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CCS/RM48L952: Find the cause of repetitive reset

user4127213
Prodigy 250 points
Part Number: RM48L952

Tool/software: Code Composer Studio

Hello,

I use CCS and JTAG(TMS320-XDS100V3+) to debug the program. I fould repetitive reset from micro-controller. I really would like to determine the reason of reset.

Are there any good way to determine the reason of reset.

Best Regards,

Sone

  • 0
    TI__Mastermind 21425 points

    Hello,

    Are you able to connect to the device or resets are too frequent and makes this impossible?

    If you can not connect to MCU please, try the following:

  • 0 in reply to Miro
    Prodigy 10 points

    Hello, Miro,

    I could connect the device(=J-Tag) to micro-controller. The reset is repeated around 30 seconds intervals. I think the reason is overflow of stack. Do you know any way to confirm the stack is overflowed or not?

    Best Regards,

    Sone

  • 0 in reply to user5157554
    TI__Guru**** 197166 points

    Hello Sone,

    Is the MCU executing any code in flash when the reset occurs? Is the watchdog enabled in your code? Does the crystal output a correct clock? If the clock frequency is out of the range, it may cause the device reset.

    1. Does your code perform the CPU selftest? The STC generates a CPU reset after completion of the test regardless of pass or fail.

    2. Is the power supply or power supply connection stable? The device has a build-in voltage monitor. When the voltage monitor detects a low voltage on the IO supply (3.3V), it will assert a power-on reset. When the voltage monitor detects an out-of-range voltage on the core supply (1.2V), it asserts a power-on reset.

    You can increase the stack size through CCS and the linker cmd file.