Online Development Notebook > Index > Programming Overview > Device Commands > Write1Wire

Write1Wire - Write a byte to a 1-wire bus⁄device

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VERSION 1.30+ of the firmware, VERSION 36+ of the DLL

Description:

This is a function to send a 1-wire (MicroLAN) byte write on the previously selected port pin.

Command Syntax: (USBm.dll)

USBm_Write1Wire( device, data )

The USBm_Write1Wire function syntax has these parts:

Remarks:

This command does not set the port direction pins or select the pin to use as the 1-wire bus - it is the Reset1Wire command that does this.

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VB Declaration

Public Declare Function USBm_Write1Wire _     Lib "USBm.dll" _         (ByVal device As Byte, _                ByVal data As Byte)_   As Integer

VB Example

USBm_Write1Wire 3, 9

This code fragment addresses U4x1 device #3, and writes the value of 9 on the 1-wire bus (line to use previously selected by the Reset1Wire command).

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C Prototype

int USBm_Write1Wire ( unsigned char device, unsigned char data );

C Example

USBm_Write1Wire ( 3, 9 );

This code fragment addresses U4x1 device #3, and writes the value of 9 on the 1-wire bus (line to use previously selected by the Reset1Wire command).

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RobotBASIC

usbm_Write1Wire(ne_DeviceNumber,ne_Data)

Returns true if successfull, false otherwise. Writes a byte to the 1wire device.

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Raw Command

See Write1WireBit

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Hardware:  U401 USB Interface    U421 USB Interface   U451 USB Interface

Programming:  USBm DLL Programming    Download Files

Application Notes:  U4x1 Application Notes    Misc Applications and Information    FAQ

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