"""
Intermitant issues with loop not restarting.
"""
import RPi.GPIO as GPIO
import time
import numpy as np
from webiopi.devices.digital.pcf8574 import PCF8574A
mcp = PCF8574A(slave=0x38) # decimal 56
num_led = 4
LED_arr = np.arange(num_led) # Set arr components as 0, 1, 2
SWITCH0 = mcp.setFunction(4, GPIO.IN)
for i in range(num_led):
mcp.setFunction(LED_arr[i], GPIO.OUT) # Set pin as an output
# Loop for ever
while True:
if (mcp.digitalRead(4) == GPIO.LOW): # Button pressed
mcp.portWrite(15) # Turn all LEDs of
loop = True
while loop: # Wait for button to be pressed again
time.sleep(0.2) # Allow for finger to release from button
mcp.digitalWrite(4, GPIO.HIGH)
if (mcp.digitalRead(4) == GPIO.LOW
): # Button pressed again so start looping again
loop = False
time.sleep(0.2) # Allow for finger to release from button
mcp.digitalWrite(4, GPIO.HIGH)
# Imports import RPi.GPIO as GPIO import time from webiopi.devices.digital.pcf8574 import PCF8574A # Setup chip mcp = PCF8574A(slave=0x38) # Set which PCF8574 GPIO pin is connected to the LED (negative logic) LED0 = 0 # Setup GPIOs mcp.setFunction(LED0, GPIO.OUT) #Set Pin as output # Turn on the LED for the first time mcp.digitalWrite(LED0, GPIO.LOW) # Loop for ever # Insert your code here # Include a delay time.sleep(0.10)
# Imports import webiopi from webiopi.devices.digital.pcf8574 import PCF8574A # Retrieve GPIO lib GPIO = webiopi.GPIO # Setup chip mcp = PCF8574A(0x38) # Set which PCF8574 GPIO pin is connected to the LED LED0 = 0 # Set pin as output mcp.setFunction(LED0, GPIO.OUT) # Turn on the LED mcp.digitalWrite(LED0, GPIO.LOW) # Insert your code here