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My internet was disconnected when Code Composer was starting to flash the program into TM4C123 launchpad. The error message appeared "Error connecting to the target: Frequency is out of range." Subsequently I keep getting the same message when I

John Chee
Prodigy 70 points

My internet was disconnected when Code Composer was starting to flash a program into TM4C123 launchpad (after clicking debug button). The error message appeared "Error connecting to the target: Frequency is out of range." Subsequently I keep getting the same message whenever I try to debug and load any working program. How can I recover from this problem?

  • 0
    TI__Guru**** 244400 points

    Hello John,

    The title seems to be misleading...

    The issue you may be facing is that the TM4C123 device has been set to a low frequency and the JTAG Emulator is still at 1MHz. Were you able to flash a program successfully before the issue came up? If yes, then what was the program using the System Clock as? If no, then can you check the CCS Targetr Configuration Setting so that the JTAG frequency can be reduced.

    If nothing else works, then try a JTAG Unlock Sequence...

    Regards

    Amit

  • 0 in reply to Amit Ashara
    Prodigy 70 points

    Thanks. Following your advice did not work. In fact, my PC Device Manager could not even detect "Stellaris" being plugged into USB Port. I then decided to demonstrate the problem to my colleague using his PC to demo the failure, and suddenly Tiva C launchpad could be flashed again. Subsequently, I could use back my PC to flash. Don't understand why though..  but happy that it worked!