Assemble Code to Flash a LED

Assembly of the code converts the assembly instructions to machine language which the computer can understand. To complete this step we use a program called MP Lab. The following steps are required.

• You must create a project file. Note that the name of the project file, the name of the directory, the name of the assembler file and the name of the hex file created should be identical except for the extension to the file name.
• You must tell the program which PIC Microchip you are using.
• You must build and save the project.

To complete these steps follow the instructions below;

• It is assumed that you have your basic code and assembler code in a directory on your central server and the directory and the code have the same name.
• Open MP Lab on a pc.
• Menu, Project - select New Project
  • The file name should be the same as the file name of the basic and assembler file. This is entered in the top left box, in theis case ledflash.pjt
  • Choose the directory on the central server that you created for the basic and assembler files to be stored in. Make sure the directory that you choose has an open folder icon as shown below. Click ok.
• The Edit Project widow will open.
  • It is necessary to select the correct microchip on this screen. When you click on the change button, the Development Mode window will open. Choose PIC16F84A as the processor. Click apply.
  • Click the Add Node button. The Add Node window will open. Under folders select the folder where your files are located. Then under file name select the assembler file that will be used
  • The edit project window should look like this Click ok.
  • Menu Project, Select Make Project You should get a Build SuccessfulThe hex code is now created.
• Menu, Project - Select Save Project
• Your done.