how to store array of structs(48 bits) in flash?

[oyomj343]

This is the structure.I am using bitfields here, even if i don't the problem still exists.

struct CODE_T

{
uint32_t guest_code_start_time;
uint32_t guest_code_end_time;
uint32_t guest_code:30;
uint8_t is_ongoing:1;
uint8_t code_used:1;
};

The problem is it saves for first time,but on restart it shows some zero values.Also i am casting struct to char*. Pls help asap.

[awneil]

Show how you are trying to save it.

Remember that you can't re-write Flash - any Flash, not just Nordic - without erasing first ...

oyomj343 said:

it saves for first time,but on restart it shows some zero values

How do you determine that?

How did you determine that it wrote correctly the "first time" ?

How to properly post source code:

[oyomj343]

setcode is for setting the code and getcode for checking it. It's showing correct,but once i restart it won't.

[oyomj343]

Array that i am using

extern struct CODE_T guest_code_array[100];

Method for reading the data,...

ndef_file_load((uint8_t *)&guest_code_array,sizeof((uint8_t *)&guest_code_array));

Method for writing the data,...

err_code = ndef_file_update((const unsigned char *)&guest_code_array,sizeof((const unsigned char *)&guest_code_array));
APP_ERROR_CHECK(err_code);

[oyomj343]

Only the first member of struct is getting saved, else becomes 0.