legato_quickstart_mzda_cu_tm4301b.X
Defining the Architecture
This application demonstrates basic multi-layer, WQVGA graphics on the PIC32MZ MCU.
User touch input on the display panel is received thru the PCAP capacitive touch controller, which sends a notification to the Touch Input Driver. The Touch Input Driver reads the touch information over I2C and sends the touch event to the Graphics Library thru the Input System Service.
Demonstration Features
- Legato Graphics Library and Graphics Canvas
- Reference application for the PIC32MZ DAR/DAS devices with Internal DDR
- 24-bit color, multi-layer, WQVGA (480x272) screen design
- Graphics Acceleration using integrated display controller (GLCD)
Creating the Project Graph
The Project Graph diagram shows the Harmony components that are included in this application. Lines between components are drawn to satisfy components that depend on a capability that another component provides.
Adding the PIC32MZ DA Curiosity BSP and Legato Graphics w/ PDA TM4301b Display Graphics Template component into the project graph will automatically add the components needed for a graphics project and resolve their dependencies. It will also configure the pins needed to drive the external peripherals like the display and the touch controller.
Building the Application
The parent directory for this application is gfx/apps/legato_quickstart. To build this application, use MPLAB X IDE to open the gfx/apps/legato_quickstart/firmware/legato_qs_mzda_cu_tm4301b.X project file.
The following table lists configuration properties:
| Project Name | BSP Used | Graphics Template Used | Description |
|---|---|---|---|
| legato_qs_mzda_cu_tm4301b.X | PIC32MZ DA Curiosity | Legato Graphics w/ PDA TM4301b Display | PIC32MZ DA Curiosity with RGBA8888 GFX Interface and 4.3” WQVGA PCAP Touch display |
**_NOTE:_** This application may contain custom code that is marked by the comments // START OF CUSTOM CODE … and // END OF CUSTOM CODE. When using the MPLAB Harmony Configurator to regenerate the application code, use the “ALL” merging strategy and do not remove or replace the custom code.
Configuring the Hardware
The final setup should be:
Configure the hardware as follows:
- Attach the 24-bit passthrough graphics interface card to the J601 connector on the PIC32MZ DA Curiosity board.
- Connect the ribbon cable from the WQVGA display to the J2 connector on the 24-bit passthrough graphics interface card.
- Connect a USB cable from the host computer to the DEBUG USB port on the PIC32MZ DA Curiosity board. This USB connection is used for power, code download and debugging.
The final hardware setup should be:
Running the Demonstration
When power-on is successful, the demonstration will display a similar menu to that shown in the following figure (different configurations may have slight variation in the screen aspect ratio):
