Urgent need for help with Bela and Beaglebone Wireless

Anderswh

Okay now im back to the original issue. I got it working on my home network, but i just tried the same method on the location the Belas are actually going to be at, and it doesnt work anymore. Here are the results of the "ifdown wlan0; ifup wlan0;" command:

Killed old client process
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/38:d2:69:e0:7f:cf
Sending on   LPF/wlan0/38:d2:69:e0:7f:cf
Sending on   Socket/fallback
DHCPRELEASE on wlan0 to 192.168.0.1 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
dhclient.c:2733: Failed to send 300 byte long packet over fallback interface.
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/38:d2:69:e0:7f:cf
Sending on   LPF/wlan0/38:d2:69:e0:7f:cf
Sending on   Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

And here are the results of the "ip a" afterwards

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether be:1a:ab:4a:94:8e brd ff:ff:ff:ff:ff:ff
    inet 192.168.6.2/24 brd 192.168.6.255 scope global usb0
       valid_lft forever preferred_lft forever
    inet6 fe80::bc1a:abff:fe4a:948e/64 scope link 
       valid_lft forever preferred_lft forever
3: usb1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether be:1a:ab:4a:94:91 brd ff:ff:ff:ff:ff:ff
    inet 192.168.7.2/24 brd 192.168.7.255 scope global usb1
       valid_lft forever preferred_lft forever
    inet6 fe80::bc1a:abff:fe4a:9491/64 scope link 
       valid_lft forever preferred_lft forever
4: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 38:d2:69:e0:7f:cf brd ff:ff:ff:ff:ff:ff

In case its relevant, here is the result from wpa_supplicants.conf:

network={
        ssid="Martin_EXT"
        #psk="xxxx"
        psk=20aaddd638b9947aaf1e7e20b15900d556dad7b262316d50366bf9761c402e28
}
network={
        ssid="tkf"
        #psk="xxxx"
        psk=dbecc6ba109fe52aaa0c66f487d0867afabf89f62cbbcdc4d1094e5ef7d58fc7
}

giuliomoro

Is that a 5GHz network or 2.4GHz? It may be that only 2.4GHz networks are supported. Try running

iwlist wlan0 scanning

and see if the desired network shows up there.

Secondarily, is there a DHCP server running on that network?

Anderswh

giuliomoro Here are the results from the scan:

          Cell 01 - Address: 7C:DD:90:F3:CC:BC
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"D1735F088527"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Mode:Master
                    Extra:tsf=00000007d39289ee
                    Extra: Last beacon: 3604ms ago
                    IE: Unknown: 000C443137333546303838353237
                    IE: Unknown: 010482840B16
                    IE: Unknown: 030106
                    IE: Unknown: 2A0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
``` 

As for the DHCP server running, im not quite sure! Its an old art house, so there might not be... Is there a quick way to check? Sorry for my lack of knowledge, im quite new to all this hehe. 
Thank you for the help yet again!

giuliomoro

Anderswh ESSID:"D1735F088527"

is different from what you had in your wpa_supplicant.conf ... is that intended?

Anderswh

giuliomoro No not at all! I just did the same scan command and got some more results, but still no SSID corresponding to the network im supposed to use (which works fine, im using it on my pc now). Im above a cafe so thats the reason behind the other network names.

wlan0 Scan completed : Cell 01 - Address: 7C:DD:90:F3:CC:BC Channel:6 Frequency:2.437 GHz (Channel 6) Quality=34/70 Signal level=-76 dBm Encryption key:on ESSID:"D1735F088527" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s Mode:Master Extra:tsf=00000009b591e7ca Extra: Last beacon: 3704ms ago IE: Unknown: 000C443137333546303838353237 IE: Unknown: 010482840B16 IE: Unknown: 030106 IE: Unknown: 2A0104 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : TKIP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : 802.1x IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : CCMP TKIP Authentication Suites (1) : 802.1x IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 Cell 02 - Address: 34:21:09:8F:AE:D1 Channel:1 Frequency:2.412 GHz (Channel 1) Quality=40/70 Signal level=-70 dBm Encryption key:on ESSID:"Cafe Ni Muser " Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Unknown/bug Extra:tsf=000000091441600c Extra: Last beacon: 3832ms ago IE: Unknown: 000E43616665204E69204D7573657220 IE: Unknown: 010882848B960C121824 IE: Unknown: 030101 IE: Unknown: 050402030000 IE: Unknown: 2A0104 IE: Unknown: 32043048606C IE: Unknown: 0B0502004B0000 IE: Unknown: 2D1AAC191EFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D1601000000000000000000000000000000000000000000 IE: Unknown: C803010001 IE: Unknown: E71033343231303938464145443030313030 IE: Unknown: 711201000FAC00000FAC000D80000000D73FE2F2 IE: WPA Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: DD0600E04C020160 IE: Unknown: DD500050F204104A00011010440001021054000800060050F2040001101100135265616C74656B20576972656C65737320415010080002008610470010112233445566778899AA3421098FAED0103C000103 IE: Unknown: 7F080000000000000000 Cell 03 - Address: 34:21:09:8F:AE:E1 Channel:1 Frequency:2.412 GHz (Channel 1) Quality=40/70 Signal level=-70 dBm Encryption key:on ESSID:"Cafe Ni Muser " Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=000000090f8732fe Extra: Last beacon: 3856ms ago IE: Unknown: 000E43616665204E69204D7573657220 IE: Unknown: 010882848B960C121824 IE: Unknown: 030101 IE: Unknown: 2A0100 IE: Unknown: 32043048606C IE: Unknown: 0B0506006F0000 IE: Unknown: 2D1AAC191EFFFF000000000000000000000000000000000000000000 IE: Unknown: 3D1601000300000000000000000000000000000000000000 IE: WPA Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: DD0600E04C020160 IE: Unknown: DDA30050F204104A0001101044000102103B00010310470010112233445566778899AA3421098FAEE01021001B5265616C74656B2053656D69636F6E647563746F7220436F72702E1023000752544C387878781024000D45562D323031302D30392D32301042000F3132333435363738393031323334371054000800060050F2040001101100135265616C74656B20576972656C657373204150100800020086103C000103 IE: Unknown: 7F080000000000000000

giuliomoro

so, could it be that the network you are looking for is operating on the 5GHz frequency band? I am not sure the chip and/or drivers on the BBW supports this band.

Anderswh

giuliomoro The network is 2.4GHz, see attached image:
alt text

I´ve already taken up so much of your time, so if its somewhat of a lost cause i´ll just have to accept that and find some other solution! Thank you very very much for your help, i´ve learned a lot!

giuliomoro

I don't know much about this ... maybe it's a question of signal strength? Your screenshot shows it's not particularly strong. Could you try moving closer to the access point's antenna?

Anderswh

giuliomoro I asked the cafe for their wifi and that worked fine!! So issue resolved. Im trying to dumb down the OSC pipe example down, as i only need to send OSC data (either 1s or 0s), and i want it to run on loop from boot as its going to be a standalone sensor. However im getting alot of errors and im not quite sure which parts of the code i can/should remove for this. Any tips?

I know im asking alot of questions, hope its not too big of a hassle!! Thank you for all the help

Anderswh

Anderswh I want to run it without the osc.js script for example.

giuliomoro

Anderswh However im getting alot of errors and im not quite sure which parts of the code i can/should remove for this.

That's a bit generic... what sort of errors are you getting?

It seems like all you need is something like:

#include <Bela.h>
#include <libraries/OscSender/OscSender.h>

OscSender oscSender;
int remotePort = 7563;
const char* remoteIp = "127.0.0.1"; // replace this with the receiver's IP address
float period = 0.1; // how often to send the OSC message

bool setup(BelaContext* context, void*)
{
	oscSender.setup(remotePort, remoteIp);
	return true;
}

void render(BelaContext* context, void*)
{
	int value;
	// do some magic here to  set the `value`
	// ....
	// e.g.: keep track of passing samples
	value = context->audioFramesElapsed; 
	// ...
	// then send it via OSC at the specified interval
	static int count = 0;
	count += context->audioFrames;
	if(count > context->audioSampleRate * period)
	{
		count = 0;
		oscSender.newMessage("/whatever-target").add(value).send();
	}
}

void cleanup(BelaContext*,void*) {}

Anderswh

giuliomoro Yeah sorry, was very generic! Your example was of great help! It works fine for around 10 seconds, but then the console gets spammed with Error while sending to pipe from OscSenderTask_192.168.39.1127563: (12) Cannot allocate memory (size: 20)

Any idea what that may be?

giuliomoro

Anderswh Any idea what that may be?

first off, you need a fix (as per https://forum.bela.io/d/2033-error-while-loading-shared-libraries-libseasocks-so-1-4-3/9). Run this once in the console at the bottom of the IDE:

sed -i  s/OscSenderTask_/OscSndrTsk_/ /root/Bela/libraries/OscSender/OscSender.cpp

then retrigger the build of the project: add a space to the render.cpp file somewhere where it doesn't make a difference and press the build button again. You will see it rebuilds the OscSender library as part of the process.

Now the startup error should have disappeared, hopefully everything works fine

Anderswh

I also get these two errors on startup, not sure what they mean:

AuxTaskNonRT OscSenderTask_192.168.39.1127563: could not open pipe /proc/xenomai/registry/rtipc/xddp/p_OscSenderTask_192.168.39.1127563: (2) No such file or directory
Aborting AuxTaskNonRT OscSenderTask_192.168.39.1127563

Anderswh

Here is the full code if that is of interest:

#include <Bela.h>
#include <libraries/OscSender/OscSender.h>
#include <stdlib.h>


int gInputPin = 1; // digital pin 1 - check the pin diagram in the IDE
int gOutputPin = 0; // digital pin 0 - check the pin diagram in the IDE
int pvalue;
int value;

OscSender oscSender;
int remotePort = 7563;
const char* remoteIp = "192.168.39.112"; // replace this with the receiver's IP address
//const char* remoteIp = "127.0.0.1"; // replace this with the receiver's IP address

float period = 0.1; // how often to send the OSC message

bool setup(BelaContext* context, void*)
{
	oscSender.setup(remotePort, remoteIp);
	return true;
}

void render(BelaContext* context, void*)
{
	int value;
	// do some magic here to  set the `value`
	// ....
	// e.g.: keep track of passing samples
	//value = context->audioFramesElapsed; 
	// ...
	// then send it via OSC at the specified interval
	value=digitalRead(context, 0, gInputPin); //read the value of the button
	
	static int count = 0;
	count += context->audioFrames;
	if(count > context->audioSampleRate * period)
	{
		count = 0;
			if (value!=pvalue){
			rt_printf("Here's the value: %i\n",value);
		}
		pvalue = value;
		oscSender.newMessage("/sensorOne").add(value).send();
	}
}

void cleanup(BelaContext*,void*) {}

Anderswh

giuliomoro Hmm i tried following the steps you provided but the error is still there. I might have misunderstood the retrigger and add a space part. What i did was:
1. Run the line you provided in the console
2. Added some line spaces in the render.cpp file, aka just pressed enter a few times
3. Pressed the Build&run button.

It might be worth mentioning that i get no errors at all if i use the local host 127.0.0.1 ip you provided in the original example.

giuliomoro

Anderswh AuxTaskNonRT OscSenderTask_192.168.39.1127563: could not open pipe /proc/xenomai/registry/rtipc/xddp/p_OscSenderTask_192.168.39.1127563: (2) No such file or directory

this mean that either this line

giuliomoro sed -i s/OscSenderTask/OscSndrTsk/ /root/Bela/libraries/OscSender/OscSender.cpp

was not run properly or it the file was somehow not rebuilt: it should show something like p_OscSndrTsk_192.168.39.1127563

Can you:

run the line again in the console at the bottom of the IDE
in that same console, run git diff libraries/OscSender/OscSender.cpp and post the result here
trigger a rebuild and rebuild, verifying it says "Building library OscSender"

giuliomoro

Can you show what errors you are getting now? Is it still that it runs fine for a few seconds and then it starts printing errors?

giuliomoro

and while/if it runs fine at the beginning, is the data received on the host?

Anderswh

The running fine at the start was a misunderstanding on my end. Sensorreading part was going fine but nothing was being sendt through osc. Here is the console output from when i press the build&run button:
Building project ... Building render.cpp... ...done Using library OscSender Using library UdpClient Linking... ...done Build finished Running project ... AuxTaskNonRT OscSenderTask_192.168.39.1127563: could not open pipe /proc/xenomai/registry/rtipc/xddp/p_OscSenderTask_192.168.39.1127563: (2) No such file or directory Aborting AuxTaskNonRT OscSenderTask_192.168.39.1127563

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