?? os_defines.inc
字號:
;------------------------------------------------------------------------------
;
; OS_DEFINES.INC: Defines (a) External References for OS routines
; (b) Bits in TaskState
;
; RTX51 TINY VERSION 2.0
;
;------------------------------------------------------------------------------
EXTRN NUMBER (?RTX_MAXTASKN) ; max Task Number
EXTRN NUMBER (?RTX_RAMTOP) ; top of RAM for stack
EXTRN DATA (?RTX_CURRENTTASK) ; current running task
EXTRN CODE (os_switch_task) ; perform a task switch
?RTX?TASKSTATE?S SEGMENT IDATA ; table of task states
?RTX?TASKSP?S SEGMENT IDATA ; table of task stack pointers
?RTX?TASKENT?S SEGMENT CODE ; table of task entry addresses
; Internal Status Bits of Task State
; Bits in TaskState:
; TaskState.0 = Wait for Signal
; TaskState.1 = Wait for TimeOut
; TaskState.2 = Signal Flag
; TaskState.3 = TimeOut Flag
; TaskState.4 = Task Ready (Wait for Running)
; TaskState.5 = Task Active (enabled with os_create)
; TaskState.6 = Round Robin Time Out
; TaskState.7 = Run Flag
; byte mask definitions
K_SIG EQU 1
K_TMO EQU 2
SIG_EVENT EQU 4
TMO_EVENT EQU 8
K_READY EQU 16
K_ACTIVE EQU 32
K_ROBIN EQU 64
K_IVL EQU 128 ; not a task state bit; only used in os_wait
RDY_EVENT EQU 128 ; READY status flag
K_RDY EQU 128 ; READY status flag
; bit position definitions
B_WAITSIG EQU 0
B_WAITTIM EQU 1
B_SIGNAL EQU 2
B_TIMEOUT EQU 3
B_READY EQU 4
B_ACTIVE EQU 5
B_ROBIN EQU 6
B_IVL EQU 7 ; not a task state bit; only used in os_wait
B_RDY EQU 7 ; READY status flag
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