Dear NXP Community,
I am currently working on a DMA transfer from memory to GPIO pin. However, when running the code, I get an assertion failed error ending in a loop with "__BKPT(0);". I am now configuring the security considerations (section 23.1.4 of reference manual). I think the problem lies in the fact that my DMA channel and memory are not configured in the same security mode (secure/non-secure). To perform the steps in 23.1.4 of the reference manual, i will set some registers. This can be mostly done with the defined macro's in for example PERI.DMA.h file. I came accross for example this macro:
#define AHBSC_MASTER_SEC_LEVEL_EDMA0_MASK (0xC0U)
#define AHBSC_MASTER_SEC_LEVEL_EDMA0_SHIFT (6U)
/*! eDMA0 - eDMA0
* 0b00..Non-secure and non-privileged Master
* 0b01..Non-secure and privileged Master
* 0b10..Secure and non-privileged Master
* 0b11..Secure and privileged Master
*/
#define AHBSC_MASTER_SEC_LEVEL_EDMA0(x) (((uint32_t)(((uint32_t)(x)) << AHBSC_MASTER_SEC_LEVEL_EDMA0_SHIFT)) & AHBSC_MASTER_SEC_LEVEL_EDMA0_MASK)
I am not sure what the the parameter x should indicate. Also in general, there are many macro's with such x as input parameter, however it is mostly not defined what the x is.
Does anyone know how I should interpret the x in this particular case and in general?
Kind regards,
Kevin Pang
