bcmserver.c usage and preconditions

bcmserver.c usage and preconditions

[Patrick Menschel]

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Hi,

I'd like to ask what preconditions are necessary for the bcmserver.c
example to work.

1. I setup can0

~$ sudo ip link set can0 up type can bitrate 500000

2. then start bcmserver

~$ bcmserver

3. and input the line

~$ can0 A 1 0 123 8 11 22 33 44 55 66 77 88

but unfortunately I don't get any output at all.

I believe it's my fault since this is the result on both BananaPi and
BeagleBoneBlack. The Bpi has the bcm compiled into the kernel and the
BBB has the can-bcm.ko properly loaded.

~$ modinfo can-bcm
filename:       /lib/modules/4.1.15-ti-rt-r43/kernel/net/can/can-bcm.ko
alias:          can-proto-2
author:         Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
license:        Dual BSD/GPL
description:    PF_CAN broadcast manager protocol
depends:        can
intree:         Y
vermagic:       4.1.15-ti-rt-r43 SMP preempt mod_unload modversions
ARMv7 thumb2 p2v8

Thanks and Best Regards,
Patrick


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RE: bcmserver.c usage and preconditions

[Misra Pankaj Kumar (RBEI/EEA2)]

Hi Patrick,

Have you tested CAN line without bcmserver. I mean is the CAN bus functional, are you able to transmit receive frames.

You can test it with canutils.  
<http://elinux.org/Can-utils>


Best regards

Pankaj Kumar Misra
RBEI/EEA2  

Tel. +49(711)8113659089 | Mobile +4915145771414


-----Original Message-----
From: linux-can-owner@vger.kernel.org [mailto:linux-can-owner@vger.kernel.org] On Behalf Of Patrick Menschel
Sent: Wednesday, March 30, 2016 8:01 AM
To: linux-can <linux-can@vger.kernel.org>
Subject: bcmserver.c usage and preconditions

Hi,

I'd like to ask what preconditions are necessary for the bcmserver.c
example to work.

1. I setup can0

~$ sudo ip link set can0 up type can bitrate 500000

2. then start bcmserver

~$ bcmserver

3. and input the line

~$ can0 A 1 0 123 8 11 22 33 44 55 66 77 88

but unfortunately I don't get any output at all.

I believe it's my fault since this is the result on both BananaPi and
BeagleBoneBlack. The Bpi has the bcm compiled into the kernel and the
BBB has the can-bcm.ko properly loaded.

~$ modinfo can-bcm
filename:       /lib/modules/4.1.15-ti-rt-r43/kernel/net/can/can-bcm.ko
alias:          can-proto-2
author:         Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
license:        Dual BSD/GPL
description:    PF_CAN broadcast manager protocol
depends:        can
intree:         Y
vermagic:       4.1.15-ti-rt-r43 SMP preempt mod_unload modversions
ARMv7 thumb2 p2v8

Thanks and Best Regards,
Patrick

Re: bcmserver.c usage and preconditions

[Patrick Menschel]

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Hi Pankaj,

CAN Bus is functional in both directions, rx and tx .

1. cansend works properly
2. candump also works properly

I'm just trying to verify if it's just me or the bcm.
I expect a usage error because I run a non-modified debian 8 image on
the BeagleBoneBlack, which shows exactly the same behaviour.

Thanks and Best Regards,
Patrick


Am 30.03.2016 um 09:57 schrieb Misra Pankaj Kumar (RBEI/EEA2):
> Hi Patrick,
> 
> Have you tested CAN line without bcmserver. I mean is the CAN bus functional, are you able to transmit receive frames.
> 
> You can test it with canutils.  
> <http://elinux.org/Can-utils>
> 
> 
> Best regards
> 
> Pankaj Kumar Misra
> RBEI/EEA2  
> 
> Tel. +49(711)8113659089 | Mobile +4915145771414
> 
> 
> -----Original Message-----
> From: linux-can-owner@vger.kernel.org [mailto:linux-can-owner@vger.kernel.org] On Behalf Of Patrick Menschel
> Sent: Wednesday, March 30, 2016 8:01 AM
> To: linux-can <linux-can@vger.kernel.org>
> Subject: bcmserver.c usage and preconditions
> 
> Hi,
> 
> I'd like to ask what preconditions are necessary for the bcmserver.c
> example to work.
> 
> 1. I setup can0
> 
> ~$ sudo ip link set can0 up type can bitrate 500000
> 
> 2. then start bcmserver
> 
> ~$ bcmserver
> 
> 3. and input the line
> 
> ~$ can0 A 1 0 123 8 11 22 33 44 55 66 77 88
> 
> but unfortunately I don't get any output at all.
> 
> I believe it's my fault since this is the result on both BananaPi and
> BeagleBoneBlack. The Bpi has the bcm compiled into the kernel and the
> BBB has the can-bcm.ko properly loaded.
> 
> ~$ modinfo can-bcm
> filename:       /lib/modules/4.1.15-ti-rt-r43/kernel/net/can/can-bcm.ko
> alias:          can-proto-2
> author:         Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
> license:        Dual BSD/GPL
> description:    PF_CAN broadcast manager protocol
> depends:        can
> intree:         Y
> vermagic:       4.1.15-ti-rt-r43 SMP preempt mod_unload modversions
> ARMv7 thumb2 p2v8
> 
> Thanks and Best Regards,
> Patrick
> 
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> 


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Re: bcmserver.c usage and preconditions

[Oliver Hartkopp]

Hi Patrick,

On 03/30/2016 10:32 AM, Patrick Menschel wrote:
> Hi Pankaj,
>
> CAN Bus is functional in both directions, rx and tx .
>
> 1. cansend works properly
> 2. candump also works properly
>
> I'm just trying to verify if it's just me or the bcm.

It's you :-)

>>
>> 2. then start bcmserver
>>
>> ~$ bcmserver
>>
>> 3. and input the line
>>
>> ~$ can0 A 1 0 123 8 11 22 33 44 55 66 77 88
>>
>> but unfortunately I don't get any output at all.

The bcmserver creates an IP server listening on port 28600 on localhost.

So you would need to connect this server e.g. with netcat first and then 
type the according command (with '<' and '>' tags!!) into the netcat shell.

Regards,
Oliver

Re: bcmserver.c usage and preconditions

[Patrick Menschel]

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Thanks Oliver,

based on the usage examples in the file header I thought it reads from
stdin ;-P

I have it working now on both BananaPi and BeagleBoneBlack.

Regards,
Patrick


Am 30.03.2016 um 13:59 schrieb Oliver Hartkopp:
> Hi Patrick,
> 
> On 03/30/2016 10:32 AM, Patrick Menschel wrote:
>> Hi Pankaj,
>>
>> CAN Bus is functional in both directions, rx and tx .
>>
>> 1. cansend works properly
>> 2. candump also works properly
>>
>> I'm just trying to verify if it's just me or the bcm.
> 
> It's you :-)
> 
>>>
>>> 2. then start bcmserver
>>>
>>> ~$ bcmserver
>>>
>>> 3. and input the line
>>>
>>> ~$ can0 A 1 0 123 8 11 22 33 44 55 66 77 88
>>>
>>> but unfortunately I don't get any output at all.
> 
> The bcmserver creates an IP server listening on port 28600 on localhost.
> 
> So you would need to connect this server e.g. with netcat first and then
> type the according command (with '<' and '>' tags!!) into the netcat shell.
> 
> Regards,
> Oliver


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