Provisioning example fails to scan networks

[edg2411]

Board

esp32 wroom

Device Description

it is a custom board but uses the esp32 wroom 32e

Hardware Configuration

nothing strange

Version

latest master (checkout manually)

IDE Name

platformio

Operating System

windows 10

Flash frequency

40mhz

PSRAM enabled

yes

Upload speed

115200

Description

the provisioning example provided in the arduino libraries dont find networks by scanning or not scanning at all i dont know. The esp-idf version of the example works just fine im using the android provisioning app.
I see other issues but no one seems to help me

Sketch

it is the example without modifications, im using softap but same problem happens with bt

Debug Message

cant see any message, just not finding it in the app

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[PilnyTomas]

Hi @edg2411 , could you please send a link to an exact example?
Please try to change the debug level to verbose, compile & flash again and post the serial output.
Can you please tell me something about the WiFis you expect to be found?

[edg2411]

Hi thank you for replying

https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFiProv/examples/WiFiProv/WiFiProv.ino
it is the example that offers arduino ide
i did some debug and it is scanning the networks that are available just wifis from routers and common APs like my home network..
As I said when using the same example but from the idf sdk which use the same libraries i think it works just fine.. the networks appear in the app.
https://github.com/espressif/esp-idf/tree/master/examples/provisioning this is the idf example that its working for me
https://github.com/espressif/esp-idf-provisioning-android and this is the app that im using for both examples..
I will do some debug with verbose level tomorrow if i can

[edg2411]

I changed the compiler option to verbose and now its scanning and showing the networks

[ 91][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 0 - WIFI_READY
[ 93][I][WiFiProv.cpp:137] beginProvision(): Starting provisioning AP using SOFTAP. service_name : Prov_123, pop : abcd1234
[ 93][V][WiFiGeneric.cpp:515] _arduino_event_cb(): Provisioning Initialized!
[ 190][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 33 - PROV_INIT
[ 190][V][WiFiGeneric.cpp:340] _arduino_event_cb(): STA Started
[ 197][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 2 - STA_START
[ 210][V][WiFiGeneric.cpp:392] _arduino_event_cb(): AP Started
[ 211][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 10 - AP_START
[ 214][V][WiFiGeneric.cpp:395] _arduino_event_cb(): AP Stopped
[ 222][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 11 - AP_STOP
[ 223][V][WiFiGeneric.cpp:392] _arduino_event_cb(): AP Started
[ 235][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 10 - AP_START
[ 242][V][WiFiGeneric.cpp:521] _arduino_event_cb(): Provisioning Start!
[ 249][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 35 - PROV_START

[ 26955][V][WiFiGeneric.cpp:407] _arduino_event_cb(): AP Station Connected: MAC: c6:0f:b1:7b:4e:c7, AID: 1
[ 26957][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 12 - AP_STACONNECTED

[ 27429][V][WiFiGeneric.cpp:421] _arduino_event_cb(): AP Station IP Assigned:192.168.4.2
[ 27430][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 14 - AP_STAIPASSIGNED

[ 89831][V][WiFiGeneric.cpp:383] _arduino_event_cb(): SCAN Done: ID: 129, Status: 0, Results: 40
[ 89832][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: 1 - SCAN_DONE

I dont understand what its going on but it is working..

[PilnyTomas]

Hello, I can confirm that the Arduino version is not working while the IDF does.
I will take a look into this and try to fix it.

[PilnyTomas]

Heh, the error might be funnier then I previously thaught - it is a case size problem :D

The IDF example is using upper case: const char *ssid_prefix = "PROV_"; line 210

While the Arduino is using lower case (only the first letter is upper case):

arduino-esp32/libraries/WiFiProv/examples/WiFiProv/WiFiProv.ino

Line 50 in 3ec5f4e

WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, "abcd1234", "Prov_123");

You can try those 2 things:

1. change the name in example to upper case: WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, "abcd1234", "PROV_123");
2. Change the expected prefix in the smartphone app to what is by default in the Arduino example: "Prov_"

I will change the example to match the default in the app, and add a few more things.

[PilnyTomas]

The PR is merged, so I'm closing this issue.