RT1062 software reset

[Svenifax]

Hello,

I'm trying to reset the RT1062 MCU via software. Some tests with different methods failed:

• NVIC_SystemReset();
• SRC_DoSoftwareResetARMCore0(SRC);
• WDOG_TriggerSystemSoftwareReset(WDOG1);
• wdog_config_t wdog_config;
  WDOG_GetDefaultConfig(&wdog_config);
  wdog_config.timeoutValue = 0x0U; /* Timeout value is (0x0 + 1)/2 = 0.5 sec. */
  WDOG_Init(WDOG1, &wdog_config);

After calling one of the them, the MCU hangs, maybe in the ROM bootloader.

The firmware image resides in the external NOR flash. The internal ROM bootloader loads the boot image into OCRAM and will be executed from this location.

How is a software reset performed on RT1062 MCUs?

[mjbcswitzerland]

Hi Sven

APPLICATION_INT_RESET_CTR_REG is the Cortex System Control Block register at 0xe000ed0c
VECTKEY is 0x05fa0000
and
SYSRESETREQ = 0x00000004


IOMUXC_GPR_GPR16_RESERVED is 0x00200000

Regards

Mark

[Svenifax]

Hello Mark,

unfortunately, all the methods doesn't work for me.

Are you reset the Flash via JEDEC-Reset (JESD252) before software reset?

Regards,
Sven

[mjbcswitzerland]

Hi Sven

No, there is no flash reset performed.

Regards

Mark

[mjbcswitzerland]

Hi

Does you application change FlexRAM layout?
If so the ROM loader doesn't seem to be able to handle resets and you need to set the FlexRAM back to its original state before using any of the methods.

Try some 1062 references at
https://www.utasker.com/iMX/RT1060.html
https://www.utasker.com/iMX/iMX_RT1062_OEM.html
https://www.utasker.com/iMX/Teensy_4_0.html
https://www.utasker.com/iMX/Teensy_4_1.html

which have command line menus of UART, USB-CD and/or Telnet. In the administrator menu there are commands to perform software resets and test watchdog resets. The applications run in ITC for maximum speed and solve the typical iMXT RT problems like this.

Regards

Mark
[uTasker project developer for Kinetis and i.MX RT]
Contact me by personal message or on the uTasker web site to discuss professional training, solutions to problems or rapid product development requirements

For professionals searching for faster, problem-free Kinetis and i.MX RT 10xx developments the uTasker project holds the key: https://www.utasker.com/iMX/RT1064.html

[Svenifax]

Does you application change FlexRAM layout?
If so the ROM loader doesn't seem to be able to handle resets and you need to set the FlexRAM back too its original state before using any of the methods.

No, my application doesn't change the FlexRAM layout.

@ NXP: Any ideas?

[jeremyzhou]

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
On my side, the NVIC_SystemReset() is good (My board is MIMXRT1060-EVK board).
According to your statement, you also use the Watchdog to reset.
in my opinion, it should work well.
Have a great day,
TIC

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