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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

System console closes channel

I have a system console running to control my system via a Jtag -> Avalon MM Master, and it runs fine. But occasionally after I have configured my parameters and I try and read back some status it says "Channel closed".

In full:

error: master_read_32: com.altera.systemconsole.core.services.ChannelClosedException: Channel closed while executing

"master_read_32 $jtag_master2 0x800 16"

Any clues? Is this normal? Is something else interfering? Would an OpenCore Plus license being managed using the same USB-Blaster->Jtag connection interfere?

Struggling to find a reason.

The core that was configured still runs though, so it's not reset things or similar.

2 Replies

  • PareshKJoshi's avatar
    PareshKJoshi
    Icon for New Contributor rankNew Contributor
    2 years ago

    Try by reducing the jtag speed..
    Reducing the jtag speed worked for us.

    For example : With only 1 single USB blasterII plugged this will be, to make jtag Frequency 6MHz.

    >jtagconfig --setparam 1 JtagClock 6M

    Paresh K. Joshi

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