ESP32 Forum

Posted: **Thu Jan 14, 2021 2:03 pm**

Hey all,

for some reason the minimal wifi station example is working on an older dev board with an ESP32-WRO)M-32 is working. However on my custom PCB with ESP32-WROOM-32E it is not. It's exactly the same software I'm flashing. On both boards, I first erased the flash via `idf.py erase_flash`.

The dev board's HW:

DevKit 4 C clone
Powered through USB (Thinkpad docking station)

The custom PCB:

Powered through custom step down converter which can deliver up to 1A. Checked via scope: The Output voltage is less noisy compared to the DevKit.
The ESP module is placed on the top right corner of the PCB. There's no PCB under the antenna area.
Other functions I checked so far worked flawlessly. E.g. LED fading, TWAI, regular GPIO switching.

Attached you find the flashing- and message log of each variant. The problem seems to be with the auth step. Here's an excerpt of the non-working 32E log:

Code: Select all

I (677) wifi_init: WiFi IRAM OP enabled
I (677) wifi_init: WiFi RX IRAM OP enabled
I (787) phy: phy_version: 4500, 0cd6843, Sep 17 2020, 15:37:07, 0, 0
I (797) wifi:mode : sta (7c:9e:bd:d9:b6:50)
I (797) wifi station: wifi_init_sta finished.
I (1517) wifi:new:<6,0>, old:<1,0>, ap:<255,255>, sta:<6,0>, prof:1
I (3467) wifi:state: init -> auth (b0)
I (4467) wifi:state: auth -> init (200)
I (4467) wifi:new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
I (4467) wifi station: retry to connect to the AP
I (4467) wifi station: connect to the AP fail
I (6517) wifi station: retry to connect to the AP
I (6517) wifi station: connect to the AP fail
I (6637) wifi:new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
I (6637) wifi:state: init -> auth (b0)
I (7637) wifi:state: auth -> init (200)
I (7637) wifi:new:<6,0>, old:<6,0>, ap:<255,255>, sta:<6,0>, prof:1
I (7647) wifi station: retry to connect to the AP

Any Idea why on one board it's working whereas it's not on the other?

BR
Marcel

Edit: Corrected attached file and added more info

Posted: **Fri Jan 15, 2021 6:31 pm**

Any ideas? If not, I'll create a bugticket on github.

BR Marcel

Posted: **Fri Jan 15, 2021 6:54 pm**

Hi,

This looks like you are having an issue in the authentication process.

Code: Select all

wifi:state: auth -> init (200)

Have you tried to connect to a different WiFi router?

Posted: **Sat Jan 16, 2021 2:50 pm**

The exact same software flashed to the DevKitC module is able to connect to this router. I don't suspect the router being the problem. However, I tried to connect to an AP opened via my android phone. No success.

Posted: **Mon Jan 18, 2021 4:49 pm**

Hi,

Before creating a new issue on GitHub, you can help by giving your feedback on this issue: https://github.com/espressif/esp-idf/issues/5976

Posted: **Mon Jan 18, 2021 8:53 pm**

Hey ESP_Minatel, thanks for the hint about the issue. It looks similar but it's closed already and it didn't get solved.

I opened a ticket in the IDF repo on github: https://github.com/espressif/esp-idf/issues/6427

Posted: **Tue Jan 19, 2021 9:25 am**

I used the sample program esp32/getstarted/wifiap when im trying to connect to the esp32 wifi im getting the following problem'

Code: Select all

I (18662) wifi:station: 38:e6:0a:cd:99:22 join, AID=1, bgn, 20
I (22662) wifi:station: 38:e6:0a:cd:99:22 leave, AID = 1, bss_flags is 134242, bss:0x3ffba7fc

connecting and disconnecting immediately i gave user name as "esp32" and password as "12345678 " and channel 0 and max connections as 5
Help me to solve this ?

Thank you

Posted: **Tue Jan 19, 2021 9:50 am**

saikrishna wrote: ↑
Tue Jan 19, 2021 9:25 am
I used the sample program esp32/getstarted/wifiap when im trying to connect to the esp32 wifi im getting the following problem'
Code: Select all
I (18662) wifi:station: 38:e6:0a:cd:99:22 join, AID=1, bgn, 20
I (22662) wifi:station: 38:e6:0a:cd:99:22 leave, AID = 1, bss_flags is 134242, bss:0x3ffba7fc
connecting and disconnecting immediately i gave user name as "esp32" and password as "12345678 " and channel 0 and max connections as 5
Help me to solve this ?

Thank you

Hi,

You need to provide us more information about your issue to receive a proper help.

ESP-IDF version?

ESP32 Hardware (Dev board or custom)?

More debug log since ESP boot

Have you tried on different board?

Have you tried on different WiFi router?

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