Chapter%201%20The%20First%20Flight

1
Chapter 1 The First Flight

• Creating the first project and saying Hello to
  the World

2
Checklist

• The following tools will be used throughout the
  course
• MPLAB X, Integrated Development Environment (v1.8
  or later, free)
• MPLAB XC16, C compiler (v1.11 or later, free)
• The following pieces of documentation will be
  used during this lesson
• PIC24FJ128GA010 Datasheet DS39747 (latest rev.)
• PIC24 Family Reference Manual - Section 12. I/O
  Ports
• Make sure they are available and/or installed and
  ready to use on your computer.
• You can download them from Microchip web site at
  http//www.microchip.com/mplabx
• And http//www.microchip.com/xc16

3
Creating the First Project

• Use the New Project wizard

4
New Project Wizard step 2

• Select the PIC24 model

5
New Project Wizard step 3

• No Header is required

6
New Project Wizard step 4

• Select the programmer/debugger of choice
• ICD3
• PICKit3
• Real ICE
• ...

7
New Project Wizard step 5

• Select the XC16 compiler (and version)

8
New Project Wizard step 6

• Define the project location (folder) and assign
  the Project Name

9
New File Wizard

• Use the New File wizard to create a new main file
  from a Microchip Embedded template

10
New File Wizard Alternate step1

• Use the New File wizard to create a new empty
  file

11
New File Wizard step 2

• Assign the name Hello1.c

12
The Plan

• The first project with MPLAB X IDE
• The project window
• The editor
• The output window
• A first statement
• A first complete program
• Controlling I/Os Ports and Pins
• Building the project
• The first debugging experience
• Hello World!

13
The First Program Hello1.c

• / File Hello1.c
• Author your name here Created current
  date here /
• include ltxc.hgt
• int main( void)
• return 0

Replaces previously used include ltp24Fxxxx.hgt
14
Whats in ltxc.hgt

• After a selection based on the PIC24 model you
  chose for your project, you will find the
  definitions of the program counter and other
  special-function registers of the
  microcontroller
• ...
• extern volatile unsigned int PCL
  __attribute__((__sfr__))
• extern volatile unsigned char PCH
  __attribute__((__sfr__))
• extern volatile unsigned char TBLPAG
  __attribute__((__sfr__))
• extern volatile unsigned char PSVPAG
  __attribute__((__sfr__))
• extern volatile unsigned int RCOUNT
  __attribute__((__sfr__))
• extern volatile unsigned int SR
  __attribute__((__sfr__))
• ...

15
Meet the Project Window

• It contains a logical grouping of all the files
  that belong to the project
• Note Like most MPLAB X windows, it can be free
  floating or docked!

right-click here to dock the window
16
Meet PORTA

• /
• Hello Embedded World
• Hello1.c my first PIC24 program in C
• /
• include ltxc.hgt
• int main( void)
• PORTA 0xff
• return 0

dont forget the semicolon!
17
Building the Project

• There are several ways to achieve the same result
  in MPLAB X, select
• Run gt Build Project
• Will compile all new and changed source files
• Or
• Run gt Clean and Build Project
• Produces a forced recompile of all source files
• Or
• Run gt Run Project
• Will compile all new and changed source files, if
  successful it will also program the part using
  the selected programmer/debugger
• Or
• Use the corresponding buttons in the top toolbar