Search found 37 matches

by joe6486
Mon 2020-10-26 14:31
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

Re: VS1010 feature questions

Thanks! Clever hack, but if there's no cleaner way I'll just write a routine to do it properly. Just didn't know if there was something already existing.

Just as a feature idea, it would be handy to run scripts intentionally like config.txt, like batch files in Windows.
by joe6486
Fri 2020-10-23 15:03
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

Re: VS1010 feature questions

Thank you. This will be purely UART control by a host microcontroller for this design. I have accommodation for full powerdown by just removing the 5V feed elsewhere, so that's probably the most definitive way (though I have to use care that data pins are not held high by something elsewhere, like t...
by joe6486
Thu 2020-10-22 14:32
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

Re: VS1010 feature questions

Got it, thanks. I'll spend some time this weekend exploring the ROM and other internals. I'm so close to what we need without any custom software anyway but I am intrigued by future possibilities with this chip. In the case of the sdcard getting stuck, I've only seen it freeze the system, so there i...
by joe6486
Wed 2020-10-21 18:43
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

Re: VS1010 feature questions

Thanks! I also did not receive a notification of your response. I do have the book and am aware of the booting procedure. I had incorrectly assumed that the config.txt should be in the f:\sys folder rather than root, that was the issue. Thanks for clearing that up. I am surprised to hear that the in...
by joe6486
Thu 2020-10-15 15:29
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

Re: VS1010 feature questions

Hi, is anyone able to answer these questions?
by joe6486
Fri 2020-10-09 21:42
Forum: VS1010 Forum
Topic: VS1010 feature questions
Replies: 9
Views: 580

VS1010 feature questions

I'm just becoming acquainted with the VS1010, and am exploring the minidemo. I have a few questions - 1. CONFIG.TXT only runs automatically from the sdcard, and not the internal SPI flash, correct? Is there a way to run it automatically from internal SPI flash upon booting? I suppose f:sys/boot.dlx ...
by joe6486
Thu 2020-10-08 18:31
Forum: VS1010 Forum
Topic: Minidemo / example circuit bypass caps
Replies: 2
Views: 155

Re: Minidemo / example circuit bypass caps

If I may, I see some similar decisions for the USB pins, which are located within the analog "zone". In the book, the USB ground (67) is AGND, but the most recent schematic shows GND, which makes more sense. It's curious that the USB pins are pulled up to AVDD, but across 470k (book) or 1Meg (schema...
by joe6486
Thu 2020-10-08 15:00
Forum: VS1010 Forum
Topic: VS1010 as general-purpose controller/DSP
Replies: 2
Views: 140

Re: VS1010 as general-purpose controller/DSP

Many thanks! Seems that this might be viable, it's certainly worth looking into further, though it's a longer term project. I'm looking forward to getting more familiar with the internals of VDSP.
by joe6486
Wed 2020-10-07 21:18
Forum: VS1010 Forum
Topic: VS1010 as general-purpose controller/DSP
Replies: 2
Views: 140

VS1010 as general-purpose controller/DSP

I originally discovered the VS1010 when searching for a simple MP3 decoder IC, with microsd reading capability and USB. Seems that more or less duplicating the minidemo will satisfy this design. In looking further, it seems that this might be a rather useful general-purpose integrated microcontrolle...
by joe6486
Sat 2020-10-03 20:03
Forum: VS1010 Forum
Topic: Minidemo / example circuit bypass caps
Replies: 2
Views: 155

Minidemo / example circuit bypass caps

I noticed that CVDD and IOVDD are partially bypassed to AGND rather than GND on the minidemo datasheet, but not the VS1010 datasheet. (Pin 43 and 46 through the 100nF. 10uF is to GND) Just curious at this choice. Seems that GND would be the proper reference. Maybe it was just a little bug/oversight ...