Hello, We are making a demo on an Intrinsyc development board that has a StrongARM SA1110. OS is HardHat Linux. We want to use a GPIO pin as a PWM. Using this PWM we can make a backlight by switching some LEDs.
We already tried using the kernel timers of linux, but they were too slow to make a decent PWMfrequency (100Hz max gave a flickering backlight). We experimented with threads yesterday, but they are apparently also dependent of the kernel timers. Using microdelay is also not an option since it occupies the processor, so nothing else can be done during the waiting time. What we are looking for is a way to switch a GPIO pin as fast as possible in the background of an application. We want to implement all this in a module. any ideas or suggestions? Nicolas and Geert SW engineers ============================================================= Geert Jacobs Philips TASS Belgium Tweestationsstraat 80 1070 Brussel Tel: +32 2 525 70 74 Fax: +32 2 525 70 69 _______________________________________________ http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm Please visit the above address for information on this list.
