[beagleboard] Re: spidev_test fails on Beaglebone AI
An additional information: I can see the spi interfaces in the /dev/ folder. On Thursday, March 11, 2021 at 6:44:38 PM UTC+1 anandp...@gmail.com wrote: > Hi Everyone, > > I am trying to enable the spi interface on beaglebone AI. > I used the roboticscape device tree structure from the link below: > > https://github.com/beagleboard/BeagleBoard-DeviceTrees > The show-pins command shows that spi interface is up. However, when I run > the spidev_test, I receive a stream of 0's instead of actual data. > > I bridged the pins p9.29 and P9.30 before running the test. > Can anyone provide some solution to fix this issue? > > Thanks > Anand > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/644b5aa7-5514-464e-8311-5d388e4d3710n%40googlegroups.com.
[beagleboard] spidev_test fails on Beaglebone AI
Hi Everyone, I am trying to enable the spi interface on beaglebone AI. I used the roboticscape device tree structure from the link below: https://github.com/beagleboard/BeagleBoard-DeviceTrees The show-pins command shows that spi interface is up. However, when I run the spidev_test, I receive a stream of 0's instead of actual data. I bridged the pins p9.29 and P9.30 before running the test. Can anyone provide some solution to fix this issue? Thanks Anand -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/598bf63a-d087-4bb6-8e40-5c326edd4fefn%40googlegroups.com.
[beagleboard] Beaglebone Black upgrade error messages
debian@beaglebone:~$ sudo apt upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages have been kept back: c9-core-installer 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Setting up nginx-full (1.14.2-2+deb10u3) ... Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details. invoke-rc.d: initscript nginx, action "start" failed. ● nginx.service - A high performance web server and a reverse proxy server Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: en abled) Active: failed (Result: exit-code) since Thu 2021-03-11 12:01:25 EST; 104ms a go Docs: man:nginx(8) Process: 316 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process o n; (code=exited, status=0/SUCCESS) Process: 317 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code= exited, status=1/FAILURE) Mar 11 12:01:24 beaglebone nginx[317]: nginx: [emerg] bind() to 0.0.0.0:80 faile d (98: Address already in use) Mar 11 12:01:24 beaglebone nginx[317]: nginx: [emerg] bind() to [::]:80 failed ( 98: Address already in use) Mar 11 12:01:24 beaglebone nginx[317]: nginx: [emerg] bind() to 0.0.0.0:80 faile d (98: Address already in use) Mar 11 12:01:24 beaglebone nginx[317]: nginx: [emerg] bind() to [::]:80 failed ( 98: Address already in use) Mar 11 12:01:25 beaglebone nginx[317]: nginx: [emerg] bind() to 0.0.0.0:80 faile d (98: Address already in use) Mar 11 12:01:25 beaglebone nginx[317]: nginx: [emerg] bind() to [::]:80 failed ( 98: Address already in use) Mar 11 12:01:25 beaglebone nginx[317]: nginx: [emerg] still could not bind() Mar 11 12:01:25 beaglebone systemd[1]: nginx.service: Control process exited, co de=exited, status=1/FAILURE Mar 11 12:01:25 beaglebone systemd[1]: nginx.service: Failed with result 'exit-c ode'. Mar 11 12:01:25 beaglebone systemd[1]: Failed to start A high performance web se rver and a reverse proxy server. dpkg: error processing package nginx-full (--configure): installed nginx-full package post-installation script subprocess returned error exit status 1 Errors were encountered while processing: nginx-full E: Sub-process /usr/bin/dpkg returned an error code (1) debian@beaglebone:~$ debian@beaglebone:~$ cat /etc/dogtag BeagleBoard.org Debian Buster IoT Image 2020-04-06 debian@beaglebone:~$ uname -a Linux beaglebone 4.19.94-ti-r42 #1buster SMP PREEMPT Tue Mar 31 19:38:29 UTC 2020 armv7l GNU/Linux debian@beaglebone:~$ lsb_release -a No LSB modules are available. Distributor ID:Debian Description:Debian GNU/Linux 10 (buster) Release:10 Codename:buster -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/1710cc5d-4a66-4f92-b496-4b9c1d72df8an%40googlegroups.com.
[beagleboard] Re: BBB Libpruio Analog Data
Hello TJF, Thank you for the explanation that is very useful! With parsing the file, I'm doing that in Node-Red reading in the file as a binary buffer, but for some reason the buffer is 4x the number of sampling points I set. Like let's say I tell the script to sample the analog inputs 5000 times, the file will come back with 2 when I read it into Node-Red (I'd expect 1 points since I'm using 2 analog inputs). What could be the cause? Thanks! On Wednesday, March 10, 2021 at 2:26:30 PM UTC-5 TJF wrote: > Hi! > > ritesh...@gmail.com schrieb am Dienstag, 9. März 2021 um 21:15:01 UTC+1: > >> Specifically, they are collecting the data using Ring Buffer mode and >> saving it to a text file to be processed further for some feature >> extraction and further analysis. >> >> What I'm trying to understand is this: how does Ring Buffer sampling >> actually work? As in, if I'm reading data using two analog inputs and >> saving it to a text file, what order are the values in? How do I parse them >> into meaningful sensor values? I've attached the C code I'm working with, >> and greatly appreciate any help or pointers! >> > > Your code doesn't save to a text file. Instead it saves the raw data to a > binary file. The unshifted values (0-4095) are stored as 16-bit (unsigned > short) binary numbers in the order as captured, like > > AIN-1, AIN-2, AIN-1, AIN-2, AIN-1, AIN-2, AIN-1, AIN-2, ... > > In order to parse the file, just read it into a buffer and access that > buffer by a unsigned short pointer variable. 0 (null) means 0V, 4095 means > 1V8. So multiply the unsigned shorts by the factor 1.8/4095 to get the > voltage as a real value. > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/c5efd6f1-2dd7-48ee-a693-182a8710f539n%40googlegroups.com.
Re: [beagleboard] Micron MT41K256M16HA-125:E
On Thu, Mar 11, 2021 at 7:32 AM Micka wrote: > > Hi, We have to change the component: Micron MT41K256M16HA-125:E > > This list: > > Micron MT41K256M16TW-107:P > Kingston D2516EC4BXGGB > Kingston D2516EC4BXGGB-U > > are all compatible ? without any change in the configuration? > No change to the software stack with those: https://github.com/beagleboard/beaglebone-black/blob/master/BBB_BOM.csv PS, BeagleBoard.org boards have been using Kingston memory/eMMC for a few years now... Regards, -- Robert Nelson https://rcn-ee.com/ -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYhRcBOgce-BXbuPQRs9%3D5ttcmyWHVPEHAKcoWKZGLWR6A%40mail.gmail.com.
[beagleboard] Micron MT41K256M16HA-125:E
Hi, We have to change the component: Micron MT41K256M16HA-125:E This list: Micron MT41K256M16TW-107:P Kingston D2516EC4BXGGB Kingston D2516EC4BXGGB-U are all compatible ? without any change in the configuration? Michael, -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAF%2BMRt%3DSJRTMD%3D44Mddqw59Z5UBB6HFmYXvNwL1yexkSEDMSgA%40mail.gmail.com.
