Configuring the I/O pins

Open the ULINKplus dialog View - Analysis Windows - ULINKplus.

I/O Dialog The I/O section shows how the I/O pins are configured:

Pin - Displays the pin number
Function - Displays the current function set that is applied to the I/O
Out - If the function is "Digital Output", you can set the output to high by checking the box. Otherwise the output is low. For Pin 7, when configured for Analog Output, the pin voltage displays.
In - Displays the current I/O voltage level if configured to "Digital Input"

Command window

The I/O pins are configured, accessed and controlled using ULINK Virtual Simulation Registers (VTREGs). The I/O VTREGs are defined below:

VTREG	Type	Description
Mode setup
ULINK_DIR	integer	Set input or output direction. Bit clear = input, bit set = output
ULINK_AMODE	integer	Set digital or analog function. Bit clear = digital I/O, bit set = analog I/O
Digital I/O
ULINK_IN	integer	Reads digital input pins (also returns the physical level on output pins)
ULINK_OUT	integer	Sets digital output pins (pins configured as input with ULINK_DIR are not affected)
Analog I/O
ULINK_AINn	float	Voltage level at analog input. n=4..7, requires pin configuration for analog input
ULINK_AOUT7	float	Voltage level at analog output, requires pin configuration for analog output
ULINK_3V3	integer	Turns +3.3V Out pin on or off. 1=On, 0=Off