8mamo10 / mrhs

mrhs

• Monitoring Running Hangout Status
• M5Stack + MQTT

mrhs agent

• deploy

$ go build -o path/to/mrhsagent agent.go
$ sudo ln -s path/to/mrhsagent /usr/local/bin/mrhsagent
$ sudo ln -s path/to/mrhs.service /lib/systemd/system/mrhs.service
$ sudo ln -s path/to/calendar.json /etc/mrhs/calendar.json
$ sudo ln -s path/to/adafruit.json /etc/mrhs/adafruit.json
$ sudo ln -s path/to/credential.json /etc/mrhs/credential.json
$ sudo systemctl restart mrhs.service

• calendar.json
  • set calendar id to be monitored

$ cat calendar.json
{
  "calendar_id": "[email protected]"
}

• .adafruilt.json
  • set information to use Adafruit IO

$ cat adafruit.json
{
  "username": "xxx",
  "key": "yyy",
  "feed": "zzz"
}

• credential.json
  • put a file to be served for google service account

mrhs client

$ open client/client.ino

mrhs cli(deprecated)

• Update username and key on script/.mrhs.json
• Set up cron at an appropriate frequency

# Every minute
*   * * * * ${path/to/mrhs_agent}/mrhs_cli.sh

# Every 5minutes
*/5 * * * * ${path/to/mrhs_agent}/mrhs_cli.sh

Notes

MQTT broker

• Using io.adafruit this time.
• Sign up to https://io.adafruit.com/
• Create Feeds mrhs
  • https://io.adafruit.com/[Username]/feeds/mrhs
• Create Dashboard mrhs
  • https://io.adafruit.com/[Username]/dashboards/mrhs

MQTT client

• Using MQTT.fx
  • http://mqttfx.jensd.de/
• Download and install it
• Open the app and add a connection
  • Profile Name: mrhs
  • Profile Type: MQTT Broker
  • Broker Address: io.adafruit.com
  • Broker Port: 8883
  • Client ID: MQTT_FX_Client
    • Anything is ok
    • Do Generate is also good
  • User Credentials
    • User Name: [Username] of adafruit
    • Password: [Active Key] of adafruit
      • Can get from Afafruit IO Key screen
  • SSL/TLS
    • Check Enable SSL/TLS
    • Protocol: TLSv1.2
• Connect
• Publish
  • Input topic: [Username]/feeds/mrhs
  • Input any string and push Publish
• Subscribe
  • Input topic: [Username]/feeds/mrhs
  • Push Subscribe

M5Stack

• https://github.com/8mamo10/m5stack

Adafruit_MQTT

• Sketch -> Include Library -> Manage Libraries
  • Adafruit MQTT Library (vresion was 1.3.0 when I did)

mosquitto

• https://mosquitto.org/
• brew install mosquitto

$ /usr/local/sbin/mosquitto -c /usr/local/etc/mosquitto/mosquitto.conf
1600654250: mosquitto version 1.6.12 starting
1600654250: Config loaded from /usr/local/etc/mosquitto/mosquitto.conf.
1600654250: Opening ipv6 listen socket on port 1883.
1600654250: Opening ipv4 listen socket on port 1883.
1600654250: mosquitto version 1.6.12 running
1600654260: New connection from ::1 on port 1883.
1600654260: New client connected from ::1 as SUB (p2, c1, k60).
1600654278: New connection from ::1 on port 1883.
1600654278: New client connected from ::1 as PUB (p2, c1, k60).
1600654278: Client PUB disconnected.
1600654282: Client SUB disconnected.
^C1600654290: mosquitto version 1.6.12 terminating

$ mosquitto_sub -t test -i SUB
Hello

$ mosquitto_pub -t test -m Hello -i PUB

$ mosquitto_sub -d -h test.mosquitto.org -p 8883 -t "#" --tls-version tlsv1.2 --cafile mosquitto.org.crt

$ mosquitto_sub -d -h io.adafruit.com -p 1883 -t ${username}/feeds/mrhs -u ${username} -P ${key}

$ mosquitto_pub -d -h io.adafruit.com -p 1883 -t ${username}/feeds/mrhs -u ${username} -P ${key} -m 1

$ mosquitto_pub -L mqtt://${username}:${key}@io.adafruit.com/${username}/feeds/mrhs -s

$ mosquitto_sub -d -h io.adafruit.com -p 8883 -t ${username}/feeds/mrhs -u ${username} -P ${key} --tls-version tlsv1.2 --cafile /etc/ssl/cert.pem

References

• https://learn.adafruit.com/naming-things-in-adafruit-io/naming-and-accessing-feeds-with-the-mqtt-api
• https://learn.adafruit.com/mqtt-adafruit-io-and-you/overview
• https://io.adafruit.com/api/docs/mqtt.html#adafruit-io-mqtt-api
• https://io.adafruit.com/api/docs/mqtt.html#mqtt-connection-details