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about multipile definition error from linker
Hi, I just got an error from my linker when I compiles my code: Linking to `uc3b0256-sd_mmc_example.elf'. ../../../sd_mmc.o:(.rodata.CC2420_FIFO_eic_opt+0x0): multiple...
Tuesday, 27 January 2009 - 15:31
studio2.1 and toolchain 2.1.4 give old code a lot of warning
hi, I just uninstalled my old studio2.0.2 and toolchain 2.0.3, and installed the new ones, then i selected the same old workplace for my old C codes, and then compiler give me a...
Monday, 12 January 2009 - 20:46
UC3B0256 QFN-64 package thermal pad size !!!
hi, from its datasheet, the QFN-64 package's exposed thermal pad's size has a big variance: from min 3.25*3.25mm to max 7.45*7.45mm, but there is no typical value. So anyone has a...
Sunday, 9 November 2008 - 18:04
the best unipolar single ended to differential circuit
hi guys, I'm wondering about the best ways to convert my unipolar single ended sensor output to differential input of ADC. I don't need any signal amplification or just a mirrored...
Wednesday, 5 November 2008 - 16:33
urgent question about Main OSC of UC3B and crystal !!!!
hi, I just found out a 2.5*2mm 16MHz crystal with 8pF load capacitance. and then I realized that maybe if i use this crystal to my UC3B, then it does not need external capacitors...
Wednesday, 5 November 2008 - 10:19
what's the current sink capability of UC3B pins?
i know that normal IO pins can output 4mA and high current pins can output 8mA, but there is no rating for their current sink. Anyone knows how much current they can sink?
Saturday, 1 November 2008 - 08:57
where does these add-on codes came from?
hi, I'm writing my RF bootloader and found that my final binary code got a lot of stuff like: 8000263c : 80002640 : where do they came from? here is my makefile: # C...
Sunday, 26 October 2008 - 17:16
is external pull-up ready needed for push button?
hi, just wondering what's the purpose of external pull-up when there is internal pull-up available on GPIO?
Thursday, 23 October 2008 - 20:50
does RCAUSE reset itself after read?
I'm wondering if this RCAUSE does not reset itself after I read it at the begining of my bootloader program, then next time when app program jump to my bl program again, it may...
Thursday, 23 October 2008 - 09:22
any problem if two DMA channels select the same peripheral?
Now I let both channel 0 and 1 point to SSC_RX, but the program just got some very strange result, channel 1 works, but channel 0 doesn't. There is no time conflect in my program...
Wednesday, 22 October 2008 - 13:39
interrupt priority on AVR32 ??!!
hi, AVR32_INTC_INT0 is the lowest priority and AVR32_INTC_INT3 is the highest, right? so bad that I tought INT0 was the highest since 1 year ago......
Tuesday, 21 October 2008 - 21:47
ask for correct sequence of disabling DMA
Hi, I'm using PDCA and SSC to read my ADC now, and after I stoped the DMA and waited some time and reenable it again, then I got some glitch: the PDCA int routine got executed...
Wednesday, 14 May 2008 - 17:16