Appropriate definition:

Solved it. Its due to padding.
https://stackoverflow.com/questions/119 ... ach-member

I am writing down the structure representing the user descriptor value 0x2904: Reference is here:https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.descriptor.gatt.characteristic_presentation_format.xml typedef struct { uint8_t _format; int8_t _exponent; uint16_t _un...

That is a 50-50 question as the specific MAC is computed in software except the Wifi station mode which is equal to the base MAC from the EFUSE. The EFUSE MAC is ideally unique. I did some digging and the ethernet MAC, wifi soft access point mode MAC and bluetooth MAC(Classic/BLE) are all derived fr...

I am currently needing to implement a BLE GATT server with 128 bit server and characteristic UUID's and I am using the GATTS_DEMO provided. I have dug through the internals till the btc level and I have implemented almost everything but I cant seem to figure out how to add multiple characteristics t...

Thank you everyone. Your insight helped. I believe I was writing out of bounds therefore the test codes were also reading out of bounds. Changing the code to: #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "stdio.h" void app_main(void) { int length=4; uint16_t *foo = (uint16_t*)m...

Thanks for the reply @Kolban. Sorry, This was meant to be a pointer variable to an unsigned 32 bit integer, not an actual 32 bit unsigned integer: uint32_t* foo=(uint32_t*)malloc(sizeof(uint32_t)*utf8string_length); The pointer points to the start of a sequence of UTF-8 characters in heap memory. A ...

I have a variable that is dynamically allocated at runtime, meant to store utf8strings. The utf8strings are converted from a byte sequence received via BLE from a user. The variable in this example here is named foo: uint32_t foo=(uint32_t*)malloc(sizeof(uint32_t)*utf8string_length); Once I have dat...