basic button

but_3_control.py

# coding=iso-8859-15
import RPi.GPIO as GPIO
import time
import json
import requests

API = "<API-KEY>" # api-ключ OctoPrint
extTemps = [0, 210, 235] # предустановленные температуры экструдера
bedTemps = [0, 80, 95] # предустановленные температуры подогрева столика

redPin = 22
yellowPin = 27
greenPin = 17

headers = {'X-Api-Key': API,"Content-Type":"application/json"}
ip = 'http://127.0.0.1/api/'
jobUrl = ip+'job'
posUrl = ip+'printer/printhead'
extrUrl = ip+'printer/tool'
bedUrl = ip+'printer/bed'
customUrl = ip+'printer/command'
GPIO.setmode(GPIO.BCM)
#GPIO.setmode(GPIO.BOARD)
GPIO.setup(greenPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(yellowPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(redPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)


print ("start")
s = requests.Session()
state = ""

extInd = 0
bedInd = 0
def sendPause(action):
	print "Executing CMD: "+action
	contents = json.dumps({"command":"pause","action":action})
	requests.post(jobUrl, data=contents, headers=headers)
	return
def sendJobCMD(cmd):
	print "Executing CMD: "+cmd
	contents = json.dumps({"command":cmd})
	requests.post(jobUrl, data=contents, headers=headers)
	return
def buttonParse(green, yellow, red):
	global pressedYforRestart
	global extInd
	global bedInd
	global extTemps
	global bedTemps
	print "green="+str(green)+";yellow="+str(yellow)+";red="+str(red)
	st = json.loads((requests.get(jobUrl, headers=headers)).content)["state"]
	st = st.lower()
	if(green == False):
		if(st == "operational"):
			sendJobCMD("start")
		elif(st == "paused"):
			sendPause("resume")
		elif(st == "printing"):
			sendPause("pause")
		pressedYforRestart = False
	if(yellow == False):
		if(st == "operational"):
			extInd+=1
			if( extInd==len(extTemps)):
				extInd = 0
			contents = json.dumps({"command":"target","targets":{"tool0":extTemps[extInd]}})
			print requests.post(extrUrl, data=contents, headers=headers)
			print "Sent "+contents+" to "+extrUrl
		elif(st == "paused"):
			if(pressedYforRestart== False):
				contents = json.dumps({"absolute":False,"z":10,"command":"jog"})
				print requests.post(posUrl, data=contents, headers=headers)
				print "Sent "+contents+" to "+posUrl
				contents = json.dumps({"commands":["M18"],"parameters":{}})
				print requests.post(customUrl, data=contents, headers=headers)
				print "Sent "+contents+" to "+customUrl
				pressedYforRestart = True
			else:
				sendJobCMD("restart")
				pressedYforRestart = False
		elif(st == "printing"):
			sendPause("pause")
	if(red == False):
		if(st == "operational"):
			bedInd +=1
			if( bedInd==len(extTemps)):
				bedInd = 0
			contents = json.dumps({"target":bedTemps[bedInd],"command":"target"})
			requests.post(bedUrl, data=contents, headers=headers)
			print "Sent "+contents+" to "+bedUrl
		elif(st == "paused"):
			sendJobCMD("cancel")
		elif(st == "printing"):
			sendJobCMD("cancel")
		pressedYforRestart = False
	return
pressedYforRestart = False
waitingForKeyUp = False
while True:
	green = GPIO.input(greenPin)
	yellow = GPIO.input(yellowPin)
	red = GPIO.input(redPin)
	time.sleep(0.1)
	
	if (green == True or yellow == True or red == True):
		if(waitingForKeyUp == False):
			buttonParse(green == False, yellow == False, red == False)
			waitingForKeyUp = True
	elif(waitingForKeyUp == True):
		waitingForKeyUp = False