mplab c18 c compiler getting started - Computer & Information Science

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MPLAB ® C18 C Compiler Getting Started NOTES: DS51295F-page 38 © 2005 Microchip Technology Inc.
4.1 INTRODUCTION MPLAB ® C18 C COMPILER GETTING STARTED Chapter 4. Beginning Programs It is assumed that the reader is familiar with MPLAB projects. A quick overview is available in Chapter 3. “Project Basics and MPLAB IDE Configuration”. A more thorough description is in the MPLAB ® IDE User’s Guide. The following sections present three beginning programs to familiarize the engineer or student with MPLAB C18 C Compiler using the MPLAB Integrated Development Environment. Program 1: “Hello, world!” – prints the text “Hello, world!” Program 2: Light LED Using Simulator – writes to an I/O pin on a simulated PIC18 device to turn on an indicator light. Program 3: Flash LED Using Simulator – extends the second program to flash the light on and off. Using the Demo Board – demonstrates how to test using a demo board. If MPLAB ICD 2 and development hardware are available, the previous program will be compiled to be debugged under MPLAB ICD 2 with the development board to flash real LEDs. 4.2 PROGRAM 1: “HELLO, WORLD!” 4.2.1 Write the Source Code The typical “Hello, world!” function contains this C statement to print out a message: printf ("Hello, world!\n"); The function main() is written like Example 4-1: EXAMPLE 4-1: HELLO, WORLD! main() CODE void main (void) { printf ("Hello, world!\n"); } while (1) ; Note: Often, the final “while (1)” statement is not used for the “Hello, world!” program because the example compiles on a PC, executes, then returns back to the operating system and to other tasks. In the case of an embedded controller, however, the target microcontroller continues running and must do something, so in this example, an infinite loop keeps the microcontroller busy after doing its single task of printing out “Hello, world!”. © 2005 Microchip Technology Inc. DS51295F-page 39
Page 1 and 2: MPLAB ® C18 C COMPILER GETTING STA
Page 3 and 4: Table of Contents MPLAB ® C18 C CO
Page 5 and 6: INTRODUCTION Preface NOTICE TO CUST
Page 7 and 8: CONVENTIONS USED IN THIS GUIDE This
Page 9 and 10: C LANGUAGE AND OTHER TEXTBOOKS Pref
Page 11 and 12: THE MICROCHIP WEB SITE Preface Micr
Page 13 and 14: 1.1 INTRODUCTION Chapter 1. Overvie
Page 15 and 16: 1.3 SYSTEM REQUIREMENTS Overview Th
Page 17 and 18: 1.5 ABOUT THE LANGUAGE TOOLS Overvi
Page 19 and 20: 2.1 INTRODUCTION Chapter 2. Install
Page 21 and 22: 2.2.3 Readme File Installation The
Page 23 and 24: 2.2.5 Select Components Installatio
Page 25 and 26: 2.2.6 Configuration Options Install
Page 27 and 28: 2.2.7 Documentation Notice Installa
Page 29 and 30: MPLAB ® C18 C COMPILER GETTING STA
Page 31 and 32: Project Basics and MPLAB IDE Config
Page 41: Project Basics and MPLAB IDE Config
Page 45 and 46: 4.2.3 Set Memory Model Beginning Pr
Page 47 and 48: 4.2.5 Resolve Problems Beginning Pr
Page 49 and 50: Beginning Programs This example wil
Page 51 and 52: Beginning Programs 4.3.4.2 USING TH
Page 53 and 54: 4.4 PROGRAM 3: FLASH LED USING SIMU
Page 55 and 56: 4.4.3 Set Breakpoints Beginning Pro
Page 57 and 58: 4.4.5 Analyze Program 3 Beginning P
Page 59 and 60: 4.5 USING THE DEMO BOARD Beginning
Page 61 and 62: Beginning Programs They are probabl
Page 63 and 64: 5.1 OVERVIEW Chapter 5. Features MP
Page 65 and 66: Features Enable integer promotions
Page 67 and 68: 5.2.3 Optimization Options Features
Page 69 and 70: Features Use File>New to create a n
Page 71 and 72: 5.3.3 Turn Off Optimizations Featur
Page 73 and 74: Features Click Step Over again to g
Page 75 and 76: Features Continuing the Step Over o
Page 77 and 78: Features Rebuild the project with t
Page 79 and 80: Features FIGURE 5-25: OPTIMIZATION
Page 81 and 82: Features This sample code (Example
Page 83 and 84: 5.4.2 Arrays Features Arrays are di
Page 85 and 86: Features Make a project (Figure 5-3
Page 87 and 88: Features Create a new project calle
Page 89 and 90: The arrays can be expanded to show
Page 91 and 92: Features Rebuild the project with P
Page 93 and 94:
6.1 INTRODUCTION Chapter 6. Archite
Page 95 and 96:
Architecture These are some importa
Page 97 and 98:
6.2.3 Special Function Registers Ar
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Architecture When porting code from
Page 101 and 102:
6.6 SFRS, TIMERS SW/HW Architecture
Page 103 and 104:
7.1 INTRODUCTION Chapter 7. Trouble
Page 105 and 106:
7.3 FREQUENTLY ASKED QUESTIONS (FAQ
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There are two ways to resolve this
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Troubleshooting FAQ-12 How do I cop
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Glossary MPLAB ® C18 C COMPILER GE
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Glossary Compiler A program that tr
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Glossary External Symbol Resolution
Page 117 and 118:
Glossary ISO See International Orga
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Glossary MPLAB SIM Microchip’s si
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Glossary Project A set of source fi
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Glossary Static RAM or SRAM Static
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Symbols #pragma Directive..........
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NOTES: Index © 2005 Microchip Tech
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