RAKWireless
RAK11300 LoRa Module OTAA/ABP Example does not send payload with serial monitor attached
Hey! I just got into the RAKWireless ecosystem and I've been experimenting with your RAK11300 examples when I noticed a strange issue: It seems like the example program does not send any actual LoRa payload messages when being connected to the Arduino serial monitor at the same time.
The log says:
=====================================
Welcome to RAK11300 LoRaWan!!!
Type: OTAA
Region: EU868
=====================================
OTAA Mode, Network Joined!
Sending frame now...
and I can see the device join in ThingsNetwork:
... but no payload message (every 20 seconds) is received. Just join-related messages, then nothing.
This only seems to occur when the Arduno Serial Monitor is attached to the device. Under the following conditions the example code works fine:
- Device connected to external USB power source, no laptop attached via USB
- Device connected to laptop via USB, but no serial monitor attached or Arduino IDE running
- Device connected to laptop, Arduino IDE is running, board is detected but serial monitor is not opened/attached
Only if the serial monitor is attached, the problem occurs and the example code seems to get stuck / freeze at "Sending frame now...".
SW versions:
- Arduino IDE 2.3.3
- WizBlock LoRa example for RAK11300 @ https://github.com/RAKWireless/WisBlock/commit/68173dabbe509307f1912fed05049fe822d4521a
- SX126x-Arduino Library by @beegee-tokyo 2.0.27
