GPIO Data Access
Following addresses can be used to configure the data access:
| Address Base | Description | Example |
|---|---|---|
| Global | Global addresses of the plugin | Global.0 |
| GPIO | Reading an input from the I/Os | GPIO.13 |
| RevPi | Reading/Writing variables for Revolution Pi | RevPi.I_1 |
Global Addresses
Global addresses of the GPIO driver:
| Address | Description | Data Type |
|---|---|---|
Global.0 | Available flag: 0 = Off; 1 = On | System.Boolean |
Global.1 | Sign of life. Toggles in 1Hz | System.Boolean |
GPIO Addresses
The GPIO addresses access directly the GPIO files on the host system.
| Address | Description | Data Type |
|---|---|---|
GPIO.{x} | Reads the x-th GPIO flag | System.Boolean |
Revolution PI Addresses
Especially for Revolution PI, the GPIO Driver plugin supports reading and writing variables defined in the Hardware Configuration.
| Address | Description | Data Type |
|---|---|---|
RevPi.{name} | Reads a variable {name}. The datatype is specified in the hardware configuration and dynamically read by the GPIO Driver plugin. | System.Boolean System.Byte System.UInt16 System.UInt32 System.String |
NOTE
The hardware configuration is written by the application
PiCtory. Access the application using the web access on the RevolutionPI.
Reading RevPi addresses are on a higher abstraction level than GPIOs:
:::caution** IMPORTANT
Use rather
RevPiaddresses instead ofGPIObecause GPIOs can change along different hardware configurations. :::