ESP32-C2 Wifi not working on module (storage driver issue)

[bruno192]

Hi,

I'm using a brand new ESP32-C2 module (ESP8684-MINI-1-H2), bought from mouser.com, on a custom PCB.
Programming it using vscode over JTAG works fine with a blinking and serial print example. However when I try to use it as a Wi-Fi client I get the following errors:

[ 2289][E][WiFiGeneric.cpp:255] wifiLowLevelInit(): esp_wifi_init 4353
[ 2296][E][STA.cpp:298] begin(): STA enable failed!

4353 error code is: ESP_ERR_NVS_NOT_INITIALIZED (0x1101): The storage driver is not initialized

I've tried to run

Code: Select all

esp_err_t ret = nvs_flash_init();

Which gives error 24579 (0x6003), some kind of flash error:

Code: Select all

#define ESP_ERR_FLASH_BASE          0x6000  /*!< Starting number of flash error codes */

I've tried on an identical second chip, same problem.

If I run the exact same code on ESP8684-DevKitM-1-H4 (uses ESP8684-MINI-1) development board then there are no issues getting Wi-Fi to work.

Any idea how to resolve this issue?

[lbernstone]

AFAIK the C2 is not supported on arduino-esp32. You would need to compile static libraries.

[bruno192]

I've been using
platform = https://github.com/Jason2866/platform-e ... duino/IDF5

Which should support c2. But the strange thing is thay WiFi works on the dev. kit ESP8684-DevKitM-1-H4 (which uses C2), but not on the seperate C2 module on the custom PCB.

I've tried to use static libraries, using the station_example (esp\v5.2.1\esp-idf\examples\wifi\getting_started\station), but to no avail. I can't get it to work on either the dev board nor the c2 module. I did try on an old wroom-32 dev board, and there it works.

I'm considering to just desolder the c2 from the dev board to my PCB, or replace the c2 with another variant.

[lbernstone]

Ah, I was confused since you are asking this question in a forum titled "ESP32 Arduino"
The flash is not getting initialized for some reason. Configure your flash to use lowest common denominator settings- 2M flash, DIO mode, 40MHz. Make sure your partition table only goes to 2M.
Does esptool give you accurate information if you run esptool.py flash_info?

[bruno192]

I manged to get it to work using the static libraries. Using idf.py menuconfig XTAL had to change from 40Mhz to 26Mhz. I'm guessing it's the same when using arduino framework.