Startup & Logs
Ways to start DroneBridge modules & how to access logs generated by the started modules
All modules can be started manually but it is preferred to use
start_db_modules.py script. On DroneBridge for Raspberry Pi the startup of modules is done by the start_db service. The source code sits inside the root directory of the repository. The service can be updated/registered using:sudo cp /home/pi/DroneBridge/start_db /etc/init.d/start_db
sudo update-rc.d -f start_db remove
sudo update-rc.d start_db defaults
The status of the DroneBridge modules can be checked using:
sudo /etc/init.d/start_db [status|start|stop]
or:
service start_db [status|start|stop]
Since it is a service, all logs will be written to the journal. The logs can be viewed using one of the following commands:
journalctl -u start_db.service [-f for real-time]
systemctl | grep start_db | less
All DroneBridge modules log to syslog. In
/DroneBridge/log/db_modules.log are all relevant log entries.Connect via TCP to the Raspberry Pi on port
1605 and you will receive realtime syslog logs. Forward the messages to your favourite log viewer like Syslog Watcher. Or use the provided Python 3 script below to output directly to console.import socket
from time import sleep
UDP_PORT_SYSLOG_SERVER = 1605
# Raspberry Pi IP when connected to GND station via WiFi: 192.168.2.1
if __name__ == '__main__':
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
reconnect = True
while reconnect:
try:
sock.connect(('IP-OF-RPi', UDP_PORT_SYSLOG_SERVER))
reconnect = False
except ConnectionRefusedError:
print("Retrying")
sleep(1)
while True:
try:
data = sock.recv(1024)
print(data.decode("utf-8"))
except KeyboardInterrupt:
break
socket.socket.close(sock)
Last modified 2yr ago