Zilog EZ80F91AZA Manual de usuario descargar pdf (Pagina 37)

UM007518-1211 In-Depth Questions About Using RZK

Zilog Real-Time Kernel: eZ80

CPU

User Manual

Q: Can I change the blocking queue type from FIFO to priority or vice versa for mes-

sagequeues, semaphores or other RZK objects?

A: No. You cannot change the blocking queue type of a created object.

Q: What is the difference between the macros RZK_SYSTICKS_

INSECH

and RZK_DEVTICKS_PERSYSTICKH? The granularity of the system is depen-

dent on which of these macros?

A: The RZK_SYSTICKS_INSECH represents system ticks per second, whereas

RZK_DEVTICKS_PERSYSTICKH represents the number of device ticks that are present in

one system tick. The granularity of the system depends upon the

RZK_SYSTICKS_INSECH value.

Q: What are Debug Priority Inheritance, Debug Non Priority Inheritance, Non Debug

Priority Inheritance and Non DebugNon Priority Inheritance? Why are they required?

A: These four sets of RZK libraries (four for each target platform) are categorized

according to the implementation of priority inheritance protocol. Debug Priority Inheri-

tance indicates that debugging and Priority Inheritance are enabled. The N in front of

either Debug or Priority Inheritance indicates that they are disabled.

For example, The real-time application may therefore be used first with the RZK

DebugPI configuration to remove any errors during testing of the system. If the applica-

tion is error-free, it is preferable to use the RZK

NDebugNPI or RZK NDebugPI configu-

ration, based on the application requirements.

Q: I changed the RZK configuration from Debug Priority Inheritance to Non Debug Non

Priority Inheritance by including the Non Debug Non Priority Inheritance libraries in the

project and removing the Debug Priority Inheritance libraries from the project. Do I need

to change anything else?

A: No.

Q: What is the include order for RZK-related header files?

A: The include order for RZK-related header files is:

#include "ZTypes.h"

#include "ZSysgen.h"

"other required RZK header files"

ZSysgen.h

and ZTypes.h can be in any order, but all other RZK header files must be

included after these two header files because all of the RZK header files use the macros

and definitions of the

ZSysgen.h and ZTypes.h files.

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Zilog EZ80F91AZA Manual de usuario Pagina 37