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trouble with gpio interrupt
Hi, I'm using EVK1101 and there is two push buttons PB0 and PB1 connected to pins PB02 and PB03. I'm trying to make a simple program which will execute appropriate interrupt...
Fri. Oct 16, 2009 - 05:10 PM
UC3B0256 and sample & hold
Hi, can't find in a datasheet, is there a "sample & hold" block for every a/d channel or there is only one "sample & hold" block for all a/d channel? I assume that there...
Sun. Sep 13, 2009 - 07:21 PM
question about multiplication
Hi, I'm using WinAVR and I was wondering why this doesn't work int16_t a int16_t b int16_t c int32_t d ... for(....) ... d = d + a*b ... c=d/1000 convert c to string with...
Tue. Jun 9, 2009 - 06:12 AM
Problem with fixed point math
Hi, I have a problem with representing a negative number, like -0.91 using fixed point math? I read the tutorial for the fixed point math from http://www.embedded.com/columns/...
Mon. Jun 1, 2009 - 04:04 PM
__attribute__((__interrupt__)) ?
Hi, I use AVR32 studio with GNU toolchain and EVK1101, I was wondering what does mean this part of code __attribute__((__interrupt__)) I made a simple program for handle...
Sat. Apr 4, 2009 - 09:22 AM
Expand EVK1101
Hi, I need to connect EVK1101 with some external elements, like lcd, is it better to put female or male headers on EVK1101?
Sun. Mar 22, 2009 - 10:40 PM
three questions about computing
Hi, I use WinAVR and I have a few question: 1. How can I know how many cycles use a function sqrt for computing square root of some numbers? 2. I know that input variable for the...
Sun. Dec 21, 2008 - 06:06 PM
A simple RC low pass filter
Hi, I'm not an expert in constructing a simple passive low pass filter and I need help from someone who has an experience with this. I need to make a simple low pass filter with R...
Tue. Dec 16, 2008 - 04:05 PM
transmitting signal across power line
Hello all, is it possible and how to realize communication between computer and avr in the next scheme? Is there any tutorial or other documentation that talks about this?
Mon. Oct 3, 2005 - 10:14 AM
I need an idea
Hello, I need to sample (and converts) my analog signal every 5ms (5.0ms). Here is the part of my code, but I don't know is this the best way: SIGNAL(SIG_ADC) { r[0]=ADC...
Fri. Sep 23, 2005 - 11:01 AM
About interrupt
Hi, I use external interrupt with falling edge detection. My signal looks like this on the picture. How can I determine the point of time at whom interrupt will be executed?
Sun. Sep 18, 2005 - 05:51 PM
what is the analog ground plane?
Hello, what is the analog ground plane? In the datasheet for the ATmega48 has this picture: this figure showing how the AVcc pin should be connected to the digital Vcc supply...
Mon. Sep 12, 2005 - 05:09 PM