Micropython Xbee - How do I get the Xbee serial number and convert it to a string?

Question

I am using an Xbee3 pro with micropython. I'm trying to convert the device serial number to a string. Here is the code.

import xbee
from time import sleep


serial = xbee.atcmd("SL")
serial = serial.decode("utf-8") 
while True:
    print("Sending broadcast data >> %s" % serial)

    try:
        xbee.transmit(xbee.ADDR_BROADCAST, serial)
        print("Data sent successfully")
    except Exception as e:
        print("Transmit failure: %s" % str(e))
    sleep(2)

The data transmits successfully, but I only get three ugly characters that are unreadable.

The result of:

serial = xbee.atcmd("SL")
print(serial)

is

'A\x92\xa4\xbf' 

I really just need to convert 'A\x92\xa4\xbf' to 4192A4BF.

Answer 1

I believe this should work:

''.join('{:02x}'.format(x).upper() for x in xbee.atcmd("SL"))

You're taking each byte of the bytearray (for x in ...) and formatting it as two uppercase hexadecimal characters ('{:02x}'.format().upper()), then joining those together with nothing in between (''.join()).