Nrf52832 flash save data problem

[wangshuai]

Hi Engineer
I am using nRF52832 to develop a product. I want to save a flag to flash (FDS) before leaving the factory, and then read this flag every time I turn it on, and enter the normal according to the flash save flag (0xAA). Mode and test mode; respectively:
1. The flag is not 0xAA; the product enters calibration mode.
2. The flag is 0xAA and the product enters normal mode.
I am testing normally, but I am worried that users will often read the flag saved by flash in the future; often reading flash will cause the flag to be wrong later?

[wangshuai]

I am very worried that if the user reads the flag is not 0xAA in the future, then the product will stay in the calibration mode forever and it will not work properly. How can I deal with this potential problem?

[Jørgen Holmefjord]

Hi,

Reading data from flash does not wear down the flash. only write/erase operations wears down the flash. The application code of the device is also written on the flash of the device, and is read as often as the flag you have stored.

Best regards,
Jørgen