Write1WireBit

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Write1WireBit

VERSION 1.46+ of the firmware, VERSION 58+ of the DLL

Description:

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

Command Syntax: (USBm.dll)

USBm_Write1WireBit(device, data )

The USBm_Write1WireBit function syntax has these parts:

Part	Description
device	A zero-based index to address the appropriate USB device.
data	Bit to write to bus (00h or 01h).

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.

VB Declaration

Public Declare Function USBm_Write1WireBit _
    Lib "USBm.dll" _
        (ByVal device As Byte, _
               ByVal data As Byte)_
As Integer

VB Example

USBm_Write1WireBit 3, 1

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

C Prototype

int USBm_Write1WireBit (unsigned char device, unsigned char data);

C Example

USBm_Write1WireBit ( 3, 1 );

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

Hardware: U401 USB Interface U421 USB Interface

Programming: USBm DLL Programming Download Files

Application Notes: U4x1 Application Notes Misc Applications and Information FAQ