Push Button
Connect signals attached to push buttons on hardware board
- Library:
SoC Blockset / Hardware Logic I/O
Description
The Push Button block controls the hardware mechanism. The hardware logic signals connected to a Push Button block are equivalent to the signals connected to the push buttons on the hardware board.
Ports
Input
PBInx — Input signal
Boolean scalar
xInput signal to control the hardware logic. Using these ports, you can dynamically
control the hardware logic during simulation at run time. Each push button has a port,
named PBIn1 to
PBInx, where
x is Number of push buttons.
Dependencies
To enable this port, set the Specify push buttons via
parameter to InputPort.
Data Types: Boolean
Output
PBx — Output signal
Boolean scalar
xOutput signal that returns the state of the push button. Each push button has a
port, named PB1 to
PBx, where
x is Number of push buttons.
Data Types: Boolean
Parameters
Hardware board — View selected hardware
None (default) | Supported Xilinx® or Intel ® boards | Custom boards
This parameter is read-only. To choose a hardware board and configure board parameters, see Hardware Implementation Pane.
View push buttons location — View push buttons
button
To view a diagram of the location of the push buttons on the selected hardware board, click the View push buttons location button.
This button is enabled only when you select specific Xilinx or Intel boards. For more information about these boards, refer to Supported Third-Party Tools and Hardware.
IO logic — IO logic indicator
None (default) | Active High | Active Low
This parameter is read-only. Indicates the IO logic level on the selected hardware board.
When the IO logic parameter is shown as Active
Low, the Push Button block accepts and outputs active low
signals when you set the Specify push buttons via parameter to
InputPort and outputs active low signals when you set the
Specify push buttons via parameter to
Dialog. The block represents these port names prefixed with
letter n. For example, nPB1.
Specify push buttons via — Push-button source
Dialog (default) | InputPort
To control the hardware logic by using the block parameters, select
Dialog. To control the hardware logic from the input port,
select InputPort.
Number of push buttons — Push-button selection
1 (default) | list of integers in the range [1, n]
To specify the required number of push-button ports, select a value from the
Number of push buttons list. n
represents the number of available push buttons on the specified hardware board. For
example, if you select 3 from the list, the block shows three
push-button ports.
To use only the nth push button, set the Number
of push buttons parameter to n and terminate the
unused push button ports.
PBn — Selected push buttons
Off (default) | On
nTo enable the nth push-button port, select
On for the PBn parameter.
n represents the number of available push buttons on the
specified hardware board.
Dependencies
To enable this parameter, set the Specify push buttons via
parameter to Dialog.
Sample time — Sampling interval
-1 (default) | positive scalar
Specify the time interval a push button toggles between On and
Off.
Extended Capabilities
HDL Code Generation
Generate Verilog and VHDL code for FPGA and ASIC designs using HDL Coder™.
To automatically generate HDL code for your design, and execute on an SoC device, use the SoC Builder tool. See Generate SoC Design.