5.6.1.4 Dimmable Light control and Monitoring using Combined Interface (with Touch Control)

WBZ351 Curiosity Board

Devices (Device): | PIC32CX5109BZ31048(MCU) on WBZ351 module |

Peripherals (Used, On-Board): |CVD Touch GREEN LED | User Button| UART-USB Converter|

Introduction

An overview of the demo is shown below.

GitHub Repository

Hardware Required

SDK Setup

Software

Programming the precompiled hex file or Application Example

To run the demo , we need 2 devices. One is the Combined Interface and the other is dimmable light.

1. One of the WBZ351Curiosity board is programmed with Combined Interface which can act as Zigbee Gateway/Coordinator. Program the CI pre-compiled hex image by following steps on one curiosity board.

2. Another WBZ351 Curiosity board is programmed with Dimmable Light application which can act as Zigbee Router. Follow the below step for programming Dimmable Light application on another curiosity board.

Programming the hex file using MPLABX IPE

1. Precompiled Hex file is located in "<Harmony Content Path>\wireless_apps_pic32cxbz3_wbz35\apps\zigbee\dim_light_touch" folder

2. Follow the steps mentioned here

Caution: Users should choose the correct Device and Tool information

Programming the Application using MPLABX IDE

1. Follow steps mentioned in of Running a Precompiled Example document

2. Open and program the Application Example "dim_light_touch.x" located in "<Harmony Content Path>\wireless_apps_pic32cxbz3_wbz35\apps\zigbee\dim_light_touch\firmware" using MPLABX IDE

<Harmony Content Path> how to find what is my Harmony Content Path

Demo Description

The demo applications demonstrates the Zigbee protocol functionality of PIC32CXBZ/WBZ family of devices and modules. It consists of a ZigBee 3.0 Coordinator and Router implemented as shown below :

Zigbee device commissioning:

• The Zigbee router i.e. Dimmable Lights can be commissioned and brought to the existing zigbee network formed by Zigbee coordinator i.e. Combined Interface or can create new zigbee Distributed network (if there is no nearby network).

Zigbee Light control:

• Dimmable light GREEN LED can be controlled from Zigbee Gateway of the same network.

• When the light status is changed the light change report will be sent to zigbee gateway through Zigbee communication.

Demo Steps:

The Zigbee light can be connected to any zigbee network.

Joining Light with WBZ351 Combined Interface (CI) Coordinator

1. Supply power to WBZ351 Curiosity Board consisting of Combined Interface application by connecting a USB cable. Power Supply (PS) Green LED will turn on when connect to PC.
   
2. The application activity is shown as "Console Log" through on board UART-USB converter

• Open Terminal(eg: Tera Term) with the setup as shown below to look for these logs

• On the PC side virtual COM port connection that corresponds to the board shall have following settings:

  BAUD RATE: 115200 (as configured in SERCOM configuration)
  PARITY: None
  DATA BITS: 8
  STOP BITS: 1
  FLOW CONTROL: None

Network Formation (Coordinator - (Combined Interface))

Commissioning (Router - Dimmable Light)

• Supply power to WBZ351 Curiosity Board programmed with "Dimmable Light"

  1. Connect the QT7 Xplained Pro Extention board on Curiosity board extention as shown.
     
  2. Supply power to by connecting a USB cable. Power Supply (PS) Green LED will turn on when connect to PC.

• Follow step 2 in "Hardware & Software Setup" for UART terminal Setup.

• Input command : resetToFN and look for the below logs for successful joining with CI.

• Success logs : When dimmable light successfully commissioned with Combined Interface below log will be seen.

  

Light Control

Attention:

GREEN LED is one of the LED in RGB LED. Since the RED and BLUE colour of RGB is not connected with WBZ351 module, only GREEN LED is used in this demo. So, look for "RGB LED" marking on curiosity board for GREEN LED also.

• The GREEN LED brightness can be controlled from Combined Interface through console commands.

• Brightness changed from Combined Interface, will be reflected in next received level control attribute report in combined Interface
• The network address of the light is needed to send light control commands to light.
• This network address can be got from Combined interface console log while commissioning was done. Refer to the above success log for light network address.

• Another way to get the network address from light is executing the below command in light side.

   Command: getNetworkAddress 
   Response: f088 

• The table below shows few commands for light control(on /off, brightness). Refer to doc Serial Console Commands to get to know the different parameters of the commands.

1. Important:

   If the QT7 XPRO board is not connected with WBZ351 curiosity board, by touching on curiosity board extention pins might cause the Touch detection. Hence Touch functionality is disabled by default.

   To activate touch functionality , enable ENABLE_TOUCH macro command in the following file dim_light_touch\firmware\src\app.h

   

   Note: Uncomment ENABLE_TOUCH macro if it is commented.
2. Button 2 marked on QT7 XPRO board can switch On/Off the GREEN LED. Touch and release the Button 2. See the GREEN LED is On. A LED near to Button 2 will also glow.
3. The Slider can help to increase/decrese the brightness of GREEN LED. The lowest position will bring the brightness Low, and highest slider position will bring the GREEN LED brighness to High. The brightness are in the scale of 0 to 255.
4. Slide on the Touch slider and observe the GREEN LED brightness changes. The 6 LED's adjacent to Slider will also show the brightness level.
5. Touch and release the Button 2 and observe that GREEN LED is Off. All the Touch LED's also will be Off. Changing the slider position will not change the brightness until the LED is On by Button 2.
   Note:

   The GREEN LED state and brightness change by Touch button will get reflected in light reports seen on Combined Interface.

1. On board button actions:

   • When the on board "User Button (SW3)" is pressed for more than 10sec, it can delete all the networking information and will bring the device to factory default state. This functionality is available in both combined interface and light devices.

2. Persistent Data Storage (PDS): The light status (On/Off) and brightness values are stored in non-volatile memory called PDS.

   • Power off/on of dimmable light, these values persist and LED will reflect accordingly. This PDS storage is tied to zigbee network.

   • The light On/Off status and light brightness is being stored in non-volatile memory in this case. So, power off/on, the LED will be updated with light on/off and brightness values retrieved from previous transaction

Creating Application Device Types From Scratch Using MCC

All the supported device types including this Dimmable light projects can be generated by following the steps in Generating project from MCC.