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RTOS/CC2640R2F: PDMCC26XX driver initialization

Oytun Yapar
Prodigy 200 points
Part Number: CC2640R2F

Tool/software: TI-RTOS

Hello,

    PDMCC26XX driver initialization is failing due to failing of PDMCC26XX_I2S_open.

    In PDMCC26XX_I2S_open function, PDMCC26XX_I2S_allocateBuffers function fails, because malloc function returns NULL.

    ICall_malloc and ICall_free functions are selected as malloc and free functions respectively. What do you suggest?

Regards.

Oytun

  • 0
    TI__Genius 11740 points
    Hi Oytun,

    There's a few different ways to increase the amount of RAM allocated to the ICall Heap. Note that the ICall Heap is always the space remaining after all static and application specific memory has been allocated.

    You can eliminate static RAM usage in your application, this can be done by doing more dynamic allocation instead of defining static buffers.

    You can also use the AUX Ram, and store some statically allocated variables there.

    You can use Cache as RAM - this will move application specific memory there. (.bss)

    Cache as RAM is probably the easiest one to implement, see software-dl.ti.com/.../memory_management.html and will provide you with the most amount of potiental ICall Heap. (At least to make sure the PDM driver can successfully open)

    Regards,
    Rebel