Hi! I made a simple module for measuring temperatures using Smarttemp devices (giving a PWM output) for the Foxboard. I had to make a module since I had to be able to switch interrupts off for the few milliseconds it takes to measure the PWM width.
And it works like a charm! Until.... I insert a USB memory stick. If I do the measurements starts jumping up and down again, just as if I didn't turn the interrupts off. Can the USB somehow steal clock cycles from the processor even if the interrupts are switched off? And, if so, can I somehow stop this "stealing" for a few milliseconds? Thankful for input and/or help... Best regards, Jonas (http://rosenborg.homelinux.org , this is the web server on the Fox presenting heater system values in a very simple form. It also has a RSS feed on /panna.xml that I use on my mobile phone. http://coinop.mine.nu/~jonas/panna.php is a graph from the database which the Fox fills with values over internet. The Fox is a really cool little board! =) )
