Renesas 70 3.5 MR308 Kernel Structure

Chapter 3 Introduction to MR308
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3.5 MR308 Kernel Structure
3.5.1 Module Structure
The MR308 kernel consists of the modules shown in Figure 3.19. Each of these modules is composed of func-
tions that exercise individual module features.
The MR308 kernel is supplied in the form of a library, and only necessary features are linked at the time of sys-
tem generation. More specifically, only the functions used are chosen from those which comprise these modules
and linked by means of the Linkage Editor LN308. However, the scheduler module, part of the task manage-
ment module, and part of the time management module are linked at all times because they are essential fea-
ture functions.
The applications program is a program created by the user. It consists of tasks, interrupt handler, alarm handler,
and cyclic handler.29
Task-dependent
synchronization
Eventflag
M32C Microcomputer
Scheduler
Mailbox
Semaphore
Task
Management
Application Program
Hardware
MR308 kernel
User Module
Time
Management
System stae
Management
Memorypool
Management
Interrupt
Management Data queue
System configuration
Management
Figure 3.19 MR308 Structure
29 For details, See 3.5.10.