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Author Topic: How to detect CMD_FLASHERASE completion?  (Read 9747 times)

lorcap

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How to detect CMD_FLASHERASE completion?
« on: September 10, 2019, 10:11:07 AM »
Hi everyone,

my NOR FLASH memory can take several seconds, almost a minute, to fully erase its content. How do I know the process is completed? I cannot find any register or interrupt flag for that.

Should I wait for REG_CMD_READ to catch up with REG_CMD_WRITE?

Thanks in advance.
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BRT Community

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Re: How to detect CMD_FLASHERASE completion?
« Reply #1 on: September 10, 2019, 01:38:33 PM »
Hello,

Yes, after issuing the CMD_FLASHERASE command, waiting until the REG_CMD_READ and REG_CMD_WRITE pointers are equal will let you know the command has completed.

Best Regards,
BRT Community.
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lorcap

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Re: How to detect CMD_FLASHERASE completion?
« Reply #2 on: September 10, 2019, 02:31:56 PM »
Thank you very much for the quick reply.

I imagine the same applies to other FLASH-related commands.

I believe a hint in the Application Note (at "Flash Interface" chapter?) would be helpful for other developers, too.
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Re: How to detect CMD_FLASHERASE completion?
« Reply #3 on: September 11, 2019, 11:55:03 AM »
Hello,

Yes, that is correct.

Thanks for the suggestion, I will pass it on to the document team.

Best Regards,
BRT Community
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