ESP32 IDF Protocol Examples not working

tom.holzwurm · August 17, 2019, 3:05pm

Dear colleagues,
I’m working with Platform IO for a little while and try to move my projects from Visual Studio Arduino framework to PIO and Visual Studio Code. WiFi and MQTT is mandatory as well as SNTP.
First of all I detected that my Arduino FW based projects all have trouble with the WiFi connection, I permanently ran into the obviously not uncommon error using the Arduino FW:
WiFiClient.cpp:455] flush(): fail on fd 57, errno: 104, “Connection reset by peer”.
So I moved to IDF and started with a simple example setting up WiFi and MQTT which works absolutely stable. But: I’m not able to get the “protocol” Examples working:
“fatal error: protocol_examples_common.h: No such file or directory”
The sources are available ( i.e. installed) but not accessible, can you please advice what to do:
get the Arduino stuff working
or
stick with the IDF ? And if how can I get the missing protocols working?
Thanks in advance
Regards
Tom

maxgerhardt · August 17, 2019, 3:34pm

Could you post a ZIP of your project (clean project before posting) for reproduction, otherwise it’s very hard to tell you what’s wrong.

tom.holzwurm · August 17, 2019, 9:46pm

I’m simply trying to get the original example running:
“esp-idf/sntp_example_main.c at master · espressif/esp-idf · GitHub”
Getting this working would be a first step,
Thanks in advance for any help,
Regards
Tom

maxgerhardt · August 17, 2019, 9:55pm

Have you tried using the example version for release 3.2 which is the ESP-IDF version included in PIO?

github.com

espressif/esp-idf/blob/release/v3.2/examples/protocols/sntp/main/sntp_example_main.c

/* LwIP SNTP example

   This example code is in the Public Domain (or CC0 licensed, at your option.)

   Unless required by applicable law or agreed to in writing, this
   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
   CONDITIONS OF ANY KIND, either express or implied.
*/
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event_loop.h"
#include "esp_log.h"
#include "esp_attr.h"
#include "esp_sleep.h"

This file has been truncated. show original

tom.holzwurm · August 18, 2019, 9:02pm

Thanks a lot, I wasn’t aware that it was an issue due to versioning !
Using the correct version from Version 3.2 did the trick.
Regards Thomas

chrisalfred · February 28, 2022, 4:36am

The IDF version with my PlatformIO is v4.3.2.
The example uses “protocol_examples_common.h” but the file is not found.

“protocol_examples_common.h” lives in C:\Users<USERNAME>.platformio\packages\framework-espidf\examples\common_components\protocol_examples_common\include

How do I add this directory to the build process?

maxgerhardt · February 28, 2022, 12:48pm

Copy the

folder in the components folder of your project, just like the documentation says.

chrisalfred · February 28, 2022, 9:20pm

It is possible to have a CMakeLists.txt in the “test” directory?

I tried, but I don’t think the test/CMakeLists.txt was read from the test directory.

maxgerhardt · March 1, 2022, 11:32am

I have no idea. The devs at Issues · platformio/platform-espressif32 · GitHub may know.