topic Re: Unable to access the Flash memory of IMX RT1170 in i.MX RT Crossover MCUs

Unable to access the Flash memory of IMX RT1170

Ragnar — Sat, 30 Dec 2023 15:17:21 GMT

Hello,

I'm using an IMX RT1170 EVK board for the product development and while I'm trying to access the flash memory which will starts form the address 0x30000000. I'm getting Hard fault and Bus fault.

CPU_MIMXRT1176DVMAA
CPU_MIMXRT1176DVMAA_cm7
DATA_SECTION_IS_CACHEABLE=0
_DEBUG=1
SDK_DEBUGCONSOLE=1
XIP_EXTERNAL_FLASH=1
XIP_BOOT_HEADER_ENABLE=1
USB_STACK_FREERTOS
USB_STACK_FREERTOS_HEAP_SIZE=32768
CACHE_MODE_WRITE_THROUGH=1
FSL_OSA_BM_TASK_ENABLE=0
FSL_OSA_BM_TIMER_CONFIG=0
MCUXPRESSO_SDK
FSL_SDK_ENABLE_DRIVER_CACHE_CONTROL=1
SDK_OS_FREE_RTOS
SERIAL_PORT_TYPE_UART=1
CR_INTEGER_PRINTF
PRINTF_FLOAT_ENABLE=0
__MCUXPRESSO
__USE_CMSIS
NDEBUG
__REDLIB__

As I'm using the FreeRtos, I'm disabling the interrupts too while accessing the flash

Please let me know do I need to change anything in the code or preprocessor

Thanks in Advance.

Regards,

Ragnar.

Re: Unable to access the Flash memory of IMX RT1170

Kan_Li — Tue, 02 Jan 2024 04:48:03 GMT

Hi @Ragnar ,

Actually the DFU demo starts from 0x60000000, so do you want the demo erase itself from the flash? Please kindly clarify.

Have a great day,
Kan

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Re: Unable to access the Flash memory of IMX RT1170

Ragnar — Tue, 02 Jan 2024 06:29:51 GMT

Hi, @Kan_Li

I think in RT 1170 the flash address starts form the 0x30000000 and I don't want to erase the whole flash but just a particular portion which is empty and want to write the downloaded firmware through the DFU to a specified flash address.

Hare are my MCU settings.

Thanks & Regards,

Ragnar.

Re: Unable to access the Flash memory of IMX RT1170

Ragnar — Tue, 02 Jan 2024 12:46:42 GMT

Hi @Kan_Li ,

evkmimxrt1170_flexspi_nor_polling_transfer_cm7 in this example I'm able to perform R\W operations on flash but when I integrated it with the DFU example in the USB examples I'm getting the above-mentioned errors.

Regards,

Ragnar.

Re: Unable to access the Flash memory of IMX RT1170

Kan_Li — Thu, 04 Jan 2024 03:32:17 GMT

Hi @Ragnar ,

I would recommend using the ROM API for the integration . Please kindly refer to boards\evkmimxrt1170\driver_examples\fsl_romapi for details.

Have a great day,
Kan

Re: Unable to access the Flash memory of IMX RT1170

Ragnar — Thu, 18 Jan 2024 08:28:00 GMT

Hi @Kan_Li,

I will try the example you said.

Thanks & Regards,

Ragnar.

Re: Unable to access the Flash memory of IMX RT1170

Ragnar — Thu, 18 Jan 2024 11:55:00 GMT

Hi @Kan_Li ,

I have tried integrating the ROM_API with the DFU example.

But after integrating before initializing the DFU I'm able to erase the flash. But when I try to write to the flash it is failing.

After initializing the DFU both the read/were failing.

Regards,

Ragnar.