Lab 1: Create the Application

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Step 5: With MHC, Configure GPIO Pins and Interrupts

1

Open the Pin Configuration pane by navigating to MHC > Tools > Pin Configuration.

Open the Pin Settings tab and look for pins #B37 to #B39.

Add a custom name and apply the following configuration for each pin:

  • B37: LED_RED
  • B38: LED_GREEN
  • B39: SWITCH1

Make sure to enable the change notification item for pin #B39 to enable the interrupt on this pin.

Set B39/RA10 as a digital input.

lab1_step5_01.png
Figure 1: Configure GPIO pins

2

Configure the Enhanced Vectored Interrupt Controller EVIC under MHC > Tools > EVIC Configuration.

lab1_step5_02a.png
Figure 2: Open EVIC Configuration

Enable interrupts for Vector Numbers:

  • 34 - USB (USB_1)
  • 41 - I2C1_BUS
  • 43 - I2C1_MASTER
  • 44 - CHANGE_NOTICE_A
lab1_step5_02b.png
Figure 3: Configure EVIC


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