Main
Page
Preface
Requirements for MR308 Use
C-compiler package M3T-NC308WA(abbreviated as NC308) for M16C/70,80 M32C/80 series micro-
Document List
Release Note
Page
Contents
Page
Page
List of Figures
Page
List of Tables
Page
Page
Page
2.1 Objective of MR308 Development
Page
2.2 Relationship between TRON Specification and MR308
2.3 MR308 Features
Page
Chapter 3 Introduction to MR308
3.1 Concept of Real-time OS
3.1.1 Why Real-time OS is Necessary
Page
Page
3.1.2 Operating Principles of Real-time OS
Time
Page
Page
3.2 Service Call
3.2.1 Service Call Processing
3.2.2 Task Designation in Service call
3.3 Task
3.3.1 Task Status
Page
Page
3.3.2 Task Priority and Ready Queue
TCB
TCBTCB TCBTCB
3.3.3 Task Priority and Waiting Queue
taskB
taskC
Page
TCB
the timeout function is used.
3.4 System States
3.4.1 Task Context and Non-task Context
1. Interrupt Handler
2. Cyclic Handler
3. Alarm Handler
3.4.2 Dispatch Enabled/Disabled States
3.4.3 CPU Locked/Unlocked States
3.4.4 Dispatch Disabled and CPU Locked States
3.5 MR308 Kernel Structure
3.5.1 Module Structure
3.5.2 Module Overview
Scheduler
3.5.3 Task Management Function
Activate Task (act_tsk, iact_tsk)
Ter mi na te d
Activate Task (sta_tsk, ista_tsk)
Terminate Invoking Task (ext_tsk)
Terminate Task (ter_tsk)
Reference task priority (get_pri, iget_pri)
Reference task status (simple version) (ref_tst, iref_tst)
Reference task status (ref_tsk, iref_tsk)
3.5.4 Synchronization functions attached to task
Put Task to sleep (slp_tsk,tslp_tsk) Wakeup task (wup_tsk, iwup_tsk)
Wake up r eque st c oun t
0 0 1 0 0
Wakeup request count
0 0 1 2 1
Forcibly resume suspended task (frsm_tsk, ifrsm_tsk)
Release task from waiting (rel_wai, irel_wai)
Delay task (dly_tsk)
3.5.5 Synchronization and Communication Function (Semaphore)
Semaphore
Task
A
Release Semaphore Resource(sig_sem, isig_sem)
Acquire Semaphore Resource(wai_sem, twai_sem)
Acquire Semaphore Resource(pol_sem, ipol_sem)
Reference Semaphore Status (ref_sem, iref_sem)
3.5.6 Synchronization and Communication Function (Eventflag)
Set Eventflag (set_flg, iset_flg)
Clear Eventflag (clr_flg, iclr_flg)
Wait for Eventflag (wai_flg, twai_flg)
Wait for Eventflag (polling)(pol_flg, ipol_flg)
Reference Eventflag Status (ref_flg, iref_flg)
Chapter 3 Introduction to MR308
- 40 -
TaskF TaskD
TaskB
Send to Data Queue(snd_dtq, tsnd_dtq)
Send to Data Queue (psnd_dtq, ipsnd_dtq)
Forced Send to Data Queue (fsnd_dtq, ifsnd_dtq)
Receive from Data Queue (rcv_dtq, trcv_dtq)
Receive from Data Queue (prcv_dtq,iprcv_dtq)
3.5.8 Synchronization and Communication Function (Mailbox)
Message Message
TaskB TaskA
Message queue Message A Message B Message C
Send to Mailbox (snd_mbx, isnd_mbx)
Receive from Mailbox (rcv_mbx, trcv_mbx)
Receive from Mailbox (polling) (prcv_mbx, iprcv_mbx)
Reference Mailbox Status (ref_mbx, iref_mbx)
3.5.9 Memory pool Management Function
Acquire Fixed-size Memory Block (polling) (pget_mpf, ipget_mpf)
Release Fixed-size Memory Block (rel_mpf, irel_mpf)
Reference Fixed-size Memory Pool Status (ref_mpf, iref_mpf)
Acquire Variable-size Memory Block (pget_mpl)
Release Acquire Variable-size Memory Block (rel_mpl)
Reference Acquire Variable-size Memory Pool Status (ref_mpl, iref_mpl)
3.5.10 Time Management Function
Place a task in a finite time wait state by specifying a timeout value
Page
3.5.11 Cyclic Handler Function
Start Cyclic Handler Operation (sta_cyc, ista_cyc)
Stop Cyclic Handler Operation (stp_cyc, istp_cyc)
Reference Cyclic Handler Status (ref_cyc, iref_cyc)
3.5.12 Alarm Handler Function
Start Alarm Handler Operation (sta_alm, ista_alm)
Stop alarm Handler Operation (stp_alm, istp_alm)
Reference Alarm Handler Status (ref_alm, iref_alm)
Page
3.5.14 Interrupt Management Function
Returns from interrupt handler (ret_int)
3.5.15 System Configuration Management Function
References Version Information(ref_ver, iref_ver)
3.5.16 Extended Function (Short Data Queue)
Send to Short Data Queue (vsnd_dtq, vtsnd_dtq)
Send to Short Data Queue (vpsnd_dtq, vipsnd_dtq)
Forced Send to Short Data Queue (vfsnd_dtq, vifsnd_dtq)
Page
3.5.18 Service calls That Can Be Issued from Task and Handler
Page
Page
Page
Chapter 4 Applications Development Procedure Overview
4.1 Overview
1. Generating a project
2. Coding the application program
3. Creating a configuration file
4. Executing the configurator
HEW
Figure 4.1 MR308 System Generation Detail Flowchart
Page
Chapter 4 Applications Development Procedure Overview
Figure 4.2 Program Example
- 63 -
Chapter 4 Applications Development Procedure Overview
- 64 -
4.2.2 Configuration File Preparation
Figure 4.3 Configuration File Example
4.2.3 Configurator Execution
4.2.4 System generation
4.2.5 Writing ROM
Page
Chapter 5 Detailed Applications
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 function.
Page
5.1.2 Writing a Kernel (OS Dependent) Interrupt Handler
5.1.3 Writing Non-kernel (OS-independent ) Interrupt Handler
5.1.4 Writing Cyclic Handler/Alarm Handler
5.2 Program Coding Procedure in Assembly Language
5.2.1 Writing Task
Page
5.2.2 Writing Kernel(OS-dependent) Interrupt Handler
5.2.3 Writing Non-kernel(OS-independent) Interrupt Handler
5.2.4 Writing Cyclic Handler/Alarm Handler
5.3 The Use of INT Instruction
5.4 The Use of registers of bank
5.5 Regarding Interrupts
5.5.1 Types of Interrupt Handlers
High
Kernel(OS-dependent) interrupt handler
Non-kernel(OS-independent) interrupt handler
For service calls that can be issued from only task context.
Page
Page
Page
Page
Chapter 5 Detailed Applications
- 85 -
5.8.1 C Language Startup Program (crt0mr.a30)
Chapter 5 Detailed Applications
- 86 -
Chapter 5 Detailed Applications
- 87 -
Chapter 5 Detailed Applications
- 88 -
Figure 5.14 C Language Startup Program (crt0mr.a30)
Page
5.9 Memory Allocation
asm_sec.inc
c_sec.inc
Page
Page
Page
5.10 Using in M16C/70 Series
Page
6.1 Configuration File Creation Procedure
6.1.1 Configuration File Data Entry Format
Comment Statement
End of statement
Numerical Value
123 123 + 0x23 (23/4 + 3) 100B + 0aH
Symbol
_TASK1 IDLE3
Function Name
main() func()
Page
6.1.2 Configuration File Definition Items
Maximum value of priority ;
Timeout function
Task Pause
Time tick denominator
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Chapter 6 Using Configurator
- 119 -
6.1.3 Configuration File Example
The following is the configuration file example.
Chapter 6 Using Configurator
- 120 -
Chapter 6 Using Configurator
- 121 -
Page
6.2 Configurator Execution Procedures
6.2.1 Configurator Overview
1. Executing the configurator requires the following input files:
Configuration file (XXXX.cfg)
Default configuration file (default.cfg)
cfg308
Page
6.2.3 Configurator Start Procedure
Command Options
-v Option
-V Option
-m Option
6.2.4 makefile generate Function
1. Examine the source file's dependency relationship.
2. Write the file dependency relationship to makefile
Page
6.2.6 Configurator Error Indications and Remedies
Error messages
Page
Warning messages
Other messages
6.3 Editing makefile
6.4 About an error when you execute make
mr308tbl Warning : You need not specify systime.timeout YES in configuration file
tslp_tsk, twai_flg, trcv_mbx, twai_sem, tsnd_dtq, trcv_dtq, vtsnd_dtq, vtrcv_dtq
Page
Page
7.1 Processing Procedures for System Calls from Handlers
7.1.1 System Calls from a Handler That Caused an Interrupt during Task Execution
7.1.2 System Calls from a Handler That Caused an Interrupt during System Call Processing
7.1.3 System Calls from a Handler That Caused an Interrupt during Handler Execution
7.2 Stacks
7.2.1 System Stack and User Stack
User Stack
System Stack
Page
8.1 Overview of Sample Program
task2 operates in order of the following.
Chapter 8 Sample Program Description
- 143 -
8.2 Program Source Listing
Chapter 8 Sample Program Description
- 144 -
8.3 Configuration Fil e
Page
9.1 How to Form Separate ROMs
Programs to be located in the kernel ROM
Programs to be located in the application ROM
How to locate individual programs is given below.
Page
Page
Page
2005. Renesas Technology Corp. and Renesas Solutions Corp.,
