User Switches - Digilent Basys MX3 Reference Manual

7/30/2019
Label Schematic Name
LD2 LED2
LD3 LED3
LD4 LED4
LD5 LED5
LD6 LED6
LD7 LED7
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
In order 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 IO pins of the PIC32. Reading
the switches is done by basic access to an input IO pin. Read more details in Digital Inputs and Outputs chapter.
Figure 4.1 shows the way the switches are electrically connected on the Basys MX3.
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Basys MX3 Reference Manual [Reference.Digilentinc]
PIC32 Pin
SCL2/RA2
SDA2/RA3
TDI/CTED9/RA4
TDO/RA5
TRCLK/RA6
TRD3/CTED8/RA7
Description
Led 2
Led 3
Led 4
Led 5
Led 6
Led 7
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