Count Binary
Count Binary is a simple program that, using an 8-bit variable, repeatedly counts from 0 to FF. The output of this variable is displayed on the LEDs, the seven-segment display, and the LCD. The four buttons (SW0-SW3) control output to these devices in the following manner:
- Button1 (SW0): LED is "counting"
- Button2 (SW1): Seven segment is "counting"
- Button3 (SW2): LCD is "counting"
- Button4 (SW3): All of the peripherals are "counting"
Upon completion of "counting," there is a short waiting period during which button/switch presses are identified on STDOUT.
Note: These buttons have not been de-bounced, so one button press may cause multiple notifications to STDOUT.
Using This Design Example
To obtain this design example, download a free evaluation version of the Nios® II Embedded Design Suite (EDS). This embedded software example is installed with the Nios II EDS in the <Nios II EDS installation path>/examples/software directory and is available as a Nios II integrated development environment (IDE) project template. The template includes the project settings required to run this design on the supported target hardware configurations. To use this software example, simply create a new C/C++ application project in the IDE and choose the desired project template.
Hardware Requirements
This example requires the following devices to be present in the target hardware design:
- LED programmable I/O (PIO) named
led_pio
- Seven-segment display PIO named
seven_seg_pio
- LCD display named
lcd_display
- Button PIO named
button_pio
- UART Joint Test Action Group (JTAG) or standard serial
You can run this software design example on the following Nios II hardware design examples:
Stratix® and Stratix II Design Examples
Cyclone® Design Examples
Related Links
For more information about using this example in your project, go to:
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These Web Site Design Examples may be used within Altera® Corporation devices only and remain the property of Altera. They are being provided on an "as-is" basis and as an accommodation, and therefore all warranties, representations, or guarantees of any kind (whether express, implied or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
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