Quickstart Board Support Application - mchpgfx/legato.docs GitHub Wiki

Microchip Technology Quickstart Board Support Application

A MPLAB® Harmony Graphics Suite board support application is a application or project that contains software that is configured to run on a specific hardware graphics platform. Every graphics hardware platform has a display. The software established using MPLAB® Harmony Configurator.

What is board support?

For Harmony graphics, board support is a combination of the required hardware-specifc macros, middleware, drivers, libraries and pin configuration sufficient enough to render graphics onto the display.

For applications running on Microchip supported graphics development boards, Board Support Packages (BSPs) and Templates components are used to automatically establish a board support. These components are designed requiring minimal user input to configure the project specific to the supported graphics development board schematic.

The schematic used to create the BSP and Template for the SAM E70 Xplained Ultra Evaluation kit is found in the SAM E70 Xplained Ultra User's Guide.

When is a board support needed?

A board support is needed after creating a new or modifying an existing hardware design. Our developers create a BSP and graphics template for any new graphics development kit or display. Whether you're creating or modifying a board you will need to use MHC along with a schematic to establish the support and generate the appropriate code.

What if I am using my custom board?

If you are using a non-supported board (your custom board), you will need to create your board support manually using your schematic. Schematics are the key to designing, building, and troubleshooting your graphics board support application. Understanding how to read and follow schematics is required when creating your board support.

NOTE: Please reference a hardware platform in Build New Application to understand how Microchip applications establishes a board support without using a BSP or graphics template.

Requirements

Before you begin you must have the following tools:

Tutorial 1: Automatically Create a Board Support Application Using Harmony BSP and Graphics Templates

Step 1: Create a new MPLAB® Harmony v3 project

  1. Select File > New Project from the main IDE menu.

  2. In the Categories pane of the New Project dialog, select Microchip Embedded. In the Projects pane, select 32-bit MPLAB® Harmony 3 Project, then click Next.

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NOTE: If 32-Bit MPLAB® Harmony 3 Project selection is not displayed, Download MPLAB® Harmony Framework.

  1. In the Framework Path edit box, browse to the folder you downloaded the framework to. If you haven't done this, or want to download it to a different folder, click the Launch Framework Downloader button, then click Next.

NOTE: For more information on the framework downloader, see the, Download MPLAB® Harmony Framework section of the "MPLAB® Harmony Configurator Overview" page.

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  1. In the Project Settings window, apply the following settings:

    • Location: Indicates the path to the root folder of the new project. All project files will be placed inside this folder. The project location can be any valid path, for example: C:\microchip\harmony\v3.
    • Folder: Indicates the name of the MPLABX .X folder. Enter “same70” to create a same70.X folder.
    • Name: Enter the project’s logical name as “my_board”. This is the name that will be shown from within the MPLAB® X IDE.
    • Click Next to proceed to Configuration Settings.

NOTE: Folder must be a valid directory name for your operating system. The Path box is read-only. It will update as you make changes to the other entries.

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  1. Follow the steps below to set the project’s Configuration Settings.

    • Name: Enter the configuration name as “same70”.
    • Target Device: Select “ATSAME70Q21B” as the target device.
    • Click Finish to launch the MHC.

NOTE: You can select the Device Family or enter a partial device name to filter the list in Target Device in order to make it easier to locate the desired device.

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NOTE: The New Project Wizard opens a Configuration Database Setup window to allow you to review the packages that will be used by the current project.

  1. While the MHC tool launches, it will ask for the packages to be loaded. In the Load checkboxes list, select the gfx, core, and bsp packages and unselect all other packages.

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Click Launch to launch the MHC Configurator tool with the selected packages.

  • Launching MPLAB® Harmony Configurator. The following message will be displayed while the project is loaded into MPLAB® X.

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  1. The MHC plugin’s main window for the project will be displayed. This is the initial project graph.

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  1. Before proceeding, set up the compiler toolchain. Click on the Projects tab on the top left pane. Right click on the project name my_board and go to Properties.

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Make sure that XC32 (v2.20) is selected as the Compiler Toolchain for XC32. Click on Apply and then click on OK.

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Step 2: Verify Clock Settings

  1. Launch Clock Diagram by going to MHC tab in MPLABX IDE and then select Tools > Clock Configuration.

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A new tab, Clock Diagram, is opened in the project’s main window.

  1. Click on the Clock Diagram tab, scroll to the right and verify that the Processor Clock (HCLK) and Master Clock (MCK) is set to 300 MHz and 150 MHz, respectively.

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Step 2: Create using MHC Board Support Packages (BSPs) and Graphics Templates

Automatic PIN configuration

A Board Support Package Component automatically adds to the Pin Settings table:

Pin Name Function Direction Latch Description
PA11 Switch SWITCH_AL Out Low From the schematic pin PA11 is mapped to SW1. Latch is active low
PA5 LED1 LED_AH/GPIO Out Low From the schematic pin PA5 is mapped to led1. Latch is active low
Pb8 LED2 LED_AH/GPIO Out Low From the schematic pin PA5 is mapped to led1. Latch is active low

NOTE: When the project is generated, MHC will add bsp.h and bsp.c to the project. The add LED and SWITCH macros as well as BSP_Initialize() API. When called, BSP_Initialize() switch off LEDs.

  1. Under the bottom left Available Components tab, expand Board Support Packages. Double click or drag and drop SAM E70 Xplained Ultra BSP to add the board support component the SAM E70 development kit to the project graph.

Step 4: Graphics Templates Board Support

A Graphics Template Component automatically adds subtending graphics components specific to a display module to the project graph. Just like the SAM E70 Xplainded Ultra BSP, the activities can be performed automatically or manually. The display module we will use Aria Graphics w/PDA TM4301B.

Automatic Component and Pin configuration

Under the bottom left tab, Available Components, expand Graphics. Double click or drag and drop Aria Graphics w/PDS TM4301B Display to add the Harmony Core Service to the project graph. When prompted to activate these components, click Yes. When prompted to activate FreeRTOS, click No. When prompted to automatically make these connections, click Yes. When prompted to deactivate these components, click Yes. When prompted to activate these components, click Yes.

Pin Name Function Direction Latch Description
PA3 TWIHS0_TWD0 TWIHS0_TWD0 n/a n/a From the schematic pin PA3 touch controller I2C.
PA4 TWIHS0_TWCK0 TWIHS0_TWCK0 n/a n/a From the schematic pin PA4 touch controller I2C.
PC0 EBI_D0 EBI_D0 n/a n/a From the schematic pin PC0 is mapped to display rgb pin 0.
PA16 EBI_D15 EBI_D15 n/a n/a From the schematic pin PA16is mapped to display rgb pin 15.
PC8 EBI_NWR0/NWE EBI_NWR0/NWE n/a n/a From the schematic pin PC8 is mapped to display pixel clock.
PC11 GFX_DISP_INTF_PIN_DE GPIO n/a n/a From the schematic pin PC11 is mapped to display data enable.
PC13 GFX_DISP_INTF_PIN_RESET GPIO n/a n/a From the schematic pin PC13 is mapped to display data enable.
PC30 GFX_DISP_INTF_PIN_HSYNC GPIO Out High From the schematic pin PC13 is mapped to display data enable.
PC19 GFX_DISP_INTF_PIN_VSYNC GPIO Out High From the schematic pin PC13 is mapped to display data enable.
PD28 GFX_DISP_INTF_PIN_VSYNC GPIO In n/a From the schematic pin PD28 is mapped to touch controller interrupt
Step 3: Generate Code

  1. When pin configuration is done, before generating code, click Save MHC State as shown below.

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  1. Save the configuration in its default location when prompted.

  2. Click on the Code Generate button as shown below to start generating code.

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  1. Click on the Generate button in the Generate Project window, keeping the default settings. If prompted for saving the configuration, click Save.

  2. As the code is generated, the MPLAB® Harmony Configurator (MHC) displays the progress as shown below.

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  1. Examine the generated code .

The MHC will include all the MPLAB® Harmony library files and generate the code based on the MHC selections. The generated code would add files and folders to your Harmony project.

  1. Navigate to the Projects tab to view the project tree structure.

  2. Build the code by clicking on the Clean and Build icon Microchip Technology and verify that the project builds successfully. At this point, you are ready to start implementing your application code.

Tutorial 2: Manually Create a Board Support Application

Step 1: Create a new MPLAB® Harmony v3 project

  1. Select File > New Project from the main IDE menu.

  2. In the Categories pane of the New Project dialog, select Microchip Embedded. In the Projects pane, select 32-bit MPLAB® Harmony 3 Project, then click Next.

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NOTE: If 32-Bit MPLAB® Harmony 3 Project selection is not displayed, Download MPLAB® Harmony Framework.

  1. In the Framework Path edit box, browse to the folder you downloaded the framework to. If you haven't done this, or want to download it to a different folder, click the Launch Framework Downloader button, then click Next.

NOTE: For more information on the framework downloader, see the, Download MPLAB® Harmony Framework section of the "MPLAB® Harmony Configurator Overview" page.

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  1. In the Project Settings window, apply the following settings:

    • Location: Indicates the path to the root folder of the new project. All project files will be placed inside this folder. The project location can be any valid path, for example: C:\microchip\harmony\v3.
    • Folder: Indicates the name of the MPLABX .X folder. Enter “same70” to create a same70.X folder.
    • Name: Enter the project’s logical name as “my_board”. This is the name that will be shown from within the MPLAB® X IDE.
    • Click Next to proceed to Configuration Settings.

NOTE: Folder must be a valid directory name for your operating system. The Path box is read-only. It will update as you make changes to the other entries.

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  1. Follow the steps below to set the project’s Configuration Settings.

    • Name: Enter the configuration name as “same70”.
    • Target Device: Select “ATSAME70Q21B” as the target device.
    • Click Finish to launch the MHC.

NOTE: You can select the Device Family or enter a partial device name to filter the list in Target Device in order to make it easier to locate the desired device.

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NOTE: The New Project Wizard opens a Configuration Database Setup window to allow you to review the packages that will be used by the current project.

  1. While the MHC tool launches, it will ask for the packages to be loaded. In the Load checkboxes list, select the gfx, core, and bsp packages and unselect all other packages.

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Click Launch to launch the MHC Configurator tool with the selected packages.

  • Launching MPLAB® Harmony Configurator. The following message will be displayed while the project is loaded into MPLAB® X.

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  1. The MHC plugin’s main window for the project will be displayed. This is the initial project graph.

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  1. Before proceeding, set up the compiler toolchain. Click on the Projects tab on the top left pane. Right click on the project name my_board and go to Properties.

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Make sure that XC32 (v2.20) is selected as the Compiler Toolchain for XC32. Click on Apply and then click on OK.

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Step 2: Verify Clock Settings

  1. Launch Clock Diagram by going to MHC tab in MPLABX IDE and then select Tools > Clock Configuration.

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A new tab, Clock Diagram, is opened in the project’s main window.

  1. Click on the Clock Diagram tab, scroll to the right and verify that the Processor Clock (HCLK) and Master Clock (MCK) is set to 300 MHz and 150 MHz, respectively.

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Step 2: Create without MHC Board Support Packages (BSPs) and Graphics Templates

  1. Configure SWITCH Button.

In MPLAB® Harmony Configurator (MHC), select the Pin Settings tab and then scroll down to 64 in the Pin Number column and configure the PORT pin PA11 as a Parallel Input/Output (PIO) interrupt pin for switch functionality as shown below. The internal pull-up is enabled to avoid false edge detection as there is no external pull-up on the SAM E70 Xplained Ultra Evaluation Kit.

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  1. Configure LED PIN

Select the MHC Pin Settings tab and then scroll down to 73 in the Pin Number column. Configure the PORT pin PA5 as an output pin for LED functionality as shown below.

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NOTE: The LED on the SAM E70 Xplained Pro board is active low. Configure the LED in default OFF state by configuring the latch value to logic "High".

Configure Software

  1. This is a Harmony based application, therefore, you will need to use the Harmony Core Service Component.

Under the bottom left tab, Available Components, expand Harmony. Double click or drag and drop Core to add the Harmony Core Service to the project graph. When prompted to activate FreeRTOS, click No.

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  1. You will also need the Time System Service.

NOTE: Harmony components lists Current Consumers and Available Consumers when a right click occurs on the circle icons.

  • On the Harmony Core Service component, right click the Core Service icon on Harmony Core Service component, select Available Consumers, then select TIME.

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  • On the Time System Service component, right click the TMR icon, select CORE_TIMER(core_timer).

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Because this is a GFX enabled application, you will need to select a graphics library. For this tutorial, we will use Aria.

  1. Under the bottom left tab, Available Components, expand Graphics>Middleware. Double click or drag and drop Aria to add the Aria graphics library to the project graph.

  2. On the Aria component, right click the GFX HAL, select Satisfiers, and select GFX Core.

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  1. On the GFX Core component, right click the Display Driver icon, select Satisfiers, and select LCC.

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  1. On the LCC component, right click SMC_CS diamond icon, select Satisfiers, and select SMC.

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  1. On the GFX Core component, right click Graphics Display diamond icon, select Satisfiers, and select PDA TM4301B (gfx_disp_pdatm4301b_480x272).

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  1. On the PDA TM4301B component, right click Touch Panel diamond icon, select Consumers, and select MaXTouch Controller (gfx_maxtouch_controller).

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  1. On the MaXTouch Controller component, right click DRV_I2C diamond icon, select Satisfiers, and select I2C (drv_i2c).

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  1. On the MaXTouch Controller component, right click Input System Service circle icon, select Available Satisfiers, and select Input System Service (sys_input).

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  1. On the I2C Driver component, right click Input I2C diamond icon, select Satisfiers, and select TWIHS0.

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On completion, your Project Graph window should look similar to the following image:

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If the display needs to be configured, then you will need to launch Display Manager. For this tutorial, Display Managing is not required. See Getting started with Display Manager for more information.

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Configure Hardware

In this step, you will need to connect the SAME70 to the external touch controller and display modules.

If you are using the SAME70 Xplained Pro Evaluation Kit, please reference the Curiosity SAME70 Xplained Pro Evaluation Kit schematic obtained from the SAM E70 Xplained Ultra User's Guide.

NOTE: If you are using a schematic for your custom board, map the required graphics pins to your board.

NOTE: the drv_maxtouch and drv_gfx_lcc drivers require specific names for its pins. If you do not have the correct pin names a compiler output will display an error along with the expected name.

The pin mapping table below is made available for convenience.

Required Pin Settings

Ball/Pin Number Pin ID Name Function Direction Latch
91 PA3 TWIHS0_TWD0 TWIHS0_TWD0
77 PA4 TWIHS0_TWCK0 TWIHS0_TWCK0
79 PB6 ICE_TMS/SWDIO TWIHS0_TWD0
89 PB7 ICE_TCK/SWDCLK TWIHS0_TWCK0
49 PA15 EBI_D14 EBI_D14
45 PA16 EBI_D15 EBI_D15
49 PA15 EBI_D14 EBI_D14
11 PC0 EBI_D0 EBI_D0
38 PC1 EBI_D1 EBI_D1
39 PC2 EBI_D2 EBI_D2
40 PC3 EBI_D3 EBI_D3
41 PC4 EBI_D4 EBI_D4
58 PC5 EBI_D5 EBI_D5
54 PC6 EBI_D6 EBI_D6
48 PC7 EBI_D7 EBI_D7
4 PE0 EBI_D8 EBI_D8
6 PE1 EBI_D9 EBI_D9
7 PE2 EBI_D10 EBI_D10
10 PE3 EBI_D11 EBI_D11
27 PE4 EBI_D12 EBI_D12
28 PE5 EBI_D13 EBI_D13
82 PC8 EBI_NWR0/NWE EBI_NWR0/NWE
86 PC9 GFX_DISP_INTF_PIN_BACKLIGHT GPIO Out High
94 PC30 GFX_DISP_INTF_PIN_DE GPIO Out High
19 PC11 GFX_DISP_INTF_PIN_RESET GPIO Out High
15 PC30 GFX_DISP_INTF_PIN_HSYNC GPIO Out High
67 PD19 GFX_DISP_INTF_PIN_VSYNC GPIO Out High
71 PD28 BSP_MAXTOUCH_CHG GPIO In
  1. Open the Pin Configuration tabs by clicking MHC > Tools > Pin Configuration.

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  1. Select the MHC Pin Settings tab and sort the entries by Port names as shown below.

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  1. Use the table above to establish your Pin Settings.
Step 3: Generate Code

  1. When pin configuration is done, before generating code, click Save MHC State as shown below.

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  1. Save the configuration in its default location when prompted.

  2. Click on the Code Generate button as shown below to start generating code.

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  1. Click on the Generate button in the Generate Project window, keeping the default settings. If prompted for saving the configuration, click Save.

  2. As the code is generated, the MPLAB® Harmony Configurator (MHC) displays the progress as shown below.

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  1. Examine the generated code .

The MHC will include all the MPLAB® Harmony library files and generate the code based on the MHC selections. The generated code would add files and folders to your Harmony project.

  1. Navigate to the Projects tab to view the project tree structure.

  2. Build the code by clicking on the Clean and Build icon Microchip Technology and verify that the project builds successfully. At this point, you are ready to start implementing your application code.


Next Steps


If you are new to MPLAB® Harmony, you should probably start with these tutorials:


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