I did a >sudo su - and then >echo -7 > /sys/devices/bone_capemgr.9/slots (as Adafruit_BBIO.ADC had loaded into slot 7). The command appeared to work, but it also dropped me back to my regular user status so something went wrong. When, as a regular user, I >cat $SLOTS, it locked up the terminal the same as before. By the way, my kernel is Linux ubuntu-armhf 3.8.13-bone28
On Monday, December 2, 2013 4:10:07 PM UTC-5, [email protected] wrote: > > if you actually run "echo -9 > $SLOTS" as the root user do you still have > this issue? > > On Sunday, December 1, 2013 7:42:06 PM UTC-6, Bit Pusher wrote: >> >> I am trying to use both the A/D and the high-speed PRU direct I/O. I have >> the A/D working using Adafruit_BBIO.ADC and separately, I can write >> directly using the PRU based on the TI examples and using a Device Tree >> Overlay, but have not been successful using them concurrently yet. By using >> cat /sys/devices/bone_capemgr.9/slots, I found that the commands in python >> of >> >>>import Adafruit_BBBIO.ADC as ADC >> >>>ADC>setup() >> loaded the cape-bone-iio-00A0.dtbo overlay >> >> as >> >> /lib/firmware\> cat $SLOTS >> 0: 54:PF--- >> 1: 55:PF--- >> 2: 56:PF--- >> 3: 57:PF--- >> 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G >> 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI >> 9: ff:P-O-L Override Board Name,00A0,Override Manuf,cape-bone-iio >> >> I then attempted to remove the overlay by >> >> /lib/firmware\> sudo sh -c "echo -9 > $SLOTS" >> /lib/firmware\> cat $SLOTS >> >> but the terminal then freezes and never comes back. In another terminal >> window, using ps aux | grep cat >> I can see the process, but a kill -9 will not get rid of it. In the other >> terminal window, I also attempted the >> cat $SLOTS, and it froze up, as well. The only way of getting it back is >> rebooting the system. In addition >> the Adafruit_BBBIO.ADC does not have cleanup function. This behaviour >> does not seem correct to me. >> I also tried removing the overlay that set up the PRU output pins, and >> that did seem to work correctly. >> >> Any ideas? Thanks. >> Bit Pusher >> > -- 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/groups/opt_out.
