Flash operations do not work in the hard fault handler (HardFault_c_handler function).

[ilyasbsran]

Hi,

I want to log the error type and program counter when a hard fault occurred. I implemented some algorithm for that, I am using fds library for saving this information to flash. I do not get an error when saving hard fault information on the flash. 

How can i save hard fault information to the flash?

[Vidar Berg]

With a flash write operation you can only flip bits from '1's to '0's. To get the bits back to '1' you need to erase the flash page.