On 5/19/2014 4:06 PM, Brandon I wrote: > The pin mux registers require privileged memory access, which is why > the kernel space is usually required. The pru can write these!?
Of course. The PRU is directly wired into the on-chip bus, and bypasses all ARM side sanity checks like memory page access restrictions. You have 100% full control over anything the PRU can access, which is just about every significant chunk of hardware on the die except for: * SGX-530 GPU * AES & SHA crypto accelerator * USB * MMC Details are in the Interconnects section of the TRM (section 10), and remember: With great power comes great responsibility! -- Charles Steinkuehler [email protected] -- 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]. For more options, visit https://groups.google.com/d/optout.
