Case 1 - one button mapped to four LEDs

Having Thread network configured and operational, you can start KNX IoT device configuration and testing. One device must be configured as the Actuator and one as the Sensor.

One button of KNX IoT Sensor nRF52840 DK device will control 4 LEDs built in to KNX IoT Actuator nRF52840 DK device.

1. Configure the Actuator device by adding entries to Actuator’s Group Object Table.

   uart:~$ knx got add 1 /p/1 22 [1]
   uart:~$ knx got add 2 /p/2 22 [1]
   uart:~$ knx got add 3 /p/3 22 [1]
   uart:~$ knx got add 4 /p/4 22 [1]
   

2. Set device installation identifier and device individual address for Actuator device.

   uart:~$ knx dev iid 1
   uart:~$ knx dev ia 1
   

3. Configure the Sensor device by adding entries to Sensor’s Group Object Table.

   uart:~$ knx got add 1 /p/1 22 [1]
   

4. Set device installation identifier and device individual address for Sensor device.

   uart:~$ knx dev iid 1
   uart:~$ knx dev ia 2
   

5. Devices are configured. Use sensor’s BUTTON1 to disable or enable all of the assigned actuator’s LEDs. Usage of the other buttons has no effect. The interconnections between buttons and LEDs are presented in the following table:

   Control button (Sensor)	Controlled LEDs (Actuator)
   BUTTON1	LED1, LED2, LED3, LED4