Digilent Basys MX3, Справочное руководство

Страница: 14 / 52

7/30/2019 Basys MX3 Reference Manual [Reference.Digilentinc]
https://reference.digilentinc.com/reference/microprocessor/basys-mx3/reference-manual?_ga=2.68739409.1349070004.1564406803-1961480359.… 14/52
Label Schematic Name PIC32 Pin Description
LD2 LED2 SCL2/RA2 Led 2
LD3 LED3 SDA2/RA3 Led 3
LD4 LED4 TDI/CTED9/RA4 Led 4
LD5 LED5 TDO/RA5 Led 5
LD6 LED6 TRCLK/RA6 Led 6
LD7 LED7 TRD3/CTED8/RA7 Led 7
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
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.
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.
3.2. Functionality
4. User Switches