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I am trying to connect to NXP iMX7 SABRE board using usb cable as a serial connection.
How should I configure the debugger to connect?
I am assuming that you are trying to debug the i.MX7 SABRE board using a JTAG debugger unit such as a ULINKpro / ULINKpro D or DSTREAM unit in conjunction with DS-5.
Is that correct ?
If it is not then do please clarify. But that's what you need to debug it. And the support for this should work out of the box using a new enough version of DS-5 such as v5.27.1.
Note that there should be a keyway on the JTAG connector (J12, it's a CoreSight-10 way, see pin out at https://developer.arm.com/docs/dui0499/latest/arm-dstream-target-interface-connections/the-coresight-10-connector-pinouts-and-interface-signals/coresight-10-pinouts ) but this is not present on the board connector here.
So if you cannot connect a CoreSight-10 cable to it then I would suggest GENTLY bending the pin 7 out of the way (towards the edge of the board) using some long-nosed pliers in order to allow the connector to fit properly.
Note that I cannot be held responsible for damage to your board, if you are not confident in doing this then please find someone who can assist.
Do please let me know if I have understood what you are asking ?
Thanks Stuart, the connector's coding you mentions is very useful.