i.MX ProcessorsのトピックMIMXRT1170 Pending interrupts

MIMXRT1170 Pending interrupts

GLantzTCore — Wed, 19 Mar 2025 19:02:30 GMT

I am trying to find a way to clear all pending interrupts in the MIMXRT1170. I have code that erases and programs external spi flash (using the MIMXRT1170-EVK and IAR embedded workbench). I disable interrupts before the code that erases sector by sector and programs each sector, and when the code completes, it enables interrupts and at that point the cpu resets. If I have the IAR i-jet debugger connected and use it to load my application and without any breakpoints set I start the application, it runs perfectly (no reset). When I change the dip switches to boot from the spi flash, the code resets upon interrupts being enabled. Any help would be appreciated.

Re: MIMXRT1170 Pending interrupts

Kan_Li — Thu, 20 Mar 2025 05:40:55 GMT

Hi @GLantzTCore ,

Was your code running from the same memory space? Basically when we run code to erase/program the flexspi flash, such operation should be issued from another memory space , such as ITCM or SDRAM, please kindly refer to the SDK demo of evkbmimxrt1170_flexspi_nor_polling_transfer_cm7 for details.

Have a great day,
Kan

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Re: MIMXRT1170 Pending interrupts

GLantzTCore — Thu, 20 Mar 2025 12:29:48 GMT

I am using the IAR Embedded Workbench as my tool base and this sets the named objects into a safe space to erase/program flash from. The application I am running is located in SPI Flash as well, so I have addressed the issue of erasing/writing flash from memory.

initialize by copy {
readwrite,

/* Explicitly place flash operation functions in RAM. */
object mflash_drv.o,
object fsl_flexspi.o,
object fsl_cache.o,
object flexspi_nor_flash_ops.o,
object dlUtils.o,

section .textrw,
section CodeQuickAccess,
section DataQuickAccess
};

The data programmed into the flash is complete as verified by a CRC that emcompasses the entire data block being written. So it is something that happens when I re-enable interrupts.

the code looks something like this:

asm("CPSID I"); //Mask interrupts

flexspi_nor_flash_init(SPIFLASH_BASE);

numSectors = (dataLen / SECTOR_SIZE);
if ((dataLen % SECTOR_SIZE) != 0)
numSectors++;

/* Enter quad mode. */
status = flexspi_nor_enable_quad_mode(SPIFLASH_BASE);

// erase all necessary sectors.
for (i = 32; i < numSectors+32; i++)
{
status = flexspi_nor_flash_erase_sector(SPIFLASH_BASE, i * SECTOR_SIZE);
if (status != kStatus_Success)
{
dlFlag = FALSE;
return status; // Error erasing, abort
}
for (j = 0; j < PAGES_PER_SECTOR; j++)
{
status = flexspi_nor_flash_page_program(SPIFLASH_BASE,
(i * SECTOR_SIZE) + (j * FLASH_PAGE_SIZE),
(const uint32_t *)(srcAddr));
srcAddr += FLASH_PAGE_SIZE;
if (status != kStatus_Success)
{
dlFlag = FALSE;
return status;
}
}
}

asm("CPSIE I"); //Unmask interrupts

Re: MIMXRT1170 Pending interrupts

Kan_Li — Fri, 21 Mar 2025 06:44:51 GMT

Hi @GLantzTCore ,

I did some test based on evkbmimxrt1170_flexspi_nor_polling_transfer_cm7 with interrupts disabled in the beginning and enabled in the end, the result is still ok. Please kindly refer to the following for details.

The board never resets here, but I am using MCUXpresso IDE instead, would you please try this IDE as well?

Have a great day,
Kan