DlnSpiMasterWriteEx() Function

The DlnSpiMasterWriteEx() function sends data via SPI bus. The data is sent as an array of 1-byte elements. By using this function you can use additional attributes.

Syntax

C/C++

DLN_RESULT DlnSpiMasterWriteEx(
  HDLN handle, 
  uint8_t port, 
  uint16_t size, 
  uint8_t *writeBuffer, 
  uint8_t attribute
);

Parameters

handle

A handle to the DLN-series adapter.

port

A number of the SPI master port.

size

The size of the message buffer. This parameter is specified in bytes. The maximum value is 256 bytes.

writeBuffer

A pointer to an array of unsigned 8-bit integers that receives data to be sent to a slave.

attribute

Additional transmission attribute.

DLN_SPI_MASTER_ATTR_LEAVE_SS_LOW - Leave SS low after transmission.
DLN_SPI_MASTER_ATTR_RELEASE_SS - Release SS after transmission.

Return Value

DLN_RES_SUCCESS (0x00): The function successfully sent data.
DLN_RES_INVALID_PORT_NUMBER (0xA8): The port number is not valid. Use the DlnSpiMasterGetPortCount() [1] function to find the maximum possible port number.
DLN_RES_DISABLED (0xB7): The SPI master port is disabled. Use the DlnSpiMasterEnable() [2] function to activate the SPI master port.

Remarks

The DlnSpiMasterWriteEx() function is defined in the dln_spi_master.h file.