Search found 227 matches

by octal
Tue May 06, 2014 9:57 am
Forum: Development Tools and Programming
Topic: Count number of transitions on a port
Replies: 7
Views: 5060

Re: Count number of transitions on a port

@GerhardNorkus No pb. This wasn't either my intention when I mentioned my previous experience with XMOS. I only wanted to mention that I know the tools and that I was looking to a technical solution even if it uses very advanced features of the chips and dev tools. Anyway, going to test various solu...
by octal
Mon May 05, 2014 6:37 pm
Forum: Development Tools and Programming
Topic: Count number of transitions on a port
Replies: 7
Views: 5060

Re: Count number of transitions on a port

You can actually see the counter getting updated if you use the "Waves" view. You access that by setting up the "Debug Configurations" to run as a Simulator. But there's a lot more to describe about that if you haven't yet invested the time in it.... Hi GerhardNorkus, I'm aware ...
by octal
Mon May 05, 2014 12:18 pm
Forum: Development Tools and Programming
Topic: Count number of transitions on a port
Replies: 7
Views: 5060

Count number of transitions on a port

Hello, I want to create a simple pulse counter. I'm using this simple code: void pulseCounter(server interface pulse_intf s_intf) { char x; p_in :> x; while (1) { select { case p_in when pinsneq(x) :> x: counter++; break; case s_intf.getCount() -> unsigned int return_val : // Set the return value re...
by octal
Mon May 05, 2014 6:59 am
Forum: Development Tools and Programming
Topic: generate 20MHz clock
Replies: 7
Views: 4956

Re: generate 20MHz clock

GerhardNorkus wrote:I assume he tried to adjust the PLL by using the sswitch setting functions.


+1
I done (in desperation) it when adding the attribute ReferenceFreq didn't worked (cause XN was not in the project).
by octal
Sun May 04, 2014 7:29 pm
Forum: Development Tools and Programming
Topic: generate 20MHz clock
Replies: 7
Views: 4956

Re: generate 20MHz clock

Well,
just tried it. It worked correctly. My mistake was that the XN file was not in my project. I had to right click on it and "IMPORT" it into the project to make things works as expected.

Thank you for your help :)
by octal
Sun May 04, 2014 6:32 pm
Forum: Development Tools and Programming
Topic: generate 20MHz clock
Replies: 7
Views: 4956

Re: generate 20MHz clock

Hi GerhardNorkus,
I already tried adding the ReferenceFrequency and setting it to 80 (and later to 320 and 400) MHz, but it didn't worked. I'll try again today by night and post any results.

Thx
by octal
Sun May 04, 2014 2:02 am
Forum: Development Tools and Programming
Topic: generate 20MHz clock
Replies: 7
Views: 4956

generate 20MHz clock

Hello, I'm fighting with XS1L at 400MHz with 20MHz crystal (I'm using an XK-1A), and I want to generate a 20MHz clock on a pin. I tried all fiddling with clock divisors, changing clock and refClock in the XN file ... but I can't got it to work. When I use for example a div == 5 do divide the 100MHz ...
by octal
Fri May 02, 2014 4:53 pm
Forum: Development Tools and Programming
Topic: New Programming Guide
Replies: 20
Views: 10083

Re: New Programming Guide

I read part of this new guide. Nice work. I did understood nothing in section 2.2.1- Interface connections . I think a task oriented presentation with small examples would make this thing a lot easier (or maybe I'm too much influenced by the old book and the description of inter-task comm using chan...
by octal
Sat Apr 26, 2014 10:09 pm
Forum: startKIT
Topic: Doubt about xcore processor ?
Replies: 3
Views: 4955

Re: Doubt about xcore processor ?

Hi SUNROC1, Xmos is a hardware parallel architecture, i.e. when STM32F4xx is servicing an interrupt, the main program is completely stoped, while in XMOS you can dedicate a core to service a task when the main task is still executing. The main advantage in favour of XMOS, from my point of view, is d...
by octal
Mon Apr 21, 2014 1:49 pm
Forum: Other XMOS Development Kits
Topic: SliceKit with SDRAM slice card
Replies: 4
Views: 4838

Re: SliceKit with SDRAM slice card

Hi Berni, some SDRAMs have autorefresh capabilities. The main choice of SDRAM instead of SRAM (which I'm using now) is the price. When trying to find quick access SRAM/SDRAM, the price for SRAMs (for 10ns for example) is arround 8 euros for 512KBytes, while 4 or more times capacity SDRAM (8MBytes) a...