Digilent Basys MX3 Reference Manual page 34

Basys MX3™ Board Reference Manual
Name PIC32 pin
MODE RPF1/PMD10/RF1
AIN1 PGED3/AN3/C2INA/RPB3/RB3
AIN2 RPE8/RE8
BIN1 RPE9/RE9
BIN2 AN5/C1INA/RPB5/RB5
The command pins (MODE, AIN1, AIN2, BIN1, BIN2) must be defined as digital output and the analog functionality
for AIN1 and BIN2 disabled:
TRISFbits.TRISF1 = 0; //set RF1 (MODE) to be an output
TRISBbits.TRISB3 = 0; //set RB3 (AIN1) to be an output
ANSELBbits.ANSB3 = 0; //disable analog functionality for RB3 (AIN1)
TRISEbits.TRISE8 = 0; //set RE8 (AIN2) to be an output
TRISEbits.TRISE9 = 0; //set RE9 (BIN1) to be an output
TRISBbits.TRISB5 = 0; //set RB5 (BIN2) to be an output
ANSELBbits.ANSB5 = 0; //disable analog functionality for RB5 (BIN2)
The following signals are routed to the MOTOR_OUT board to wire connector:
Connector Label Motor Driver pin
VEXT -
GND -
A1 AOUT1
A2 AOUT2
B1 BOUT1
B2 AOUT2
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Motor Driver pin
MODE
AIN1/APHASE
AIN2/AENBL
BIN1/BPHASE
BIN2/BENBL
Table 14.2. Motor connectivity.
Description
The external power that can be applied to the motors, selected using
MOTOR PWR jumper block (0 to 11 Volts)
The GND for the external power applied on VEXT
IN/IN mode: Signal 1 of the stepper motor
PH/EN mode: Signal 1 of the DC motor A
IN/IN mode: Signal 2 of the stepper motor
PH/EN mode: Signal 2 of the DC motor A
IN/IN mode: Signal 3 of the stepper motor
PH/EN mode: Signal 1 of the DC motor B
IN/IN mode: Signal 4 of the stepper motor
PH/EN mode: Signal 2 of the DC motor B
Table 14.3. Motor connector pinout.
Description
logic low selects IN/IN mode
logic high selects PH/EN mode
IN/IN mode: Logic high sets AOUT1 high
PH/EN mode: Sets direction of H-bridge A
IN/IN mode: Logic high sets AOUT2 high
PH/EN mode: Logic high enables H-bridge A
IN/IN mode: Logic high sets BOUT1 high
PH/EN mode: Sets direction of H-bridge B
IN/IN mode: Logic high sets BOUT2 high
PH/EN mode: Logic high enables H-bridge B
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