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Table of Contents

SPI Open Master

Open the specified SPI channel.

LabVIEW

Developer Note

Command Packet

  • SPI Open Command
  • SPI Open Response
    • SPI Open Command
    Description Open the specified SPI channel.
    Size Variable
    Format
    0
    1
    2
    3
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    SoF : 0xFF
    PACKET SIZE
    PACKET NUM
    4
    5
    6
    7
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    CMD : 0x0100
    CHANNEL
    CHECKSUM
    SoF Start of Frame. Always 0xFF.
    PACKET SIZE Packet Size In Bytes
    PACKET NUM The Current Packet Number. This value increments with each new packet.
    CMD SPI Open Command.
    CHANNEL SPI channel to open.
    CHECKSUM Checksum. Computed by adding all of the bytes in the packet in U8 form ignoring rollover.

    LINX Target

    Developer Note

    Response Packet

    SPI Open Response
    Description LINX device's response to SPI Open command
    Size 6 Bytes
    Format
    -
    -
    0
    1
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    N/A
    SoF : 0xFF
    PACKET SIZE
    2
    3
    4
    5
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    7
    6
    5
    4
    3
    2
    1
    0
    PACKET NUM
    STATUS
    CHECKSUM
    SoF Start of Frame. Always 0xFF.
    PACKET SIZE Total packet size in bytes.
    PACKET NUM The packet number of the packet that generated the response.
    STATUS See Return Status section below.
    CHECKSUM Checksum. Computed by adding all of the bytes in the packet in U8 form ignoring rollover.

    Return Status

    No function specific statuses. See return_status for universal return statuses.

    linx

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