B4R Question ESP32 strange behaviour? [solved]

[KMatle]

My new ESP32 dev. board with USB arrived today. It behaves strange:

- to connect to it, I have to press the "Boot" button (the ESP8266 just connected without pressing anything)
- only every 2nd start (power off -> power on OR EN-Key pressed) the app starts. Any ideas why that happens? Very strange.

 

[thetahsk]

My new ESP32 dev. board with USB arrived today. It behaves strange:

- to connect to it, I have to press the "Boot" button (the ESP8266 just connected without pressing anything)
- only every 2nd start (power off -> power on OR EN-Key pressed) the app starts. Any ideas why that happens? Very strange.

What ESP Board did you bought ?

 

[KMatle]

Espressif ESP32 WLAN Dev Kit Board Development Bluetooth Wifi v1 WROOM32 NodeMCU

Seems to be a known issue with floating pins. Will buy another one from another company.

 

[thetahsk]

Do you have more information. Some Photos and link where you bought it.

 

[KMatle]

Here's a thread about the issue: https://github.com/espressif/arduino-esp32/issues/1274

PIC:

As it seems 20-30% of all modules have this issue.

 

[KMatle]

Forget about the "does not start at reboot". It starts but every 2nd time WiFi doesn't connect at the first try which caused my code to exit.

Logs:

Hard resetting via RTS pin...
********************* Programm startet ****************
ets Jun  8 2016 00:22:57
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:10312
load:0x40080400,len:6460
entry 0x400806a4
*** B4R AppStart ***
Connecting to WiFi...
1
Failed to connect. -> First try
Connecting to WiFi... -> 2nd
2
Connected to wireless network.
My ip: 192.168.178.73

So I did a loop (max. 10 retries to connect) which works fine now (2nd try will work).

Code

Private Sub AppStart
    
    Serial1.Initialize(115200)
    
    Log("*** B4R AppStart ***")
    
    For i=1 To 10
        Log("Connecting to WiFi...")
        Log(i)
        If wifi.Connect2("SSID","PW") Then 'change to your network SSID (use Connect2 if a password is required).
            Log("Connected to wireless network.")
            Log("My ip: ", wifi.LocalIp)
            pin16.Initialize(16, pin16.MODE_OUTPUT)
            pin16.DigitalWrite(True)
            pin2.Initialize(2, pin16.MODE_OUTPUT)
            pin2.DigitalWrite(True)
            Exit 'leave the FOR loop
        Else
            Log("Failed to connect.") 'try again after
        End If
    Next
   
    server.Initialize(51042, "server_NewConnection")
    server.Listen
    
    
End Sub