# mx05v04.py MX05V, FS1000S 433MHz Demo Program v0.4  tlfong01  2021oct23hkt2202
# Pico GP Pin Assignment
#   GP0 = UART0 TxD = MX05    433MHz Revciver Module Data Pin
#   GP1 = UART0 RxD = FS1000D 433MHz Transmit Module Data Pin
# Setup
#   To loop back, short TxD pin to RxD pin

from machine import UART, Pin
import utime

uart0 = UART(0, baudrate = 9600, tx=Pin(0), rx=Pin(1))

def testUartLoopBackV01():
    print('Begin testUartLoopBackV01(), ...')
    testMsg = 'Hello World'
    print('  writeTestMsg =', testMsg)
    uart0.write(testMsg)  # write 5 bytes
    utime.sleep(0.5)
    bytesRead = uart0.read(20) # read up to 5 bytes
    print('  bytes read =', bytesRead)
    print('End   testUartLoopBackV01().')
    return

# *** Main ***

testUartLoopBackV01()

# .END

''' *** Sample output ***
>>> %Run -c $EDITOR_CONTENT
Begin testUartLoopBackV01(), ...
  writeTestMsg = Hello World
  bytes read = b'Hello World'
End   testUartLoopBackV01().
>>> 
'''