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TMS320F28069M: Error connecting to the target: (Error -1155 @ 0x0)

Vijay Maddali
Prodigy 80 points

Part Number: TMS320F28069M
Other Parts Discussed in Thread: UNIFLASH,

I used Uniflash to download boot code that tries to set the PLLCR registers etc. After the code is flashed I am not able to connect to it either with code composer or with uniflash. I get the following message when I try to run debugger in Code Composer:

Error connecting to the target:

(Error -1155 @ 0x0)

Device may be operating in low-power mode. The debugger has forced the device to wake up. Choose 'OK' to attempt to complete the debug connection.

(Emulation package 8.0.27.9)

If erasing all flash would fix the issue?

I am working with LaunchXL Launchpad for TMS320F28069M.

  • 0
    TI__Guru* 85730 points

    Vijay,

    You may have chosen an unsupported PLLCR setting that is causing the device to run out of spec.  There is a boot mode called "Wait Boot" that will re-direct the MCU to a holding loop so that you can connect via JTAG/CCS and then halt/re-program flash, etc.

    Here is a picture from the LaunchPad Schematic showing the jumper settings for Wait Boot.  

  • 0 in reply to MatthewPate
    Prodigy 80 points
    Wait boot setting as per the table should be 1 and 3 off and 2 on. Right? Anyway that didn’t work. Got the following message:

    Error-1135@0x0

    However, turned on TRST (sw3) and turned off WAIT (sw2) and GPIO34 (sw3). That worked. Was able to load another working code.