 but it doesn't work at step 6 and 7, I should probably give you all compiled drivers, not only davinci.
Let me know.
Short instructions:
1. Login as root
2. Test the kernel:
Code:
uname -rIt should read:
Code:
4.8.13-botic7-rc33. Download the updated driver:
Code:
wget [url]https://github.com/luchoh/botic-dev/releases/download/mute-v48/davinci.zip[/url]4. [Optional] Install unzip if you don't have it already.
5. Unzip
Code:
unzip davinci.zip -d botic-driver6. Go to folder and execute the script:
Code:
cd botic-driver && ./install-davinci.shIf you don't see any errors, you're good. Now is the time to configure.
7. Check if all is good by listing this folder:
Code:
ls /sys/module/snd_soc_davinci_mcasp/parameters/You should see two new files:
Code:
amanero_mute_delay amanero_mute_pins8. The important file is amanero_mute_pins
It takes a bit mask, so for D5 on Cronus, do this:
Code:
echo 4 > /sys/module/snd_soc_davinci_mcasp/parameters/amanero_mute_pinsSince the first three (D0-D2) are signal wires, 100 (binary 4) is the third pin after that (D3, D4, D5).
One can test this experimentally - when not playing, you should have HIGH on the said pin and when playing - LOW.
9. Important considerations:
9.1. miero indicated that you should have the two non-DSD lines free, but I'm not 100% certain. In any case, my
Code:
cat /sys/module/snd_soc_botic/parameters/serconfig9.2. If you have the old version of DSC2, invert the
Code:
cat /sys/module/snd_soc_botic/parameters/dai_formatThere are instructions on miero's site.
9.3. To make all this permanent between reboots, edit the /boot/uEnv.txt file.
I have this for the items I mentioned above:
Code:
optargs=snd_soc_botic.serconfig=DD-- snd_soc_botic.dai_format=17409 snd_soc_davinci_mcasp.amanero_mute_pins=4Finally, if all is good above at step 2 but it doesn't work at step 6 and 7, I should probably give you all compiled drivers, not only davinci.
Let me know.
I am looking forward to getting my DSC2.5.2 board thru the group buy, in the mean time I have a few questions:
1. The instruction manual shows set up for Amanero board. However I am currently using DIYINHK XMOS board, in a linux system running at DSD512 and don't really want to buy a new USB board (especially when I have read in this thread that Amanero does not play well in Linux). So what are connections if we use an XMOS board? I assume that we need to input DSD left' DSD right, DSD clock and 3.3V to the DSC2 board, but its not clear which are corresponding input pins.
2. I will be dispensing with the output board and taking the output of the main board to my TVC (chinese eBay device, which I am happy with). This TVC has 2 primary coils, I use them in series and 'centre tap' on primary side is grounded. Now the diagram in the DSCv2 instruction manual for the LL1527XL shows the primary centre tap going to ground via a capacitor. Is this correct?
Thanks, Hazard
1. The instruction manual shows set up for Amanero board. However I am currently using DIYINHK XMOS board, in a linux system running at DSD512 and don't really want to buy a new USB board (especially when I have read in this thread that Amanero does not play well in Linux). So what are connections if we use an XMOS board? I assume that we need to input DSD left' DSD right, DSD clock and 3.3V to the DSC2 board, but its not clear which are corresponding input pins.
2. I will be dispensing with the output board and taking the output of the main board to my TVC (chinese eBay device, which I am happy with). This TVC has 2 primary coils, I use them in series and 'centre tap' on primary side is grounded. Now the diagram in the DSCv2 instruction manual for the LL1527XL shows the primary centre tap going to ground via a capacitor. Is this correct?
Thanks, Hazard
DSC pinout for Amanero board in correct orientation is attached. Pin1 is marked on PCB. Beware of huge pops when using XMOS USB board.
You can omit capaсitor from centre tap to ground.
We use slightly modified circuit, published by Andrea Ciuffoli at audiodesignguide
Attachments
Thanks Vit, sorry to be dumb but I just need to be clear on this - the attached diagram doesn't show 3.3V input (pins 9 and 10 on Amanero board based on diagram in the instruction manual). Does this mean that DSC 2.5.2 board doesn't need 3.3V input? DIYINHK board of course has 3.3V input so I will already have a voltage source if also required fpr DSC board.
Thanks, Hazard
No, you need 3.3V at pins 9-10 to power DSC.
Full pinout is here. Sorry, the previous one I did in a hurry and lost power pins.
Attachments
You will also need Hermes and clocks for Cronus.
I can attach a picture of my setup if you’re interested. I am also preparing to upload to github a version of the Cronus-DSC PCB, though I assume there would be some changes after I get the “group buy version“.
As it is now, the assembly is quite long and there won’t be too many enclosures that would take it.
Happy to collaborate on a PCB. My isolator PCB would be very easy to modify for BBB, just need to replace the Amanero header with the BBB header and route the tracks to the correct pins. Would remove the need for Hermes (though you might loose some of the Hermes functionality, like the battery back-up - need to look into that more) and be more compact. Alternatively, my board already has the interface between Cronus and V2.5.2 defined.
Which BBB header pins expose the mute and DSD-on flags with your Botic variant?
I need to get back to you on DSD-on. As for MUTE - any combination of D3-D7 - configurable via kernel driver parameter (text file)
OK, thanks. I'm just about to check out the BBB-Hermes again and dust-off some earlier PCB designs that I did when I was looking into a BBB/No DAC arrangement.
Please check this. Unfortunately I won't be able to spend much more time on this today, but if you find anything outstanding (like a file I forgot to commit), please let me know and I'll amend.
GitHub - luchoh/Cronus-DSC2
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I also ordered 6 of those at OSHPARK:
Cronus - DSC1/2 [Amanero] Header adapter
When I receive and test them and all works fine, I can send the excess to members here.
This is my first PCB project, so comments are more than welcome.
Me2, if possible
While waiting for 2.6.2, i got i7-3770K + Intel DZ77GA-70K + WiFi + 16GB RAM.
Testing NoDac - Xmos:
with jriver pops,
with Daphile pop only at start, after no pops at all (dsd256)
Hqplayer i still couldnt manage to work, maybe works only with amanero.
If someone could give me hand with instalation of Audiolinux image (img.gz) to SSD, i would be thankful.
From my experience to put SSD with separate Low noise regulator ( like TPS7A4700) makes better SQ.
Me2, if possible
While waiting for 2.6.2, i got i7-3770K + Intel DZ77GA-70K + WiFi + 16GB RAM.
Testing NoDac - Xmos:
with jriver pops,
with Daphile pop only at start, after no pops at all (dsd256)
Hqplayer i still couldnt manage to work, maybe works only with amanero.
If someone could give me hand with instalation of Audiolinux image (img.gz) to SSD, i would be thankful.
From my experience to put SSD with separate Low noise regulator ( like TPS7A4700) makes better SQ.
Let me clarify something first. The solution I develop only works with the combination below:
1. Software: HQPlayer -> NAA on BeagleBone Black with Botic driver.
2. Hardware: BeagleBone Black -> TwistedPear Hermes -> TwistedPear Cronus -> i2s with cables or my PCB -> DSC2.
So how you install HQPlayer is not relevant as long as you can install BBB/Botic + NAA.
Alternatively, you can replace HQPlayer with Roon and NAA with RoonBridge. It would still work. I tested it.
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I've been having a look at the TPA Hermes for BBB and I think that for the purposes of using a BBB to feed DSD to DSC2 we can use a much simpler arrangement that dispences with the Hermes and would be much more compact. I think the battery backup/shutdown can still be retained, which would be good for avoiding bricked BBBs.
I've started a new version of my isolator board that replaces the Amanero header with a BBB header with everything else staying the same. I now need to map the BBB header pins to the Cronus input header, via the isolator.
luchoh do you have a link/reference to which BBB header pins map to DSDL/DSDR/DSDclk/MCK-in/Mute/DSD-on?
I've started a new version of my isolator board that replaces the Amanero header with a BBB header with everything else staying the same. I now need to map the BBB header pins to the Cronus input header, via the isolator.
luchoh do you have a link/reference to which BBB header pins map to DSDL/DSDR/DSDclk/MCK-in/Mute/DSD-on?
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