I2C Event Structures

This section describes the structures used for I²C events. These structures are declared in the dln_i2c_slave.h file.

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DLN_I2C_SLAVE_READ_EV Structure

The DLN_I2C_SLAVE_READ_EV structure contains information about the I²C read event.

Syntax

C/C++

typedef struct
{
        DLN_MSG_HEADER header;
        uint16_t eventCount;
        uint8_t eventType;
        uint8_t port;
        uint8_t slaveAddress;
        uint16_t size;
} __PACKED_ATTR DLN_I2C_SLAVE_READ_EV;

Event Structure Members

header

Defines the DLN message header. It should have the following value: DLN_MSG_ID_I2C_SLAVE_READ_EV (0x0C10).

eventCount

The number of events generated after the event configuration changed.

eventType

The type of generating events. The following values are possible:


Value	Constant	Description
1	`DLN_I2C_SLAVE_EVENT_READ`	Events are generated when the I²C master initiates receiving data from the I²C slave device.
3	`DLN_I2C_SLAVE_EVENT_READ_WRITE`	Events are generated when the I²C master initiates receiving data from or transmitting data to the I²C slave device.

port

The number of the I²C slave port where the event is generated.

slaveAddress

The I²C slave address assigned to the DLN adapter that generated the event.

size

A size of the buffer that stores the event data.

DLN_I2C_SLAVE_WRITE_EV Structure

The DLN_I2C_SLAVE_WRITE_EV structure contains information about the I²C write event.