Hi Surabhi, You basically have to write appropriate values into Port data register corresponding to the GPIO pin to switch the led on or of. The register can be accessed thru the immap pointer.(i.e internal memory map pointer )look at the file include/asm-ppc/immap_cpm2.h relative to ur kernel source base. You will find the mapped register variable in this file.
If you need to access this immap memory from userspace then u have to make a system call to enter kernel space and access the immap memory. Regards, Akash Kaul Hi, I am working on the MPC8270 board having connected GPIO 3 lines connected to 3 LEDs. So can any one help me in finding out the best solution of controlling the LEDs from MVlinux (kernel and user space) or any pointers who has done it before. Thanks & Rgds SS Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or Mailadmin at wipro.com immediately and destroy all copies of this message and any attachments. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded at ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
