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RX30000 Datasheet

  • RX30000

  • RX4000 Installation | User＇s Manual[10/2001]

  • 111頁(yè)

  • ETC

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CHAPTER 8 DESCRIBING A CF DEFINITION FILE
The items constituting the mailbox information are as follows.
mbx_id
Specifies an ID number for a mailbox.
A value of between 0x1 and the maximum number of mailboxes that can be created,
max_mbx,
or auto, can be specified for
mbx_id.
When auto is specified, the configurator automatically assigns an unused ID number
between 0x1 and
max_mbx.
mbx_nam
Specifies the name of a mailbox (mailbox name). A mailbox name is a character string that
begins with an alphabetic character. Its maximum length is 255 characters. The mailbox
name defined by mbx_nam can be used in place of a mailbox ID in the user programs.
twai_opt
Specifies the task queuing method.
The keywords that can be specified for
twai_opt
are TA_TFIFO and TA_TPRI.
TA_TFIFO
TA_TPRI
:
:
Tasks are queued in the same order as that in which message reception is
requested.
Tasks are queued according to their priority.
mwai_opt
Specifies the message queuing method.
The keywords that can be specified for
mwai_opt
are TA_MFIFO and TA_MPRI.
TA_MFIFO :
TA_MPRI
:
Messages are queued in the same order as that in which they are
transmitted.
Messages are queued according to their priority.
ext_inf
Specifies the extended information for the mailbox.
A value of between 0x0 and 0xffffffff, or a symbol name, can be specified for
ext_inf.
Caution
ext_inf
is provided to enable the specification of user own information for the
relevant mailbox. The user can specify it as necessary.
The value specified for
ext_inf
can be dynamically allocated upon the issue of
a ref_mbx system call by a processing program (task/nontask).
8.4.8 Memory Pool Information
As the memory pool information define, for each memory pool, data that indicates the ID number, memory pool
name, extended information, task queuing method, and size.
The number of memory pool information items that can be specified is defined as being within the range of 0 to
the maximum number of memory pools that can be created,
max_mpl,
as set in the system maximum value
information.
Figure 8-9 shows the specification format for the memory pool information.
76
User's Manual U13687EJ1V2UM

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