ESP32 Forum

So I've started to play with ESP-EYE board and ESP-WHO framework.
I first installed ESP-IDF 3.1.3, but the detection_with_command_line sample would just return camera errors, and recognition_solution would fail to build due to esp_http_server missing.

So I've now removed ESP-IDF 3.1.3, and install ESP-IDF 3.3-beta2 instead. recognition_solution builds fine, it can detect hilexin word, and create an access point to which I can connect with my Ubuntu 18.04 computer. But now when I try to access 192.168.4.1/face_stream in Firefox it will just load forever ("waiting for 192.168.4.1"), and show a white screen.

I guess it may be an issue with the IDF version I'm using. Thanks in advance.

Hi Jean-Luc,

looks like I have a similar problem. Maybe it helps knowing this is not a one time error.

I tried to compile the webserver example like this (changing serial port, adding wlan config and selecting AI-Thinker board in menuconfig):
and I get this error:
There was a commit changing the esp-idf version for esp-who very recently, so I guess this is the problem, but I dont know how to revert it (not used to git submodules).

I hope someone can help out here to fix that.

I read a bit about git submodules and tested a bit further:

I changed to esp-idf directory/submodule and did a git log to find all commits mentioning http_server.
I checked out commits preceeding those http_server commits one by one and rebuilt:
This did not help, same error. So I repeated this after changing the include from esp_http_server.h to http_server.h since I read the filename has changed at some point. Still no joy. I give up on this.

Btw. the CameraWebServer example in Arduino IDE compiles just fine, but the web page it serves is dead slow, like over a minute for the initial load and stills or streams only work sometimes, but mostly not
Well, at least I know now the hardware could work in principle and is not entirely useless.

The slowness of the arduino sample is gone if I do not use WLAN repeaters.
Seems espressifs wifi stack does not like having several stations with the same SSID around?
Had similar issues I could not narrow down until now with esp8266 too.

Pulled esp-who, that had some minor updates, but still no working webcamserver example for me.

I had the same problem and finally I found the solution.
I fixed the problem with the version 3.3. With this version you need to redefine your IDF_PATH with something like this : export IDF_PATH=~/esp32/esp-who/esp-idf

I found a part of the solution later here : https://tomono.tokyo/2019/03/11/7519/
it is in chinese language, but command line are clear !!
Enjoy
Patrice

Hi all,
Sorry for the late reply.
For the problem of compiling issue about 'httpd', the IDF should be synchronized with the submodule in the esp-who repo. Since the http server function interface has been changed from IDFv3.1, you have to update from that version. You can do `git submodule` to get the commit-id of esp-idf which is suitable for esp-who. Then go to your $IDF_PATH, do `git fetch` and chechout the commit-id which is copied from the esp-who submodule.