Calculator

In this project, we will use a gen4 uLCD-28DT and make use of the integer calculation and floating point emulation capabilities of the 4D Diablo processor. With that module we can make a calculator! We can enter the numbers using the touchpad and display the result on the LCD display.

How it works

Step 1: Implementation

• If you are using gen4-IB and μUSB PA-5, connect the display to your computer as shown in the image below.

• If you are using gen4-PA board, connect the display to your computer as shown in the image below.

Step 2: Program

• Download the project file here.

• You can download Workshop 4 IDE and the complete code for this project from our website.

• Open the project using Workshop 4. This project uses the ViSi Environment.

• You can modify the properties of each widget.

Step 3: Compile

• Click on the Compile button.

Note: This step could be skipped. However, compiling is essential for debugging purposes.

Step 4: Comp’n Load

• Connect the display to the PC using μUSB-PA5 and a mini USB cable. Make sure that you are connected to the right port. The red button indicates that the device is not connected and the blue button indicates that the device is connected to the right port.

• Now click on the “Comp’nLoad” button.

• Workshop 4 will prompt you to select a drive to copy the image files to a μSD Card. After selecting the correct drive, click OK.

Step 5: Mount μSD Card

• The module will prompt you to insert the μSD card.

• Properly unmount the μSD Card from the PC and insert it to the μSD Card slot of the display module. The image below must appear on your display after completing the steps above.

Demo

Operand 1 multiply with:

Operand 2

Decimal Product of 7 times 8:

Result in Binary