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vikas Nagpal
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Asked: 2022-12-09T13:08:22+05:30 In:

IWDT not working Ra6m1 MCU?

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Hi,

I am using Ra6m1 MCU
I’ve 2 partitions

1. Bootloader partition from 0x00000000 to 0x00010000 flash memory
2. Application partition from 0x00010000 to 0x00080000

The problem I want to use IWDT at the Application partition, I’ve started iwdt at OFS0, but it doesn’t work.

Still, if I change the flash address of the Application partition to 0x00000000, IWDT works typically.

I suppose the problem relates to an option- setting memory position on flash. When I set the start address at 0x00010000( which is different from the initial address 0x00000000) = > the option- setting memory address will start from 0x00010400( according to” Renesas RA6M1 Group User’s Manual Hardware”), but the system may only read 0x00000400 so it keeps iwdt disable.

So how can I solve this problem?

Thank You

iwdtmcura6m1renesas
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    1. Best Answer

      Hi Son, The option-setting memory( where the 0FS0 register exists) determines the state of the MCU after a reset. So this particular address will be read to configure WDT and IWDT when the system boots. The way to change these registers is from the bootloader image, as I explained. You may find someRead more

      Hi Son,

      The option-setting memory( where the 0FS0 register exists) determines the state of the MCU after a reset. So this particular address will be read to configure WDT and IWDT when the system boots. The way to change these registers is from the bootloader image, as I explained.
      You may find some useful information about bootloader applications here.

      Let us know if you have further questions.
      Regards,
      Alex

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