mplab c18 c compiler getting started - Computer & Information Science

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MPLAB ® C18 C Compiler Getting Started 4.2.4 Test Program 1 Use Project>Build All or the equivalent icon to build the project. After a successful build, the Run icon becomes blue, indicating that the program is halted and ready to run. Select the Run icon and it turns gray, indicating it is running. The Halt icon turns blue, indicating the program is running and can be halted. In addition, on the status bar at the bottom is a “Running...” indicator. Select the Halt icon and open the Output window if it is not already open (Figure 4-3). FIGURE 4-3: OUTPUT WINDOW: “HELLO, WORLD!” The text, “Hello, world!”, should appear in the SIM Uart1 tab of the Output window. Select the Reset icon to reset the program, and then select the Run icon again to print the message a second time in the Output window. Note: After “Hello, world!” prints out, the program continues executing, running in an endless while (1) loop until it is halted. If Run is executed immediately after halting, the endless loop resumes running. In order to re-execute the program from the beginning, select the Reset icon after the program is halted. DS51295F-page 42 © 2005 Microchip Technology Inc.
4.2.5 Resolve Problems Beginning Programs If a mistype caused an error when building the project, the last lines in the Output window may look like Figure 4-4: FIGURE 4-4: OUTPUT WINDOW SYNTAX ERROR Double click on the line with “syntax error” to bring up the MPLAB Editor window with the cursor on the line with the syntax error (Figure 4-4). An error that reads “could not find stdio.h” usually means that the include path is not set up. Refer to Section 3.7 “Verify Installation and Build Options” for information on setting up the include path. A warning that reads “type qualifier mismatch in assignment” may mean that the large memory model is not selected when using standard I/O. Refer to Section 4.2.3 “Set Memory Model”. An error that “c018i.o is not found” could mean that the library path is not set up correctly. Refer to Section 3.7 “Verify Installation and Build Options” for information on setting up the library path If a message says it can not find a definition of “main” in c018i.o, make sure “main” is spelled all lower case since C is case-sensitive. An error that reads “could not find definition of symbol...” is usually caused by using the wrong linker script: Make sure that the 18F452.lkr file in the mcc18\lkr directory is used. MPLAB IDE also has a linker script for assembler-only projects in one of its subdirectories. Always use the mcc18\lkr linker scripts for all projects using the MPLAB C18 compiler. If “Hello, world!” does not appear in the Output window, try these steps: 1. Make sure that the simulator is selected (Debugger>Select Tool>MPLAB SIM). 2. Make sure the Uart1 is enabled to send printf() text to the MPLAB IDE Output window as shown in Figure 3-15. 3. Select the Halt icon (Figure 3-16). 4. Build All again. There should be no errors in the Output window, and the message “Build Succeeded” should appear as the last line (Figure 3-13). 5. Select the Reset icon on the Debug Toolbar (Figure 3-16). 6. Select the Run icon on the Debug Toolbar (Figure 3-16). Note: To clear the Output window, right click the mouse button and select the Clear Page option. © 2005 Microchip Technology Inc. DS51295F-page 43
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 43 and 44: 4.1 INTRODUCTION MPLAB ® C18 C COM
Page 45: 4.2.3 Set Memory Model 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
Page 99 and 100:
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
Page 107 and 108:
There are two ways to resolve this
Page 109 and 110:
Troubleshooting FAQ-12 How do I cop
Page 111 and 112:
Glossary MPLAB ® C18 C COMPILER GE
Page 113 and 114:
Glossary Compiler A program that tr
Page 115 and 116:
Glossary External Symbol Resolution
Page 117 and 118:
Glossary ISO See International Orga
Page 119 and 120:
Glossary MPLAB SIM Microchip’s si
Page 121 and 122:
Glossary Project A set of source fi
Page 123 and 124:
Glossary Static RAM or SRAM Static
Page 125 and 126:
Symbols #pragma Directive..........
Page 127 and 128:
NOTES: Index © 2005 Microchip Tech
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