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UC3A vs UC3C
Which one is better? I have a design based on UC3A so far I have developed. But I am thinking I should upgrade it to UC3C....seems it has more IOs and the USB seems to allowe you...
Friday, 2 March 2012 - 05:06
powering on parts of your circuit using mosfets?
Hello helpful guys :) I am thinking of powering on a 5V device that connects to me 3.3V micro. The micro talks to the device using usb (so device supply is 5V). I have a 12V to 5....
Friday, 2 March 2012 - 03:32
usb control transfer 00 08 07 00 00 00 08
does anyone know what this control transfer bytes mean?? 00 08 07 00 00 00 08? It seems when you plug your data dongle (3g card), the windows machine keep sending this once in a...
Thursday, 23 February 2012 - 11:59
ADC measurement corrupted if some inputs are higher than 3.3
Ok I have some opamp driven RTD to analog board I have designed....the board is powered by 5V. So the maximum output voltage when no RTD is connected, is about 4.2V (close to...
Thursday, 23 February 2012 - 05:00
how to kill signal strength of a 3g usb modem
Ermm... I am still working with the 3G usb modem and my UC3A... Trying to simulate network dropouts now. Have placed the dongle inside meter boxes and cabbinets but the poor thing...
Tuesday, 21 February 2012 - 22:07
confirming integrety of file after ftp transfer..
I wrote up ftp transfer over tcp/ip on UC3A...I currently just dump the new firmware file over ftp which the UC3A installs after running from bootloader. I am wondering what...
Wednesday, 15 February 2012 - 01:09
SDRAM chips
Ermm... thinking of hooking up some SDRAM chips to my UC3A 32bit atmel chips... what SDRAM chips do you guys use?
Friday, 10 February 2012 - 04:12
time function not updating time variables after some time?
Some time ago you will remember I was asking about system time variables being incrememented inside a timer interrupt....I managed to use the time.h and sys/time.h header files...
Saturday, 4 February 2012 - 23:56
umm... malloc fail :(
Ok I am aware of the memory fragmentation after using malloc multiple times and freeing multiple times. Whats the way around it? I am allocating and deallocating 2K ish memory...
Friday, 3 February 2012 - 10:35
malloc freezes my micro controller...
I got a UC3A1256 and at some stage in my program I do a malloc and it seems to freeze my micro :( I have print statements before and after and chased it to that malloc location....
Monday, 30 January 2012 - 07:20
UC3A flash write function freezes!
I am using the #define BOOT_FORCE_DEFAULT_VALUE1 0x929E1424 #define BOOT_FORCE_VALUE1 ('B' << 24 | 'O' << 16 | 'O' << 8 | 'T') #define...
Saturday, 14 January 2012 - 21:44
PPP over usb dongle (3G modem)
I wanted to know if there is a way I the client could know if the server (mobile cell) on the other end still has connection with me. I do so far LCP, CHAP and then IPCP and then...
Wednesday, 11 January 2012 - 08:11

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