How to create a periodic event and use LCD on BRD4001A Wireless Starter Kit Mainboards based on Silicon Labs Simplicity Studio 4/EmberZNet 6.1.0 Z3LightSoC example

The following steps show you how to create a periodic event and use LCD on BRD4001A Wireless Starter Kit Mainboards based on Silicon Labs Simplicity Studio 4/EmberZNet  6.1.0 Z3LightSoC example.

To enble LCD on BRD4001A Wireless Starter Kit Mainboards:

1.

 
    A. Open efr32mg1p232f256gm48.hwconf
    B. Select "DefaultMode Peripherals" tab
    C. Check "SPI Display"

2.

 

     A. Open Z3LightSoc.isc
     B. Go to "Plugin" tab
     C. Enable "Graphics Library"
     D. Generate code

To create a periodic event

1.

     A. Open Z3LightSoc.isc
     B. Go to "Includes" tab
     C. Press New button of "Custom Events"
     D. Naming your own periodic event to periodicEventControl/periodicEventFunction
     E. Generate Code

2. Open Z3LightSoc_callbacks.c and add the following codes:

     A. Add "#include "glib.h"", "EmberEventControl periodicEventControl;", and "extern GLIB_Context_t glibContext;"
     B. Add "GRAPHICS_Init();" in emberAfMainInitCallback() to initialize LCD graphics.
     C. Call "emberEventControlSetDelayMS(periodicEventControl, 1000);" in emberAfMainInitCallback() to initialize first call to periodicEventControl.
     D. Add the following periodicEventFunction to be called every seconds and redraw "EFR32 Hello App!" message from top to bottom on LCD.
            uint8_t y=5;
            void periodicEventFunction(void)
            {
              emberEventControlSetInactive(periodicEventControl);
              GLIB_clear(&glibContext);
              GLIB_drawString(&glibContext, "EFR32 Hello App!", 17, 5, y, 0);
              y+=5;
              if(y>120)
                y=5;
              DMD_updateDisplay();
              emberEventControlSetDelayMS(periodicEventControl, 1000);
            }

Build and download FW to EFR32 and you can see "EFR32 Hello App!" move from top to bottom of LCD on BRD4001A Wireless Starter Kit Mainboards.