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by koalo
Thu May 16, 2013 2:08 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Ok - I see.
The problem is, that you are in a directory with a colon.
Please rename it.
by koalo
Thu May 16, 2013 1:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Please run a full command sequence and put everything (commands and outputs) into pastebin.
by koalo
Thu May 16, 2013 1:48 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

What is your CCPREFIX etc?
by koalo
Thu May 16, 2013 1:28 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Sniper435 wrote: Makefile:114: *** multiple target patterns. Stop.
What are the commands that you use for compilation?
by koalo
Wed May 15, 2013 3:16 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

steveha wrote:I am using TCXO 11.2896MHZ with binary counter to generate the requied LRCK 44.1KHz( Fs ) and BCK 2.8224MHz( 64Fs ).
Sounds good. Only to be sure: Do you have measured the frequencies? The error you described happened to me every now and then, but each time it was a wrong external clock.
by koalo
Wed May 15, 2013 3:03 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

steveha wrote:Last part of System Log ...
I know - there is a bug in the DMA engine code, but this has nothing to do with your problem.
by koalo
Wed May 15, 2013 2:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

steveha wrote:Driver is sndrpitda1541a [snd_rpi_tda1541a]
As far as I know, the TDA1541A does not support creating the I2S clocks. Do you have an external clock generator?
by koalo
Wed May 15, 2013 2:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

steveha wrote:Just completed my first test on I2S slave
Which audio codec do you use? And which driver?
by koalo
Wed May 15, 2013 9:12 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

You mean a converter to match the electrical levels of an SPDIF or the data format is also different? The data format is different. It could be theoretically possible to fake a SPDIF format over I2S, but this means lot of work and there is a big chance of a total fail. If you look at the schematics...
by koalo
Sun May 12, 2013 8:54 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

koalo wrote:CPLD ISP programming by the Raspberry Pi would be cool :-D
Actually that is possible :-)
https://github.com/Guzunty/Pi/wiki

Sounds very nice! I will give it a try :-)
by koalo
Fri May 10, 2013 2:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Regarding the multichannel I/O one alternative is to use the lsb's in 32-bit word to specify frame and then in CPLD code route the output to correct stereo I2S channel (or mux the input channel and mark it with correct frame identifier). So for 8 ch I/O you just need to quadruple the frame rate mea...
by koalo
Fri May 10, 2013 2:35 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Hi Gordon, I would be happy to make you something. That is a really nice offer! As I want to learn how it works, I am currently trying to build a CS42448 board with Eagle PCB. Maybe you could have a look at my layout later. What kind of quality do you want? That kind of quality that doesn't make the...
by koalo
Fri May 10, 2013 2:09 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

By now I am losing track :-) Maybe it would be good to split this topic....
duxedo wrote:Actually you can deduce PCM_FS signal with FPGA....
That sounds really interesting. What are you trying to do and why?
by koalo
Tue May 07, 2013 8:05 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Meyas wrote:So I think I should solder a TDA1541a DAC. :|
Not so fast ;-)
- How did you connect the TDA1541? How long are the cables?
- Have you tried other sampling rates? (i.e. 44.1 kHz and 48 kHz)
by koalo
Tue May 07, 2013 4:48 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

0xFF wrote:I just received TDA1543 (without "A") and want to be sure if it will works with current driver.
I don't know the difference, but I am quite sure that it works, because I use the I2S standard - I never heard about "Japanese input format".
by koalo
Mon May 06, 2013 10:26 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

steveha wrote:Is it possible to set up a prototype to operates at 32 bit 64fs mode and without any resamplying ?
I already created issues for that:
https://github.com/koalo/linux/issues/1
https://github.com/koalo/linux/issues/4

Although, I would like to handle issues #2 and #5 first (hopefully today).
by koalo
Sun May 05, 2013 9:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running?

I will take a stab at getting your driver to work with some of the various dac chips I have here. If you have any questions about expanding the driver, I have tons of experience in this area. That sounds great! In that case I have a question right away: Do you (or anyone else) know any nice codec t...
by koalo
Sun May 05, 2013 3:16 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

I want to connect the SI4735 to the RPi using I2S. Sounds like a nice project! The driver should handle that fine. Your most laborious part from my point of view is to write the code to control the tuner itself (tuning, volume etc.) The 4735 has an ADC for sending the audio out over I2S. Does that ...
by koalo
Sun May 05, 2013 1:09 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

By the way: If someone has time left to contribute to the project, it would be great to test device tree with the current kernel. I think, that if this would work, it would lead to a much better handling of all the different codecs, but a short test only produced a colorful startup screen :-)
by koalo
Sun May 05, 2013 12:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Would you consider the driver sufficiently mature to put in requests to RaspBMC and OpenElec that they consider rolling it into their distributions? It don't think so, because there are some issues left. After they are fixed and the driver is properly tested, it would be good to have someone from t...
by koalo
Sun May 05, 2013 12:13 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

I'm very interested in how you implemented this. I am happy to answer your questions! Maybe I will write a text about the technical side someday. I did wonder if cyclic DMAs could be done, but was worried there might have been a clash writing to the DMA descriptors/control blocks when they might've...
by koalo
Sat May 04, 2013 8:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

Hi Phil, I am very happy, that it works for you! And thanks for your kind words, but I have to emphasize your previous work! I didn't even knew where to start, before you uploaded your DMA driver. It would have taken me ages to figure out how the peripherals (I2S and DMA) work on the Raspberry Pi. K...
by koalo
Sat May 04, 2013 6:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

I just activated the github issue tracker.

https://github.com/koalo/linux/issues

Maybe it is better to discuss this issue there:

https://github.com/koalo/linux/issues/1
by koalo
Sat May 04, 2013 6:20 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running? (answer is yes!)

The main difference between them is ESS9018 is running on 64fs bit clock I2S and TDA1541A only does 48fs. In fact the driver currently runs at 40fs for 16 bit (that is the trick to get better clocks out of the Raspberry Pi). I don't know if that is a problem for some codecs, but let me know if it i...
by koalo
Sat May 04, 2013 3:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread. [I2S works]
Replies: 970
Views: 522981

Re: I2S: Anyone got it running?

Well done. I would like to inform you that your drivers are really great. I have been suffering from USB packet loss for a long period. :evil: Your I2S driver is just another story - smooth and noise free. :D Thank you :-D It is great, that someone - besides me - gets my driver running! So far, I h...

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