After EV_REJOIN_FAILED the board seems to lock up with no re-join attempts?

[bubba198]

Hi,

Using "Sparkfun Pro RF - Basic LongFi Example":

The example code works very well. Joins Helium and pushed payload just fine. That is until after EV_REJOIN_FAILED message is received and then the board seems to drop-off Hilum and locks up with no re-join attempts thereafter?

Only reset gets the board out of this state. With mobile setup EV_LINK_DEAD is not uncommon as reception does change when the node moves from the range of one hot spot to another but it looks like that once EV_LINK_DEAD occurs re-join is not attempted and the node is basically dead. Here's the sequence of events which leads to this condition:

43201269: EV_TXCOMPLETE (includes waiting for RX windows)
Packet queued
43671127: EV_TXCOMPLETE (includes waiting for RX windows)
Packet queued
44140952: EV_TXCOMPLETE (includes waiting for RX windows)
44140974: EV_LINK_DEAD
OP_TXRXPEND, not sending
44695777: EV_REJOIN_FAILED

Any possible remedy to the problem?

Thank you Boyan

[kent-williams]

Hi @bubba198,

Very sorry this got no response sooner!

Try increasing the LINK_CHECK_DONE (default is 24) in the lmic.h file found here at line 36:

linux: /home/{user}/Arduino/libraries/IBM_LMIC_framework/src/lmic/lmic.h
windows: Documents/Arduino/libraries/IBM_LMIC_framework/src/lmic/lmic.h
mac os: Documents/Arduino/libraries/IBM_LMIC_framework/src/lmic/lmic.h

[kent-williams]

Closing this as there has been no response in some time.