This is OK, since the P-Star’s configuration bits are set during manufacturing and they cannot be changed using the bootloader. You should see several instances of warnings similar to “warning: (1311) missing configuration setting for config word 0x300000, using default”. This includes all the command-line arguments passed to XC8 to compile the program, and all the output from the compiler.
The “Output” pane should now show the build output from MPLAB X.To compile the code, open the “Production” menu and select “Build Main Project”.Blink the red LED with a period of 0.35 s Blink the yellow LED with a period of 0.7 s Blink the green LED with a period of 1.4 s The instruction speed is 12 MHz, this overflows about every 1.4 * Enable Timer 0 as a 16-bit timer with 1:256 prescaler: since Copy and paste the following code into main.c:.Choose a file name like “main” and then click Finish.This should create a new file named “main.c” and open it for editing.Then right-click on “Source Files”, select “New”, and then select “C Source File…”. Left-click the “+” sign next to “Source Files” to expand it and verify that your project has no source files yet. If the “Projects” pane is not visible, you can open it by opening the “Window” menu and selecting “Projects”. Now we need to create the C source file.In the “Codeoffset” box enter 0x2000, which is 8*1024 in hex. In the “XC8 linker” category, select the “Additional options” sub-category. In the “File” menu, select “Project Properties”. We need to configure the project’s linker setting to properly account for the P-Star’s bootloader, which takes up the first 8 KB of flash memory.For the Project Name, choose something like “p-star1”, and choose the folder you want it to be in.On the “Select Tool” screen, you can select “PICkit 3” but this choice does not matter because we will not use MPLAB X to the load the program onto the board.For the Device, type the name of the microcontroller on your P-Star, which is either “PIC18F25K50” or “PIC18F45K50”.On the first screen of the New Project wizard, select the “Microchip Embedded” category and then select “Standalone Project”.
From the File menu, select “New Project”.Find “MPLAB X IDE” in your Start Menu and run it.Download and install the latest versions of MPLAB X and XC8.Both programs run on Windows, Max OS X, and Linux. XC8 is a C compiler from Microchip for 8-bit PICs. MPLAB X a free integrated development (IDE) from Microchip for programming their PIC microcontrollers. This section explains how to get started programming the P-Star in the C language using MPLAB X and XC8. The P-Star can be programmed using standard development tools from Microchip.
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