def setup(pin):
"""
Setup GPIO pin
"""
GPIO.setmode(GPIO.BOARD)
GPIO.setup(pin, GPIO.OUT)
GPIO.setwarnings(False)
def gpio_setup():
"""
Setup GPIO_PIN as PWM input and start fan
"""
try:
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(GPIO_PIN, GPIO.OUT)
fan = GPIO.PWM(GPIO_PIN, PWM_FREQ)
return fan
except IndexError:
print('\n Error: Pin "{0}" does not exist.\n')
sys.exit(2)
else:
print('\n Error: Could not setup GPIO pin "{0}".\n'.format(GPIO_PIN))
sys.exit(4)
def __init__(self):
# rospy.init_node("spinny")
self.command_topic = '/motor_speed'
self.sub = rospy.Subscriber(self.command_topic, Int32,
self.speed_callback)
print("Setting up GPIO pins")
# rospy.on_shutdown(self.shut)
self.pwm_pin = 16
self.power_pin = 18
GPIO.setwarnings(True)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(self.pwm_pin, GPIO.OUT)
GPIO.setup(self.power_pin, GPIO.OUT, initial=GPIO.HIGH)
print("Starting PWM output")
self.p = GPIO.PWM(self.pwm_pin, 50)
self.p.start(0)
print("GPIO.BCM " + str(GPIO.BCM))
print("GPIO.OUT " + str(GPIO.OUT))
print("GPIO.IN " + str(GPIO.IN))
print("GPIO.HIGH " + str(GPIO.HIGH))
print("GPIO.LOW " + str(GPIO.LOW))
print("GPIO.PUD_UP " + str(GPIO.PUD_UP))
print("GPIO.PUD_DOWN " + str(GPIO.PUD_DOWN))
print("GPIO.VERSION " + str(GPIO.VERSION))
print("GPIO.RPI_INFO " + str(GPIO.RPI_INFO))
# Set Variables
var_gpio_out = 82
var_gpio_in = 81
# GPIO Setup
GPIO.setwarnings(True)
GPIO.setmode(GPIO.ROCK)
GPIO.setup(var_gpio_out, GPIO.OUT, initial=GPIO.HIGH) # Set up GPIO as an output, with an initial state of HIGH
GPIO.setup(var_gpio_in, GPIO.IN, pull_up_down=GPIO.PUD_UP) # Set up GPIO as an input, pullup enabled
# Test Output
print("")
print("Testing GPIO Input/Output:")
var_gpio_state = GPIO.input(var_gpio_out) # Return state of GPIO
print("Output State : " + str(var_gpio_state)) # Print results
sleep(1)
GPIO.output(var_gpio_out, GPIO.LOW) # Set GPIO to LOW
# Test PWM Output
p=GPIO.PWM(var_gpio_out, 60) # Create PWM object/instance
MQTT_OFF = "OFF"
MQTT_TOGGLE = "TOGGLE"
# The RockPro version of the library seems to return strings not ints - is this
# intended behavior?
HIGH = "1"
LOW = "0"
#LED_PIN = 27
#BUTTON_PIN = 4
LED_PIN = 16
BUTTON_PIN = 13
GPIO.setmode(GPIO.BOARD)
GPIO.setrock('ROCKPRO64')
GPIO.setwarnings(False);
GPIO.setup(LED_PIN, GPIO.OUT)
GPIO.output(LED_PIN, GPIO.LOW)
led_state = False
time.sleep(1)
GPIO.setup(BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
class MyHandlerForHTTP(BaseHTTPRequestHandler):
"""
Handler for HTTP messages
"""
def do_GET(self):
global led_state