AN4127

Getting started

Doc ID 023304 Rev 1

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Figure 31.

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6.2.4

GPIO and LED

The SPBT2632C2A.AT2 has several pins which can be configured as GPIOs (GPIO01 to

GPIO07).

If GPIO function is selected, GPIO direction (input/output) and GPIO level can be chosen by

means of the AT commands.

GPIO must be configured for output or input using the proper command:

–

AT+AB GPIOConfig [GPIO Pin] I for input

–

AT+AB GPIOConfig [GPIO Pin] O for output

Once configured, the GPIO port can be read or written with the commands:

–

AT+AB GPIOWrite [GPIO Pin] 1 write 1

–

AT+AB GPIOWrite [GPIO Pin] 0 write 0

–

AT+AB GPIORead [GPIO Pin] read

On the dongle there are 2 LEDs connected to GPIOs: LED2 connected to GPIO01 and

LED3 to GPIO004.

Each LED can be switched on/off by driving the corresponding GPIO with the proper AT

command.