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Table 3.1. LED connectivity.
All the pins must be defined as digital output (their corresponding TRIS bit must be set to 0):
TRISAbits.TRISA<0-7> = 0; // LED<0-7> configured as output
3.2 Functionality
To turn an LED on or off, turn the corresponding digital output pin high or low by writing 1 or 0 to the
corresponding LATA register bit.
LATAbits.LATA<0-7> = 1; // turn led on
or
LATAbits.LATA<0-7> = 0; // turn led off
Library functions for using the LEDs are contained in the Basys MX3 library pack, LED library; however, the user can
easily use the LEDs without the LED library, as presented above.
4 User Switches
Eight switches are provided, labeled SW0 – SW7 on the board and in the schematic, attached to eight digital I/O
pins of the PIC32. Reading the switches is done by basic access to an input I/O pin. Read more details in Digital
Inputs and Outputs section.
Figure 4.1 shows the way the switches are electrically connected on the Basys MX3.
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