I need the external antenna to function so I can install my sensor further from the WIFI. I am trying to create a program to run on my photon, and the line of code I am using is STARTUP(WiFi.selectAntenna(ANT_EXTERNAL));
I used the code before with no issues, but now it keeps returning an error that says “undefined reference to “wlan_select_antenna””. It doesn’t return any errors if I take this line of code out.
Any recommendations would be greatly appreciated.