This is a small python script which does the following:
- connect via RS232 to a NAD Electronics Amplifier (tested with a C-368 model)
- connect to a MQTT broker and publish all messages from the device
- subscribe to a given topic and forward all messages as commands to the device
- implement a simple REST-API to query/configure the C-368 device
This has been tested on the following setup:
- Raspberry Pi 3, running Debian Jessie
- Python 2.7 and python-pip from official packages
- the following installed via pip: paho-mqtt, pyserial, flask
- a PL2303-type USB2Serial Adapter
The current state of this program is 'proof-of-concept', therefore it lacks many import aspects:
- proper error handling
- configuration via arguments/config file
- clean code :-)
- you can not disable mqtt
- no virtualenv
Query the current power state:
curl http://example.host:3333/nad/c368/v1.0/Main/Power
{
"command": "main.power",
"error": 0,
"value": "on"
}
Set the current power:
curl -X PUT http://example.host:3333/nad/c368/v1.0/Main/Power/on
{
"command": "main.power",
"error": 0,
"value": "on"
}
Übersicht von RS232 Befehlen für den NAD C328Permalink
- Ein- und Ausschalten:
Main.Power=ON|OFF
- Quelle eines vor/zurück schalten:
Main.Source+|-
- Direkte Quelle anwählen:
Main.Source=STREAM|OPT1|OPT2|BT|TV
- Lautstärke um im ein Inkrement erhöhen/verringern:
Main.Volume+|-
- Direkte Lautstärke einstellen:
Main.Volume=-20