My first question is - is there a list of AT commands for each AT version? And can I assume that my 8266 module wouldn't be "missing" any commands?
My second question - what are the AT commands (assuming version 22.214.171.124 has them) to set the various parameters and operating modes of the AT pins? I'm having a hard time finding example AT command sequence to get, say, IO pin 0 to go high or low on command.
I've seen mention of AT+SYSGPIOREAD (with no other parameters or variables?) - my module just gives an error when I give it that command.
Not related to IO functions, but when I issue this command: AT+SYSRAM? I also get an ERROR. It's frustrating to see documented AT commands giving ERROR like this.