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MPLAB® Harmony v3 Peripheral Libraries on PIC32MX 470: Step 3

Last modified by Microchip on 2023/11/09 09:09

Configure Switch Button Pin with GPIO Interrupt Handler

In this step, the switch button will be configured as per below switch S1 design schematic of PIC32MX470 Curiosity Development Board.

S1 design schematic of PIC32MX470

In MPLAB® Code Configurator (MCC), select the Pin Settings tab and sort the entries by Ports names as shown below.

Pin Settings tab

Scroll down to the GPIO pin RD6 (Pin Number 54) in the Pin ID column and configure RD6 as an external interrupt pin for S1 switch functionality as shown below. Internal pull-up is enabled to avoid false edge detection as there is no external pull-up on the PIC32MX470 Curiosity Development Board.

Pin Settings tab

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Configure LED Pin

In this step, the user LED will be configured as shown below. LED0 design schematic of PIC32MX470 Curiosity Development Board.

LED0 design schematic of PIC32MX470 Curiosity Development Board

Select the MCC Pin Settings tab and then scroll down to the GPIO pin RE4 (Pin Number 64) in the Pin ID column and configure RE4 as an output pin for LED1 functionality as shown below.

Pin Settings tab

The LED1 on the PIC32MX470 Curiosity Development Board is active low. Configure the LED1 in default OFF state by configuring the latch value to logic "High".

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Rename the Default Main File

Under the Project Graph tab, click on System, and configure as below to give the name of your liking to the default template main file generated by MCC.

Project Graph tab

The name of the default main.c is changed to main_pic32mx470.c to indicate that the referred main.c is for the PIC32MX470 getting started training module.

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