The loramac-node library uses math functions from math.h that
are not included in the minimal lib.
This commit changes the samples project config to always build
with newlib and adds a dependency to newlib.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
Change to display RSSI and SNR values of the received data.
This change helps to test LoRa's communication distance and
communication quality.
Signed-off-by: Kwon Tae-young <tykwon@m2i.co.kr>
