Search found 2674 matches

by Panu
Today 14:00
Forum: Stand-Alone Applications
Topic: Requesting clarifications on VS1005 capabilities..
Replies: 4
Views: 116

Re: Requesting clarifications on VS1005 capabilities..

Hi! Great to hear that we have a good offering :) Anyway, we'll do what we can to support you. Henrik has a better grasp than me about the performance of different SD cards with his Hi-Res Recorder. I think his code probably relies on the external SRAM, but I think that most SD cards work with just ...
by Panu
Today 13:06
Forum: VS1005 and VSOS Software
Topic: VS1005 4-channel HiRes Recorder
Replies: 18
Views: 2609

VS1005 Breakout Board Mk2 Hi-Res Recorder flash image

Dear All, Here's the firmware image of the VS1005 Break-Out Board Mk2 running Hi-Res recorder. This is what we write to the internal flash of the VS1005 in production. To reflash the breakout board, connect a USB UART cable to the breakout board RX, TX, GND and VHIGH pins, or use the programmer boar...
by Panu
Mon 2019-06-17 10:16
Forum: VS1005 and VSOS Software
Topic: Memory management issues
Replies: 19
Views: 217

Re: Memory management issues

Hi! Is it possible to use the VLSI VS23S010 or VS23S040 for additional (I)RAM? Not as such, no. The way to free memory is to split the application into a wide tree structure with a small root program that holds all the persistent data and calls as many leaf programs as possible to do some small thin...
by Panu
Fri 2019-06-14 17:27
Forum: VS1005 and VSOS Software
Topic: Memory management issues
Replies: 19
Views: 217

Re: Memory management issues

It seems that every time I manage to brick the dev board and restore it successfully, the amount of available memory keeps decreasing. This is only the second time I've bricked and restored it. Do you have any clue what is causing this? The only cause would be that the firmware and/or kernel versio...
by Panu
Thu 2019-06-13 11:37
Forum: VS1005 and VSOS Software
Topic: Memory management issues
Replies: 19
Views: 217

Re: Memory management issues

Hi, probably some binary which is loaded at startup is corrupted.. Does the kernel boot into USB mode with GPIO0 button (S1) pressed? If so, then reformat the flash and copy all files. If not, then follow the complete unbricking procedure, complete with reflashing the kernel.

-Panu
by Panu
Thu 2019-06-13 10:59
Forum: VS1010 Forum
Topic: VS1010 SPI Nand Flash support
Replies: 7
Views: 815

Re: VS1010 SPI Nand Flash support

Hi! Can you measure your supply voltages during operation? What you describe is what I would expect to happen if there are glitches in the power supply, leading to misprogrammed blocks or read errors sometimes. Can you try adding large capacitors and see if that would have any effect; that could hin...
by Panu
Wed 2019-06-12 9:13
Forum: VS1010 Forum
Topic: VS1010 Battery Charging
Replies: 5
Views: 80

Re: VS1010 Battery Charging

That's great. Does the amount of current in different settings seem useful to you? Which settings are you planning to use?

-Panu
by Panu
Wed 2019-06-12 9:11
Forum: VS1005 and VSOS Software
Topic: VS1005 - Utilising the NFCE/GPIO0_11 Pin as a GPIO
Replies: 7
Views: 74

Re: VS1005 - Utilising the NFCE/GPIO0_11 Pin as a GPIO

Ok, the internal flash doesn't use IOCHANNEL so that's one less thing to worry about. Great if it works for you, hopefully there will be no problems.

-Panu
by Panu
Sun 2019-06-09 19:00
Forum: VS1005 and VSOS Software
Topic: VS1005 - Utilising the NFCE/GPIO0_11 Pin as a GPIO
Replies: 7
Views: 74

Re: VS1005 - Utilising the NFCE/GPIO0_11 Pin as a GPIO

Hi! Hmm, the kernel initializes the external SPI flash to be at IOCHANNEL 3, so you'll at the very least need to poke the DevHwSpiHwInfo of struct device_descriptor spi to use just the XCS0 IO pin. That can be done by a custom small app that you run from the config.txt, but it's not exceedingly simp...
by Panu
Fri 2019-06-07 10:48
Forum: VS1010 Forum
Topic: Aligned memory support driver for VS1010D dlx loader
Replies: 0
Views: 33

Aligned memory support driver for VS1010D dlx loader

Dear Signal Processing Enthusiasts, Here is a small driver that implements aligned memory support for the VS1010D library loader. It's useful especially for signal processing applications. To use the driver, place the ALIGN.DLX file to your SYS folder and add ALIGN to the beginning of your config.tx...