Digital Write Square Wave

Writes a square wave with the specified frequency to the specified DO channel.

LabVIEW

Developer Note

Command Packet

  • Digital Write Square Wave Command
  • Digital Write Square Wave Response
  • Digital Write Square Wave Command
    Description Writes a square wave with the specified frequency to the specified DO channel.
    Size 16 Bytes
    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 : 0x0E
    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 : 0x0043
    CHANNEL
    FREQUENCY
    8
    9
    10
    11
    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
    FREQUENCY
    Duration
    12
    13
    14
    15
    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
    Duration
    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 Digital Write Square Wave Command.
    CHANNEL The DO Channel To Write To
    FREQUENCY U32 Frequency in Hz
    Duration U32 Duration In mS (0 = indefinitely)
    CHECKSUM Checksum. Computed by adding all of the bytes in the packet in U8 form ignoring rollover.

    LINX Target

    Developer Note

    The device firmware is responsible for setting pin direction (input / output). A Freq of 0 should disable the output (noTone() for Arduino API)

    Response Packet

    Digital Write Square Wave Response
    Description LINX device's response to Digital Write Square Wave 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.