Search found 2743 matches

by Panu
Fri 2020-09-04 10:58
Forum: Microcontroller Software
Topic: Help: Proposed Method to Burn eeprom With uC Instead of Computer
Replies: 9
Views: 367

Re: Help: Proposed Method to Burn eeprom With uC Instead of Computer

eeprom.img is the complete image. It must have a known name (eeprom.img) because that file name is hardcoded in the prommer binary (it uses our very old "vs3emu" uart protocol to open a file in the PC and read from that file using the uart). That's why the script takes some file name and copies it t...
by Panu
Sun 2020-08-30 20:15
Forum: DSP and Audio Software
Topic: VS1053B: Can We Remove or Bypass Unused Code?
Replies: 4
Views: 284

Re: VS1053B: Can We Remove or Bypass Unused Code?

We need more information from you. What is your most urgent goal and the acceptance criteria to determine if that goal has been reached or not? You say you are using our off-the-shelf solution for the EQ. And you also say that you want to simplify the code and your development effort. Could you clar...
by Panu
Sun 2020-08-30 20:04
Forum: DSP and Audio Software
Topic: Website Down?
Replies: 3
Views: 205

Re: Website Down?

Seems to be working fine at the moment
by Panu
Fri 2020-08-28 8:23
Forum: DSP and Audio Software
Topic: How to Reduce VS1053B Power Consumption?
Replies: 3
Views: 216

Re: How to Reduce VS1053B Power Consumption?

Hi! I'm not an expert regarding the parametric EQ, but the less processing you do, the less CPU power you need. Specifically tailored filters tend to use less memory than generic ones. Explore which clock multiplier you need. The slower the clock, the less power the chip uses. For one application th...
by Panu
Fri 2020-08-28 8:16
Forum: DSP and Audio Software
Topic: VS1053B: Can We Remove or Bypass Unused Code?
Replies: 4
Views: 284

Re: VS1053B: Can We Remove or Bypass Unused Code?

Hi! I'm not entirely sure what is your point of view in this: what are you trying to save? Power? CPU time? Memory space? Those features are either in hardware or ROM. The ROM code cannot be modified, it's really ROM (not flash, not eprom, not modifiable, ever.) but if you load your own code into th...
by Panu
Fri 2020-08-14 10:07
Forum: VS1010 Forum
Topic: VS1010 and eMMC
Replies: 14
Views: 6026

Re: VS1010 and eMMC

To initialize factory-emptied eMMC card using USB: - Reboot VS1010D to runlevel 1 (USB RAMDISK). - Connect Windows PC. - Disk called "VS1010C_RAM" will come up (it's unchanged from VS1010C, so the name still says VS1010C even though it's VS1010D, sorry.) - copy the "eMMC_ramdisk_usb_init_n3.img" fil...
by Panu
Fri 2020-08-07 10:26
Forum: VS23S010 Forum
Topic: Protoline voltage levels
Replies: 2
Views: 549

Re: Protoline voltage levels

Hi! Yes, the protoline luma value (last 8 bits) is a linear output current value from 0mA to about 60% white. It can be set separately for each protoline pixel (8 master clocks or 1 color subcarrier cycle). Please note that VS23S040 has 4 separate dies, so the exact level of each output can be a lit...
by Panu
Tue 2020-06-09 22:33
Forum: VS1005 and VSOS Software
Topic: USB Mass Storage Device doesn't work.
Replies: 16
Views: 2192

Re: USB Mass Storage Device doesn't work.

Thanks a lot! Hmm, now that it boots, does the IOVDD rise to 3.3 volts?
by Panu
Mon 2020-06-08 14:05
Forum: VS1005 and VSOS Software
Topic: USB Mass Storage Device doesn't work.
Replies: 16
Views: 2192

Re: USB Mass Storage Device doesn't work.

Hmm. ok, understand. Like Henrik said, this was coded blind, we didn't have this flash IC at hand to test it.
Ok, please post all UART output from boot until the formatting fails. Maybe we can spot something in the output.

-Panu
by Panu
Thu 2020-06-04 10:24
Forum: VS1005 and VSOS Software
Topic: USB Mass Storage Device doesn't work.
Replies: 16
Views: 2192

Re: USB Mass Storage Device doesn't work.

Hi! Any idea why i can't format the disk? Yes. SPI flash chips that don't have page write to RAM buffer are not very common and writing to them is painfully slow, so the kernel doesn't do it. The prommer has this option mainly to be able to write factory fixed firmware to the chip. It's ok for appli...