hwi_init.c
来自「澳洲人写的Cortex,包括uC_IP协议栈」· C语言 代码 · 共 137 行
C
137 行
<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/kernel/src/hwi_init.c</TITLE></HEAD><BODY><pre><font color="#6920ac">/*************************************************************************/</font><font color="#6920ac">/* */</font><font color="#6920ac">/* Copyright (c) 1997-1999 Australian Real Time Embedded Systems */</font><font color="#6920ac">/* */</font><font color="#6920ac">/* PROPRIETARY RIGHTS of Australian Real Time Embedded Systems */</font><font color="#6920ac">/* are involved in the subject matter of this material. All reproduction,*/</font><font color="#6920ac">/* manufacturing, use, and sales rights pertaining to this subject matter*/</font><font color="#6920ac">/* are governed by the license agreement. The recipient of this software */</font><font color="#6920ac">/* implicitly accepts the terms of the license. */</font><font color="#6920ac">/* */</font><font color="#6920ac">/*************************************************************************/</font><font color="#6920ac">/************************************************************************* * * FILE NAME * * hwi_core.c * * SYSTEM COMPONENT * * Hardware Interrupt Management Component * * DESCRIPTION * * This file contains initialisation service for for Hardware * Interrupt Management Component * * SERVICES * * hrdi_Init - component initialisation routine * * SCCS HISTORY * * @(#)hwi_init.c 1.8, 09/14/99, 19:05:49 * * AUTHOR * * Vadim N. Azarovsky * * CREATED * * 17-Feb-1998 by Vadim N. Azarovsky * * REVISION HISTORY * * NAME DATE REMARKS * **************************************************************************/</font><b><font color='DarkGreen'>#include</font></b> <a href="hwi_priv.h.FIND-INC"><font color="blue">"hwi_priv.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="swi_defs.h.FIND-INC"><font color="blue">"swi_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="ass_defs.h.FIND-INC"><font color="blue">"ass_defs.h"</font></a><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="hrdi_Init">hrdi_Init</a></font></b>( <i>crtx_Void_t</i>){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <i>crtx_Int_t</i> i;<font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <font color="#6920ac">/* prevent double initialisation */</font> <b>if</b> (hrdi_Initialised_g) <font color="#6920ac">/* already initialised */</font> <b>return</b>; hrdi_Initialised_g = <a href="CRTX_TRUE.FIND-DEF">CRTX_TRUE</a>;<b><font color='DarkGreen'>#if</font></b><font color="maroon"> HRDI_USE_CORTEX_SCNDRY_INTR_TBL == 1</font> <a href="hrdi_CopyIntrTable.FIND-FUNC">hrdi_CopyIntrTable</a>();<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* HRDI_USE_CORTEX_SCNDRY_INTR_TBL == 1 */</font></font> <font color="#6920ac">/* initialise bit vector of registered interrupt vectors * (may be used by some ports). */</font> <a href="vbit_Create.FIND-FUNC">vbit_Create</a>(<a href="HRDI_INTR_VECTORS.FIND-DEF">HRDI_INTR_VECTORS</a>, &hrdi_Environ_g.RegVectors, hrdi_Environ_g.RegVectorsBits, <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>); hrdi_Environ_g.Nested = 0; <font color="#6920ac">/* no nested interrupts */</font><b><font color='DarkGreen'>#ifdef</font></b><font color="maroon"> HRDI_INTR_MASK_MODEL</font> hrdi_Environ_g.Defined = 0; <font color="#6920ac">/* no LISR registered */</font> hrdi_Environ_g.Enabled = 0; <font color="#6920ac">/* all LISR are disable */</font><b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* HRDI_INTR_MASK_MODEL */</font></font><b><font color='DarkGreen'>#ifdef</font></b><font color="maroon"> HRDI_PRIO_LEVEL_MODEL</font> hrdi_Environ_g.Priority = <a href="HRDI_INTR_ENABLE.FIND-DEF">HRDI_INTR_ENABLE</a>; <font color="#6920ac">/* normal priority level */</font> hrdi_Environ_g.MaxPrio = <a href="HRDI_INTR_ENABLE.FIND-DEF">HRDI_INTR_ENABLE</a>;<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* HRDI_PRIO_LEVEL_MODEL */</font></font> hrdi_Environ_g.ForbidCounter = 0; hrdi_Environ_g.GlobalCounter = 0; hrdi_Environ_g.IntrCounter = 0; hrdi_Environ_g.MaxNestedLevel = 0;<b><font color='DarkGreen'>#if</font></b><font color="maroon"> (HRDI_INTR_VECTORS != HRDI_NUM_LISR)</font> <font color="#6920ac">/* * When we allow to register less LISRs than number of interrupt * vectors special table is used to map interrupt vector number * to LISR vector number. All entries for unregistered interrupt * sources refer to the last record of the hrdi_LISRs_g table * which is used to catch all unhandled interrupts. */</font> <b>for</b> (i=0; i<<a href="HRDI_INTR_VECTORS.FIND-DEF">HRDI_INTR_VECTORS</a>; i++) { hrdi_RegVectorsTab_g[i] = <a href="HRDI_NUM_LISR.FIND-DEF">HRDI_NUM_LISR</a>; }<b><font color='DarkGreen'>#endif</font></b><font color="maroon"> <font color="#6920ac">/* (HRDI_INTR_VECTORS != HRDI_NUM_LISR) */</font></font> <font color="#6920ac">/* initialise table of registered hardware interrupt service routines */</font> <b>for</b> (i=0; i<<a href="HRDI_LISR_TABLE_SIZE.FIND-DEF">HRDI_LISR_TABLE_SIZE</a>; i++) { <a href="hrdi_InitISRCB.FIND-FUNC">hrdi_InitISRCB</a>(&hrdi_LISRs_g[i]); } <b>return</b>;<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}</pre></BODY></HTML>⌨️ 快捷键说明
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