20.11 Semaphore Information (semaphore[])

Here, each semaphore is defined.

Format

Parentheses < >show the user input part.

semaphore[ <1. ID number> ] { name = <2. ID name (name)>; max_count = <3. Maximum resource count (max_count)>; initial_count = <4. Initial resource count (initial_count)>; wait_queue = <5. Wait queue attribute (wait_queue)>; };

1 ) ID number

- Description
Define the semaphore ID number.

- Definition format
Numeric value

- Definition range
From 1 to 255

- When omitting
The cfg600px assigns the ID number automatically.

2 ) ID name (name)

- Description
Define the ID name. The specified ID name is output to the system information header file (kernel_id.h) in the form of the following.

 #define   <ID name>   <ID number>

- Definition format
Symbol

- Definition range
-

- When omitting
Cannot be omitted.

3 ) Maximum resource count (max_count)

- Description
Define the maximum resource count

- Definition format
Numeric value

- Definition range
From 1 to 65535

- When omitting
The set value in the default system configuration file (factory setting: 1) applied.

4 ) Initial resource count (initial_count)

- Description
Define the initial resource count.

- Definition format
Numeric value

- Definition range
From 0 to max_count

- When omitting
The set value in the default system configuration file (factory setting: 1) applied.

5 ) Wait queue attribute (wait_queue)

- Description
Define the wait queue attribute.

- Definition format
Symbol

- Definition range
Select either of the following:

TA_TFIFO: FIFO order

TA_TPRI: Task current priority order
Among tasks with the same current priority, they are queued in FIFO order.

- When omitting
The set value in the default system configuration file (factory setting: TA_TFIFO) applied.