[Rafael Hernández]

Digging a little bit deeper /usr/sbin/radio-reset-h5 is a simple script:

rmmod ohci_hcd
mts-io-sysfs store radio-reset 0
sleep 8
modprobe ohci_hcd

It already contains the “mts-io-sysfs store radio-reset 0” instruction!

On the other hand, be careful with the environment when you invoke radio-reset-h5, it assumes you have a PATH correctly initialized (which, for instance, may not be true in tasks triggered by cron).

/usr/sbin/radio-reset-h5: line 11: rmmod: not found
/usr/sbin/radio-reset-h5: line 12: mts-io-sysfs: not found
/usr/sbin/radio-reset-h5: line 14: modprobe: not found

So, maybe, this is the reason why radio-reset-h5 does not always recover the modem.

[Rafael Hernández]

Mark, what I see from the logs is this:

When the modem doesn’t work on startup, it is not because the mtcdp doesn’t recognize it. It does recognize it and sets it up correctly. The problem comes a few seconds after that: there is an entry in the messages log stating

mtcdp user.info kernel: usb 1-1: USB disconnect, address XX

and then it is rediscovered again

mtcdp user.info kernel: usb 1-1: new full speed USB device using at91_ohci and address YY

The rediscovery process enters an endless loop. Externally you may see that the LS led blinks once every 7 seconds.
Should this happen, the two instructions

/usr/sbin/mts-io-sysfs store radio-reset 0
/usr/sbin/radio-reset-h5

solve the situation

[Rafael Hernández]

I’ll try to catch some for you.
It is true that the sequence

old-radio-reset + reboot

does not always work. In some cases, my mtcdp needs 2-3 retries before detecting the modem again.

• This reply was modified 9 years, 7 months ago by Rafael Hernández.

[Rafael Hernández]

Hello,
I am having the same issue. What I used to do after detecting the modem’s lock up was to reboot the MTCDP. In a number of cases a soft reboot was not enough to to get the modem back to work. It needs a power down.
Playing around I discovered a way to recover the modem: perform an old-fashion reset before calling radio-reset-h5:

/usr/sbin/mts-io-sysfs store radio-reset 0
/bin/sleep 5s
/usr/sbin/radio-reset-h5

In my devices, I’m still rebooting them instead of issuing a radio-reset-h5.

• This reply was modified 9 years, 7 months ago by Rafael Hernández.

[Rafael Hernández]

MultiTech support has given me the solution:
u-boot setenv ethaddr XX:XX:XX:XX:XX:XX

• This reply was modified 9 years, 8 months ago by Rafael Hernández.

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