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PSoC Designer: C Language Compiler User Guide

Draft Version

PSoC Designer

C Language Compiler

User Guide

Revision 1.07

CMS10004A

Last Revised: January 30, 2001

Cypress MicroSystems, Inc.

PSoC Designer: C Language Compiler User Guide

The information contained herein is subject to change without notice.

Acknowledgments

Hanson and AT&T. Reproduced by permission." The assembler/linker is a distant

descendent of Alan Baldwin’s public domain assembler/linker package.

All code used with permission.

Code Compressor

™

Codewright or Multiedit editor

COFF

All Intel products referenced herein are either trademarks or registered

trademarks of Intel Corporation.

1981-1998 Microsoft Corp. as related to Windows

Motorola S19

Page 1 of 47

PSoC Designer: C Language Compiler User Guide

Two Minute Overview

This two-minute overview of

PSoC Designer: C Language Compiler User Guide

was purposefully placed up front for you advanced engineers who are ready to…

(Now we only have a minute and-a-half left.)

Overview

35 seconds

You have the M8C, PSoC

™

Designer, and the C

compiler… This guide provides:

enabling and accessing procedures

instructions for using the C compiler within

PSoC Designer parameters

references for the internal workings of the

compiler (including the supported pre-

processor directives, “#directive”).

Basics

30 seconds

After generating your device configuration, click the

Application Editor icon in the toolbar to access the C

compiler and pre-configured source files.

The source tree of project files appears in the left

frame. The folders can be expanded to reveal the

files. Double-click individual files to open and edit

them in the main window.

Quick

15 seconds

Reference

Click a hyperlink to reference key material:

Notation Standards

Accessing/Enabling the Compiler

Compiler Files

Basics

Functions

Processing Directives (#’s)

Librarian

Status Window Messages

Bottom

Line

10 seconds

The PSoC

™

Designer C Compiler is an “extra” tool

you can use to customize the functionality you desire

into the M8C microprocessor.

Time’s up… Now get to work.

Page 1 of 47

PSoC Designer: C Language Compiler User Guide

Documentation Conventions

Following, are easily identifiable conventions used throughout the PSoC

Designer suite of product documentation.

Usage

Times New Roman Size 10-12

Displays an input command:

iasm8c -g

Courier New Size 10

Convention

Displays output:

--- 000AREA

0000

0002

0004

0006

8033

8031

801F

801E

Created by PSoC Designer

from template BOOT.ASM

Boot Code, from Reset

Change this file at your own risk!

TOP(ABS)

org

jmp

__start

Interrupt0

Interrupt1

Displays data types:

Courier Size 12

Italics

[Ctrl] [C]

File >> Open

Displays file locations:

c:\Program Files\Cypress

MicroSystems\PSoc Designer\tools

Displays file names:

projectname.rom

Displays keyboard commands:

[Enter]

Displays menu paths:

Edit >> Cut

Page 2 of 47

PSoC Designer: C Language Compiler User Guide

Notation Standards

Following, are notation standards used throughout the PSoC Designer suite of

product documentation.

Internal Registers:

Notation

expr

Description

Primary Accumulator

Carry Flag

Expression

Flags (ZF, CF, and Others)

Operand 1 Value

Operand 2 Value

{PCH,PCL}

Stack Pointer

X Register

Zero Flag

Virtual Registers:

Virtual registers _r0, _r1, _r2, _r3, _r4, _r5, _r6, _r7, _r8, _r9,

_r10, _r11, _rX, _rY occupy 14 bytes of RAM. These locations are used for

temporary data when using the C language compiler. Currently, these virtual

memory register locations are allocated even if the source for the M8C in PSoC

Designer is written only in assembly language.

Underscore _ Call:

Standard to PSoC Designer C Compiler and Assembler, an

underscore is implicitly added to ’C’ functions and variables. This should be

applied when declaring and referencing functions and variables between ’C’ and

assembly source. For example, take a ’C’ function defined with a prototype like

"void foo();". You would use "call _foo" in M8C assembly to call the ’C’ function.

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