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Nzc's Content
There have been 17 items by Nzc (Search limited from 14-May 23)
#28779 TLC5940
Posted by Nzc on 10 May 2012 - 04:52 PM in General Discussion
#28716 TLC5940
Posted by Nzc on 09 May 2012 - 02:11 PM in General Discussion
P.S. You can also attach files just here... :-)
Ok, let's start with that. I think the driver will need some work still. I'll post code and pictures when I get back home tonight.
#28926 TLC5940
Posted by Nzc on 12 May 2012 - 06:53 PM in General Discussion
#28736 TLC5940
Posted by Nzc on 09 May 2012 - 07:11 PM in General Discussion
#28812 TLC5940
Posted by Nzc on 11 May 2012 - 11:31 AM in General Discussion
#28739 TLC5940
Posted by Nzc on 09 May 2012 - 07:29 PM in General Discussion
#29018 TLC5940
Posted by Nzc on 14 May 2012 - 03:12 PM in General Discussion
#28757 TLC5940
Posted by Nzc on 09 May 2012 - 09:10 PM in General Discussion
@nzc: why did you say vprg is not wired out? From the pictures and the schematic, it looks just right there!
Andrea
It's wired, but you cannot set a value directly on it on the Sparkfun board. It's not wired to a terminal. There are a bunch of small holes, I guess I could solder it to one of those if needed. I just hooked it up to a small scope, and the output looks fine to me. I am hooking up an RGB led to it. I see red and blue ok, but somehow the signal collapses quite a bit when the LED is connected. Oh well, that's for tomorrow. Off to bed for me
#28705 TLC5940
Posted by Nzc on 09 May 2012 - 10:07 AM in General Discussion
#28758 TLC5940
Posted by Nzc on 09 May 2012 - 09:14 PM in General Discussion
@NZC
I thank you really much, because at last I found my problem: one of the wires I use on my breadboard was partially broken, or better, could not make a right contact on the netduino. Since I saw that the led pulsed erratically, I started to change the wires one by one, and I found the faulty one. Once I changed it, everything was ok!!! :-((((((((((
If you didn't gave me all the indications to have a functioning solution (thanks to the schematic on sparkfun too!) I could never think to a faulty wire! :-)
Andrea
NP! Happy to help. I'll brush up the code a bit and put it on sourceforge or so. Isn't there a central repo to place modules like this?
#28817 TLC5940
Posted by Nzc on 11 May 2012 - 12:44 PM in General Discussion
#28769 TLC5940
Posted by Nzc on 10 May 2012 - 11:31 AM in General Discussion
#28937 TLC5940
Posted by Nzc on 12 May 2012 - 09:08 PM in General Discussion
#28781 TLC5940
Posted by Nzc on 10 May 2012 - 06:42 PM in General Discussion
#36445 Netduino Plus 1 Firmware v4.1.0 (update 6)
Posted by Nzc on 03 October 2012 - 08:38 AM in Netduino Plus 2 (and Netduino Plus 1)
#36544 Netduino Plus 1 Firmware v4.1.0 (update 6)
Posted by Nzc on 04 October 2012 - 08:58 PM in Netduino Plus 2 (and Netduino Plus 1)
Hi Nzc,
Before doing the compare in SAM-BA, did you add a few zeros to the "size" value? If not, it will only read the first small bit of FLASH and since the size isn't big enough it will give you a verification failure.
Regarding EK vs AU... -EK means "evaluation kit" and is the name of the main development board for AT91SAM7X512-AU. It uses the same chip as Netduino which is why we use its script to flash the Netduino. Since they both use the same chip, they both flash using the same configuration.
Chris
Yes, I make sure to read enough bytes to make the comparison. I had a closer look at the data, and it's always the same bit that appears to be 1 when sometimes it should be 0, and only in one memory block. Can it be that the flash memory is corrupt? At least the file I read back is always the same, but different from what I try to write
When I reset gold pad - 3.3V, I can always get back to the CDC connection, and scripts and downloads always run fine, I just don't get the right code in the flash. When reconnecting after the flash, the USB gives a low-level error, and I don't see any info, not even the usual vid/pid stuff.
#29519 General Utilities
Posted by Nzc on 22 May 2012 - 01:54 PM in General Discussion
Hi to everybody.
You know I'm a software guy, so, after having been helped so many times here, I try to give something back, even if I know I don't have the electronics expertize to be sure that I'm going in the right direction.
So I invite you to read the readme, and, if you want, take a look at the code: I would like to receive some feedback by the experts, to understand if I'm going on the right direction, or if I'm missing something important, like performance, memory size, and I don't know what else...
Andrea
Hehe, nice to see my evening projects have some use for other people Bit busy lately, but I'll check it out!
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