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5.6 Synchronization & Communication Function (Mailbox)
Specifications of the mailbox function of MR100 are listed in Table 5.11.
Table 5.11 Specifications of the Mailbox Function
No.
Item
Content
1
Mailbox ID
1-255
2
Mailbox priority
1-255
TA_TFIFO:
Waiting tasks enqueued in order of FIFO
TA_TPRI:
Waiting tasks enqueued in order of priority
TA_MFIFO:
Messages enqueued in order of FIFO
3 Mailbox
attribute
TA_MPRI:
Messages enqueued in order of priority
Table 5.12 List of Mailbox Function Service Call
System State
No
.
Service Call
Function
T
N
E
D
U
L
1 snd_mbx
[S][B]
O
O O O
2 isnd_mbx
Send to mailbox
O O O O
3 rcv_mbx
[S][B]
Receive from mailbox
O
O
O
4 prcv_mbx
[S][B]
O
O O O
5 iprcv_mbx
Receive from mailbox(polling)
O O O O
6 trcv_mbx
[S]
Receive from mailbox(with timeout)
O
O
O
7 ref_mbx
O
O
O
O
8 iref_mbx
Reference mailbox status
O O O O
Notes:
•
[S]: Standard profile service calls
[B]: Basic profile service calls
•
Each sign within " System State " is a following meaning.
♦
T: Can be called from task context
♦
N: Can be called from non-task context
♦
E: Can be called from dispatch-enabled state
♦
D: Can be called from dispatch-disabled state
♦
U: Can be called from CPU-unlocked state
♦
L: Can be called from CPU-locked state
