// Access point config: for turning the ESP32 into an access point (the ESP32 can work in both modes at the same time)
// Note that if you connect a smartphone to this AP, it will detect it has no internet access, and then won't send requests to it (which will result in a timeout). A workaround is to turn off mobile data to force the phone use the access point (but then you effectively don't have internet on the phone). A more practical setup is to create an access point on your phone, and have the ESP32 connect to it (in "station" mode)
const char* wifi_AP_ssid = "REPLACE_WITH_YOUR_SSID"; // set to NULL to disable access point mode
const char* wifi_AP_password = "REPLACE_WITH_YOUR_PASSWORD"; // set to NULL for an open access point (not recommended)