I2C Read (Function Index 27)
This _DSM Interface for Byte Addressable Energy Backed Function Class (Function Interface 1) function reads an Inter-Integrated Circuit (I2C) register. This functionality enables scenarios that require the use of vendor-specific registers. It's also used for debugging.
Input
Arg3
| Field | Byte length | Byte offset | Description |
|---|---|---|---|
| Page | 1 | 0 | The page in which the I2C register is located. |
| Offset | 1 | 1 | The register’s offset inside the page. |
Output
| Field | Byte length | Byte offset | Register | Description |
|---|---|---|---|---|
| Status | 4 | 0 | This function can return the following Function-Specific Error Code: 1: Invalid page. For more information, see _DSM Method Output. | |
| Data | 1 | 4 | The data in the specified register. |
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