Datasheet

AT+HWGPIOMODE

This will set the mode for the specified GPIO pin (input, output, etc.).

Codebase Revision: 0.3.0

Parameters: This command one or two values (comma-separated in the case of two

parameters being used):

The pin number

The new GPIO mode, where:

0 = Input

1 = Output

2 = Input with pullup enabled

3 = Input with pulldown enabled

Output: If a single parameters is passed (the GPIO pin number) the current pin mode will be

returned.

# Set pin 14 HIGH

AT+HWGPIO=14,1

# Set pin 14 LOW

AT+HWGPIO=14,0

# Read the current state of pin 14

AT+HWGPIO=14

# Try to update a pin that is not set as an output

AT+HWGPIOMODE=14,0

AT+HWGPIO=14,1

ERROR

Some pins are reserved for specific functions on Bluefruit modules and can not be

used as GPIO. If you try to make use of a reserved pin number an 'ERROR'

response will be generated.