Steve Karg
94 lines
2.5 KiB
Markdown
94 lines
2.5 KiB
Markdown
# Raspberry Pi connected to a Blinkt! RGB card demo
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This demo includes a BACnet server with Color objects and service handlers
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for the eight RGB (red-green-blue) LEDs attached to the Blinkt! card.
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## Installation
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The demo uses pigpiod (Pi GPIO Daemon) and developer library. To install
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and run the daemon at powerup (and immediately):
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$ sudo apt install libpigpio-dev libpigpiod-if-dev pigpiod
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$ sudo systemctl enable pigpiod
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$ sudo systemctl start pigpiod
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## WiFi Power
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If you are using a Raspberry Pi with WiFi, you will likely want
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to disable WiFi Power saving. Under Raspberry Pi OS, so the following.
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### Startup service in systemd
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To manage to start programs you should use systemd Unit files.
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File name: /etc/systemd/system/wlan0pwr.service
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You can edit the file using the systemd edit:
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rpi ~$ sudo systemctl --full --force edit wlan0pwr.service
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In the empty editor insert these statements, save them and quit the editor:
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[Unit]
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Description=Disable wlan0 powersave
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After=network-online.target
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Wants=network-online.target
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[Service]
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Type=oneshot
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ExecStart=/sbin/iw wlan0 set power_save off
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[Install]
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WantedBy=multi-user.target
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Enable the new service with:
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rpi ~$ sudo systemctl enable wlan0pwr.service
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## Building the Blinkt! BACnet Application
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Build from the root folder:
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$ make blinkt
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## Running the Blinkt! BACnet Application
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Run from the bin/ folder:
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$ ./bin/bacblinkt 9009
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## Blinkt! as a Startup service with systemd
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To manage to start programs you should use systemd Unit files.
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Here is a very simple template you can use to start to solve your problem.
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Create a new service with:
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rpi ~$ sudo systemctl --full --force edit bacnet.service
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In the empty editor insert these statements, save them and quit the editor:
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[Unit]
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Description=BACnet Service
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After=network-online.target
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[Service]
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ExecStart=/home/pi/bacnet.sh
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[Install]
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WantedBy=network-online.target
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Enable the new service after the next reboot with:
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rpi ~$ sudo systemctl enable bacnet.service
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Create your bacnet.sh shell script in your home folder (change from pi if
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that is not your home folder). Use the shell script to set any environment
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variables that you want, or configuration settings for the bin/bacblinkt
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application such as a specific device ID.
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A simplistic bacnet.sh script will look like this (with stdout/stderr to /dev/null):
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#!/bin/bash
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/home/pi/bacnet-stack/bin/bacblinkt 9009 > /dev/null 2>&1
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