https://devzone.nordicsemi.com/f/nordic-q-a/64297/zephyr-json---json_obj_encode_buf-accesses-the-wrong-address-with-nested-arraysThere was a problem converting the structure to JSON. I have two structures And their description: I create a structure and initialize: Code for getting JSON: Using this structure, the json_obj_encode_buf function tries to access an inaccessibleen-USTelligent Community 13Wed, 29 Jul 2020 08:46:48 GMThttps://devzone.nordicsemi.com/thread/262132?ContentTypeID=1Wed, 29 Jul 2020 08:46:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ee21134-d9b9-41f0-a408-56e27765a9a6Yury Morgunov<p>My observations were confirmed when I added 1 to the size of the array. It turns out that +1 gives an additional address offset for addition_array_len. So this will work, but it&#39;s a crutch<br /><pre class="ui-code" data-mode="c_cpp">JSON_OBJ_DESCR_ARRAY(struct test_nested, addition_array, 9+1, addition_array_len, JSON_TOK_NUMBER),</pre></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/262119?ContentTypeID=1Wed, 29 Jul 2020 08:00:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2b12c48-10dd-4047-b3ac-3ead62fc9569Yury Morgunov<p>After going through the library with the debugger, I saw that addition_array_len was ignored after converting the first element of test_struct.</p> <p>Because of this, it turns out that when trying to process test_string2 from the second element of the test_struct array, the program does not refer to the string address, but to addition_array_len. addition_array_len is 5 so the program thinks that the line is at address 5 and breaks</p><div style="clear:both;"></div>