MicroPython Forum (Archive)

Posted: **Thu Jan 16, 2020 5:46 pm**

MicroPython v1.12-58-g7ef2f6511 on 2020-01-12; ESP32 module with ESP32

OK, so I am reading the docs at:

https://docs.micropython.org/en/latest/ ... .WLAN.html

bottom of the page where they suggest that

print(nic.config('mac'))

should return the mac address of the 'nic' interface.

When I run it however, I get only part of the mac in response:

b'$b\xab\xd4\xce\xe8'

My device's nic is actually

24: 62: ab: d4: ce: e8

.

So, what's up with that?

Thanks,

Brian H.

Posted: **Thu Jan 16, 2020 5:58 pm**

The dollar sign at the beginning is one byte, the 'b' the second, followed by four bytes that don't have a corresponding ascii character and are therefore displayed in their \x representation.

Regards, Jan

Posted: **Thu Jan 16, 2020 6:26 pm**

Yes, I understand now. Thanks!

Brian H.

Posted: **Thu Jan 16, 2020 7:22 pm**

Hi, just mention that MicroPython introduced a separator option for binascii.hexlify function which is quite nice for this case:

Code: Select all

>>> from binascii import hexlify
>>> hexlify(b'$b\xab\xd4\xce\xe8', ':')
b'24:62:ab:d4:ce:e8'

Or

Code: Select all

>>> hexlify(b'$b\xab\xd4\xce\xe8', ':').decode()
'24:62:ab:d4:ce:e8'

In case you want a string.

Posted: **Thu Jan 16, 2020 9:43 pm**

cgglzpy wrote: ↑
Thu Jan 16, 2020 7:22 pm
Hi, just mention that MicroPython introduced a separator option for binascii.hexlify function ...

Neat, thanks!

MicroPython Forum (Archive)

Partial mac address ?

Partial mac address ?

Re: Partial mac address ?

Re: Partial mac address ?

Re: Partial mac address ?

Re: Partial mac address ?