SetDTR

Availability All terminals
Description Sets the level of the DTR line of the USB-VCP or USB-CDC COM-port
Syntax void SetDTR( int level );
Arguments
int level
Two values are defined for level:
ON The DTR line is made active.
OFF The DTR line is made inactive.
Returns None
Remarks SetDTR() has no effect when used on other communications ports.
The default state of the DTR line is OFF.
Example 
// The following example demonstrates the use SetDTR() on USB Serial ports

#include <stdio.h>
#include "lib.h"

void main( void )
{
    int key = -1;

    ComOpen( COM9 );     // USB-VCP COM-port

    for(;;)
    {
        printf("\nPress any key");

        ResetKey();

        key = WaitKey();

        SetDTR((key == TRIGGER_KEY) ? ON : OFF);

        Idle();
    }
}