Re: [beagleboard] Re: Debug serial console not working

2021-07-05 Thread 'Mark Lazarewicz' via BeagleBoard 
Hello Vinay
Good News. I offer some good advice.
If your career path is embedded software engineer as opposed to Linux 
application programmer buy these Jumper's.
You could have fixed your cable easily but more importantly you can hook up o 
scope and logic analyzer and probe connectors.
Today's logic analyzer very cheap used to be very expensive they also decode 
protocol's
Cheers
Here are Jumper's you could also make these soldering is also a good skill to 
have in your toolkit
https://www.adafruit.com/product/758

Mark

Sent from Yahoo Mail on Android 
 
  On Mon, Jul 5, 2021 at 11:58 AM, Dennis Lee Bieber 
wrote:   On Mon, 5 Jul 2021 13:34:17 +0530, in 
gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:

>The pin positions for 5v, gnd, Rx, Tx on cable are not matching with J1
>header on bbb.
>

    5V is a danger already... A Raspberry-Pi serial<>USB (came with a
Sparkfun Pi-Wedge) runs
DTR    Rx    Tx    3.3V    CTS    GND
Which is NOT compatible with BBB (the Rx and Tx are swapped).

https://elinux.org/Beagleboard:BeagleBone_Black_Serial
"The debug cable is a standard FTDI to TTL cable. Make sure you get the
3.3V version."

Personally, the AdaFruit cable is probably more flexible as the four pins
are free to connect anywhere, not tied to a specific sequence in one
header.



-- 
Dennis L Bieber

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[beagleboard] Re: Debug serial console not working

2021-07-05 Thread Dennis Lee Bieber 
On Mon, 5 Jul 2021 13:34:17 +0530, in gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:

>The pin positions for 5v, gnd, Rx, Tx on cable are not matching with J1
>header on bbb.
>

5V is a danger already... A Raspberry-Pi serial<>USB (came with a
Sparkfun Pi-Wedge) runs
DTR Rx  Tx  3.3VCTS GND
Which is NOT compatible with BBB (the Rx and Tx are swapped).

https://elinux.org/Beagleboard:BeagleBone_Black_Serial
"The debug cable is a standard FTDI to TTL cable. Make sure you get the
3.3V version."

Personally, the AdaFruit cable is probably more flexible as the four pins
are free to connect anywhere, not tied to a specific sequence in one
header.



-- 
Dennis L Bieber

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[beagleboard] Re: Debug serial console not working

2021-07-03 Thread Dennis Lee Bieber 
On Sat, 3 Jul 2021 11:05:35 +0530, in gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:

>I have given permission by running
>
>sudo chmod 0777 /dev/ttyUSB0
>
That is not the preferred way to do it. The preferred way is by adding
your user account to the /group/ that owns tty* devices. On the systems I
checked, that is the Dialout group.

>Now I am able to open in putty but not receiving any data from bbb. Seems
>the issue with usb to serial cable.
>
Personally, I'd first connect an oscilloscope to the TxD and RxD pins,
and see what, if anything, is on those pins. You likely won't be able to
"read" the traffic, but should be able to recognize start/data/stop bits on
the scope.

Make sure you have the correct pins connected, and in the correct
direction...


-- 
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Re: [beagleboard] Re: Debug serial console not working

2021-07-03 Thread 'Mark Lazarewicz' via BeagleBoard 
Hi Vinay
For future reference if you use a Ubuntu VM serial window the terminal can have 
no info like you see because the USB driver is claimed by Windows.
That can be fixed in the VM  but in my experience the connection can be 
intermittent when using VM.
 The nice thing about using Ubuntu VM is you could check your cable in Windows 
first  and then get the appropriate drivers  installed ( test cable).
 Something to keep in mind for future. 
The VM approach has issues with creating SD cards so yet another option is a 
dual boot Ubuntu/ Windows PC .
Best wishes on finding a cable quickly. I'm sure you are excited to play with 
your board.
Mark

Sent from Yahoo Mail on Android 
 
  On Sat, Jul 3, 2021 at 12:40 AM, Vinayakumar Chikkadi 
wrote:   Hi Mark,
Good day to you
Saw this article it would help me to procure one.
Thanks for your inputs.
Regards,Vinay
On Sat, 3 Jul 2021 at 5:05 AM, 'Mark Lazarewicz' via BeagleBoard 
 wrote:

Using Serial Debug Port on BeagleBone Black - KiranPalla.com  
|  
|  
|  
|   ||

  |

  |
|  
|   |  
Using Serial Debug Port on BeagleBone Black - KiranPalla.com
 
It is interesting to see boot messages while the OS is coming up on BeagleBone 
Black. The messages are useful …
  |   |

  |

  |

  


Sent from Yahoo Mail on Android 
 
  On Fri, Jul 2, 2021 at 12:44 PM, Dennis Lee Bieber 
wrote:   On Fri, 2 Jul 2021 15:44:12 +0530, in 
gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:


>I am using the prolific usb to serial connector. After I connect the usb

    WHICH "prolific usb to serial"?  They have a whole slew of different
models. And that doesn't count the packagers using a Prolific chip in their
products (cf:
https://www.amazon.com/prolific-usb-serial/s?k=prolific+usb+to+serial )
I'm guessing something similar to
https://www.amazon.com/Serial-Adapter-Signal-Prolific-Windows/dp/B07R8BQYW1/ref=sr_1_8?dchild=1&keywords=prolific+usb+to+serial&qid=1625245702&sr=8-8

    I can't really help with Prolific -- most of my USB<>serial devices are
FTDI chips. I think the Adafruit 4-pin cable is the only Prolific chip
device I have.

>cable & When I check on Ubuntu with dmesg | tail
>I could see it’s getting enumerated as ttyUSB0
>When I open with putty on the path
>/dev/ttyUSB0 with 115200 8N1
>I am not able to open the com port using putty.

    Do you have privileges for the device? May not be relevant, but
connecting a USB<>Serial to the USB side of my BBB (I don't have a native
Linux desktop computer, and Windows won't be helpful to you) shows up like

crw-rw 1 root dialout 188,  0 Jul  2 13:21 /dev/ttyUSB0

the default user for the machine does belong to the dialout group.

    I got the same thing for Debian running inside VirtualBox /after/
manually selecting the USB device from the VB0x menu...

    BUT... unlike the BBB, my user account under VBox does NOT belong to
the dialout group, so I would have not permission to use it without making
changes...

crw-rw 1 root dialout 188,  0 Jul  2 13:31 /dev/ttyUSB0
wulfraed@debian:~$ groups
wulfraed cdrom floppy sudo audio dip video plugdev netdev bluetooth lpadmin
scanner vboxsf
wulfraed@debian:~$ sudo usermod -a -G dialout wulfraed
[sudo] password for wulfraed: 



wulfraed@debian:~$ groups
wulfraed dialout cdrom floppy sudo audio dip video plugdev netdev bluetooth
lpadmin scanner vboxsf
wulfraed@debian:~$ 



-- 
Dennis L Bieber

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Re: [beagleboard] Re: Debug serial console not working

2021-07-02 Thread Vinayakumar Chikkadi 
Hi Mark,

Good day to you

Saw this article it would help me to procure one.

Thanks for your inputs.

Regards,
Vinay

On Sat, 3 Jul 2021 at 5:05 AM, 'Mark Lazarewicz' via BeagleBoard <
[email protected]> wrote:

> Using Serial Debug Port on BeagleBone Black - KiranPalla.com
> 
> Using Serial Debug Port on BeagleBone Black - KiranPalla.com
>
> It is interesting to see boot messages while the OS is coming up on
> BeagleBone Black. The messages are useful …
> 
>
>
>
> Sent from Yahoo Mail on Android
> 
>
> On Fri, Jul 2, 2021 at 12:44 PM, Dennis Lee Bieber
>  wrote:
> On Fri, 2 Jul 2021 15:44:12 +0530, in gmane.comp.hardware.beagleboard.user
> Vinayakumar Chikkadi 
> wrote:
>
>
> >I am using the prolific usb to serial connector. After I connect the usb
>
> WHICH "prolific usb to serial"?  They have a whole slew of different
> models. And that doesn't count the packagers using a Prolific chip in their
> products (cf:
> https://www.amazon.com/prolific-usb-serial/s?k=prolific+usb+to+serial )
> I'm guessing something similar to
>
> https://www.amazon.com/Serial-Adapter-Signal-Prolific-Windows/dp/B07R8BQYW1/ref=sr_1_8?dchild=1&keywords=prolific+usb+to+serial&qid=1625245702&sr=8-8
>
> I can't really help with Prolific -- most of my USB<>serial devices are
> FTDI chips. I think the Adafruit 4-pin cable is the only Prolific chip
> device I have.
>
> >cable & When I check on Ubuntu with dmesg | tail
> >I could see it’s getting enumerated as ttyUSB0
> >When I open with putty on the path
> >/dev/ttyUSB0 with 115200 8N1
> >I am not able to open the com port using putty.
>
> Do you have privileges for the device? May not be relevant, but
> connecting a USB<>Serial to the USB side of my BBB (I don't have a native
> Linux desktop computer, and Windows won't be helpful to you) shows up like
>
> crw-rw 1 root dialout 188,  0 Jul  2 13:21 /dev/ttyUSB0
>
> the default user for the machine does belong to the dialout group.
>
> I got the same thing for Debian running inside VirtualBox /after/
> manually selecting the USB device from the VB0x menu...
>
> BUT... unlike the BBB, my user account under VBox does NOT belong to
> the dialout group, so I would have not permission to use it without making
> changes...
>
> crw-rw 1 root dialout 188,  0 Jul  2 13:31 /dev/ttyUSB0
> wulfraed@debian:~$ groups
> wulfraed cdrom floppy sudo audio dip video plugdev netdev bluetooth lpadmin
> scanner vboxsf
> wulfraed@debian:~$ sudo usermod -a -G dialout wulfraed
> [sudo] password for wulfraed:
>
> 
>
> wulfraed@debian:~$ groups
> wulfraed dialout cdrom floppy sudo audio dip video plugdev netdev bluetooth
> lpadmin scanner vboxsf
> wulfraed@debian:~$
>
>
>
> --
> Dennis L Bieber
>
>
> --
> 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 [email protected].
>
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/beagleboard/rqhudg5e0ekfsmaetfe966socu9l1telkn%404ax.com
> .
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups
> "BeagleBoard" group.
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> 
> .
>
-- 
V.K.CHIKKADI

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Re: [beagleboard] Re: Debug serial console not working

2021-07-02 Thread Vinayakumar Chikkadi 
Hi Dennis,

Good day to you

I have given permission by running

sudo chmod 0777 /dev/ttyUSB0

Now I am able to open in putty but not receiving any data from bbb. Seems
the issue with usb to serial cable.

I got similar cable what you just mentioned on amazon.

Probably I would try to procure one from adafruit.

Thank you, it was of great help to me.
I would check with different cables and come back if problem persists.

Regards,
Vinay


On Fri, 2 Jul 2021 at 11:15 PM, Dennis Lee Bieber 
wrote:

> On Fri, 2 Jul 2021 15:44:12 +0530, in gmane.comp.hardware.beagleboard.user
> Vinayakumar Chikkadi 
> wrote:
>
>
> >I am using the prolific usb to serial connector. After I connect the usb
>
> WHICH "prolific usb to serial"?  They have a whole slew of
> different
> models. And that doesn't count the packagers using a Prolific chip in their
> products (cf:
> https://www.amazon.com/prolific-usb-serial/s?k=prolific+usb+to+serial )
> I'm guessing something similar to
>
> https://www.amazon.com/Serial-Adapter-Signal-Prolific-Windows/dp/B07R8BQYW1/ref=sr_1_8?dchild=1&keywords=prolific+usb+to+serial&qid=1625245702&sr=8-8
>
> I can't really help with Prolific -- most of my USB<>serial
> devices are
> FTDI chips. I think the Adafruit 4-pin cable is the only Prolific chip
> device I have.
>
> >cable & When I check on Ubuntu with dmesg | tail
> >I could see it’s getting enumerated as ttyUSB0
> >When I open with putty on the path
> >/dev/ttyUSB0 with 115200 8N1
> >I am not able to open the com port using putty.
>
> Do you have privileges for the device? May not be relevant, but
> connecting a USB<>Serial to the USB side of my BBB (I don't have a native
> Linux desktop computer, and Windows won't be helpful to you) shows up like
>
> crw-rw 1 root dialout 188,  0 Jul  2 13:21 /dev/ttyUSB0
>
> the default user for the machine does belong to the dialout group.
>
> I got the same thing for Debian running inside VirtualBox /after/
> manually selecting the USB device from the VB0x menu...
>
> BUT... unlike the BBB, my user account under VBox does NOT belong
> to
> the dialout group, so I would have not permission to use it without making
> changes...
>
> crw-rw 1 root dialout 188,  0 Jul  2 13:31 /dev/ttyUSB0
> wulfraed@debian:~$ groups
> wulfraed cdrom floppy sudo audio dip video plugdev netdev bluetooth lpadmin
> scanner vboxsf
> wulfraed@debian:~$ sudo usermod -a -G dialout wulfraed
> [sudo] password for wulfraed:
>
> 
>
> wulfraed@debian:~$ groups
> wulfraed dialout cdrom floppy sudo audio dip video plugdev netdev bluetooth
> lpadmin scanner vboxsf
> wulfraed@debian:~$
>
>
>
> --
> Dennis L Bieber
>
> --
> 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 [email protected].
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/beagleboard/rqhudg5e0ekfsmaetfe966socu9l1telkn%404ax.com
> .
>
-- 
V.K.CHIKKADI

-- 
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Re: [beagleboard] Re: Debug serial console not working

2021-07-02 Thread 'Mark Lazarewicz' via BeagleBoard 
Using Serial Debug Port on BeagleBone Black - KiranPalla.com  
|  
|   
|   
|   ||

   |

  |
|  
|   |  
Using Serial Debug Port on BeagleBone Black - KiranPalla.com
 
It is interesting to see boot messages while the OS is coming up on BeagleBone 
Black. The messages are useful …
  |   |

  |

  |

  


Sent from Yahoo Mail on Android 
 
  On Fri, Jul 2, 2021 at 12:44 PM, Dennis Lee Bieber 
wrote:   On Fri, 2 Jul 2021 15:44:12 +0530, in 
gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:


>I am using the prolific usb to serial connector. After I connect the usb

    WHICH "prolific usb to serial"?  They have a whole slew of different
models. And that doesn't count the packagers using a Prolific chip in their
products (cf:
https://www.amazon.com/prolific-usb-serial/s?k=prolific+usb+to+serial )
I'm guessing something similar to
https://www.amazon.com/Serial-Adapter-Signal-Prolific-Windows/dp/B07R8BQYW1/ref=sr_1_8?dchild=1&keywords=prolific+usb+to+serial&qid=1625245702&sr=8-8

    I can't really help with Prolific -- most of my USB<>serial devices are
FTDI chips. I think the Adafruit 4-pin cable is the only Prolific chip
device I have.

>cable & When I check on Ubuntu with dmesg | tail
>I could see it’s getting enumerated as ttyUSB0
>When I open with putty on the path
>/dev/ttyUSB0 with 115200 8N1
>I am not able to open the com port using putty.

    Do you have privileges for the device? May not be relevant, but
connecting a USB<>Serial to the USB side of my BBB (I don't have a native
Linux desktop computer, and Windows won't be helpful to you) shows up like

crw-rw 1 root dialout 188,  0 Jul  2 13:21 /dev/ttyUSB0

the default user for the machine does belong to the dialout group.

    I got the same thing for Debian running inside VirtualBox /after/
manually selecting the USB device from the VB0x menu...

    BUT... unlike the BBB, my user account under VBox does NOT belong to
the dialout group, so I would have not permission to use it without making
changes...

crw-rw 1 root dialout 188,  0 Jul  2 13:31 /dev/ttyUSB0
wulfraed@debian:~$ groups
wulfraed cdrom floppy sudo audio dip video plugdev netdev bluetooth lpadmin
scanner vboxsf
wulfraed@debian:~$ sudo usermod -a -G dialout wulfraed
[sudo] password for wulfraed: 



wulfraed@debian:~$ groups
wulfraed dialout cdrom floppy sudo audio dip video plugdev netdev bluetooth
lpadmin scanner vboxsf
wulfraed@debian:~$ 



-- 
Dennis L Bieber

-- 
For more options, visit http://beagleboard.org/discuss
--- 
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-- 
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[beagleboard] Re: Debug serial console not working

2021-07-02 Thread Dennis Lee Bieber 
On Fri, 2 Jul 2021 15:44:12 +0530, in gmane.comp.hardware.beagleboard.user
Vinayakumar Chikkadi 
wrote:


>I am using the prolific usb to serial connector. After I connect the usb

WHICH "prolific usb to serial"?  They have a whole slew of different
models. And that doesn't count the packagers using a Prolific chip in their
products (cf:
https://www.amazon.com/prolific-usb-serial/s?k=prolific+usb+to+serial )
I'm guessing something similar to
https://www.amazon.com/Serial-Adapter-Signal-Prolific-Windows/dp/B07R8BQYW1/ref=sr_1_8?dchild=1&keywords=prolific+usb+to+serial&qid=1625245702&sr=8-8

I can't really help with Prolific -- most of my USB<>serial devices are
FTDI chips. I think the Adafruit 4-pin cable is the only Prolific chip
device I have.

>cable & When I check on Ubuntu with dmesg | tail
>I could see it’s getting enumerated as ttyUSB0
>When I open with putty on the path
>/dev/ttyUSB0 with 115200 8N1
>I am not able to open the com port using putty.

Do you have privileges for the device? May not be relevant, but
connecting a USB<>Serial to the USB side of my BBB (I don't have a native
Linux desktop computer, and Windows won't be helpful to you) shows up like

crw-rw 1 root dialout 188,  0 Jul  2 13:21 /dev/ttyUSB0

the default user for the machine does belong to the dialout group.

I got the same thing for Debian running inside VirtualBox /after/
manually selecting the USB device from the VB0x menu...

BUT... unlike the BBB, my user account under VBox does NOT belong to
the dialout group, so I would have not permission to use it without making
changes...

crw-rw 1 root dialout 188,  0 Jul  2 13:31 /dev/ttyUSB0
wulfraed@debian:~$ groups
wulfraed cdrom floppy sudo audio dip video plugdev netdev bluetooth lpadmin
scanner vboxsf
wulfraed@debian:~$ sudo usermod -a -G dialout wulfraed
[sudo] password for wulfraed: 



wulfraed@debian:~$ groups
wulfraed dialout cdrom floppy sudo audio dip video plugdev netdev bluetooth
lpadmin scanner vboxsf
wulfraed@debian:~$ 



-- 
Dennis L Bieber

-- 
For more options, visit http://beagleboard.org/discuss
--- 
You received this message because you are subscribed to the Google Groups 
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