In common configurations (including ESP-WROOM32), GPIO9 is connected to the external SPI flash of the ESP32. So it can't easily be used as a general purpose I/O pin. GPIOs 6, 7, 8, 9, 10, 11 are used this way on ESP-WROOM32. I thought this was mentioned in the ESP-WROOM32 datasheet, but it seems to...

Dear developers, I'm not sure here is the proper place to post this kind of information, but it's quite urgent that we want to find someone who familiar with ESP32 SDK. Our company situated in SZ, and based on HK, and currently developing an IoT device related to education and cognition development....

Dears, I'm trying to use BluFi to implement the WiFi connection, which is a great way to do it. However, when Bluetooth and WiFi coexist, it takes too much resource and the WiFi somehow keep disconnect after few seconds. So I want to deinitialize the BluFi after connecting the WiFi successfully. I s...