Hi Wesley, I'm interested in checking this out!
The download links are broken, are you able to post new links? Hope you're having a top day :D -Rudy. On Friday, August 31, 2012 at 7:04:39 AM UTC+10, Wesley wrote: > > Hey, > > So I tested to see how fast the GPIO toggle rate of the Beaglebone could > get when using a kernel module. When using user space it was only about 4-5 > MHz and once I did the kernel module it got up to 25 MHz. Since I had a > difficult time getting the kernel source tree on the beaglebone and > compiling everything here is some documentation and code for those who want > to build kernel modules/device drivers on the beaglebone and also user > program interaction with the kernel module. > > gpio.c is the kernel code > gpio.h is the header file for both gpio.c and ioctl.c > ioctl.c is the user code > > Here is my Makefile in case you want it also > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > obj-m := gpio.o > > KERNELDIR := /usr/src/linux-3.2.23 > > default: > $(MAKE) -C $(KERNELDIR) M=$(PWD) modules > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Also, the websites that I used that helped me get here were mainly these: > https://groups.google.com/forum/#!msg/beagleboard/BKnNkP3qzQs/PNloua3737MJ > http://www.cemetech.net/forum/viewtopic.php?t=7814 > and the Linux Device Drivers book > > ~Wesley > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/a282b742-f1db-4fc6-afa9-2c15599c5f59%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
