Esp32 not compiling .c files

Projects Programming
1

Hello guys
don't know if this is a silly question or an intelligent on but never the less

am trying to use my esp32 read ibeacon tag using ble. so i found this library at github

=https://github.com/espressif/esp-idf/tree/master/examples/bluetooth/bluedroid/ble/ble_ibeacon/main

i tried opening the ibeacon_demo.c file with esp32 but had some issue with the .c extension so i changed it to .ino which then opens the file but give this error
"sorry, unimplemented: non-trivial designated initializers not supported
exit status 1"
when compiling.
am sure the error has to do with the extension and the #include files not able to be read by esp32.

so can anyone tell me please how i can run this code with esp32.
thanks..

2

I checked the code, and that is not arduino code, it is c.
so unless you restructure the code the arduino way (setup(), loop() it is not going to compile, ever....

3

You can look into the ESP32 CAN bus library which uses C and C++ code for some hints.

4

What line does the compiler complain about? From the message it appears to be using a C feature that the compiler included with the Arduino IDE has not implemented. Perhaps the code can be re-phrased to something the compiler can handle.

5

When programming an ESP32 you have 2 choices : use the Arduino IDE or use the ESP-IDF programming environment. The code you provide is designed for the last choice, and cannot be used with the Arduino IDE because it does not have a setup nor a loop function.

If you really want to test THIS code, you need to install the ESP-IDF environment, see here. If you accustomed with Arduino, it's not an easy move.

The other solution would be to rewrite the code using ESP32 Arduino-suited libraries and syntax (which is pretty similar to that of the ESP-IDF as they both use C codes, but with the setup and loop things) but I do not recommand that, because you would have to verify that all the libraries called in the code are accessible for the Arduino IDE:

#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include "nvs_flash.h"

#include "esp_bt.h"
#include "esp_gap_ble_api.h"
#include "esp_gattc_api.h"
#include "esp_gatt_defs.h"
#include "esp_bt_main.h"
#include "esp_bt_defs.h"
#include "esp_ibeacon_api.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
6

I found an arduino library to read the ble from

incase anyone needs it.