📄 sh3_sci.c
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<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/exports/hsh3/src/sh3_sci.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><b><font color='DarkGreen'>#include</font></b> <a href="sdr_defs.h.FIND-INC"><font color="blue">"sdr_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="sh3_sci.h.FIND-INC"><font color="blue">"sh3_sci.h"</font></a><i>static</i> <i>hsci_Desc_t</i> hsci_Context;<font size="+1"><i>static</i> <i>crtx_Void_t</i> <a href="hsci_HisrComplete.FIND-FUNC">hsci_HisrComplete</a>(<i>crtx_Void_t</i> *pContext_a);</font><font size="+1"><i>static</i> <i>crtx_Int_t</i> <a href="hsci_SndByte.FIND-FUNC">hsci_SndByte</a>(<i>crtx_Void_t</i> *pContext_a, <i>crtx_Char_t</i> Byte_a);</font><font size="+1"><i>static</i> <i>crtx_Int_t</i> <a href="hsci_RcvByte.FIND-FUNC">hsci_RcvByte</a>(<i>crtx_Void_t</i> *pContext_a);</font><font size="+1"><i>static</i> <i>crtx_Int_t</i> <a href="hsci_Ioctl.FIND-FUNC">hsci_Ioctl</a>(<i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Command_a, <i>crtx_Void_t</i> *pAttr_a);</font><font size="+1"><i>static</i> <i>crtx_Void_t</i> <a href="hsci_SndEnable.FIND-FUNC">hsci_SndEnable</a>(<i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a);</font><font size="+1"><i>static</i> <i>crtx_Void_t</i> <a href="hsci_RcvEnable.FIND-FUNC">hsci_RcvEnable</a>(<i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a);</font><font size="+1"><i>sdrv_Desc_t</i> *<b><font color="azure1"><a name="hsci_Create">hsci_Create</a></font></b>(<i>hsci_Desc_t</i> *pDesc_a, <i>sdrv_Desc_t</i> *pDrvDesc_a){</font> <i>crtx_Int_t</i> n; <i>crtx_Char_t</i> <a href="BRR.FIND-DEF">BRR</a>; <i>crtx_Int32_t</i> Tmp; <b>if</b> (pDesc_a == <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>) <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrNullDescriptor; hsci_Context = *pDesc_a; <font color="#6920ac">/* calculating of N for given cpu frequency and */</font> <font color="#6920ac">/* baud rate generator clock source */</font> <font color="#6920ac">/* HZ */</font> <font color="#6920ac">/* N = --------------- - 1 */</font> <font color="#6920ac">/* 2n-1 */</font> <font color="#6920ac">/* 64 * 2 * Baud */</font> <font color="#6920ac">/* HZ */</font> <font color="#6920ac">/* N = --------------- - 1 */</font> <font color="#6920ac">/* 2n+1 */</font> <font color="#6920ac">/* 16 * 2 * Baud */</font> pDesc_a->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] = 0; pDesc_a->PortAddr[<a href="HSH3_SCI_SMR_OFF.FIND-DEF">HSH3_SCI_SMR_OFF</a>] = 0; n = pDesc_a->PortAddr[<a href="HSH3_SCI_SMR_OFF.FIND-DEF">HSH3_SCI_SMR_OFF</a>] & (<a href="HSH3_SCI_SMR_CKS.FIND-DEF">HSH3_SCI_SMR_CKS</a>); Tmp = (16l * (1 <<(n + n + 1)) * pDesc_a->Baud); <a href="BRR.FIND-DEF">BRR</a> = (pDesc_a->CPUFrequency / Tmp) - 1; pDesc_a->PortAddr[<a href="HSH3_SCI_BRR_OFF.FIND-DEF">HSH3_SCI_BRR_OFF</a>] = <a href="BRR.FIND-DEF">BRR</a>; <font color="#6920ac">/* small delay */</font> {<i>int</i> i; <b>for</b> (i=0; i<100; i++ );} pDesc_a->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] = 0; {<i>long</i> i; <b>for</b> (i=0; i<100000l; i++ );} pDesc_a->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] |= (<a href="HSH3_SCI_SCR_TE.FIND-DEF">HSH3_SCI_SCR_TE</a> | <a href="HSH3_SCI_SCR_RE.FIND-DEF">HSH3_SCI_SCR_RE</a>); pDrvDesc_a->InterIn = pDesc_a->InpIntNum; pDrvDesc_a->InterOut = pDesc_a->OutIntNum; pDrvDesc_a->Flags = <a href="SDRV_FLAG_ECHO.FIND-DEF">SDRV_FLAG_ECHO</a>; pDrvDesc_a->HisrComplete = hsci_HisrComplete; pDrvDesc_a->SndByte = hsci_SndByte; pDrvDesc_a->SndEnable = hsci_SndEnable; pDrvDesc_a->RcvByte = hsci_RcvByte; pDrvDesc_a->RcvEnable = hsci_RcvEnable; pDrvDesc_a->Ioctl = hsci_Ioctl; pDrvDesc_a->pContext = (<i>void</i> *)&hsci_Context; <b>return</b>( pDrvDesc_a );<font color="blue">ErrNullDescriptor:</font> <b>return</b>( <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a> );}<font size="+1"><i>static</i> <i>crtx_Void_t</i> <b><font color="azure1"><a name="hsci_SndEnable">hsci_SndEnable</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a){</font> <i>hsci_Desc_t</i> *pDesc; pDesc = (<i>hsci_Desc_t</i> *)pContext_a; <b>if</b> (Enable_a == 0) { pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] &= ~<a href="HSH3_SCI_SCR_TIE.FIND-DEF">HSH3_SCI_SCR_TIE</a>; } <b>else</b> { pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] &= ~<a href="HSH3_SCI_SCR_TIE.FIND-DEF">HSH3_SCI_SCR_TIE</a>; pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] |= <a href="HSH3_SCI_SCR_TIE.FIND-DEF">HSH3_SCI_SCR_TIE</a>; }}<font size="+1"><i>static</i> <i>crtx_Void_t</i> <b><font color="azure1"><a name="hsci_RcvEnable">hsci_RcvEnable</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a){</font> <i>hsci_Desc_t</i> *pDesc; <i>crtx_Char_t</i> <a href="SCR.FIND-DEF">SCR</a>; pDesc = (<i>hsci_Desc_t</i> *)pContext_a; <b>if</b> (Enable_a == 0) { pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] &= ~<a href="HSH3_SCI_SCR_RIE.FIND-DEF">HSH3_SCI_SCR_RIE</a>; } <b>else</b> { <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>]; pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] &= ~<a href="HSH3_SCI_SCR_RIE.FIND-DEF">HSH3_SCI_SCR_RIE</a>; pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] |= <a href="HSH3_SCI_SCR_RIE.FIND-DEF">HSH3_SCI_SCR_RIE</a>; <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>]; }}<font size="+1"><i>static</i> <i>crtx_Void_t</i> <b><font color="azure1"><a name="hsci_HisrComplete">hsci_HisrComplete</a></font></b>( <i>crtx_Void_t</i> *pContext_a){</font> <i>hsci_Desc_t</i> *pDesc; pDesc = (<i>hsci_Desc_t</i> *)pContext_a; <font color="#6920ac">/* forbid tx interrupt */</font> pDesc->PortAddr[ <a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a> ] &= ~<a href="HSH3_SCI_SCR_TIE.FIND-DEF">HSH3_SCI_SCR_TIE</a>;}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hsci_SndByte">hsci_SndByte</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Char_t</i> Byte_a){</font> <i>hsci_Desc_t</i> *pDesc; <i>crtx_Int_t</i> Report; <i>crtx_Char_t</i> <i>volatile</i> *pSSR; pDesc = (<i>hsci_Desc_t</i> *)pContext_a; pSSR = (<i>crtx_Char_t</i> <i>volatile</i> *)&pDesc->PortAddr[ <a href="HSH3_SCI_SSR_OFF.FIND-DEF">HSH3_SCI_SSR_OFF</a> ]; pDesc->PortAddr[<a href="HSH3_SCI_TDR_OFF.FIND-DEF">HSH3_SCI_TDR_OFF</a>] = Byte_a; *pSSR &= ~<a href="HSH3_SCI_SSR_TDRE.FIND-DEF">HSH3_SCI_SSR_TDRE</a>; Report = (<i>crtx_Int_t</i>)Byte_a; pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>] |= <a href="HSH3_SCI_SCR_TIE.FIND-DEF">HSH3_SCI_SCR_TIE</a>; <b>return</b>(Report);}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hsci_RcvByte">hsci_RcvByte</a></font></b>( <i>crtx_Void_t</i> *pContext_a){</font> <i>hsci_Desc_t</i> *pDesc; <i>crtx_Int_t</i> Report; <i>crtx_Char_t</i> <a href="SSR.FIND-DEF">SSR</a>,<a href="SCR.FIND-DEF">SCR</a>; pDesc = (<i>hsci_Desc_t</i> *)pContext_a; Report = pDesc->PortAddr[<a href="HSH3_SCI_RDR_OFF.FIND-DEF">HSH3_SCI_RDR_OFF</a>] ; <a href="SSR.FIND-DEF">SSR</a> = pDesc->PortAddr[<a href="HSH3_SCI_SSR_OFF.FIND-DEF">HSH3_SCI_SSR_OFF</a>]; <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[<a href="HSH3_SCI_SCR_OFF.FIND-DEF">HSH3_SCI_SCR_OFF</a>]; pDesc->PortAddr[<a href="HSH3_SCI_SSR_OFF.FIND-DEF">HSH3_SCI_SSR_OFF</a>] &= ~(<a href="HSH3_SCI_SSR_RDRF.FIND-DEF">HSH3_SCI_SSR_RDRF</a> | <a href="HSH3_SCI_SSR_ORER.FIND-DEF">HSH3_SCI_SSR_ORER</a> | <a href="HSH3_SCI_SSR_PER.FIND-DEF">HSH3_SCI_SSR_PER</a> | <a href="HSH3_SCI_SSR_FER.FIND-DEF">HSH3_SCI_SSR_FER</a>); <a href="SSR.FIND-DEF">SSR</a> = pDesc->PortAddr[<a href="HSH3_SCI_SSR_OFF.FIND-DEF">HSH3_SCI_SSR_OFF</a>]; <b>return</b>(Report);}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hsci_Ioctl">hsci_Ioctl</a></font></b>(<i>crtx_Void_t</i> *pContext_a __attribute__((unused)), <i>crtx_Int_t</i> Command_a __attribute__((unused)), <i>crtx_Void_t</i> *pAttr_a __attribute__((unused))){</font> <b>return</b>( 0 );}</pre></BODY></HTML>⌨️ 快捷键说明
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