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

Comments
You must not delete an event group which is in use by another task or timer procedure, as this can lead
to unpredictable results.
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RTOS Event Manager
Interrupt 0xAD service 0x42: RTX_SIGNAL_EVENTS, Signal event(s) in a group
Parameters
AH
BX
CX
DX
Set or clear up to 16 events under a mask in a group.
0x42 (= RTX_SIGNAL_EVENTS)
Event group ID acquired by RTX_CREATE_EVENTGROUP call.
16-Bit event group editing mask. The '1' bits here mark event flags to be set or cleared based on the
corresponding bit value supplied in DX. Other flags in the event group are unaffected.
New event values for the 16 event flags. Only the bits marked '1' in the CX mask are relevant here.
Return Value
Comments
DX = 0 success AX: 0
DX != 0 failure AX: contains error code
The Event Manager wakes up any tasks that are waiting on these events and satisfied with the resulting
collection of event states (in case of AND waiting condition). This can lead to an immediate task switch if
any of these released tasks are higher priority than the signaling task.
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RTOS Event Manager
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