How to know it started first time after flash firmware.

[mobi]

I'm actually writing some data to the flash. I'm using pstorage api interface.

But whenever I flash the new firmware, I get some garbage data. in my main function I would like to know that, after flashing a new firmware, it started for the first time, so I clear the garbage data, and want to make sure it is not result of a reset or a manual reset etc.

Thanks

[mobi]

Hi Hung, I have implemented similar to what you suggested already, that is, I write some header in flash. On Start of the firmware, I read header, if the header is not correct, that mean entire flash data is not valid and I need to erase that. But I have to waste a page data (140 bytes). Rest of the pages are used for other data and information storage. So, if there is an alternate to wasting page data, that will be great.