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TMS320F28377D: Program Loss

Hui Chen
Intellectual 890 points

Part Number: TMS320F28377D

Tool/software:

Hello, may I ask, my DSP28377 board, in the process of running the program, does not connect to DPRAM, the program runs normally. But when I connected the DPRAM port and turned on the power, I found that the program was not running by looking at the LED running light on the board and the printing serial port. The probability that the program is not running is about 2 in 1,000. After re-downloading the program, everything worked fine. How do I troubleshoot DSP28377 program not working?

  • 0
    TI__Genius 17291 points

    Hi Hui, If I understand correctly, the application boots and runs reliably if external RAM is not connected, however when connected, the device does not run the application approximately two times in every 1000 boots.  Have you connected to the device through JTAG to see where the code is hung?  If this is not possible, you might add some GPIO toggles in your application code to determine where the code is hanging.

    I want to get this assigned to the best subject matter expert.  Is the external RAM connected through EMIF? What is the function of the external RAM in the application?    In other words, if there is a timing or noise issue preventing proper communication to the external RAM, would that hang your application?