Control Dimmer Group

Control Dimmer rgoup by adjusting their brightness levels from 0-100%.

Description

The Dimmer group control provides fundamental brightness management for LED nodes in the mesh network. It enables:

• Dimming level (0-100%)

Example

Request Topic

LYT/41e0d6b2-37de-43d8-a348-4ba94853b6cd/GROUP/CONTROL

Request Payload

{
   "version": "v1.0",
   "type": "dimmer",
   "address": 50646,
   "dimming": 40
}

Field Descriptions

Field	Type	Range	Description
version	string	v1.0	API version identifier
type	string	"dimmer"	Message type for DIMMER control
address	number	group address	Unicast address of the target group
dimming	number	0-100	Brightness level in percentage

Response topic

LYT/41e0d6b2-37de-43d8-a348-4ba94853b6cd/GROUP/E/STATUS

Response Payload

Success Response

{
   "version": "v1.0",
   "message": "success",
   "type": "dimmer",
   "address": 50646,
   "dimmer": {
      "dimming": 40,
   }
}

Error Handling

The API may return various error responses based on different scenarios. Here are the possible errors and their resolutions:

1. Constraint Errors (Code: 3005)

a. dimming Constraint:

{
   "message": "error",
   "message_type": {
      "code": 3005,
      "message": "dimming must not be greater than 100",
      "errorCode": "CONSTRAINT_ERROR"
   },
   "type": "dimmer",
   "address": 50646
}

b. Version Constraint:

{
   "message": "error",
   "message_type": {
      "code": 3005,
      "message": "version must be equal to v1.0",
      "errorCode": "CONSTRAINT_ERROR"
   },
   "type": "dimmer",
   "address": 50646
}

c. Type Constraint:

{
   "message": "error",
   "message_type": {
      "code": 3005,
      "message": "type must be one of the following values: cct, dimmer, switch, fan, curtain, rgb",
      "errorCode": "CONSTRAINT_ERROR"
   },
   "type": "dimmer",
   "address": 50646
}

d. Address Constraint:

{
   "message": "error",
   "message_type": {
      "code": 3005,
      "message": "address must be a number conforming to the specified constraints",
      "errorCode": "CONSTRAINT_ERROR"
   },
   "type": "dimmer",
   "address": 50646
}

Constraint errors occur in the following cases:

1. Dimming Constraints:

   • Dimming value exceeds 100%
   • Dimming field is missing
   • Dimming value is less than 0%

2. Version Constraints:

   • Version is not exactly "v1.0"
   • Version field is missing
   • Version field has incorrect format

3. Type Constraints:

   • Type must be one of: "cct", "dimmer", "switch", "fan", "curtain", "rgb"
   • Type field is missing
   • Type field has incorrect value

4. Address Constraints:

   • Address must be a number
   • Address field is missing
   • Address field has incorrect type (must be number)

Resolution:

• Ensure dimming is between 0-100
• Always use "v1.0" as the version value
• Use correct type value from allowed list: "cct", "dimmer", "switch", "fan", "curtain", "rgb"
• Ensure address is a number
• Validate all parameters before sending

2. Group Not Found (Code: 2028)

{
   "message": "error",
   "message_type": {
      "code": 3006,
      "message": "Group not found",
      "errorCode": "GROUP_NOT_FOUND"
   },
   "type": "dimmer",
   "address": 50646
}

Occurs when:

• The specified group address doesn't exist
• Group is offline or unreachable
• Group has been removed from the network

Resolution:

• Verify group address is correct
• Check if group is powered and connected
• Confirm group is properly provisioned

3. Project Not Found (Code: 2002)

{
   "message": "error",
   "message_type": {
      "code": 2002,
      "message": "Project not found",
      "errorCode": "PROJECT_NOT_FOUND"
   },
   "type": "dimmer",
   "address": 50646
}

Occurs when:

• project_uuid in MQTT topic is invalid
• Project has been deleted
• User doesn't have access to the project

Resolution:

• Verify project_uuid
• Ensure project exists
• Check access permissions

4. Request Timeout (Code: 3002)

{
   "message": "error",
   "message_type": {
      "code": 3002,
      "message": "Request Timeout",
      "errorCode": "REQUEST_TIMEOUT"
   },
   "type": "dimmer",
   "address": 50646
}

Occurs when:

• Group doesn't respond within timeout period
• Network connectivity issues
• Group is busy processing other commands

Resolution:

• Check network connectivity
• Verify group is responsive
• Retry the request
• Check for network congestion

Error Code Summary

Code	Error Code	Description	Solution
3005	CONSTRAINT_ERROR	Parameter validation failed	Check input values
3006	GROUP_NOT_FOUND	Group not available	Verify group status
2002	PROJECT_NOT_FOUND	Project doesn't exist	Check project_uuid
3002	REQUEST_TIMEOUT	Request took too long	Check connectivity