GPIO Read/Write

1. Create nodes

(1) Open CommBridge Digital Twin and switch to Device Connectivity.

(2) Drag GPIO Read/Write, Data Processing, and MQTT Upload into the workspace to create three nodes.

(3) Connect GPIO Read/Write → Data Processing → MQTT Upload.

2. Create a scheme

(1) Double-click GPIO Read/Write and select Add scheme.

(2) Enter connection settings and select Next.

(3) Select Add group, enter group information, and confirm.

(4) Select Add data, enter point configuration, and confirm.

(5) Select Finish to add the acquisition scheme.

(6) Enable the scheme and select Save.

3. View results

(1) Select Deploy under Device Connectivity and wait for success.

(2) Switch to Digital Twin and hover over GPIO Read/Write to display node information.

(3) Select a scheme to view real-time and historical point data for its groups.

Acquired data before processing:

4. Configuration reference

Connection settings

Name	Description	Format	Example	Notes
Scheme name	User-defined scheme name	Nonempty	GPIO acquisition

Add groups

Parameter	Description	Format	Example	Notes
Group name	User-defined group name	Nonempty	GPIO group

Add data

Parameter	Description	Format	Example	Notes
Name	Point name, unique within a group	Nonempty; cannot begin with a digit or underscore or contain spaces	DI1
GPIO	Physical device GPIO pin with a unique identifier, such as GPIO1 or GPIO2	Dropdown	DI1
Direction	Input/output mode: in reads external signals; out controls external devices	Dropdown	in
Read/write mode	Supports ro (read-only) and rw (read/write)	ro, rw, wo	ro
Calculation	User-defined formula based on data aliases	Unrestricted

Note:

Supported GPIO mappings:

1. EPC-5710: GPIO1–GPIO5.
2. Kedge-350: DI1–DI8 and DO1–DO8.