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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
