On Thu, Mar 21, 2019 at 10:59 AM <[email protected]> wrote:
>>
>> Hi TJF,
>
>
> I was previously using iio but due to ADC sampling rate issues, I've been 
> trying to use libpruio on my BBB wireless with the latest image from 
> beaglebone (i.e Debian 9.5, 4.14.71-ti-r80) on an SD card.
>
> I've installed libpruio through sudo apt-get install libpruio libruio-dev 
> libpruio-lkm libpruio-doc
>
> I've read some of the troublshooting on this thread and followed quite a few 
> steps but I'm encountering a similar problem to the others mentionned here, 
> once compiled the 1.c program goes to segmentation fault.
>
> lsmod outputs this:
>
> root@beaglebone:/var/lib/cloud9# lsmod
> Module                  Size  Used by
> xt_conntrack           16384  1
> ipt_MASQUERADE         16384  1
> nf_nat_masquerade_ipv4    16384  1 ipt_MASQUERADE
> aes_arm_bs             20480  0
> crypto_simd            16384  1 aes_arm_bs
> cryptd                 24576  1 crypto_simd
> wl18xx                110592  0
> wlcore                237568  1 wl18xx
> mac80211              696320  2 wl18xx,wlcore
> cfg80211              622592  3 wl18xx,wlcore,mac80211
> bnep                   28672  2
> hci_uart               69632  0
> btqca                  16384  1 hci_uart
> bluetooth             552960  24 hci_uart,btqca,bnep
> ecdh_generic           28672  1 bluetooth
> wlcore_sdio            16384  0
> evdev                  24576  1
> uio_pdrv_genirq        16384  0
> usb_f_mass_storage     53248  2
> usb_f_acm              16384  2
> u_serial               20480  3 usb_f_acm
> usb_f_ecm              20480  2
> usb_f_rndis            32768  4
> u_ether                20480  2 usb_f_ecm,usb_f_rndis
> libcomposite           65536  18 
> usb_f_ecm,usb_f_acm,usb_f_mass_storage,usb_f_rndis
> iptable_nat            16384  1
> nf_conntrack_ipv4      20480  3
> nf_defrag_ipv4         16384  1 nf_conntrack_ipv4
> nf_nat_ipv4            16384  1 iptable_nat
> nf_nat                 32768  2 nf_nat_masquerade_ipv4,nf_nat_ipv4
> nf_conntrack          143360  6 
> nf_conntrack_ipv4,ipt_MASQUERADE,nf_nat_masquerade_ipv4,xt_conntrack,nf_nat_ipv4,nf_nat
> iptable_mangle         16384  0
> iptable_filter         16384  1
> libpruio               16384  0
> uio_pruss              16384  0
> uio                    20480  2 uio_pruss,uio_pdrv_genirq
> spidev                 20480  0
> pruss_soc_bus          16384  0
> pru_rproc              28672  0
> pruss                  16384  1 pru_rproc
> pruss_intc             16384  1 pru_rproc
> ip_tables              24576  3 iptable_mangle,iptable_filter,iptable_nat
> x_tables               36864  5 
> iptable_mangle,ip_tables,iptable_filter,ipt_MASQUERADE,xt_conntrack
>
>
> I've modified /boot/uEvent.txt to stoppru_rproc from loading as suggested and 
> rebooted but the output of lsmod stays the same (and the program still goes 
> to segfault).
>
> modification in uEvent.txt:
> ###PRUSS OPTIONS
> ###pru_rproc (4.4.x-ti kernel)
> ##uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-4-TI-00A0.dtbo
> ###pru_rproc (4.14.x-ti kernel)
> ##uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo
> ###pru_uio (4.4.x-ti, 4.14.x-ti & mainline/bone kernel)
> uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo
> ###
>
> I went so far as to remove AM335X-PRU-RPROC-4-14-TI-00A0.dtbo and 
> AM335X-PRU-RPROC-4-4-TI-00A0.dtbo from /lib/firmware, to no avail.
>
> Additionally the output of ls -l /dev/uio* is "no such file or directory", I 
> don't know why.
>
> root@beaglebone:/var/lib/cloud9# ls -l /dev/uio*
> ls: cannot access '/dev/uio*': No such file or directory
>
>
> And in case this helps:
>
> root@beaglebone:/var/lib/cloud9# ls -l /sys/devices/platform/libpruio
> total 0
> -rw-r--r-- 1 root root  4096 Mar 21 14:00 driver_override
> -r--r--r-- 1 root root  4096 Mar 21 14:00 modalias
> drwxr-xr-x 2 root root     0 Mar 21 14:00 power
> -rw-rw-r-- 1 root pruio 4096 Mar 21 13:36 state
> lrwxrwxrwx 1 root root     0 Mar 21 14:00 subsystem -> ../../../bus/platform
> -rw-r--r-- 1 root root  4096 Mar 21 13:36 uevent
>
>
> Do you have a lead on what the problem might be?

Let's see more details..

sudo /opt/scripts/tools/version.sh

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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