User`s guide

A Basic Tutorial for MPLAB IDE

2.8 ADDING FILES TO THE PROJECT

Step Four of the Project Wizard allows file selection for the project. A source file has

not yet been selected, so we will use an MPLAB IDE template file. The template files

are simple files that can be used to start a project. They have the essential sections for

any source file, and contain information that will help you write and organize your code.

There is one template file for each Microchip PICmicro MCU and dsPIC DSC device.

Choose the file named 8722tmpo.asm. If MPLAB IDE is installed in the default

location, the full path to the file will be:

C:\Program Files\Microchip\MPASM Suite\Template\Object\8722tmpo.asm

FIGURE 2-6: PROJECT WIZARD – SELECT TEMPLATE FILE

Press Add>> to move the file name to the right panel, and click on the checkbox at the

start of the line with the file name to enable this file to be copied to our project directory.

Next, add the second file for our project, the linker script. There is a linker script for each

device. These files define the memory configuration and register names for the various

parts. Use the file named 18F8722.lkr. The full path is:

C:\Program Files\Microchip\MPASM Suite\LKR\18F8722.lkr

To copy this linker script into our project, click on the checkbox.

Note: There is also a linker script named 18F8722i.lkr, for use with this device

when MPLAB ICD 2 is being used (hence the “i” in the name). That linker

script reserves areas in memory for MPLAB ICD 2. Since the simulator is

being used, we don’t need to use that linker script.