How can I read bytes from flash?

Question

developer.nordicsemi.com/.../a00935.html 
 The doc seems to provide only write functions.
And, the flashwrite example doesn't show how to read from flash even after device rebooted.
How can I read something later that has been stored in flash?

Susheel Nuguru · Accepted Answer

You do not need NVMC hardware or API to read the flash memory. Just read it like any other memory. 
 for example, if you want to read 2 bytes of flash located at 0x21000 then the below code will do it 
 #define STORAGE_ADR 0x21000
uint16_t value = *(uint16_t *)ptr;
 
 or If you want to compare it with some thing then better would be to do like below 
 if(*((uint16_t *)STORAGE_ADR) == 0xff)
 {
 do something;
 }

How can I read bytes from flash?

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