IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

The task name is not a null terminated string. It must contain four bytes (not necessarily ASCII).
The task state returned in BX is a bit field coded same as taskState member of the Task_StateData
data structure.
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API function RTX_GET_TASK_STATE - Get state of a task
Interrupt 0xAD service 0x20: RTX_DISABLE_TASK_SCHEDULING, Task Lock
Task switching is inhibited until follow up call(s) to RTX_ENABLE_TASK_SCHEDULER is made.
Interrupt service routines continue to execute, however Timer procedures will be delayed until task
switching is re-enabled.
Parameters
AH
Comments
0x20 (= RTX_DISABLE_TASK_SCHEDULING)
After making this call, the task must remain compute bound until it follows up with a call to
RTX_ENABLE_TASK_SCHEDULER. The task must not call any API which waits or ends the task.
Note that this is implemented as a spin lock, such that if for some reason the task calls here N times then
N calls to RTX_ENABLE_TASK_SCHEDULER are required to unwind the spin lock and re-enable the
task switching.
Caution: This call must be followed by a call to RTX_ENABLE_TASK_SCHEDULER as soon as
possible to re-enable the task switching. Should the task lock period be excessive, the system
watchdog must be triggered by the user until the task switching is re-enabled.
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RTOS Task Control Services
Interrupt 0xAD service 0x21: RTX_ENABLE_TASK_SCHEDULING, Release Task Lock
Parameters
AH
Unwinds the task switching spin lock to re-enable task switching.
0x21 (= RTX_ENABLE_TASK_SCHEDULING)
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