Digital IO Control

The camera is equipped with a 6-pin GPIO connector. The connector is a JST BM06B-NSHSS-TBT (LF)(SN), the mating connector is a JST NSHR-06V-S.


Note: Diagram is for reference only. Actual number of pins is 6.

Color Pin Line Function Description Parameters Min Max Unit
Orange 1 0 GPIO0 Non-isolated Input/Output Input Low Level 0 1.4 V
Input High Level 2.6 24 V
Propagation Delay   1 µs
Output Low Current   25 mA
Output High Level 0 24 V
Black 2 1 GPIO1 Non-isolated Input/Output Input Low Level 0 1.4 V
Input High Level 2.6 24 V
Propagation Delay   1 µs
Output Low Current   25 mA
Output High Level 0 24 V
White 3 2 GPIO2 Non-isolated Input/Output Input Low Level 0 1.4 V
Input High Level 2.6 24 V
Propagation Delay   1 µs
Output Low Current   25 mA
Output High Level 0 24 V
Green 4 3 GPIO3 Non-isolated Input/Output Input Low Level 0 1.4 V
Input High Level 2.6 24 V
Propagation Delay   1 µs
Output Low Current   25 mA
Output High Level 0 24 V
Brown 5 N/A GND Camera Power Ground        
  Red   6 N/A   Vout   Camera Power Output Output Voltage 3.05 3.35 V
Output Current   120 mA

This section describes how to configure the camera's general purpose digital input and outputs (sometimes referred to as GPIO).

Use LineSelector to choose which of the 4 lines to configure. All the features listed beneath it are controllable on a per line basis.

Use Line Mode to control the direction - either Input or Output - of the selected I/O line.

Use 3.3V Enable to supply external circuits with power. This is different than standard logic outputs in that it is comparatively slow to switch but can supply a more significant amount of power. This is only available on some pins.

Use LineInverter to control a logic inverter on the selected line.

LineStatus indicates the current status of the selected line. A checked status (enabled) indicates logic high. An unchecked status (disabled) indicates logic low. Since this node must be polled to get its status it should not be used as a real time control for reading internal signals.

LineStatusAll is a hexadecimal representation of all the line status bits (Line 0 status corresponds to bit 0, Line 1 status with bit 1, etc). This allows simultaneous reading of all line statuses at once.

Use the LineInputFilterSelector to choose a filter. Filters are unique per line. Use LineFilterWidth to set the width of the filter in microseconds. There are two choices of filter:

Deglitch - designed to filter out any noise or other spurious signals on the line, it does not consider the state to have transitioned until after the Filter Width time has expired. This means that Deglitch introduces a delay in the signal.

Debounce - designed to filter out rapid connecting and disconnecting common in mechanical switches. This means that Debounce considers the first edge as valid and won't allow a subsequent change of state until after the debounce time has elapsed.

Note: The Deglitch filter is applied before Debounce filter.

Use LineSource to control what signal is output on the line when the Line Mode is set to output. The choices are:

Other Lines - creates a loop back

User Outputs - outputs user controllable internal signals

Counter Active - shows when a counter is in use

Logic Blocks - drives the lines

Exposure Active - indicates when the image sensor is exposing

Frame Trigger Wait - indicates when the camera is ready to accept a new Frame Start trigger

If a User Output is selected as a Line Source, use UserOutputSelector to select which bit to use as internal signals within the camera. Use UserOutputValue to set the selected user output to logic high (enabled) or logic low (disabled).

UserOutputValueAll is a hexadecimal representation of all the user output bits (User Output 0 corresponds to bit 0, User Output 1 with bit 1, etc). Reading or writing User Output Value All allows simultaneous setting or reading of all user outputs at once.

LineFormat is read only and indicates what type of circuit the selected line has. The options for Line Format are:

Tri State - indicates the line is not driven. This is typical for digital inputs.

Opto Coupled - indicates that an opto isolator is being used to isolated the external circuitry from the internal camera electronics.

Open Drain - indicates there is an internal MOSFET that will pull the pin low but requires an external pull up resistor to produce a logic level high signal. This is typical for digital outputs.

Summary Table

Name Interface Access Visibility Description
Line Selector IEnumeration Expert Selects the physical line (or pin) of the external device connector to configure
Line Mode [Line Selector] IEnumeration Expert Controls if the physical Line is used to Input or Output a signal.
3.3V Enable [Line Selector] IBoolean RW Guru Internally generated 3.3V rail. Enable to supply external circuits with power. This is different than standard logic outputs in that it is comparatively slow to switch but can supply a more significant amount of power. This is only available on some pins.
Line Inverter [Line Selector] IBoolean RW Expert Controls the inversion of the signal of the selected input or output line.
Line Status [Line Selector] IBoolean RO Expert Returns the current status of the selected input or output Line
Line Status All IInteger RO Expert Returns the current status of all the line status bits in a hexadecimal representation (Line 0 status corresponds to bit 0, Line 1 status with bit 1, etc). This allows simultaneous reading of all line statuses at once.
Input filter Selector [Line Selector] IEnumeration Expert Selects the kind of input filter to configure: Deglitch or Debounce.
Line Filter Width [Input filter Selector] IFloat Expert Filter width in microseconds for the selected line and filter combination
Line Source [Line Selector] IEnumeration Expert Selects which internal acquisition or I/O source signal to output on the selected line. LineMode must be Output.
Line Format [Line Selector] IEnumeration RO Expert Displays the current electrical format of the selected physical input or output Line.
User Output Selector IEnumeration Expert Selects which bit of the User Output register is set by UserOutputValue.
User Output Value [User Output Selector] IBoolean RW Expert Value of the selected user output, either logic high (enabled) or logic low (disabled).
User Output Value All IInteger Expert Returns the current status of all the user output status bits in a hexadecimal representation (UserOutput 0 status corresponds to bit 0, UserOutput 1 status with bit 1, etc). This allows simultaneous reading of all user output statuses at once.

Digital IO Control Features


Line Selector

Selects the physical line (or pin) of the external device connector to configure

Property Value
Name LineSelector
Interface IEnumeration
Access
Visibility Expert

Enumeration Values
Line0
Line1
Line2
Line3

Line Mode

Controls if the physical Line is used to Input or Output a signal.

Property Value
Name LineMode [Line Selector]
Interface IEnumeration
Access
Visibility Expert

Enumeration Values
Input
Output

3.3V Enable

Internally generated 3.3V rail. Enable to supply external circuits with power. This is different than standard logic outputs in that it is comparatively slow to switch but can supply a more significant amount of power. This is only available on some pins.

Property Value
Name V3_3Enable [Line Selector]
Interface IBoolean
Access RW
Visibility Guru

Line Inverter

Controls the inversion of the signal of the selected input or output line.

Property Value
Name LineInverter [Line Selector]
Interface IBoolean
Access RW
Visibility Expert

Line Status

Returns the current status of the selected input or output Line

Property Value
Name LineStatus [Line Selector]
Interface IBoolean
Access RO
Visibility Expert

Line Status All

Returns the current status of all the line status bits in a hexadecimal representation (Line 0 status corresponds to bit 0, Line 1 status with bit 1, etc). This allows simultaneous reading of all line statuses at once.

Property Value
Name LineStatusAll
Interface IInteger
Access RO
Unit
Visibility Expert

Input filter Selector

Selects the kind of input filter to configure: Deglitch or Debounce.

Property Value
Name LineInputFilterSelector [Line Selector]
Interface IEnumeration
Access
Visibility Expert

Enumeration Values
Deglitch
Debounce

Line Filter Width

Filter width in microseconds for the selected line and filter combination

Property Value
Name LineFilterWidth [Input filter Selector]
Interface IFloat
Access
Unit us
Visibility Expert

Line Source

Selects which internal acquisition or I/O source signal to output on the selected line. LineMode must be Output.

Property Value
Name LineSource [Line Selector]
Interface IEnumeration
Access
Visibility Expert

Enumeration Values
Off
Line0
Line1
Line2
Line3
UserOutput0
UserOutput1
UserOutput2
UserOutput3
Counter0Active
Counter1Active
LogicBlock0
LogicBlock1
ExposureActive
FrameTriggerWait
AllPixel
AnyPixel
SerialPort0

Line Format

Displays the current electrical format of the selected physical input or output Line.

Property Value
Name LineFormat [Line Selector]
Interface IEnumeration
Access RO
Visibility Expert

Enumeration Values
NoConnect
TriState
TTL
LVDS
RS422
OptoCoupled
OpenDrain

User Output Selector

Selects which bit of the User Output register is set by UserOutputValue.

Property Value
Name UserOutputSelector
Interface IEnumeration
Access
Visibility Expert

Enumeration Values
UserOutput0
UserOutput1
UserOutput2
UserOutput3

User Output Value

Value of the selected user output, either logic high (enabled) or logic low (disabled).

Property Value
Name UserOutputValue [User Output Selector]
Interface IBoolean
Access RW
Visibility Expert

User Output Value All

Returns the current status of all the user output status bits in a hexadecimal representation (UserOutput 0 status corresponds to bit 0, UserOutput 1 status with bit 1, etc). This allows simultaneous reading of all user output statuses at once.

Property Value
Name UserOutputValueAll
Interface IInteger
Access
Unit
Visibility Expert