DLN_SPI_SLAVE_SET_EVENT Command and Response

The DLN_SPI_SLAVE_SET command is used to configure the event generation conditions for the SPI-slave module of the DLN-series adapter.

DLN_SPI_SLAVE_SET_EVENT Command

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 typedef struct
 {
    DLN_MSG_HEADER header;
    uint8_t port;
    uint8_t eventType;
    uint16_t bufferSize;
 } __PACKED_ATTR DLN_SPI_SLAVE_SET_EVENT_CMD;

Parameters:

header

Defines the DLN message header DLN_MSG_HEADER. The header contains several predefined fields and is used to identify and route messages. You must fill the following fields before sending the command:

Field	Description
size	The size of the message. Must be equal to the size of the DLN_SPI_SLAVE_SET_EVENT_CMD structure.
msgId	Identifies the message. For the DLN_SPI_SLAVE_SET_EVENT command it must be set to 0x0B09. You can use the DLN_MSG_ID_SPI_SLAVE_SET_EVENT constant.
echoCounter	Can be used to link a command to a response. The response will have the same echoCounter value. This field can be any numerical value from 0 to 0xFFFF (65536).
handle	A handle to the DLN-series adapter.

port

A number of the SPI-slave port to be configured.

eventType

Must contain the condition for event generation on the SPI-slave port. The following values are available:

0 or SPI_SLAVE_EVENT_NONE	no events are generated for the current port
1 or SPI_SLAVE_EVENT_SS_RISE	events are generated when an SS line is released
2 or SPI_SLAVE_EVENT_SS_BUFFER_FULL	an event is generated when the allocated buffer becomes full

bufferSize

The size of the buffer that stores data received from a master. This parameter is set in bytes. The maximum value is 256 bytes.

DLN_SPI_SLAVE_SET_EVENT Response

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The adapter sends the DLN_SPI_SLAVE_SET_EVENT response after the DLN_SPI_SLAVE_SET_EVENT command execution. The result field informs a user if the SPI-slave event generation conditions have been successfully set.

 typedef struct
 {
    DLN_MSG_HEADER header;
    DLN_RESULT result;
 } __PACKED_ATTR DLN_SPI_SLAVE_SET_EVENT_RSP;

Parameters:

header

Defines the DLN message header DLN_MSG_HEADER. The response header contains the following fields:

Field	Description
size	The size of the message. It is equal to the size of the DLN_SPI_SLAVE_SET_EVENT_RSP structure.
msgId	Contains the message id. For the DLN_SPI_SLAVE_SET_EVENT response it is set to 0x0B09. The DLN_MSG_ID_SPI_SLAVE_SET_EVENT constant can be used to check the message ID.
echoCounter	Links a command to a response. The echoCounter value is copied from the respective command header.
handle	A handle to the DLN-series adapter. You can use the handle field to determine the adapter that have sent the response.

result

Contains the result of the command execution. For DLN_SPI_SLAVE_SET_EVENT command DLN-series adapter can return the following result values:

Return Code	Description
DLN_RES_SUCCESS	The event generation conditions have been successfully set.

DLN_SPI_SLAVE_SET_EVENT Command and Response