DlnSpiMasterReadWriteSS() Function

The DlnSpiMasterReadWriteSS() function selects the specified SS line, transmits data via SPI bus and releases the SS line.

Syntax

C/C++

DLN_RESULT DlnSpiMasterReadWriteSS(
    HDLN handle, 
    uint8_t port,

C/C++

    uint8_t ss, 
    uint16_t size, 
    uint8_t *writeBuffer, 
    uint8_t *readBuffer
);

Parameters

handle: A handle to the DLN-series adapter.
port: A number of the selected SPI master port.
ss: The value on the SS lines. This value can include only one zero bit.
size: The size of the message buffer. This parameter is specified in bytes.
writeBuffer: A pointer to an array of unsigned 8-bit integers that receives data to be sent to a slave.
readBuffer: A pointer to an array of unsigned 8-bit integers that receives data from the slave.

Return Value

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

Remarks

The DlnSpiMasterReadWriteSS() function is defined in dln_spi_master.h file.

Вы здесь