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Discussion Title Created date
costs of volatile
Is there any memory or processing cost or downside to declaring a variable volatile?
Wednesday, 6 January 2010 - 16:13
printf, sscanf, and floating point numbers
i'm (ultimately) trying to get a floating point number out of a string. At the moment, however, I'm just trying to get one to print. Here's what I'm trying: percent sign got...
Monday, 28 December 2009 - 07:06
reading gps data -- one little hiccup
I have a gps unit hooked up to USARTD0 on my ATXmega256A3. It came out of the box at 4800 baud, I set it to 9600... I've been able to turn off all but the RMC message and can...
Friday, 25 December 2009 - 18:31
avr-libc and interrupt driven comms
avr-libc provides FILEs and stdio functionality through them. All the example code has things like this: #include static int uart_putchar(char c, FILE *stream);...
Wednesday, 16 December 2009 - 18:26
xmega usart configuration
hi, i'm working with an xmega256A3 on a development board using USART F0 through a MAX232R to talk to my usb port. I'm using zterm to watch port traffic, AVRfuses (avrdude gui)...
Friday, 11 December 2009 - 00:22