Hardware : BCM2835 error on RaspberryPi B+ #319

Azn9 · 2017-02-24T18:40:12Z

Unable to determine hardware version. I see: Hardware : BCM2835
,

expecting BCM2708 or BCM2709.
If this is a genuine Raspberry Pi then please report this
to projects@drogon.net. If this is not a Raspberry Pi then you
are on your own as wiringPi is designed to support the
Raspberry Pi ONLY.

I use a RaspberryPi B+.

dyercode · 2017-02-25T19:42:05Z

Also seeing this on a Zero and a B+. It was previously working on the B+.

Unable to determine hardware version. I see: Hardware   : BCM2835
,
 - expecting BCM2708 or BCM2709.
If this is a genuine Raspberry Pi then please report this
to projects@drogon.net. If this is not a Raspberry Pi then you
are on your own as wiringPi is designed to support the
Raspberry Pi ONLY.
user@system ~> gpio -v
gpio version: 2.38
Copyright (c) 2012-2017 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Pi Zero, Revision: 03, Memory: 512MB, Maker: Sony
  * Device tree is enabled.
  *--> Raspberry Pi Zero Rev 1.3
  * This Raspberry Pi supports user-level GPIO access.

savageautomate · 2017-02-25T20:24:08Z

It looks like this was a change as of Kernel v4.8. WiringPi did add support for this change in December. See this commit: Pi4J/wiringPi@b1dfc18#diff-672071e4cd5d0146a80fb586c87c38e1R723

Can you please try Pi4J Version 1.2-SNAPSHOT to see if its working on your systems?
http://pi4j.com/download.html

The SNAPSHOT builds are compiled against the latest WiringPi builds.

Maybe we need to go back and produce a new release of v1.1 source base compiled with the latest WiringPi?

Thanks, Robert

savageautomate · 2017-02-25T20:43:08Z

One other option if you need to use the existing v1.1 release of Pi4J is to use the dynamic linking option where Pi4J is dynamically linked to WiringPi rather than the default static linking.

Build and install the latest WiringPi on your system.
http://wiringpi.com/download-and-install/

Now when starting your Java app, you need to set the system property of "pi4j.linking=dynamic"

Here is an example command line where I'm defining the system property via command line:
sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample

Note that I also define the system property of pi4j.debug so that I can verify that Pi4J comes up and uses the dynamic linking.

My output looks something like this:

^Cpi@rpi3b:~/pi4j-dev $ sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
<--Pi4J--> GPIO Blink Example ... started.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Attempting to load [libpi4j.so] using path: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] loaded successfully using embedded resource file: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
 ... the LED will continue blinking until the program is terminated.
 ... PRESS <CTRL-C> TO STOP THE PROGRAM.

Thanks, Robert

dyercode · 2017-02-25T20:59:32Z

Both the snapshot version and the dynamic linking on 1.1 worked for me.

savageautomate · 2017-02-25T21:17:16Z

@dyercode ,

Thanks for the update and glad to hear both alternate options are working!

patriciowallace · 2017-03-01T14:57:46Z

Hi, I use the static option because is more portable for me
the static option with the snapshot 1.2 is not working.

Any other sugestion ?

Regards
Patricio

savageautomate · 2017-03-01T15:07:34Z

@patriciowallace

Static + 1.2-SNAPSHOT should be working!

Please make sure to download the latest 1.2-SNAPSHOT build here:
http://pi4j.com/download.html

Thanks, Robert

patriciowallace · 2017-03-01T15:55:16Z

I re built all the project again with the 1.2 snapshot version, I am sure that the j4pi is the 1.2

the result

Unable to determine hardware version. I see: Hardware : BCM2835
,

expecting BCM2708 or BCM2709.
If this is a genuine Raspberry Pi then please report this
to projects@drogon.net. If this is not a Raspberry Pi then you
are on your own as wiringPi is designed to support the
Raspberry Pi ONLY.

Same result.

Any sugestions.

Regards
Patricio

patriciowallace · 2017-03-01T15:56:59Z

I use the core.jar and device.jar if it helps

Regards
Patricio

patriciowallace · 2017-03-02T14:37:58Z

any answer please

savageautomate · 2017-03-02T15:34:48Z

I have not had a chance to test it here locally yet to confirm. Which Pi model are you working with?

Azn9 · 2017-03-03T09:28:17Z

Hi I've tested pi4j 1.2 snapshot, and it works fine on raspi B+!

jesperldk · 2017-04-18T15:58:38Z

1.2 snapshot works on raspi 3.
When will we have a proper release?
And perhaps you could update the home page right away - I am sure this is confusing many new users as my self.
Thanks! :-)

zzApotheosis · 2017-04-30T04:32:05Z

Using

Raspberry Pi 3 - Model B
Pi4J 1.1

Problem

Looks like I'm getting the same problem now. It literally just started happening after a Raspberry Pi reboot. I'm using the Raspberry Pi 3 - Model B.

The only difference I can think of between reboots is that I disabled some interfaces in Raspbery Pi Configuration (disabled Camera, I2C, and Serial). I don't really see how disabling those interfaces would mess up my hardware version.

Edit 30 April 2017

I just installed a fresh installation of Raspbian and now I have no problems running my project on Pi4J 1.1. Pretty weird. I still have no idea what could be causing it, but I also suspect that it may be a bug in wiringPi and not Pi4J.

I'd also like to point out that running the command "cat /proc/cpuinfo" echoes the hardware version near the bottom of the dialog. After a fresh installation of Raspbian, it reads BCM2709, the way Pi4J/wiringPi likes it. After doing a "sudo apt-get update" and "sudo apt-get upgrade" and restarting the device, the hardware version reads BCM2835.

NorthFred · 2017-05-03T17:16:04Z

Problem still persists on Raspberry Pi 3 (B) with the Pi4J 1.2 Snapshot.
Fresh image: Linux raspberrypi 4.9.24-v7+ #993 SMP Wed Apr 26
Hardware is still detected as BCM2835.

vinny4 · 2017-05-09T14:34:33Z

After updating my rpi couple of days ago - i have this hardware version now
Hardware : BCM2835
Revision : a22082
Serial : 0000000056f0096a
with kernel version Linux XXXRPi 4.9.25-v7+ #995 SMP Thu May 4 15:52:25 BST 2017 armv7l GNU/Linux.

But the problem still persists.
its really annoying now :(

NorthFred · 2017-05-10T05:57:07Z

The only reasonable solution so far is to downgrade the kernel to v.4.4.49.

Can be found here:
raspberrypi/firmware@4ff0432

vkbarshah · 2017-05-11T10:56:14Z

Thanks to savageautomate,
i was troubling with pi4j library for blinking led on pi 3 B.when i read your comment on BCM2835 and snapshot it really help full for me.Now,i am able to work with pi4j library.Moreover,i like your work keepit up('_')...

kisdaniel · 2017-05-19T21:17:33Z

I also had a same issue with raspberry pi 3, pi4j 1.1, and 4.9.24-v7 linux kernel version.

gpio -v
gpio version: 2.44
Copyright (c) 2012-2017 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
  Type: Pi 3, Revision: 02, Memory: 1024MB, Maker: Sony 
  * Device tree is enabled.
  *--> Raspberry Pi 3 Model B Rev 1.2
  * This Raspberry Pi supports user-level GPIO access.

uname -a
Linux garazs 4.9.24-v7+ #993 SMP Wed Apr 26 18:01:23 BST 2017 armv7l GNU/Linux

After upgrading to pi4j 1.2-SNAPSHOT this problem disappeared.

When will be available 1.2 as a release?

RGeorgy · 2017-05-26T15:54:33Z

Thanks to the team.
I have done some simple tests with pi4j snapshot 1.2 - For me it seems to work so far!
I am using Raspberrry Pi3B Upgraded and updated 26th of May 2017.
Simply exchanged the main pi4j...jar files in my library.
Best regards

duckie96 · 2017-05-28T06:28:47Z

Hi, noob needing some help please.
When I issue the gpio command, I get the error as above.

pi@piname:~ $ gpio -g write 4 1
Unable to determine hardware version. I see: Hardware : BCM2835
,

expecting BCM2708 or BCM2709.
If this is a genuine Raspberry Pi then please report this
to projects@drogon.net. If this is not a Raspberry Pi then you
are on your own as wiringPi is designed to support the
Raspberry Pi ONLY.

It is a rea pi.

pi@study:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7

Hardware : BCM2835
Revision : 100000e
Serial : 00000000765f50df

I upgraded pi4j, as mentioned above, no effect.

pi@study:~ $ dpkg -l | grep pi4j
ii pi4j 1.2~SNAPSHOT all Java library for IO access on the Raspberry Pi platform

I am using a straightforward php page, to issue the gpio command.

Not sure how to go forward with this.
Please any advice would be appreciated.

duckie96 · 2017-05-28T06:54:04Z

Ahh got it, re installed wiringPi. . All sorted now.

manorius · 2017-05-29T06:35:43Z

The only thing that worked for me is the solution provided by neuralassembly here: https://github.com/WiringPi/WiringPi-Python/issues/47

…BCM2835 Reference: Pi4J/pi4j-v1#319

camueller · 2017-06-05T05:58:13Z

Using a fresh install 2017-04-10-raspbian-jessie-lite.img followed by "apt-get update" and "apt-get upgrade" all I have to do is switching to pi4j 1.2-SNAPSHOT. Without pi4j 1.1 I get the "Unable to determine hardware version. I see: Hardware : BCM2835" error.
Please consider a release of pi4j 1.2 soon!

pi@raspberrypi:/app $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 1
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 2
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 3
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

Hardware : BCM2835
Revision : a02082
Serial : 000000004190e153

SamOrozco · 2018-02-25T19:57:55Z

Using the snapshot fixed this issue for me.

ricardojlrufino · 2018-03-05T00:43:33Z

I get a filesystem error (EXT4-fs error) and hangs raspberry when i use PWM and SPI
Normal GPIO its working using 1.2-SNAPSHOT

eitch · 2018-03-05T07:41:31Z

Is your app running as root? Sadly PWM needs root access otherwise it hangs.

ricardojlrufino · 2018-03-09T03:08:17Z

Is your app running as root? Sadly PWM needs root access otherwise it hangs.

Running as ROOT worked... thanks

DRChess · 2018-03-18T21:30:43Z

I have had some conversations with Jacobs of JMRI and there seems a lot of forgotten history. Does not remember telling the community that you must be logged into as root for the Raspberry Pi gpio to work. So now you do not log in as root. Currently since JMRI that came out in 2017 major changes to the Pi's OS has also changed. The program for accessing the gpio is being distributed by the Pi foundation. This has happen because Pi4j is dead as can be. No one is supporting it and JMRI needs it badly. So how to make it work. It seems the OS is on your side. Log in as normal. Install new JMRI don't bother with being root (no pi4j not needed) add the patch to default setting as per JMRI. (this tells the java to search elsewhere for gpio dynamically) make sure if a launcher icon is used that sudo is missing. If it finds sudo it will not use the patch. When JMRI opens it will use the patch setting and the OS will find Gordon's closed minded open source software, version 2.44, that works on he Pi with BCM2835 coded even if the core is BCM2837. and gpio is restored to JMRI. If this seems like a little bitterness, It took longer than I like and to get a response and to find people from Egypt living on the river of denial filled with political bias was not what I wanted to find. The Pi is still a year and a half from 2g of RAM and the Orange, Pine, and a few other have it. It will mean much more when Panel Pro runs. By the way. DCC++ is working with digital IO (direct turnout control) and is now a $40 full DCC system with JMRI. I spent over $400.00 for mine without turnout control or sensors. The JMRI found a bug that some one reported as fixed and it wasn't.

…

On March 8, 2018 at 10:08 PM Ricardo JL Rufino ***@***.***> wrote: > > > Is your app running as root? Sadly PWM needs root access otherwise it hangs. > > > Running as ROOT worked... thanks — You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/Pi4J/pi4j/issues/319#issuecomment-371699623 , or mute the thread https://github.com/notifications/unsubscribe-auth/Ae3l72um_C-6s2p0sfyRdyAn_cNqaW1uks5tcfIogaJpZM4MLiZl .

DRChess · 2018-03-19T12:18:22Z

The snapshot version is a developmental release and many people prefer not to bind software to it because of stability. Since pi4j version 1.2 is not being released the question is "Has Raspberry Foundation given enough to the community to give you those missing functions?" GPIO is included with the new distribution and Java static makes software look inside of itself that causes an old GPIO function to be found that results in the error. Switching to dynamic Java looks to the bin folder where if finds the new GPIO that does work. For this reason it is sometimes not nessacery to install pi4j. New Python works well but older software is not compatible.

…

On February 25, 2018 at 2:58 PM SamOrozco ***@***.***> wrote: Using the snapshot fixed this issue for me. — You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/Pi4J/pi4j/issues/319#issuecomment-368339345 , or mute the thread https://github.com/notifications/unsubscribe-auth/Ae3l7xINUNRj5naTEBcdLBOO_lMa-Ttiks5tYbtJgaJpZM4MLiZl .

BILLyTheLiTTle · 2018-03-30T13:32:36Z

How can I get 1.2-SNAPSHOT from Gradle repository?

hemantmandge · 2018-04-09T09:58:44Z

I am facing same issue with Pi4J1.1.

Unable to determine hardware version. I see: Hardware : BCM2835
,

expecting BCM2708 or BCM2709.
If this is a genuine Raspberry Pi then please report this
to projects@drogon.net. If this is not a Raspberry Pi then you
are on your own as wiringPi is designed to support the
Raspberry Pi ONLY.

As suggested on forum I tried to execute program with to Pi4J 1.2-SNAPSHOT. Error went away but GPIO output not working.

Can somebody suggest some other approach.

BILLyTheLiTTle · 2018-04-09T10:30:46Z

@hemantmandge
Are you sure you are doing everything all right. Use the "gpio readall" while you are communicating with the pin and see if you have set the out mode and 1 value at the right pin. I suggest to start playing with the terminal first (http://wiringpi.com/the-gpio-utility/)

hemantmandge · 2018-04-09T11:33:52Z

Hi,
Yes I am doing everything right.
I used program at following link which uses Pi4j. It did not work
http://agilerule.blogspot.in/2016/05/iot-spring-boot-and-pi4j-integration.html

I even tried to use sample provided with pi4j 1.2 snapshot zip. The program did not give any error as such but failed to operate GPIO pin.

Just to give further input, I tried python program and it is working perfectly fine.

BILLyTheLiTTle · 2018-04-09T11:41:08Z

Have you tried the wiringPi utility? Is it working with it?

ghost · 2018-04-26T22:52:08Z

Thanks is now available with apt-get:
1- Remove existing wiringpi

$ sudo apt-get purge wiringpi
$ hash -r

2- Install wiringpi
$ sudo apt-get install wiringpi
3- Check the installation

$ gpio -v
$ gpio readall

daabutts · 2018-08-17T22:35:01Z

I'm having the "I see: Hardware: BCM2835 - expecting BCM2708 or BCM2709" issue. I've tried the same boot SD in a pi2, pi3 B, and pi3B+. All exactly the same problem.

$ gpio readall
this seems to work and lists all the GPIO pins...

$ gpio -v
gpio version: 2.46
Copyright (c) 2012-2018 Gordon Henderson
This is free software with ABSOLUTELY NO WARRANTY.
For details type: gpio -warranty

Raspberry Pi Details:
Type: Pi 3, Revision: 02, Memory: 1024MB, Maker: Embest

Device tree is enabled.
*--> Raspberry Pi 3 Model B Rev 1.2
This Raspberry Pi supports user-level GPIO access.

$ pi4j -v

        THE Pi4J PROJECT

VERSION : 1.2-SNAPSHOT
TIMESTAMP : 2018-04-23 04:22:34

Here are the commands I used to install:
sudo apt-get purge wiringpi
hash -r
sudo apt-get install git-core
cd ~
git clone git://git.drogon.net/wiringPi
cd ~/wiringPi
git pull origin
./build
gpio -v
gpio readall
cd ~
pi4j -v
//this command doesn't get the latest for some reason
curl -s get.pi4j.com | sudo bash
//use this instead:
get the file from here http://get.pi4j.com/download/pi4j-1.2-SNAPSHOT.deb
sudo apt-get remove pi4j
curl -s get.pi4j.com/uninstall | sudo bash
sudo dpkg -i pi4j-1.2-SNAPSHOT.deb
pi4j -v

Here is the run command:
cmd : cd '/home/pi/NBPs//eB'; 'sudo' '/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/bin/java' -Xdebug -Xrunjdwp:transport=dt_socket,address=127.0.0.1:53030 -Dfile.encoding=UTF-8 -Djava.library.path='lib' -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' -jar /home/pi/NBPs//eB/dist/eB.jar
running Gui**
loading
Aug 17, 2018 5:10:03 PM com.pi4j.util.NativeLibraryLoader load
FINE: Attempting to load [libpi4j.so] using path: [/lib/libpi4j.so]
Aug 17, 2018 5:10:04 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Aug 17, 2018 5:10:04 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] loaded successfully using embedded resource file: [/lib/libpi4j.so]
Unable to determine hardware version. I see: Hardware: BCM2835,

expecting BCM2708 or BCM2709. Please report this to projects@drogon.net

The program crashes on the Java line:
final GpioController gpio = GpioFactory.getInstance();

THEN I FOUND the problem: Solution:
In my NetBeans project, the Pi4J library was referencing 1.1 instead of 1.2.
Problem solved.
Hope this helps someone.

dersch81 · 2018-09-28T14:49:55Z

Had fixed this by changing the Kernel from 4.9.xx to 4.4.47. Is it fixed by newer Kernel Version?

PauloBrasko · 2018-11-21T15:08:46Z

Solution that worked for me: I am using Netbeans, so I right-clicked in the project's name >> properties >> Categories: Run >> VM options: -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*'
Running again my project I got no error and the program was doing what was expected.

Without this dependency the pi4j library did not work on my Raspberry Pi Model 3 B+. Unfortunately there is another issue Pi4J/pi4j-v1#319 which can be resolved by updating to pi4j release 1.2 (not yet released). Also-by: Michael Rumpf <michael@rumpfonline.de> (github: mrumpf) Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de>

Without this dependency the pi4j library did not work on my Raspberry Pi Model 3 B+. Unfortunately there is another issue Pi4J/pi4j-v1#319 which can be resolved by updating to pi4j release 1.2 (not yet released). Also-by: Michael Rumpf <michael@rumpfonline.de> (github: mrumpf) Also-by: Wouter Born <github@maindrain.net> Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de>

Without this dependency the pi4j library did not work on my Raspberry Pi Model 3 B+. Unfortunately there is another issue Pi4J/pi4j-v1#319 which can be resolved by updating to pi4j release 1.2 (not yet released). Also-by: Michael Rumpf <michael@rumpfonline.de> (github: mrumpf) Also-by: Wouter Born <github@maindrain.net> Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de> Signed-off-by: Pshatsillo <pshatsillo@gmail.com>

Without this dependency the pi4j library did not work on my Raspberry Pi Model 3 B+. Unfortunately there is another issue Pi4J/pi4j-v1#319 which can be resolved by updating to pi4j release 1.2 (not yet released). Also-by: Michael Rumpf <michael@rumpfonline.de> (github: mrumpf) Also-by: Wouter Born <github@maindrain.net> Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de> Signed-off-by: Maximilian Hess <mail@ne0h.de>

pvsmian · 2020-06-24T00:33:50Z

One other option if you need to use the existing v1.1 release of Pi4J is to use the dynamic linking option where Pi4J is dynamically linked to WiringPi rather than the default static linking.

Build and install the latest WiringPi on your system.
http://wiringpi.com/download-and-install/

Now when starting your Java app, you need to set the system property of "pi4j.linking=dynamic"

Here is an example command line where I'm defining the system property via command line:
sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample

Note that I also define the system property of pi4j.debug so that I can verify that Pi4J comes up and uses the dynamic linking.

My output looks something like this:
^Cpi@rpi3b:~/pi4j-dev $ sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
<--Pi4J--> GPIO Blink Example ... started.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Attempting to load [libpi4j.so] using path: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] loaded successfully using embedded resource file: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
 ... the LED will continue blinking until the program is terminated.
 ... PRESS <CTRL-C> TO STOP THE PROGRAM.
Thanks, Robert

Would this dynamic linking work with PI4J v1.0 as well?

savageautomate · 2020-06-24T05:48:29Z

One other option if you need to use the existing v1.1 release of Pi4J is to use the dynamic linking option where Pi4J is dynamically linked to WiringPi rather than the default static linking.
Build and install the latest WiringPi on your system.
http://wiringpi.com/download-and-install/
Now when starting your Java app, you need to set the system property of "pi4j.linking=dynamic"
Here is an example command line where I'm defining the system property via command line:
sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
Note that I also define the system property of pi4j.debug so that I can verify that Pi4J comes up and uses the dynamic linking.
My output looks something like this:
^Cpi@rpi3b:~/pi4j-dev $ sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
<--Pi4J--> GPIO Blink Example ... started.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Attempting to load [libpi4j.so] using path: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] loaded successfully using embedded resource file: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
 ... the LED will continue blinking until the program is terminated.
 ... PRESS <CTRL-C> TO STOP THE PROGRAM.
Thanks, Robert
Would this dynamic linking work with PI4J v1.0 as well?

No, unfortunately not.

And the custom library loader does not appear to have any logic to load alternate libs.
https://github.com/Pi4J/pi4j/blob/release/1.0/pi4j-core/src/main/java/com/pi4j/util/NativeLibraryLoader.java

pvsmian · 2020-06-24T14:36:50Z

One other option if you need to use the existing v1.1 release of Pi4J is to use the dynamic linking option where Pi4J is dynamically linked to WiringPi rather than the default static linking.
Build and install the latest WiringPi on your system.
http://wiringpi.com/download-and-install/
Now when starting your Java app, you need to set the system property of "pi4j.linking=dynamic"
Here is an example command line where I'm defining the system property via command line:
sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
Note that I also define the system property of pi4j.debug so that I can verify that Pi4J comes up and uses the dynamic linking.
My output looks something like this:
^Cpi@rpi3b:~/pi4j-dev $ sudo java -Dpi4j.debug -Dpi4j.linking=dynamic -classpath .:classes:/opt/pi4j/lib/'*' BlinkGpioExample
<--Pi4J--> GPIO Blink Example ... started.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Attempting to load [libpi4j.so] using path: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] loaded successfully using embedded resource file: [/lib/raspberrypi/dynamic/libpi4j.so]
Feb 25, 2017 3:41:26 PM com.pi4j.util.NativeLibraryLoader load
FINE: Library [libpi4j.so] has already been loaded; no need to load again.
 ... the LED will continue blinking until the program is terminated.
 ... PRESS <CTRL-C> TO STOP THE PROGRAM.
Thanks, Robert
Would this dynamic linking work with PI4J v1.0 as well?
No, unfortunately not.

And the custom library loader does not appear to have any logic to load alternate libs.
https://github.com/Pi4J/pi4j/blob/release/1.0/pi4j-core/src/main/java/com/pi4j/util/NativeLibraryLoader.java

Thank you. My question btw was prompted by some migration issues going from 1.0 to 2.0, so I was trying to avoid it entirely!

SerialDataListener changed to SerialDataEventListener, mandating code changes
Serial.writeln(msg) isn't working the same way with a ttyxxx modem. Through trial and error, Serial.write((msg+"\r").getBytes()) seems to be the equivalent

FDelporte · 2020-06-26T06:40:21Z

Would it make sense to add a writeln(String msg) method in V2 to the IODataWriter?

https://github.com/Pi4J/pi4j-v2/blob/master/pi4j-core/src/main/java/com/pi4j/io/IODataWriter.java

savageautomate · 2021-01-15T17:20:27Z

Closed.

Original issue resolved in v1.2.

Please report any Pi4J v2 issues to the Pi4J V2 repository.
https://github.com/Pi4J/pi4j-v2/issues

savageautomate mentioned this issue Feb 25, 2017

Hardware Problem BCM2835 #320

Closed

savageautomate self-assigned this Feb 25, 2017

savageautomate added the bug label Feb 25, 2017

ndrone added a commit to ndrone/HomeAutomation that referenced this issue May 23, 2017

Pi4J/pi4j-v1#319 updated to 1.2-SNAPSHOT

0bf7a9f

rkaczorek mentioned this issue May 26, 2017

Problems with linking to wiringPI threebrooks/AdafruitStepperMotorHAT_CPP#1

Closed

camueller added a commit to camueller/SmartApplianceEnabler that referenced this issue Jun 5, 2017

Fixed error: Unable to determine hardware version. I see: Hardware : …

1b14277

…BCM2835 Reference: Pi4J/pi4j-v1#319

ricardojlrufino mentioned this issue Mar 5, 2018

Rpi 3 - Unable to determine hardware version (BCM2835) mattjlewis/diozero#32

Closed

This was referenced Feb 5, 2019

[mcp23017] java.lang.NoClassDefFoundError: Could not initialize class org.openhab.binding.mcp23017.internal.GPIODataHolder openhab/openhab-addons#4804

Closed

[mcp23017] Added hint to the wiringPi library openhab/openhab-addons#4806

Closed

wborn mentioned this issue Feb 7, 2019

Invalid pin exception using CM3 with i/o board #334

Closed

cweitkamp mentioned this issue Feb 26, 2019

[mcp23017] Added hint to the wiringPi library openhab/openhab-addons#5000

Merged

savageautomate closed this as completed Jan 15, 2021

Hardware : BCM2835 error on RaspberryPi B+ #319

Hardware : BCM2835 error on RaspberryPi B+ #319

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$ pi4j -v

VERSION : 1.2-SNAPSHOT TIMESTAMP : 2018-04-23 04:22:34

dersch81 commented Sep 28, 2018

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pvsmian commented Jun 24, 2020

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VERSION : 1.2-SNAPSHOT
TIMESTAMP : 2018-04-23 04:22:34