Host Protocols Direct Protocol CONTROL class Actions I2C READ
April 13, 2023 at 2:39 AMI2C_READ
Role
Allow the host to perform i2c read calls.
Warning
Not all hardware support this command. For devices without such capability, this instruction will generate an error.
Access condition
Depending on the configuration-defined access conditions and on the type of host interface (Local / Remote), this instruction may either be freely usable or restricted to authenticated communications.
Command
| Field | Value |
|---|---|
| CLA | 58 (CONTROL) |
| INS | 12 |
| Data byte 0 | I2C address, 01 to 7F |
| Data byte 1 | How many bytes to read |
Response
| Field | Length | Description / remark |
|---|---|---|
| STA | 1 byte | STAtus |
| Data | 0 to N bytes | Value of the data |