RemoteSign: {DR?} command (Request Digital Read)

Request the binary (0/1) value of a pin (GPIO)

Syntax

{DR?} pin

pin - the GPIO (or pin name) of the pin to be read

The value of the pin will be returned by a {DR} command. The pin in the return command will be the same as supplied on the {DR?} command. i.e. if you send a GPIO number you will get that number back. If you send a valid pin name you will get that back.

For example if you send:

{DR?} D5

the reply will be something like:

{DR}D5 ␑ 0

Note the ESP8266/Wemos D1 supports the following pins:

GPIO 0 (D3)
GPIO 1 (D10/TX)
GPIO 2 (D4)
GPIO 3 (D9/RX)
GPIO 4 (D2/SDA)
GPIO 5 (D1/SDL)
GPIO 12 (D6)
GPIO 13 (D7)
GPIO 14 (D5)
GPIO 15 (D8)
GPIO 16 (D0)