M5Stack Helium Sample

from m5stack import *
from m5ui import *
from uiflow import *
import time

setScreenColor(0x222222)

label0 = M5TextBox(12, 152, "Text", lcd.FONT_Default,0xFFFFFF, rotate=0)

string = None

def cmd(string):
  label0.setText(str((str('AT+') + str(string))))
  uart1.write(str(string)+"\r\n")
  wait4Reply()

def wait4Reply():
  global string
  while not (uart1.any()):
    wait_ms(250)
    if btnC.isPressed():
      break
  label0.setText(str(uart1.read()))

uart1 = machine.UART(1, tx=17, rx=16)
uart1.init(9600, bits=8, parity=None, stop=1)

cmd('AT+RESET')
wait(2)
cmd('AT+ID=DevEui,"0D97AADF5B714155"')
cmd('AT+ID=AppEui,"7ECA8F3D7AD96E49"')
cmd('AT+DR=US915')
cmd('AT+CH=0,903.9,DR0,DR3')
cmd('AT+CH=1,904.1,DR0,DR3')
cmd('AT+CH=2,904.3,DR0,DR3')
cmd('AT+CH=3,904.5,DR0,DR3')
cmd('AT+CH=4,904.7,DR0,DR3')
cmd('AT+CH=5,904.9,DR0,DR3')
cmd('AT+CH=6,905.1,DR0,DR3')
cmd('AT+CH=7,905.3,DR0,DR3')
cmd('AT+DR=DR2')
cmd('AT+KEY=AppKey,"0DCD2F48E803D8658F8848986DA3A2A5"')
cmd('AT+CLASS=A')
cmd('AT+Join')
wait4Reply()