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PICDEM? PIC18 Explorer Demonstration Board User’s Guide
2.4
PROGRAMMING THE MICROCONTROLLERS
Either or both the main microcontroller (PIC18F8722) and the RS-232 to USB, or the
PIC18LF2450 microcontroller, can be reprogrammed. The main microcontroller that is
reprogrammed can either be the board-mounted PIC18F8722 device or an alternate
main microcontroller, mounted on a PIM attached to the board.
This section discusses:
2.4.1
Programming Requirements
To reprogram a sample device, the following is required:
? Program source code – Sample code is preloaded on the device, but user source
code can be substituted.
If this is done, the sample program can be restored using the file on the board kit’s
CD-ROM.
? An assembler or compiler – Source code must be assembled or compiled into a
Hex file before it can be programmed into the device.
? A programmer – Once the code is in the Hex file format, this device programs the
microcontroller ’s Flash memory.
If the code protection bit(s) have not been programmed, the on-chip program
memory can be read out for verification purposes.
In meeting these requirements:
? Code development and debugging –
The free MPLAB ? IDE software development tool includes a debugger and sev-
eral other software tools as well as a unified graphical user interface for working
with other Microchip and third-party software and hardware tools.
? Assembler –
The free MPLAB IDE tool includes the MPASM? assembler.
? Compiler –
Microchip’s MPLAB ? C18 is a C compiler for PIC18 microcontrollers and is fully
integrated for the MPLAB IDE environment.
? Programmer –
Microchip’s MPLAB ? In-Circuit Debugger (ICD) 2 or PICkit? Starter Kit can be
used to program the device and both are fully integrated for the MPLAB IDE
environment.
The free MPLAB IDE tool set and its documentation can be downloaded at
http://microchip.com .
For a list of the other mentioned devices’ documentation, see “Recommended
Other assemblers/compilers can be used. For a list of tools compatible with PIC
microcontrollers, see the Microchip web site (http://microchip.com).
DS51721B-page 16
? 2008 Microchip Technology Inc.
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