Search found 34 matches

by hamtam
Mon Aug 12, 2019 10:16 am
Forum: Development Tools and Programming
Topic: xTime Composer connection failed
Replies: 5
Views: 2721

Re: xTime Composer connection failed

Thank you. I can connect now but after I imported "sw_usb_audio-[sw]_6.15.2.zip" all folders show a "?".
by hamtam
Fri Aug 09, 2019 1:18 pm
Forum: Development Tools and Programming
Topic: xTime Composer connection failed
Replies: 5
Views: 2721

xTime Composer connection failed

Yesterday I used xTimeComposer Version 14.3.2 without any problems. Today I changed to Version 14.3.3 and nothing is working any more. Neither 14.3.2 nor 14.3.3. I am using Debian 9 with KDE. I can start the composer but get now online connection (although I disabled the certificate validation). I c...
by hamtam
Wed Aug 07, 2019 12:52 pm
Forum: Development Tools and Programming
Topic: use uart for debug messages
Replies: 2
Views: 1259

Re: use uart for debug messages

Okay it was not that easy. But I got it working. I added in the main.xc form the USB Audio ... par { on tile[XUD_TILE]: par { //added #ifdef XSCOPE //on tile[0]: xscope_user_init(); on tile[1]: xscope_user_init(); #endif //added end #if (XUD_TILE == 0) /* Check if USB is on the flash tile (tile 0) *...
by hamtam
Wed Aug 07, 2019 9:38 am
Forum: Development Tools and Programming
Topic: use uart for debug messages
Replies: 2
Views: 1259

use uart for debug messages

I try to get debut messages on the UART inter interface. I use the xCORE-200 Dev Board together with the xTAG3 v1.2. I want to have messages like "printf("Value=%i", var);" but currently I get nothing. I use "sw_usb_audio-[sw](6.15.2).zip" from the xmos. I tried the fol...
by hamtam
Fri Aug 31, 2018 9:13 am
Forum: Development Tools and Programming
Topic: xrun: Cannot load image, XCore 0 is not enabled
Replies: 3
Views: 2859

Re: xrun: Cannot load image, XCore 0 is not enabled

OK we checked the board. Our manufacturer removed the solder paste under the chip from the solder mask! With a bit of solder paste under the chip we have no problem any more.
by hamtam
Mon Aug 20, 2018 6:39 pm
Forum: Development Tools and Programming
Topic: xrun: Cannot load image, XCore 0 is not enabled
Replies: 3
Views: 2859

Re: xrun: Cannot load image, XCore 0 is not enabled

Thank you for your quick reply. I will push our manufacturer to solder the IC more careful. Maybe they need to extend the hold time during the reflow. I will come back with our solution.
By the most of the cards are working well with about 75% yield.
The second batch had not even 50%!
by hamtam
Mon Aug 20, 2018 2:44 pm
Forum: Development Tools and Programming
Topic: xrun: Cannot load image, XCore 0 is not enabled
Replies: 3
Views: 2859

xrun: Cannot load image, XCore 0 is not enabled

What kind of problem do I have if I get the following message: xflash conet_8ch.xe --boot-partition-size 0x80000 --quad-spi-clock 15.62MHz xrun: Cannot load image, XCore 0 is not enabled real 0m8.852s user 0m6.867s sys 0m0.156s I think the power stage is all right first appears 3,3V and about 2,5 to...
by hamtam
Wed May 23, 2018 11:30 am
Forum: Projects
Topic: 8-ch audio card USB Bus Problems
Replies: 41
Views: 75454

Re: 8-ch audio card USB Bus Problems

The main issue was that the firmware did not wait until the PLL has locked. Thus the device could not reply properly to the USB Audio request of the host. You have to wait until mclk is stable before reply on the USB Bus. What we saw on the board (on the oscilloscope) was no or a wrong MCLK Signal. ...
by hamtam
Mon May 07, 2018 2:37 pm
Forum: Projects
Topic: 8-ch audio card USB Bus Problems
Replies: 41
Views: 75454

Re: 8-ch audio card USB Bus Problems

We have the HW revision 1.52 now. It still had the problems from the former hardware until we dived deeper into the Firmware. After we increased the AUDIO_PLL_LOCK_DELAY to 40000000 which is about 400 ms the most of the devices are running without problems. But still there are some devices which doe...
by hamtam
Fri Apr 06, 2018 1:43 pm
Forum: Projects
Topic: 8-ch audio card USB Bus Problems
Replies: 41
Views: 75454

Re: 8-ch audio card USB Bus Problems

I am not sure if it is related to our problem the post starts in 2012 and had the last message in 2014. As we did not have any problem like these with the XMOS reference board. The mixer is working fine also. Windows also complains. It can not start the device. Here I found a card wich runs if the m...