Developing/Programming

PalmOS Applications

CS449Introduction to Systems Software

Palm Application Development & GUI Programming

C Program

hello.cSayHello( MainForm );

Palm Resource file (GUI Elements)

hello.rcpFORM ID MainForm AT (0 0 160 160)USABLEBEGIN TITLE "Hello World"END

C header file

hello.h#define MainForm 1000

hello .prcPalmOS executable

Palm Resource file (GUI Elements)

• Forms

• Alerts

• Menus

• Tables

• Lists/Popup

• Buttons

• Push buttons

• Check boxes

• Sliders, scrollbars

• Labels Look Up:

• Form bitmaps

• TextFields

Compiling & Linking a PalmOS Application (Hello World example)

C source code(hello.c)

C Preprocessor

Header file (hello.h)

(1) C Compiler

m68k-palmos-gcc-c hello.c –o hello.o

C Object code“Motorola 68000 binary code”

m68k-palmos-gcc hello.o -o hello

PalmOS Resource Code (hello.rcp)

(3) PilRC hello.rcpUI Resource Compiler

Convert .rcp to binary formatted

A number of .bin files

Palm Executable

(.prc)

(2) Post-Processor

m68k-palmos-obj-res hello

Separate code Resources

typeXXX.myfile.grc files (type=code, data, pref, rloc)

(4) Build-prcPost-Linker

Combine all objects into a binary .prc Palm executable

build-prc -t appl

-o hello.prc

-n “Hello”

-c *.grc *.bin

Programming Tools

Without IDE (Command-line)

• PRC-tools: m68k-palmos-gcc

(C Compiler)m68k-palmos-obj-res

(gcc Post-Processor)PilRC

(UI Resource Compiler)Build-PRC

(PalmOS Post-Linker)

• Cmd-line debugger

Test/Run executable:

• Simulator• Emulator

• PDA (HotSync)

With IDE (GUI)

Good Environment to:

Edit/Develop Code Build Project Run Step in/out during execution Trace/Report

• Built-in PRC-tools• Built-in Debugger

Test/Run executable:

» Built-in Simulator » Built-in Emulator

» PDA (HotSync)

Cygwin Shell PalmOS Developer Studio

Cygwin Shell

Palm Examples: Hello World Program GUI & Run

PalmOS Developer Studio

Makefile-1

• Script file to automate program compilation and linking (making)

• Makefile is a list of rules and commands:

target : source file(s)command (must be preceded by a tab)

CC=gcc CFLAGS=-g hello: hello.c

$CC $(CFLAGS) -ohello hello.c

Makefile-2

PalmOS Application Makefile

Examples:1.CS Calculator

Example-2: IR Chat Program - Serial Communications using IR/Serial Ports

Example-3: Attack Game - Serial Communications

Example-4: GPad Program - Communicating over a network with TCP/IP

Example-5: VFS Program – Virtual File System

Example-5: VFS Program – Virtual File System

Palm OS Architecture

Hardware

Operating System Kernel

Library (Managers)

Applications

MemoryManager

WindowManager

DatabaseManager

Comm.Manager

VFSManager

User Mode

Kernel Mode

…