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Strona 1 - M3T-MR308/4 V.4.00

M3T-MR308/4 V.4.00User’s ManualREJ10J1025-0200Z Real-time OS for M16C/70,80,M32C/80 Series Rev.2.00 Nov 1, 2005

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vi List of Tables Table 3-1 Task Context and Non-task Context ...- 27 - Table 3-2

Strona 3 - • Users Manual (PDF file)

Chapter 5 Detailed Applications - 90 - 5.9 Memory Allocation This section describes how memory is allocated for the application program data. Use th

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Chapter 5 Detailed Applications - 91 - 5.9.1 Section Allocation of start.a30 The section allocation of the sample startup program for the assembly

Strona 5 - Contents

Chapter 5 Detailed Applications - 92 - 5.9.2 Section Allocation of crt0mr.a30 The section allocation of the sample startup program for the C langua

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Chapter 5 Detailed Applications - 93 - 0FFFFDCH0FFFE00H0FFFD00H0FF0000H000400H000000Hrom_FErom_FOdata_SEIdata_SOIdata_NEIdata_NOIdata_FEIdata_FOISec

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Chapter 5 Detailed Applications - 94 - 5.10 Using in M16C/70 Series When you use M16C/70 series, please be sure to set up the following options.

Strona 8 - List of Figures

Chapter 6 Using Configurator

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Chapter 6 Using Configurator - 96 - 6.1 Configuration File Creation Procedure When applications program coding and startup program modification are

Strona 10 - List of Tables

Chapter 6 Using Configurator - 97 - Table 6.2 Operators Operator Priority Direction of computation () High From left to right - (Unary_minus)

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Chapter 6 Using Configurator - 98 - • 10ms • 10.5ms It is also well to remember that the time must not begin with . (period).

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Chapter 6 Using Configurator - 99 - 6.1.2 Configuration File Definition Items The following definitions 58 are to be formulated in the configuratio

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Chapter 1 User’s Manual Organization

Strona 14 - OS:Operating System

Chapter 6 Using Configurator - 100 - 2. Maximum value of priority (value of lowest priority) [( Definition format )] Numeric value [( Definition ra

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Chapter 6 Using Configurator - 101 - 8. Maximum message priority value [( Definition format )] Numeric value [( Definition range )] 1 to 255 [( De

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Chapter 6 Using Configurator - 102 - [( Definition respective maximum numbers of items )] This definition is to be given only in forming the separat

Strona 17 - 2.3 MR308 Features

Chapter 6 Using Configurator - 103 - 5. The maximum number of semaphores defined [( Definition format )] Numeric value [( Definition range )] 1 to

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Chapter 6 Using Configurator - 104 - [( Task definition )] << Format >> // Tasks Definition task[ ID No. ]{ name = ID name

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Chapter 6 Using Configurator - 105 - 3. User stack size of task [( Definition format )] Numeric value [( Definition range )] 12 or more [( Defau

Strona 20 - 3.1 Concept of Real-time OS

Chapter 6 Using Configurator - 106 - The task startup code of the initial startup task is 0. 8. Extended information [( Definition format )] Numeric

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Chapter 6 Using Configurator - 107 - 3. Initial value of the event flag [( Definition format )] Numeric value [( Definition range )] 0 to 0xFFFF

Strona 22 - Key input

Chapter 6 Using Configurator - 108 - 2. Selecting a semaphore waiting queue [( Definition format )] Symbol [( Definition range )] TA_TFIFO or TA_T

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Chapter 6 Using Configurator - 109 - 2. Number of data [( Definition format )] Numeric Value [( Definition range )] 0 to 0x1FFF [( Default value )

Strona 24 - Real-time OS

Chapter 1 User’s Manual Organization - 2 - The MR308 User’s Manual consists of nine chapters and thee appendix. • Chapter 2 General Information Ou

Strona 25 - Register not stored

Chapter 6 Using Configurator - 110 - 3. Selecting a data queue waiting queue [( Definition format )] Symbol [( Definition range )] TA_TFIFO or TA_T

Strona 26 - 3.2 Service Call

Chapter 6 Using Configurator - 111 - 4. Maximum message priority [( Definition format )] Numeric Value [( Definition range )] 1 to "maximum

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Chapter 6 Using Configurator - 112 - 4. Size (in bytes) [( Definition format )] Numeric value [( Definition range )] 4 to 65,535 [( Default value

Strona 28 - ID number

Chapter 6 Using Configurator - 113 - 3. Section name [( Definition format )] Symbol [( Definition range )] None [( Default value )] MR_HEAP Define

Strona 29 - 3.3 Task

Chapter 6 Using Configurator - 114 - << Content >> Define the following for each cyclic handler ID number. 1. ID name [( Definition form

Strona 30 - SUSPENDED

Chapter 6 Using Configurator - 115 - 7. Extended information [( Definition format )] Numeric value [( Definition range )] 1 to 0xFFFFFFFF [( Defaul

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Chapter 6 Using Configurator - 116 - [( Interrupt vector definition )] This definition is necessary to use Interrupt function. << Format >

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Chapter 6 Using Configurator - 117 - specified at the same time. [Precautions] 1. Regarding the method for specifying a register bank A kernel (OS

Strona 33 - Priority

Chapter 6 Using Configurator - 118 - Table 6.3 Interrupt Causes and Vector Numbers Interrupt cause Interrupt vector number Section Name DMA0 8 INT

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Chapter 6 Using Configurator - 119 - 6.1.3 Configuration File Example The following is the configuration file example. 1 /////////////////////////

Strona 35 - Called the task context

Chapter 2 General Information

Strona 36 - Flag wait pattern

Chapter 6 Using Configurator - 120 - 75 wait_queue = TA_TFIFO; 76 clear_attribute = NO; 77 wait_multi = TA_WMUL; 78 }; 79 flag[2]{ 80 name =

Strona 37 - 3. Alarm Handler

Chapter 6 Using Configurator - 121 - 155 name = ID_mpf1; 156 wait_queue = TA_TFIFO; 157 section = MR_RAM; 158 siz_block = 16; 159 num_block =

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Chapter 6 Using Configurator - 122 - 235 entry_address = alm2; 236 name = ID_alm2; 237 exinf = 0x12345678; 238 }; 239 240 241 // 242 // End

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Chapter 6 Using Configurator - 123 - 6.2 Configurator Execution Procedures 6.2.1 Configurator Overview The configurator is a tool that converts the

Strona 40 - 3.5.1 Module Structure

Chapter 6 Using Configurator - 124 - Configuration File xxx.cfg Default Configuration File default.cfg makefile Template File makefile.dos makefile

Strona 41 - 3.5.2 Module Overview

Chapter 6 Using Configurator - 125 - 6.2.2 Setting Configurator Environment Before executing the configurator, check to see if the environment varia

Strona 42 - Startup request count > 0

Chapter 6 Using Configurator - 126 - 6.2.3 Configurator Start Procedure Start the configurator as indicated below. A> cfg308 [-vmV] Conf

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Chapter 6 Using Configurator - 127 - 6.2.4 makefile generate Function The configurator follows the procedure below to generate makefile. 1. Examin

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Chapter 6 Using Configurator - 128 - 6.2.5 Precautions on Executing Configurator The following lists the precautions to be observed when executing

Strona 45 - Number of

Chapter 6 Using Configurator - 129 - 6.2.6 Configurator Error Indications and Remedies If any of the following messages is displayed, the configurat

Strona 46 - • Delay task (dly_tsk)

Chapter 2 General Information - 4 - 2.1 Objective of MR308 Development In line with recent rapid technological advances in microcomputers, the func

Strona 47 - Returned after use

Chapter 6 Using Configurator - 130 - service call of system definition item. cfg308 Error : system timer's vector <x>conflict near line x

Strona 48 - WAIT state

Chapter 6 Using Configurator - 131 - Warning messages The following message are a warning. A warning can be ignored providing that its content is u

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Chapter 6 Using Configurator - 132 - 6.3 Editing makefile Here you edit makefile the configurator generated, and set compilation options, libraries,

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Chapter 6 Using Configurator - 133 - 6.4 About an error when you execute make The following warning message of mr308tbl is displayed when you execu

Strona 52 - Message Message

Chapter 7 Application Creation Guide

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Chapter 7 Application Creation Guide - 136 - 7.1 Processing Procedures for System Calls from Handlers When a service call is issued from a handler,

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Chapter 7 Application Creation Guide - 137 - 7.1.1 System Calls from a Handler That Caused an Interrupt during Task Execution Scheduling (task swit

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Chapter 7 Application Creation Guide - 138 - 7.1.2 System Calls from a Handler That Caused an Interrupt during System Call Processing Scheduling (t

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Chapter 7 Application Creation Guide - 139 - 7.1.3 System Calls from a Handler That Caused an Interrupt during Handler Execution Let us think of a

Strona 57 - set_tim service call

Chapter 2 General Information - 5 - 7. Timer control is made easier. To perform processing at 10 ms intervals, the microcomputer timer function was

Strona 58 - • Set System Time (set_tim)

Chapter 7 Application Creation Guide - 140 - 7.2 Stacks 7.2.1 System Stack and User Stack The MR308 provides two types of stacks: system stack and

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Chapter 8 Sample Program Description

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Chapter 8 Sample Program Description - 142 - 8.1 Overview of Sample Program As an example application of MR308, the following shows a program that

Strona 61 - Move the end of the queue

Chapter 8 Sample Program Description - 143 - 8.2 Program Source Listing 1 /***********************************************************************

Strona 62 - Task Selection

Chapter 8 Sample Program Description - 144 - 8.3 Configuration File 1 //************************************************************************* 2

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Chapter 9 Separate ROMs

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Chapter 9 Separate ROMs - 146 - 9.1 How to Form Separate ROMs This chapter describes how to form the MR308's kernel and application programs i

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Chapter 9 Separate ROMs - 147 - App_progMR_CIFMR_ROMprogramMR_KERNELkernel ROM(Internal ROM)Application ROM1App_progMR_CIFMR_ROMStartupProgramMR308

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Chapter 9 Separate ROMs - 148 - Here you change the section files (c_sec.inc, asm_sec.inc), and set addresses of programs you locate in the applicat

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Chapter 9 Separate ROMs - 149 - e.g. mr308tbl \product\app1 \product\app2 8. Generating a system You execute the make command to genera

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Chapter 2 General Information - 6 - 2.2 Relationship between TRON Specification and MR308 The TRON Specification is an abbreviation for The Real-ti

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Real-time OS for M16C/70,80,M32C/80 Series M3T-MR308/4 User's Manual Publication Date: Nov. 1, 2

Strona 71 - Configuration file

M3T-MR308/4 User's Manual

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Chapter 2 General Information - 7 - 2.3 MR308 Features The MR308 offers the following features. 1. Real-time operating system conforming to the µI

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Chapter 3 Introduction to MR308

Strona 75 - 4.2.5 Writing ROM

Active X, Microsoft, MS-DOS, Visual Basic, Visual C++, Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporatio

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Chapter 3 Introduction to MR308 - 10 - 3.1 Concept of Real-time OS This section explains the basic concept of real-time OS. 3.1.1 Why Real-time O

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Chapter 3 Introduction to MR308 - 11 - Key inputmicrocomputerRemote controlmicrocomputerLED illuminationmicrocomputerArbitermicrocomputerVolume cont

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Chapter 3 Introduction to MR308 - 12 - Key inputTaskRemote controlTaskLED illuminationTaskreal-timeOSVolume controlTaskMonitorTaskMechanicalcontrolT

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Chapter 3 Introduction to MR308 - 13 - 3.1.2 Operating Principles of Real-time OS The real-time OS is the software that makes a one-microcomputer sy

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Chapter 3 Introduction to MR308 - 14 - In the state shown in Figure 3.5, it appears to the programmer that the key input task or its microcomputer i

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Chapter 3 Introduction to MR308 - 15 - R0PCSPRegisterKey inputTaskRemote controlTaskMemory mapStacksectionSFRR0PCSPR0PCSPSPLED illuminationTaskReal-

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Chapter 3 Introduction to MR308 - 16 - 3.2 Service Call How does the programmer use the real-time OS in a program? First, it is necessary to call

Strona 83 - 5.2.1 Writing Task

Chapter 3 Introduction to MR308 - 17 - 3.2.1 Service Call Processing When a service call is issued, processing takes place in the following sequenc

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Chapter 3 Introduction to MR308 - 18 - 3.2.2 Task Designation in Service call Each task is identified by the ID number internally in MR308. For exa

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Chapter 3 Introduction to MR308 - 19 - 3.3 Task This section describes how tasks are managed by MR308. 3.3.1 Task Status The real-time OS monitors t

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Preface The M3T-MR308/4(abbreviated as MR308) is a real-time operating system1 for the M16C/70,80, M

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Chapter 3 Introduction to MR308 - 20 - Forced termination request from other task SUSPENDED state clearrequest from other task SUSPEND requestfrom o

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Chapter 3 Introduction to MR308 - 21 - to the ready queue 13 is placed in the RUNNING state. ♦ A currently executed task has normally terminated i

Strona 89 - 5.5 Regarding Interrupts

Chapter 3 Introduction to MR308 - 22 - 4. SUSPENDED state When the sus_tsk system call is issued from a task in the RUNNING state or the isus_tsk sy

Strona 90 - 5.5.3 Controlling Interrupts

Chapter 3 Introduction to MR308 - 23 - 3.3.2 Task Priority and Ready Queue In the real-time OS, several tasks may simultaneously request to be exec

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Chapter 3 Introduction to MR308 - 24 - 3.3.3 Task Priority and Waiting Queue In The standard profiles in µITRON 4.0 Specification support two waiti

Strona 92 - 4. Precautions

Chapter 3 Introduction to MR308 - 25 - 3.3.4 Task Control Block(TCB) The task control block (TCB) refers to the data block that the real-time OS us

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Chapter 3 Introduction to MR308 - 26 - TCBTCBTCBTask Connection pointerStatusPriorityWake-up counterFlag wait modeFlag wait patternTime-out countero

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Chapter 3 Introduction to MR308 - 27 - 3.4 System States 3.4.1 Task Context and Non-task Context The system runs in either context state, "tas

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Chapter 3 Introduction to MR308 - 28 - Subroutine callTimer interruptRTSCyclic handlerAlarm handlerSystem clockinterrupt handlerTask Figure 3.18 Cyc

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Chapter 3 Introduction to MR308 - 29 - 3.4.3 CPU Locked/Unlocked States The system assumes either a CPU locked state or a CPU unlocked state. In a

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Chapter 3 Introduction to MR308 - 30 - 3.5 MR308 Kernel Structure 3.5.1 Module Structure The MR308 kernel consists of the modules shown in Figure

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Chapter 3 Introduction to MR308 - 31 - 3.5.2 Module Overview The MR308 kernel modules are outlined below. • Scheduler Forms a task processing queue

Strona 100 - • c_sec.inc

Chapter 3 Introduction to MR308 - 32 - 3.5.3 Task Management Function The task management function is used to perform task operations such as task

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Chapter 3 Introduction to MR308 - 33 - 1 Task APriority 2 Task CTask FTask ETask D 3 n Task BTask BWhen the priority of task B has been changed fro

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Chapter 3 Introduction to MR308 - 34 - 3.5.4 Synchronization functions attached to task The task-dependent synchronization functions attached to ta

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Chapter 3 Introduction to MR308 - 35 - only one forcible wait request to be nested, if sus_tsk is issued to a task in a forcible wait state, the err

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Chapter 3 Introduction to MR308 - 36 - ♦ Timeout wait state ♦ Wait state entered by slp_tsk service call (+ timeout included) ♦ Event flag (+ tim

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Chapter 3 Introduction to MR308 - 37 - 3.5.5 Synchronization and Communication Function (Semaphore) The semaphore is a function executed to coordin

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Chapter 3 Introduction to MR308 - 38 - • Reference Semaphore Status (ref_sem, iref_sem) Refers the status of the target semaphore. Checks the count

Strona 107 - Symbol

Chapter 3 Introduction to MR308 - 39 - 3.5.6 Synchronization and Communication Function (Eventflag) The eventflag is an internal facility of MR308

Strona 108 - • 10.5ms

i Contents Chapter 1 User’s Manual Organization ...

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Chapter 3 Introduction to MR308 - 40 - TaskF TaskD TaskB Flag pattern 0x0F Flag pattern 0 Flag queue TaskA TaskB TaskCTaskDTaskE TaskF0xFF AND 0

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Chapter 3 Introduction to MR308 - 41 - 3.5.7 Synchronization and Communication Function (Data Queue) The data queue is a mechanism to perform data

Strona 111 - MPU clock

Chapter 3 Introduction to MR308 - 42 - 3.5.8 Synchronization and Communication Function (Mailbox) The mailbox is a mechanism to perform data commun

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Chapter 3 Introduction to MR308 - 43 - T_MSG header T_MSG header T_MSG header Message queue Message A Message B Message C Figure 3.34 Message qu

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Chapter 3 Introduction to MR308 - 44 - 3.5.9 Memory pool Management Function The memorypool management function provides system memory space (RAM s

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Chapter 3 Introduction to MR308 - 45 - Variable-size Memory Pool Management Function The technique that allows you to arbitrary define the size of m

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Chapter 3 Introduction to MR308 - 46 - 200 bytes224 bytesRoundingMemorypoolTaskApget_blk200 bytes Figure 3.36 pget_mpl processing • Release Acquire

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Chapter 3 Introduction to MR308 - 47 - 3.5.10 Time Management Function The time management function provides system time management, time reading36

Strona 117 - ID name

Chapter 3 Introduction to MR308 - 48 - at the fifth occurrence of the time tick. • Set System Time (set_tim) • Reference System Time (get_tim) The

Strona 118 - Number of data queues

Chapter 3 Introduction to MR308 - 49 - 3.5.11 Cyclic Handler Function The cyclic handler is a time event handler that is started every startup cycl

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ii 4.2 Development Procedure Example... - 62 - 4.2

Strona 120 - Maximum message priority

Chapter 3 Introduction to MR308 - 50 - 3.5.12 Alarm Handler Function The alarm handler is a time event handler that is started only once at a speci

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Chapter 3 Introduction to MR308 - 51 - 3.5.13 System Status Management Function • Rotate Task Precedence (rot_rdq, irot_rdq) This service call est

Strona 122 - Memory pool size

Chapter 3 Introduction to MR308 - 52 - 3.5.14 Interrupt Management Function The interrupt management function provides a function to process request

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Chapter 3 Introduction to MR308 - 53 - 3.5.15 System Configuration Management Function This function inspects the version information of MR308. •

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Chapter 3 Introduction to MR308 - 54 - 3.5.17 Extended Function (Reset Function) The reset function is a function outside the scope of µITRON 4.

Strona 125 - Extended information

Chapter 3 Introduction to MR308 - 55 - 3.5.18 Service calls That Can Be Issued from Task and Handler Some service calls can be issued from a task,

Strona 126 - Vector No

Chapter 3 Introduction to MR308 - 56 - Service Call Task Context Non-task Context sig_sem o x isig_sem x o wai_sem o x twai_sem o x pol_sem o x

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Chapter 3 Introduction to MR308 - 57 - Service Call Task Context Non-task Context get_mpf o x tget_mpf o x pget_mpf o x rel_mpf o x irel_mpf x o

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Chapter 3 Introduction to MR308 - 58 - Service Call Task Context Non-task Context ref_ver o x iref_ver x o vsnd_dtq o x vtsnd_dtq o x vpsnd_dtq o

Strona 129 - - 119

Chapter 4 Applications Development Procedure Overview

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iii Warning messages ...

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Chapter 4 Applications Development Procedure Overview - 60 - 4.1 Overview Application programs for MR308 should generally be developed following t

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Chapter 4 Applications Development Procedure Overview - 61 - MR308 include filekernel.h Configuratorcfg308 Application object ROM write formatApp

Strona 133 - 6.2.1 Configurator Overview

Chapter 4 Applications Development Procedure Overview - 62 - 4.2 Development Procedure Example This chapter outlines the development procedures o

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Chapter 4 Applications Development Procedure Overview - 63 - #include <itron.h> #include <kernel.h> #include "kernel_id.h"

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Chapter 4 Applications Development Procedure Overview - 64 - 4.2.2 Configuration File Preparation Create a configuration file which has defined i

Strona 136 - -m Option

Chapter 4 Applications Development Procedure Overview - 65 - 4.2.3 Configurator Execution When using HEW, select "Build all," which enab

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Chapter 5 Detailed Applications

Strona 139 - Error messages

Chapter 5 Detailed Applications - 68 - 5.1 Program Coding Procedure in C Language 5.1.1 Task Description Procedure 1. Describe the task as a fun

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Chapter 5 Detailed Applications - 69 - 7. To specify a task, use the string written in the task definition item “name” of the configura-tion file.4

Strona 141 - Other messages

iv List of Figures Figure 3.1 Relationship between Program Size and Development Period...- 10 - Figure 3.2 Microcomp

Strona 142 - 6.3 Editing makefile

Chapter 5 Detailed Applications - 70 - 5.1.2 Writing a Kernel (OS Dependent) Interrupt Handler When describing the kernel (OS-dependent) interrupt

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Chapter 5 Detailed Applications - 71 - 5.1.3 Writing Non-kernel (OS-independent ) Interrupt Handler When describing the non-kernel(OS-independent)

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Chapter 5 Detailed Applications - 72 - 5.1.4 Writing Cyclic Handler/Alarm Handler When describing the cyclic or alarm handler in C language, observ

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Chapter 5 Detailed Applications - 73 - 5.2 Program Coding Procedure in Assembly Language This section describes how to write an application using th

Strona 146 - OS-independent handler

Chapter 5 Detailed Applications - 74 - 8. Set a task that is activated at MR308 system startup in the configuration file 52

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Chapter 5 Detailed Applications - 75 - 5.2.2 Writing Kernel(OS-dependent) Interrupt Handler When describing the kernel(OS-dependent) interrupt hand

Strona 148 - Processing

Chapter 5 Detailed Applications - 76 - 5.2.3 Writing Non-kernel(OS-independent) Interrupt Handler 1. For the symbol indicating the interrupt handle

Strona 149 - Execution

Chapter 5 Detailed Applications - 77 - 5.2.4 Writing Cyclic Handler/Alarm Handler When describing the cyclic or alarm handler in Assembly Language,

Strona 150 - • System Stack

Chapter 5 Detailed Applications - 78 - 5.3 The Use of INT Instruction MR308 has INT instruction interrupt numbers reserved for issuing service call

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Chapter 5 Detailed Applications - 79 - 5.5 Regarding Interrupts 5.5.1 Types of Interrupt Handlers MR308's interrupt handlers consist of kernel

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v Figure 5.2 Example Task Terminating with ext_tsk() Described in C Language...- 68 - Figure 5.3 Example of Kernel(OS-dependent

Strona 153 - 8.2 Program Source Listing

Chapter 5 Detailed Applications - 80 - 5.5.3 Controlling Interrupts Interrupt enable/disable control in a service call is accomplished by IPL manipu

Strona 154 - 8.3 Configuration File

Chapter 5 Detailed Applications - 81 - When the I flag before issuing a service call is 1 When the I flag before issuing a service call is 0 Service

Strona 155 - Chapter 9 Separate ROMs

Chapter 5 Detailed Applications - 82 - 5.6 Regarding Delay Dispatching MR308 has four service calls related to delay dispatching. • dis_dsp • ena_

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Chapter 5 Detailed Applications - 83 - 5.7 Regarding Initially Activated Task MR308 permits the user to specify a task that starts from a READY sta

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Chapter 5 Detailed Applications - 84 - 5.8 Modifying MR308 Startup Program MR308 comes with two types of startup programs as described below. • st

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Chapter 5 Detailed Applications - 85 - 5.8.1 C Language Startup Program (crt0mr.a30) Figure 5.14 C Language Startup Program (crt0mr.a30) shows th

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Chapter 5 Detailed Applications - 86 - 73 74 MOV.L #FROM_,A0 75 MOV.L #TO_,A1 76 MOV.L #(sizeof SECT_ & 0FFFFFFH)

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Chapter 5 Detailed Applications - 87 - 153 ;-------------------------------------------------------- 154 BCOPY data_FEI_top,data_FE_top,da

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Chapter 5 Detailed Applications - 88 - 233 JSR.W __init_alh 234 .ENDIF 235 236 .IF CYCLIC_HANDLER 237 .GLB __init_cyh

Strona 162 - User's Manual

Chapter 5 Detailed Applications - 89 - The following explains the content of the C language startup program (crt0mr.a30). 1. Incorporate a section

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