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Code size question - volatile uint16_t in ISR
Scenario A: volatile uint16_t sine_frequency; ISR(TCD0_OVF_vect) { static uint16_t i; uint16_t x = (uint16_t)(sin(2*M_PI*i/sine_frequency)*243.5+243.5); TCD0.CCCBUF = x...
Monday, 26 December 2011 - 02:52
uint32_t and float problems
Note: the forum wouldn't let me submit with any percent signs in this post, so I replaced them with dollar signs. [fixed] I'm trying to print the frequency of a timer overflow on...
Tuesday, 20 December 2011 - 16:25
Mega168 bandgap problem
I can't seem to get the Mega168 to output a stable 1.1V reference on the AREF pin. Everything is working perfectly with AVCC set as the voltage reference. With 3.07V applied to...
Monday, 11 July 2011 - 05:39
too many clicks to program code into a board
Is there an easier way to do this? In AVR32 Studio there was a way to program the board with 1 click. It is rather annoying to have to open a GUI, click a bunch of times, and then...
Monday, 11 July 2011 - 00:03
global array problem - sharing it between source files
Edit: Fixed some typos that were addressed in other posts. I've seen this discussed in several threads on this forum and I spent multiple hours trying to solve it based on the...
Sunday, 10 July 2011 - 23:24
f2/f3 focus/open declaration not working in AS5?
did i somehow disable these options or do they no longer exist? i loved how in avr32 studio you could hover over a function call and hit f2 to focus on it and scroll through the...
Friday, 18 March 2011 - 05:30
odd behavior with locally mapped GPIO
I have been mostly successful converting to fast GPIO, but I'm running into a problem with reading some pin values from an external buffer. Setup data: fPBA = fPBB = fCPU = 66MHz...
Sunday, 20 February 2011 - 02:01
reading io pins, then writing same value to same io pins
I designed a board using the UC3A0128 and have begun working through examples in AVR32 Studio. I've actually made some progress but I am really stumped here. There are 8 pins...
Tuesday, 15 February 2011 - 17:26
GPIO pin question
Edited: This post was about something else, but I removed a lot of the fluff and made it about something specific. It may be in the wrong forum now and may also be cross posted...
Sunday, 13 February 2011 - 04:35
Question about connecting SDRAM to UC3A0128
I have several questions regarding SDRAM connections, but I'll start with these to see if I can solve the problems myself with a little bit of guidance. 1) Why does the address...
Saturday, 22 January 2011 - 15:15
global/static variables not behaving as expected
I've been working on one of my hardware designs for a while now and this little board is pretty basic - 8 RGB LEDs and 8 buttons. The function of the board is to receive color...
Saturday, 4 April 2009 - 18:21
Where to find the original AT90USB bootloader
I erased the chip (on purpose) during my trial and error phase of learning how to use it. However, I'd like to reflash the AT90USB162 I'm using with the original bootloader so it...
Wednesday, 30 July 2008 - 20:43

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