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Configure Keys

Supports configuring GPIO pins for keys through AT commands.
Currently, the GPIO pins corresponding to the three buttons in the kit are as follows:
```
Button A - GPIO 18
Button B - GPIO 19
Button C - GPIO 5
```

GPIO

Currently, there are a total of 8 configurable GPIO pins:
```
5, 18, 19, 21, 25, 33, 36, 39
```
Each key must correspond to a separate GPIO pin.

Configure talk key:

Example: Define talk key as GPIO 27
```
at+keys=talk,<GPIO> // at+keys=talk,27
```

Switch recording mode

Example: press the recording button to enter recording, release the button to end recording
```
at+command=record,press
```
Example: click the recording button to enter the recording, and it will automatically end after the recording is completed
```
at+command=record,click
```
Example: click the recording button to enter continuous conversation mode
```
at+command=record,continuous
```

Configure enter dialogue mode key:

Example: Define enter dialogue mode key as GPIO 29 and GPIO 30
```
at+keys=dialogue,<GPIO>;<GPIO> // at+keys=dialogue,29;30
```

Configure role:

If not configured, the default role ID is 1.

Example: Define GPIO 22 as the key for role 1

at+keys=role_idx,<index>,<GPIO> // at+keys=role_idx,1,22

Example: Remove key definition for role 1

at+keys=role_idx,<index>,<GPIO> // at+keys=role_idx,1,0

Configure switch role key:

Example: Configure GPIO 27 to switch to the previous role
```
at+keys=role_prev,<GPIO>  // at+keys=role_prev,27
```
Example: Configure GPIO 28 to switch to the next role
```
at+keys=role_next,<GPIO>  // at+keys=role_next,28
```

Specific Steps

Connect the interface expansion board to a PC using the provided Type C data cable.
Open the web tool and navigate to the logs.
Select the serial port for the kit and click "Connect."
Enter the AT command in the pop-up log box.

GPIO
Specific Steps