[etherlab-dev] "Master still waiting for devices!" problem.

[周甫霖]

Hi Graeme,

I think that 1) and 2) was done correctly in my case.
For 3), I'll check dmesg.
For 4), I found the thread in 2013:
http://lists.etherlab.org/pipermail/etherlab-users/2013/002074.html
But I can't get the attachment since I'm not in the etherlab-user mail list.
Is there any other way to get the attachment?

Thank you for your response.
Best regards - Erix Chou

2017-01-19 5:27 GMT+08:00 Graeme Foot <Graeme.Foot at touchcut.com>:

> I can think of four possible errors at the moment:
>
>
> 1) Your ethercat configuration file isn't matching the correct MAC address.
>
>
> In /etc/sysconfig/ethercat you have "MASTER0_DEVICE="ff:ff:ff:ff:ff:ff"".
>  ff:ff:ff:ff:ff:ff matches the first available device, looking at devices
> in the order the drivers are loaded (in the DEVICE_MODULES key).  So you
> may have sepecified a MAC address that is not matching your device
>
>
>
> 2) You are not loading your device module.
>
>
> In /etc/sysconfig/ethercat you have "DEVICE_MODULES=".  This specifies
> the network driver modules (ethercat versions) that you want to run (space
> delimited list).  You should put your module first in the list if you use a
> generic MAC address (ie: ff:ff:ff:ff:ff:ff) in the setting above.
>
>
> eg:
>
> DEVICE_MODULES="cpsw e1000 e1000e"
>
>
>
> 3) Your driver doesn't work.
>
>
> Check dmesg for any errors.
>
>
>
> 4) Your driver is not correctly integrating with the EtherCAT master.
>
>
> There's various functions that your driver needs to interact with the
> master.  But from memory the one that tells the master that a device is
> available is:
>
> ecdev_offer();
>
>
>
> But the guts of it is that no offered net devices match the requirements
> of the MASTER0_DEVICE config setting.
>
>
>
> I wrote a patch for the CX2100 device a while ago.  You could look it up
> in the forums to check how it interacts with the master (or I could send it
> if you can't find it).  Look for the ecdev_... methods and the notes about
> the skb's.
>
>
>
> Regards,
>
> Graeme.
>
>
>
>
>
> ------------------------------
> *From:* etherlab-dev <etherlab-dev-bounces at etherlab.org> on behalf of 周甫霖
> <erixchou at mapacode.tw>
> *Sent:* Wednesday, 18 January 2017 9:26:42 PM
> *To:* etherlab-dev at etherlab.org
> *Subject:* [etherlab-dev] "Master still waiting for devices!" problem.
>
> Hi all,
>
> First appreciate the implement of etherlabmaster.
> I'm devolping a non-native supported ethernet device to be able to work as
> a RTDM EtherCAT master.
> What the device is one part of TI AM335x SoC and is named "cpsw".
> Everything smoothly while adapting driver code, building module file, and
> installing.
> But I was stuck by a problem when I try to start EtherCAT master.
> Following is my steps and message shown by dmesg:
>
> # /etc/init.d/ethercat start
> Starting EtherCAT master 1.5.2  done
>
> [   30.849754] EtherCAT: Requesting master 0...
> [   30.854265] EtherCAT ERROR 0: Master still waiting for devices!
>
> More information:
>
> # /opt/etherlab/bin/ethercat master
> Master0
>   Phase: Waiting for device(s)...
>   Active: no
>   Slaves: 0
>   Ethernet devices:
>     Main: a0:f6:fd:22:bd:ed (waiting...)
>       Link: DOWN
>       Tx frames:   0
>       Tx bytes:    0
>       Rx frames:   0
>       Rx bytes:    0
>       Tx errors:   0
>       Tx frame rate [1/s]:      0      0      0
>       Tx rate [KByte/s]:      0.0    0.0    0.0
>       Rx frame rate [1/s]:      0      0      0
>       Rx rate [KByte/s]:      0.0    0.0    0.0
>     Common:
>       Tx frames:   0
>       Tx bytes:    0
>       Rx frames:   0
>       Rx bytes:    0
>       Lost frames: 0
>       Tx frame rate [1/s]:      0      0      0
>       Tx rate [KByte/s]:      0.0    0.0    0.0
>       Rx frame rate [1/s]: -509579 -509608 -335544
>       Rx rate [KByte/s]:   845836.0 -469824.0 163840.0
>       Loss rate [1/s]:          0      0      0
>       Frame loss [%]:         0.0    0.0    0.0
>   Distributed clocks:
>     Reference clock: None
>     Application time: 0
>                       2000-01-01 00:00:00.000000000
>
>
>
> Could anyone kindly advice what is the key point to go forword form
> "waiting device"?
>
> Best regards - Erix Chou
>



-- 
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