LoPy DevEUI set to 0000000000000000

[Guizmolux]

Hello,

The first time I got the LoPy DevEUI (dev_eui = binascii.hexlify(network.LoRa().mac())), it was a normal DevEUI type (70b3d549XXXXXXXX). A day after, it was 00000000000000.

What could have occured to erase the hardcoded DevEUI of the LoPy?

Thanks,
Guizmo

[seb]

Have you performed any firmware updates, or tried to flash your own firmware?

[Guizmolux]

@seb
I used the Firmware update tool (last version) before loading any code on the board
I also flashed the board with the mkfs command

[seb]

Could you please email me your wifi mac address to sebastian@pycom.io. You can get this by running:

from network import WLAN
import binascii
print(binascii.hexlify(WLAN().mac()))

[danielm]

I am using following script to set arbitrary DevEUI:

fo = open("/flash/sys/lpwan.mac", "wb")
mac_write=binascii.unhexlify("b44b2bdfea11fdb9")
fo.write(mac_write)
fo.close()

Then reboot the device.
"b44b2bdfea11fdb9" is an example of arbitrary DevEUI

[andrethemac]

I have the same problem after upgrading to release='1.16.0.b1', version='v1.8.6-849-055728a on 2018-02-13'
now I have to do a wlan init (and wlan deinit) to get the mac address
firmware bug?
tnx
André