Fifo parameters reduced? You too had problem with stuck upload?
I'll try tomorrow or even today on a PC with real serial port.
Regards
As I described in the Soekris DAC build thread, I use the following convertor:
PL2303TA USB TTL to RS232 Converter Serial Cable module for win 8 XP VISTA 7 8.1 | eBay
It is very cheap, easy to implement and works fine.
I use Terraterm and followed these instructions:
Soekris dam 1021 R-2R DAC ILLUSTRATED GUIDE | H i F i D U I N O
(and add the update command in case of firmware upgrade)
The v1.19 update worked fine for me. I did not draw conclusions regarding the updated filters yet. For now, I reverted back to the party pack with the EQHQ_lpbr_b4 filter. This is still my favorite filter, though I should spend more time to compare it to the new filters.
PL2303TA USB TTL to RS232 Converter Serial Cable module for win 8 XP VISTA 7 8.1 | eBay
It is very cheap, easy to implement and works fine.
I use Terraterm and followed these instructions:
Soekris dam 1021 R-2R DAC ILLUSTRATED GUIDE | H i F i D U I N O
(and add the update command in case of firmware upgrade)
The v1.19 update worked fine for me. I did not draw conclusions regarding the updated filters yet. For now, I reverted back to the party pack with the EQHQ_lpbr_b4 filter. This is still my favorite filter, though I should spend more time to compare it to the new filters.
@Soekris: thank you for the firmware update, it is much appreciated!
I thought that the PN/PI commands were already supported in previous firmware?
Regarding future firmware updates, hereby my wishlist...
(most important wishes on top)
1. Feature to test for bit perfectness. E.g. it would be great if I could read out 1kbyte chunks from the DAC via serial to test my audio signal path through Windows. The chunk could start once non-zero samples are found.
2. Way to read out (average) level of jitter corrections by PLL. With this a more scientific way to compare jitter performance of input solutions would be available.
3. 28 or 32 bit input via USB/I2S. Gives more resolution in case of filter processing on PC side.
4. Clip counter readout via serial. Detects clipping in internal DAM filter processing (or at output). With reset option.
5. Option to disable/enable any IIR filter (either in persistent or non-persistent way). Even better would it be if IIR filter parameters could be updated on the fly (to allow for EQ reconfigurations).
A feature to read out audio data chunks (& measuring jitter level) would greatly help in analyzing the root causes for loss in audio performance between different audio APIs. I hear a clear difference in audio quality between ASIO and kernel streaming. I believe kernel streaming is the more accurate path (as dynamics and separation of layers are better), but I would like to know for sure. I will try out (exclusive mode) WASAPI on short term as a 2nd reference.
My firmware feature wish list:
1.) I also would like to have informations on clipping/saturation - perhaps more detailed: saturation at intermediate frequency level (FIR1-level), saturation at final frequency level (FIR2-level), clipping due to mapping to the R2R ladder.
Also it would be nice, next to the serial readout, to have a clipping indicator light via an unused pin - if possible.
2.) I also would like to have 28/32 bit input.
3.) A possible real bypass of the FIR1 section with 352.8/384kHz input. currently there is an unavoidable attenuation due to the multiplicator restricted to be less than 1.
4.) A possibility to set the maximum level of the volume control by the settings.
1.) I also would like to have informations on clipping/saturation - perhaps more detailed: saturation at intermediate frequency level (FIR1-level), saturation at final frequency level (FIR2-level), clipping due to mapping to the R2R ladder.
Also it would be nice, next to the serial readout, to have a clipping indicator light via an unused pin - if possible.
2.) I also would like to have 28/32 bit input.
3.) A possible real bypass of the FIR1 section with 352.8/384kHz input. currently there is an unavoidable attenuation due to the multiplicator restricted to be less than 1.
4.) A possibility to set the maximum level of the volume control by the settings.
I've sucessfully uploaded and updated new 1.19 firmware. Now it reads rev 1.19 and FPGA rev 1.19. Later today I'll try if everything is OK soundwise (no distorted sound, input lock etc.)
Firmware update was successful, in my case, only with old PC with real COM ports and Hyperterminal. (Windows XP)
Regards
Firmware update was successful, in my case, only with old PC with real COM ports and Hyperterminal. (Windows XP)
Regards
Everything OK. DAM sounds good, listening SOFT filter. Can say much about sound difference, but it works which is good
Hmm...downloading 1.19 goes fine and says ‘downloaded and programmed’. But when I type the ‘update’ command it comes up with Incorrect Image to the right of ‘are you sure?’ Upon typing y it says Invalid Command. And after power cycling the green lock LED is solid on music but no sound.
Anyone had this? Must be missing something but I’ve tried going back to the 1.06 full package - which also says Incorrect Image after update but actually plays.
Anyone had this? Must be missing something but I’ve tried going back to the 1.06 full package - which also says Incorrect Image after update but actually plays.
I try to build a balance dac with two dam1121,I set one dam1121 MCFG3..0 is 0010 and connect a external SI570 with I2C bus for left channel; I set the other dam1121 SCFG3..0 is 0101,but the master board isn't lock.Master serial port print "M3" and" L000",and the slaver board serial port print" S4"" L384",I can't understand what M3 and S4 with my MCFG&SCFG setting.I have try with I2S and spdif ,the LOCK LED in master is always blink.What might be the problem?