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Tiva C Launchpad

Tony Misiura
Prodigy 130 points

Other Parts Discussed in Thread: EK-TM4C123GXL

I'm migrating to Tiva C. I installed the latest CCS today and connected my EK-TM4C123GXL. I imported

Project 0 and built it. When I try to run the debugger I get: 

CORTEX_M4_0: Error connecting to the target: Frequency is out of range.

What am I doing wrong?

Thanks

  • Guru 86865 points
    Hi,

    Did you install Stellaris ICDI Drivers for your Tiva Launchpad?

    - kel
  • TI__Guru**** 171729 points
    Hi,

    In addition to Markel's remark, check the Windows Control Panel to see if device drivers are installed and if they are listed as "Stellaris In-Circuit Debug Interface".

    Unfortunately the JTAG debugger used by the original Tiva launchpad (ICDI) lacked any thorough diagnostics in its device drivers, therefore the error message you mentioned says very little about where the problem may be located (cable, USB port, board, etc.)

    Two additional details:
    - Make sure you have the USB cable connected to the connector closer to the top TM4C123 device (U2)
    - Make sure the small switch beside this USB connector is in the "Debug" position.

    Hope this helps,
    Rafael