{ "type":"object", "required":true, "properties":{ "output": { "type": "string", "title":"SPI path", "enum" : ["/dev/spidev0.0","/dev/spidev0.1"] }, "rate": { "type": "integer", "title":"Baudrate", "default": 2666666 }, "invert": { "type": "boolean", "title":"Invert signal", "default": false } }, "additionalProperties": true }