Heh. I went back :) And this thread gave me a much better idea of the state.
Thank you to everyone who weighed in on this thread and I appreciate the hard work everyone puts into make this hardware and software available. Cheers! On Fri, Dec 12, 2014 at 11:19 AM, david turvene <[email protected]> wrote: > On Tuesday, December 9, 2014 8:13:45 PM UTC-5, Matthew Heitzenroder wrote: >> >> >> I would hate to downgrade the kernel back to 3.8, just to get the capes to >> work. I’ll give those overlays a try. >> > @Matt - > Well, if you REALLY don't want to go back, another thing you can try is to > memory map the chip address space and directly control the pin registers. > Search for the android devmem.c utility. It's a small C program that > memory maps physical address space into user space. Compile and run it on > the BBB. See the TI AM335x TRM > (http://www.ti.com/lit/ug/spruh73k/spruh73k.pdf) for physical memory > locations for EVERYTHING on the chip. You need to understand the > architecture a little because the ARM core accesses most SoC peripherals > using the L3 or L4 buses (L1 and L2 are inside the ARM core.) > For example, to read the GPIO_DATAOUT register in the GPIO1 register set > and then set the USR1 LED (bit 22): > sudo devmem2 0x4804c13c w > sudo devmem2 0x4804c13c w 0x400000 > To confirm the device, read the device_id reg in the CONTROL_MODULE > register set. This should always return something containing B944h and 17h > - the unique JTAG id for the TI AM3358 chip. > sudo devmem2 0x44e10600 w > According to the BBB SRM you want to look in section 9.2.2 of the TRM for > your pins. > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the Google > Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/-gHgYDh5tV4/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. -- 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.
