57 lines
No EOL
1.8 KiB
Python
57 lines
No EOL
1.8 KiB
Python
# import the RPi library
|
|
import RPi.GPIO as GPIO
|
|
import time
|
|
|
|
# initialize the ports
|
|
GPIO.setwarnings(False)
|
|
GPIO.setmode(GPIO.BCM)
|
|
|
|
# preset the port for button and alarm
|
|
GPIO.setup(5,GPIO.IN) # button 1
|
|
GPIO.setup(6,GPIO.IN) # button 2
|
|
GPIO.setup(13,GPIO.IN) # button 3
|
|
GPIO.setup(16,GPIO.IN) # button 4
|
|
GPIO.setup(26,GPIO.OUT) # alarm
|
|
|
|
# preset the port for the L293D
|
|
Motor1 = {'EN': 25, 'input1': 24, 'input2': 23}
|
|
Motor2 = {'EN': 17, 'input1': 27, 'input2': 22}
|
|
for x in Motor1:
|
|
GPIO.setup(Motor1[x], GPIO.OUT)
|
|
GPIO.setup(Motor2[x], GPIO.OUT)
|
|
EN1 = GPIO.PWM(Motor1['EN'],100)
|
|
EN2 = GPIO.PWM(Motor2['EN'],100)
|
|
EN1.start(0)
|
|
EN2.start(0)
|
|
|
|
while True:
|
|
if not GPIO.input(5):
|
|
# If press button 1, two DC motors running full speed forward
|
|
EN1.ChangeDutyCycle(100)
|
|
EN2.ChangeDutyCycle(100)
|
|
print ("FORWARD MOTION")
|
|
GPIO.output(Motor1['input1'],GPIO.HIGH)
|
|
GPIO.output(Motor1['input2'],GPIO.LOW)
|
|
GPIO.output(Motor2['input2'],GPIO.HIGH)
|
|
GPIO.output(Motor2['input1'],GPIO.LOW)
|
|
elif not GPIO.input(6):
|
|
# If press button 2, two DC motors running full speed backword
|
|
EN1.ChangeDutyCycle(100)
|
|
EN2.ChangeDutyCycle(100)
|
|
print ("BACKWORD MOTION")
|
|
GPIO.output(Motor1['input1'],GPIO.LOW)
|
|
GPIO.output(Motor1['input2'],GPIO.HIGH)
|
|
GPIO.output(Motor2['input2'],GPIO.LOW)
|
|
GPIO.output(Motor2['input1'],GPIO.HIGH)
|
|
elif not GPIO.input(13):
|
|
# If press button 3, two DC motors stop running
|
|
print ("STOP")
|
|
EN1.ChangeDutyCycle(0)
|
|
EN2.ChangeDutyCycle(0)
|
|
elif not GPIO.input(16):
|
|
# If press button 4, alarm starts beeping
|
|
print ("ALARM")
|
|
GPIO.output(26,True)
|
|
else:
|
|
# If no button been pressed, alarm stop beeping
|
|
GPIO.output(26,False) |