Hi Maarten,
Used a RFM95 instead of the nicerf (not so nice after all;) and boots up now;
hal_init: ESP architecture
os_init() finished
LMIC_reet() finished
LMIC_setSession() finished
LMICsetAddrMode() finished
Init done
Time: 0
Send, txCnhl: 0
Opmode check: ok
looks ok.
cheers
