queue-request.py ESP8266, HC-SR05, UART Thermal Printer with Cutter, Micropython

# URL http://  URL   /queue/request.php?print=true&category=1&json=json"
# response ex. {"category":"Queue", "number":"001", "date":"2021-02-02 12:34:56"}

import network,socket,json
from machine import Pin,time_pulse_us,UART
from time import sleep,sleep_ms,sleep_us
blk=Pin(13,Pin.OUT,value=1)
buz=Pin(12,Pin.OUT,value=0)
trg=Pin(14,Pin.OUT,value=0)
ech=Pin(0,Pin.IN)
prt=UART(1,9600,bits=8,parity=None,stop=1)
sta=network.WLAN(network.STA_IF)

def dbg(s):
 print(s)
def htG(u):
 print(u);_,_,h,f=u.split('/',3);h,p,_=(h+":80:").split(':',2);p=int(p);a=socket.getaddrinfo(h,p)[0][-1];s=socket.socket();s.connect(a);s.send(bytes("GET /%s HTTP/1.0\r\nHost: %s\r\n\r\n"%(f,h),'utf8'));d=bytes([]);w=0
 while 1:
  d=d+s.recv(1024)
  if w==len(d)or len(d)>1024:
   break
  w=len(d)
 while s.recv(64):
  pass
 s.close();_,d=str(d,'utf8').split("\r\n\r\n",1)
 return d

cnt=0
while 1:
 try:
  dbg("ite")
  if not sta.isconnected():
   dbg("Con")
   blk.off();sleep(1);blk.on();
   sta.active(True);sta.connect("   SSID   ","   PASSWORD     ");sleep(1)
  trg.on();sleep_us(10);trg.off();mm=time_pulse_us(ech,1,30000)*100//582
  if 10<mm<300:
   cnt=cnt+1
  else:
   cnt=0
  dbg("mm="+str(mm)+" cnt="+str(cnt))
  if cnt==0:
   blk.on();sleep_ms(250)
  elif cnt in(1,3,4,5,7,8,9,11,12,13):
   blk.off();sleep_ms(250)
  elif cnt in(2,6,10):
   blk.on();buz.on();sleep_ms(100);buz.off();blk.off();sleep_ms(150)
  elif cnt==14:
   blk.on();buz.on();sleep_ms(250);buz.off()
   a=("  __     _   ___   ____  _ _   ___    __   ____  ___   ___  "+
      " /  \   / | |_  ) |__ / | | | | __|  / /  |__  |( _ ) / _ \ "+
      "| () |  | |  / /   |_ \ |_  _||__ \ / _ \   / / / _ \ \_  / "+
      " \__/   |_| /___| |___/   |_| |___/ \___/  /_/  \___/  /_/  ")
   obj=json.loads(htG("http://    URL    /queue/request.php?print=true&category=1&json=json"))
   dbg("cat="+obj['category']+" no="+obj['number']+" date="+obj['date'])
   prt.write("    COMPANY NAME     \r\nCategory: "+obj['category']+"\r\n")
   x,y,z=[int(i)for i in obj['number']]
   for i in range(0,4):
    prt.write("   "+a[60*i+6*x:60*i+6*x+6]+a[60*i+6*y:60*i+6*y+6]+a[60*i+6*z:60*i+6*z+6]+"\r\n")
   prt.write(obj['date']+"\r\n")
   prt.write(b"\x0a\x0a\x1d\x56\x00\r\n")
  else:
   sleep_ms(250)
 except KeyboardInterrupt:
  break
 except:
  pass
  sleep(250)