> Ik kan kop noch staart ontdekken aan je resultaten, something's > completely wrong! >
nou ik ben het spoor ook behoorlijk bijster. Ik ben redelijk bekend met industriele automatisering en electronica en het uizoeken/lezen van datasheets, wat hacken hier en daar en vaak kom ik er wel uit. > Your description also puzzles me: Potmeter on J6 is clear. But "J7 > and > J8 jumpers"? Do > you mean you've short circuit jumpers on the J7 and J8 inputs? yes > What's the value of the potmeter? set at approx 1k (had to steal a 9V battery from my son his RC car because Murphy made sure my multimeter battery was empty. The things we do for our hobbies .... > It's another variable, I would use one (short circuit) jumper > and try that on > the three different locations? Makes it easier to draw conclusions (I > hope). If the results > from that test are okay, you can try the potmeter. > > If that doesn't resolve anything I suggest you return to Angstrom for > further tests. agreed > You might have to update (flash) the BeagleBone if the software is > old > (and the > bone-bebopr-brdg overlay is not included with the kernel). I have the latest image of the machinekit which I installed approx 4 weeks ago. Dogged does it so here we go with intervals of approx 2 seconds after receiving the values. I took the last 5 in a series of 10: >>> only a single jumper on J8 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 0 759 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1190 0 1143 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1229 0 825 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1248 0 830 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1265 0 749 >>> Single jumper only on J7 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1351 4066 3706 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1246 4068 3325 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1322 4069 3560 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1369 4059 3595 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1368 4076 3738 >>> Single jumper only on J6 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1356 4072 3715 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 4072 3312 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1325 4076 3615 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1371 4069 3565 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1367 4080 3724 >>> No Jumpers on any of J8, J7 or J6 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1323 4069 3552 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1395 4072 3572 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1377 4070 3718 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1253 4072 3265 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1331 4070 3585 But I see something emerge... Here is my entire screendump of the console (used putty for ssh-ing into the BBB because I need to copy and paste all this info) seems that every 8th time I do "cat `find /sys/devices/ -name in_voltage[456]_raw`" i get this error message. And something happening at the 8th time seems like something to do with bits and bytes to me..... (don't ask me what, I'm just a mechanical engineer) below the entire console contents: login as: linuxcnc linuxcnc@192.168.7.2's password: Linux arm 3.8.13xenomai-bone26.1 #1 SMP Tue Aug 27 22:10:05 CEST 2013 armv7l The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. Last login: Mon Sep 2 19:57:11 2013 from 192.168.7.1 Environment set up for linuxcnc linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1205 0 828 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1248 0 752 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1189 0 1136 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1223 0 830 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 0 874 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 0 759 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1190 0 1143 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1229 0 825 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1248 0 830 linuxcnc@arm:~$ linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1265 0 749 linuxcnc@arm:~$ ^C linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1192 0 1134 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1228 0 828 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4083 3527 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1352 4060 3676 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1248 4071 3278 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1319 4077 3585 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1336 4061 3618 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1364 4060 3743 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1249 4079 3282 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1322 4083 3593 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4058 3581 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1351 4066 3706 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1246 4068 3325 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1322 4069 3560 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1369 4059 3595 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1368 4076 3738 linuxcnc@arm:~$ ^C linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1251 4060 3306 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1320 4071 3593 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4073 3579 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1356 4072 3715 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 4072 3312 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1325 4076 3615 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1371 4069 3565 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1367 4080 3724 linuxcnc@arm:~$ ^C linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1248 4072 3275 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1323 4073 3575 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4073 3561 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1364 4074 3676 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1253 4075 3249 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1331 4070 3577 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1380 4071 3570 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1371 4075 3694 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 4074 3280 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1321 4074 3559 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4075 3547 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1358 4074 3693 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1252 4075 3253 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1323 4069 3552 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1395 4072 3572 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1377 4070 3718 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1253 4072 3265 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` 1331 4070 3585 linuxcnc@arm:~$ cat `find /sys/devices/ -name in_voltage[456]_raw` cat: /sys/devices/ocp.2/44e0d000.tscadc/tiadc/iio:device0/in_voltage4_raw: Resource temporarily unavailable 4077 3509 linuxcnc@arm:~$ ^C ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. 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