Digit Recognition AI/ML Application on SAM E51 IGAT Curiosity Evaluation Kit Using MPLAB® Harmony v3: Step 4

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Step 4.1: Configure Generic Display Module

1

Associate the Generic Display module to Integrated Touch Driver by right-clicking on the yellow diamond.

associate_generic_display.png

2

Select Generic Display in the Project Graph and verify the Generic Display on Configuration Options.

generic_display_config.png

Step 4.2: Configure External Display Controller Driver

1

Associate LE External Controller module to Generic Display by right-clicking on the yellow diamond.

associate_le_external_ctrl.png

If auto prompted to auto activate GFX Core LE, click Yes.

gfx_core_auto_activate.png
added_le_xtrnl_ctrl_nd_gfx_core.png

2

Select the LE External Controller in the Project Graph and configure the LE External Controller on Configuration Options.

le_xtrnl_ctrl_config.png

3

Select the GFX Core LE in the Project Graph and configure the GFX Core LE on Configuration Options.

gfx_core_le_config.png

Step 4.3: Configure Legato Graphics Library

1

Associate Legato Graphics Library module to LE External Controller by right-clicking on the yellow diamond.

associate_legato_graphic_lib.png
added_legato_graphic_lib.png

Legato Graphic Library will be configured in Legato composer in the further steps.

legato_graphic_lib_config.png

Step 4.4: Configure Parallel Display Interface

1

Associate Parallel Display Interface module to LE External Controller by right-clicking on the red diamond.

associate_parallel_display_interface.png
added_parallel_display_interface.png

2

Select the Parallel Display Interface in the Project Graph and configure the Parallel Display Interface on Configuration Options.

parallel_display_interface_config.png

3

From the Project Graph tab, select Plugins > DMA Configuration to launch the DMA Configuration window.

open_dma_configuration.png

A new window, DMA Settings, is opened in the project’s main window.

dma_window.png

4

Click on the DMA Settings tab. Configure DMA Channel 0 to transfer application buffer to the Parallel Display Interface. The DMA transfers 1 byte from the CCL output to Parallel Display Interface on each trigger.

Based on the trigger source, the DMA channel configuration is automatically set by Microchip Code Configurator (MCC).

  • Trigger Action: Action was taken by DMA on receiving a trigger
    • One beat transfer: Generally used during a memory-to-peripheral or peripheral-to-memory transfer
    • One block transfer: Generally used during memory-to-memory transfer on a software trigger
  • Source Address Mode, Destination Address Mode: Select whether to increment Source/Destination Address after every transfer. Automatically set by MCC based on the trigger type. For example:
    • If the trigger source is memory-to-peripheral, then the Source Address is incremented, and the Destination Address is fixed
    • If the trigger source is peripheral-to-memory, then the Source Address is fixed, and the Destination Address is incremented
  • Beat Size: Size of one beat. The default value is 8-bits. For example:
    • If the SPI peripheral is configured for 16-bit/32-bit mode, then the beat size must be set to 16-bits/32-bits respectively
display_interface_dma_setup.png

4

Also configure the DMA Channel 0 Event System Configuration and Priority Level 0 Arbitration Scheme by selecting System component in the Project Graph and expand the System > DMA (DMAC) > Use DMA Channel 0 > Event System Configuration.

dma_ch_0_evsys_config.png


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