📄 os_flag.src
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; .\OS_FLAG.SRC generated from: OS_FLAG.C
; COMPILER INVOKED BY:
; C:\Keil\C51\BIN\C51.EXE OS_FLAG.C LARGE BROWSE ORDER NOAREGS DEBUG OBJECTEXTEND SRC(.\OS_FLAG.SRC)
$NOMOD51
NAME OS_FLAG
P0 DATA 080H
P1 DATA 090H
P2 DATA 0A0H
P3 DATA 0B0H
PSW DATA 0D0H
ACC DATA 0E0H
B DATA 0F0H
SP DATA 081H
DPL DATA 082H
DPH DATA 083H
PCON DATA 087H
TCON DATA 088H
TMOD DATA 089H
TL0 DATA 08AH
TL1 DATA 08BH
TH0 DATA 08CH
TH1 DATA 08DH
IE DATA 0A8H
IP DATA 0B8H
SCON DATA 098H
SBUF DATA 099H
CY BIT 0D0H.7
AC BIT 0D0H.6
F0 BIT 0D0H.5
RS1 BIT 0D0H.4
RS0 BIT 0D0H.3
OV BIT 0D0H.2
P BIT 0D0H.0
TF1 BIT 088H.7
TR1 BIT 088H.6
TF0 BIT 088H.5
TR0 BIT 088H.4
IE1 BIT 088H.3
IT1 BIT 088H.2
IE0 BIT 088H.1
IT0 BIT 088H.0
EA BIT 0A8H.7
ES BIT 0A8H.4
ET1 BIT 0A8H.3
EX1 BIT 0A8H.2
ET0 BIT 0A8H.1
EX0 BIT 0A8H.0
PS BIT 0B8H.4
PT1 BIT 0B8H.3
PX1 BIT 0B8H.2
PT0 BIT 0B8H.1
PX0 BIT 0B8H.0
RD BIT 0B0H.7
WR BIT 0B0H.6
T1 BIT 0B0H.5
T0 BIT 0B0H.4
INT1 BIT 0B0H.3
INT0 BIT 0B0H.2
TXD BIT 0B0H.1
RXD BIT 0B0H.0
SM0 BIT 098H.7
SM1 BIT 098H.6
SM2 BIT 098H.5
REN BIT 098H.4
TB8 BIT 098H.3
RB8 BIT 098H.2
TI BIT 098H.1
RI BIT 098H.0
; /*
; *********************************************************************************************************
; * uC/OS-II
; * The Real-Time Kernel
; * EVENT FLAG MANAGEMENT
; *
; * (c) Copyright 2001-2002, Jean J. Labrosse, Weston, FL
; * All Rights Reserved
; *
; * File : OS_FLAG.C
; * By : Jean J. Labrosse
; *********************************************************************************************************
; */
;
; #ifndef OS_MASTER_FILE
; #include "INCLUDES.H"
; #endif
;
; #if (OS_VERSION >= 251) && (OS_FLAG_EN > 0) && (OS_MAX_FLAGS > 0)
; /*
; *********************************************************************************************************
; * LOCAL PROTOTYPES
; *********************************************************************************************************
; */
;
; static void OS_FlagBlock(OS_FLAG_GRP *pgrp, OS_FLAG_NODE *pnode, OS_FLAGS flags, INT8U wait_type, INT16U timeout);
; static BOOLEAN OS_FlagTaskRdy(OS_FLAG_NODE *pnode, OS_FLAGS flags_rdy);
;
; /*$PAGE*/
; /*
; *********************************************************************************************************
; * CHECK THE STATUS OF FLAGS IN AN EVENT FLAG GROUP
; *
; * Description: This function is called to check the status of a combination of bits to be set or cleared
; * in an event flag group. Your application can check for ANY bit to be set/cleared or ALL
; * bits to be set/cleared.
; *
; * This call does not block if the desired flags are not present.
; *
; * Arguments : pgrp is a pointer to the desired event flag group.
; *
; * flags Is a bit pattern indicating which bit(s) (i.e. flags) you wish to check.
; * The bits you want are specified by setting the corresponding bits in
; * 'flags'. e.g. if your application wants to wait for bits 0 and 1 then
; * 'flags' would contain 0x03.
; *
; * wait_type specifies whether you want ALL bits to be set/cleared or ANY of the bits
; * to be set/cleared.
; * You can specify the following argument:
; *
; * OS_FLAG_WAIT_CLR_ALL You will check ALL bits in 'flags' to be clear (0)
; * OS_FLAG_WAIT_CLR_ANY You will check ANY bit in 'flags' to be clear (0)
; * OS_FLAG_WAIT_SET_ALL You will check ALL bits in 'flags' to be set (1)
; * OS_FLAG_WAIT_SET_ANY You will check ANY bit in 'flags' to be set (1)
; *
; * NOTE: Add OS_FLAG_CONSUME if you want the event flag to be 'consumed' by
; * the call. Example, to wait for any flag in a group AND then clear
; * the flags that are present, set 'wait_type' to:
; *
; * OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME
; *
; * err is a pointer to an error code and can be:
; * OS_NO_ERR No error
; * OS_ERR_EVENT_TYPE You are not pointing to an event flag group
; * OS_FLAG_ERR_WAIT_TYPE You didn't specify a proper 'wait_type' argument.
; * OS_FLAG_INVALID_PGRP You passed a NULL pointer instead of the event flag
; * group handle.
; * OS_FLAG_ERR_NOT_RDY The desired flags you are waiting for are not
; * available.
; *
; * Returns : The state of the flags in the event flag group.
; *
; * Called from: Task or ISR
; *********************************************************************************************************
; */
;
; #if OS_FLAG_ACCEPT_EN > 0
; OS_FLAGS OSFlagAccept (OS_FLAG_GRP *pgrp, OS_FLAGS flags, INT8U wait_type, INT8U *err)
; {
;
; OS_FLAGS flags_cur;
; OS_FLAGS flags_rdy;
; BOOLEAN consume;
;
;
; #if OS_ARG_CHK_EN > 0
; if (pgrp == (OS_FLAG_GRP *)0) { /* Validate 'pgrp' */
; *err = OS_FLAG_INVALID_PGRP;
; return ((OS_FLAGS)0);
; }
; if (pgrp->OSFlagType != OS_EVENT_TYPE_FLAG) { /* Validate event block type */
; *err = OS_ERR_EVENT_TYPE;
; return ((OS_FLAGS)0);
; }
; #endif
; if (wait_type & OS_FLAG_CONSUME) { /* See if we need to consume the flags */
; wait_type &= ~OS_FLAG_CONSUME;
; consume = TRUE;
; } else {
; consume = FALSE;
; }
; /*$PAGE*/
; *err = OS_NO_ERR; /* Assume NO error until proven otherwise. */
; OS_ENTER_CRITICAL();
; switch (wait_type) {
; case OS_FLAG_WAIT_SET_ALL: /* See if all required flags are set */
; flags_rdy = pgrp->OSFlagFlags & flags; /* Extract only the bits we want */
; if (flags_rdy == flags) { /* Must match ALL the bits that we want */
; if (consume == TRUE) { /* See if we need to consume the flags */
; pgrp->OSFlagFlags &= ~flags_rdy; /* Clear ONLY the flags that we wanted */
; }
; } else {
; *err = OS_FLAG_ERR_NOT_RDY;
; }
; flags_cur = pgrp->OSFlagFlags; /* Will return the state of the group */
; OS_EXIT_CRITICAL();
; break;
;
; case OS_FLAG_WAIT_SET_ANY:
; flags_rdy = pgrp->OSFlagFlags & flags; /* Extract only the bits we want */
; if (flags_rdy != (OS_FLAGS)0) { /* See if any flag set */
; if (consume == TRUE) { /* See if we need to consume the flags */
; pgrp->OSFlagFlags &= ~flags_rdy; /* Clear ONLY the flags that we got */
; }
; } else {
; *err = OS_FLAG_ERR_NOT_RDY;
; }
; flags_cur = pgrp->OSFlagFlags; /* Will return the state of the group */
; OS_EXIT_CRITICAL();
; break;
;
; #if OS_FLAG_WAIT_CLR_EN > 0
; case OS_FLAG_WAIT_CLR_ALL: /* See if all required flags are cleared */
; flags_rdy = ~pgrp->OSFlagFlags & flags; /* Extract only the bits we want */
; if (flags_rdy == flags) { /* Must match ALL the bits that we want */
; if (consume == TRUE) { /* See if we need to consume the flags */
; pgrp->OSFlagFlags |= flags_rdy; /* Set ONLY the flags that we wanted */
; }
; } else {
; *err = OS_FLAG_ERR_NOT_RDY;
; }
; flags_cur = pgrp->OSFlagFlags; /* Will return the state of the group */
; OS_EXIT_CRITICAL();
; break;
;
; case OS_FLAG_WAIT_CLR_ANY:
; flags_rdy = ~pgrp->OSFlagFlags & flags; /* Extract only the bits we want */
; if (flags_rdy != (OS_FLAGS)0) { /* See if any flag cleared */
; if (consume == TRUE) { /* See if we need to consume the flags */
; pgrp->OSFlagFlags |= flags_rdy; /* Set ONLY the flags that we got */
; }
; } else {
; *err = OS_FLAG_ERR_NOT_RDY;
; }
; flags_cur = pgrp->OSFlagFlags; /* Will return the state of the group */
; OS_EXIT_CRITICAL();
; break;
; #endif
;
; default:
; OS_EXIT_CRITICAL();
; flags_cur = (OS_FLAGS)0;
; *err = OS_FLAG_ERR_WAIT_TYPE;
; break;
; }
; return (flags_cur);
; }
; #endif
;
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