Search found 358 matches

by Berni
Tue Apr 22, 2014 8:33 pm
Forum: Other XMOS Development Kits
Topic: SliceKit with SDRAM slice card
Replies: 4
Views: 6158

Re: SliceKit with SDRAM slice card

Well auto-refresh just means that you send it a single command and it refreshes an entire page on its own, still need to manually send that command every so often for each page. There is a kind of SDRAM that does all of it automatically called PSRAM, but its still not going to be as cheep as that im...
by Berni
Sun Apr 20, 2014 10:30 pm
Forum: Other XMOS Development Kits
Topic: SliceKit with SDRAM slice card
Replies: 4
Views: 6158

Re: SliceKit with SDRAM slice card

I would assume its 33.3MHz since thats about the fastest speed you can bit bang stuff at on a regular 400MHz chip.

Just keep in mind that SDRAM is a bit annoying in that you have to give it refresh commands every few milliseconds or you lose the data in it, if possible its a good idea to use a SRAM.
by Berni
Wed Feb 26, 2014 10:47 am
Forum: startKIT
Topic: Could the StartKit be a cryptocoin ASIC miner host?
Replies: 2
Views: 5437

Re: Could the StartKit be a cryptocoin ASIC miner host?

Short answer: Nope Long answer: You need a USB host port with hub capability and a ethernet port, none of witch the StartKit has. It might be possible to add an external USB and ethernet PHY, and i dont think you can fit the code for all that in to 64K of memory and it takes a lot of extra hardware ...
by Berni
Sun Dec 08, 2013 9:17 am
Forum: Other Applications
Topic: what is a decoupler?
Replies: 3
Views: 4192

Re: what is a decoupler?

Its just basically the read side of a FIFO. It grabs samples from the FIFO and sends them out a channel. It probably also does some interaction with the rest of the USB code. You proabobly could in theory get rid and interface to the FIFO directly if you really wanted to save 1 thread but its probab...
by Berni
Sun Dec 08, 2013 9:08 am
Forum: Projects
Topic: Two-wheeled balancing robot
Replies: 7
Views: 9359

Re: Two-wheeled balancing robot

Nice work, seams to be working rather well. I never looked at the XC-1 board but if you have acess to the first 4 IO pins on core 0 and can get to the BOOTx pins you should be able to add some flash to it. As for using an android stick its pretty much the same as any linux running ARM board like a r...
by Berni
Tue Nov 26, 2013 5:51 pm
Forum: General Questions
Topic: Xcore page logon repeat over squid proxy
Replies: 3
Views: 6092

Re: Xcore page logon repeat over squid proxy

If nothing else solves your problem use a free VPN to bypass all of the proxy stuff.
by Berni
Sun Nov 24, 2013 9:29 am
Forum: Projects
Topic: Android port to XMOS ... any interest?
Replies: 4
Views: 7796

Re: Android port to XMOS ... any interest?

Well it is sort of like java so there is not going to be incredible speed from it and you will most likely have to run it on a single thread. But i think what would mostly be a problem is memory. 64K is not a lot when you have to keep your program in ram as well. So in the end you are left with not ...
by Berni
Fri Nov 22, 2013 9:33 am
Forum: Other XMOS Development Kits
Topic: XTAG2 1V0 vs 1V2 - Issues?
Replies: 7
Views: 7643

Re: XTAG2 1V0 vs 1V2 - Issues?

The first versions of the USB Audio 2.0 reference design boards had a quite common problem because of improper supply and reset line sequencing. You could sometimes fix it by plunging it in to USB and then very quickly unplugging and replugging it in within a fraction of a second. For the driver iss...
by Berni
Thu Oct 31, 2013 2:36 pm
Forum: Latest news
Topic: New xCORE-XA device with ARM Cortex M3
Replies: 11
Views: 12854

Re: New xCORE-XA device with ARM Cortex M3

Well you can still implement a memory controler in the xmos chip and use it to interface to external memory. The big memorys are DRAM based anyway so they need a controller to interface them to the memory bus anyway. But there is still the question how many address lines the EBI interface has and ho...
by Berni
Wed Oct 16, 2013 9:02 am
Forum: Latest news
Topic: Help us get startKIT started!
Replies: 16
Views: 13799

Re: Help us get startKIT started!

Wow sure haven't expected that one, and at 15 bucks id sure say its a proper price for hobby use. Its cheep enough to just leave the board permanently soldered in to a project and just buy a new one, and you don't even need a XTAG dongle. You might possibly want to try coaxing some of the hobbyist o...