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CC2540 reset looping when using oad feature

Hrh Gui
Prodigy 40 points
Other Parts Discussed in Thread: CC2540

Hi,

I'm using a custom CC2540 board, and my project is based on the KeyFobDemo project.

Here are the preprocessor defined symbols of my project (without oad define) :

INT_HEAP_LEN=3072
HALNODEBUG
OSAL_CBTIMER_NUM_TASKS=1
HAL_AES_DMA=TRUE
POWER_SAVING
xPLUS_BROADCASTER
HAL_LCD=FALSE
HAL_LED=FALSE
GATT_TI_UUID_128_BIT

Then, here is my probem : the project with the oad feature (oad service, BIM, etc...) keeps resetting every almost 500ms (so i can't keep a ble connection with it),  while the project without works fine.


I found that with "HAL_LED=TRUE", there's no more resetting and i can connect to it, but then, the led pins are disturbed (by the led driver i guess).

Since i need to free the led pins that i'm interested in (P1_0, P1_1), i would like to keep HAL_LED=FALSE.

Any idea about the "reset loop"?

Best regards,

Gui

  • 0
    TI__Mastermind 34660 points
    How is it resetting? Do you hit a breakpoint in main()? Is the reset line going low?

    Is this custom hardware or a TI reference platform?
  • 0 in reply to Tim C
    Prodigy 40 points

    It's custom hardware.  Here is the reset command line :

    Mainly, it jumps between 2.2V and 2.6V.

    For now, the only way i found is too keep HAL_LED=TRUE and redirect the LEDs on unused pins, in hal_board_cfg.h :

    #define LED1_SBIT                    P1_7

    #define LED2_SBIT                    P1_6

    So I'm sure my issue is somehow linked with the led management but I still don't know why the LED pins are disturbed while HAL_LED=FALSE (preprocessor define).

    Best regards,

    Gui

  • 0 in reply to Hrh Gui
    TI__Mastermind 34660 points
    I don't see how writing to an LED would cause a reset. I would recommend having your schematic reviewed by our hardware team. If you send me a PM with your schematic, I can forward it to them.