📄 hit_s_co.c
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<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/exports/h8300h/src/hit_s_co.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="hit_s_de.h.FIND-INC"><font color="blue">"hit_s_de.h"</font></a><i>static</i> <i>hits_Desc_t</i> hits_Context;<font size="+1"><i>static</i> <i>crtx_Void_t</i> <a href="hits_HisrComplete.FIND-FUNC">hits_HisrComplete</a>( <i>crtx_Void_t</i> *pContext_a);</font><font size="+1"><i>static</i> <i>crtx_Int_t</i> <a href="hits_SndByte.FIND-FUNC">hits_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="hits_RcvByte.FIND-FUNC">hits_RcvByte</a>( <i>crtx_Void_t</i> *pContext_a);</font><font size="+1"><i>static</i> <i>crtx_Int_t</i> <a href="hits_Ioctl.FIND-FUNC">hits_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="hits_SndEnable.FIND-FUNC">hits_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="hits_RcvEnable.FIND-FUNC">hits_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="hits_Create">hits_Create</a></font></b>(<i>hits_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; hits_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="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ] = 0; pDesc_a->PortAddr[ <a href="H83H_OFF_SMR.FIND-DEF">H83H_OFF_SMR</a> ] = 0; n = pDesc_a->PortAddr[ <a href="H83H_OFF_SMR.FIND-DEF">H83H_OFF_SMR</a> ] & ( <a href="H83H_SCR_CKE1.FIND-DEF">H83H_SCR_CKE1</a> | <a href="H83H_SCR_CKE0.FIND-DEF">H83H_SCR_CKE0</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="H83H_OFF_BRR.FIND-DEF">H83H_OFF_BRR</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="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ] = 0; { <i>long</i> i; <b>for</b> (i=0; i<100000l; i++ ) ; } pDesc_a->PortAddr[ <a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ] |= ( <a href="H83H_SCR_TX_ENABLE.FIND-DEF">H83H_SCR_TX_ENABLE</a> | <a href="H83H_SCR_RX_ENABLE.FIND-DEF">H83H_SCR_RX_ENABLE</a>); <font color="#6920ac">/* (*(volatile char *)(0xffffd0)) = 1 | 4;*/</font> 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 = hits_HisrComplete; pDrvDesc_a->SndByte = hits_SndByte; pDrvDesc_a->SndEnable = hits_SndEnable; pDrvDesc_a->RcvByte = hits_RcvByte; pDrvDesc_a->RcvEnable = hits_RcvEnable; pDrvDesc_a->Ioctl = hits_Ioctl; pDrvDesc_a->pContext = (<i>void</i> *)&hits_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="hits_SndEnable">hits_SndEnable</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a){</font> <i>hits_Desc_t</i> *pDesc; pDesc = (<i>hits_Desc_t</i> *)pContext_a; <b>if</b> (Enable_a == 0) { pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] &= ~<a href="H83H_SCR_TX_INT_ENABLE.FIND-DEF">H83H_SCR_TX_INT_ENABLE</a>; } <b>else</b> { pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] &= ~<a href="H83H_SCR_TX_INT_ENABLE.FIND-DEF">H83H_SCR_TX_INT_ENABLE</a>; pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] |= <a href="H83H_SCR_TX_INT_ENABLE.FIND-DEF">H83H_SCR_TX_INT_ENABLE</a>; }}<font size="+1"><i>static</i> <i>crtx_Void_t</i> <b><font color="azure1"><a name="hits_RcvEnable">hits_RcvEnable</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Int_t</i> Enable_a){</font> <i>hits_Desc_t</i> *pDesc; <i>crtx_Char_t</i> <a href="SCR.FIND-DEF">SCR</a>; pDesc = (<i>hits_Desc_t</i> *)pContext_a; <b>if</b> (Enable_a == 0) { pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] &= ~<a href="H83H_SCR_RX_INT_ENABLE.FIND-DEF">H83H_SCR_RX_INT_ENABLE</a>; } <b>else</b> { <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>]; pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] &= ~<a href="H83H_SCR_RX_INT_ENABLE.FIND-DEF">H83H_SCR_RX_INT_ENABLE</a>; pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>] |= <a href="H83H_SCR_RX_INT_ENABLE.FIND-DEF">H83H_SCR_RX_INT_ENABLE</a>; <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[<a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a>]; }}<font size="+1"><i>static</i> <i>crtx_Void_t</i> <b><font color="azure1"><a name="hits_HisrComplete">hits_HisrComplete</a></font></b>( <i>crtx_Void_t</i> *pContext_a){</font> <i>hits_Desc_t</i> *pDesc; pDesc = (<i>hits_Desc_t</i> *)pContext_a; <font color="#6920ac">/* forbid tx interrupt */</font> pDesc->PortAddr[ <a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ] &= ~<a href="H83H_SCR_TX_INT_ENABLE.FIND-DEF">H83H_SCR_TX_INT_ENABLE</a>;}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hits_SndByte">hits_SndByte</a></font></b>( <i>crtx_Void_t</i> *pContext_a, <i>crtx_Char_t</i> Byte_a){</font> <i>hits_Desc_t</i> *pDesc; <i>crtx_Int_t</i> Report; <i>crtx_Char_t</i> <i>volatile</i> *pSSR; pDesc = (<i>hits_Desc_t</i> *)pContext_a; pSSR = (<i>crtx_Char_t</i> <i>volatile</i> *)&pDesc->PortAddr[ <a href="H83H_OFF_SSR.FIND-DEF">H83H_OFF_SSR</a> ];<font color="#6920ac">/* { int i; for ( i = 0; i< 30000; i++) ; } while ((*pSSR & H83H_SSR_TX_EMPTY) == 0) ;*/</font><font color="#6920ac">/* if ((*pSSR & ( H83H_SSR_RX_REG_FULL | H83H_SSR_OVERRUN_ERROR | H83H_SSR_FRAMING_ERROR | H83H_SSR_PARITY_ERROR )) == 0) {*/</font> pDesc->PortAddr[ <a href="H83H_OFF_TDR.FIND-DEF">H83H_OFF_TDR</a> ] = Byte_a;<font color="#6920ac">/* } else { *pSSR &= ~( H83H_SSR_RX_REG_FULL | H83H_SSR_OVERRUN_ERROR | H83H_SSR_FRAMING_ERROR | H83H_SSR_PARITY_ERROR ); Report = SDRV_ERROR_OUTPUT_CLOSED; goto ErrTxError_Exc; }*/</font> *pSSR &= ~<a href="H83H_SSR_TX_EMPTY.FIND-DEF">H83H_SSR_TX_EMPTY</a>;<font color="#6920ac">/* while ((*pSSR & H83H_SSR_TX_END) == 0) ;*/</font><font color="#6920ac">/* pDesc->PortAddr[ H83H_OFF_SSR ] &= ~H83H_SCR_TX_ENABLE;*/</font> Report = (<i>crtx_Int_t</i>)Byte_a;<font color="#6920ac">/*ErrTxError_Exc:*/</font> pDesc->PortAddr[ <a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ] |= <a href="H83H_SCR_TX_INT_ENABLE.FIND-DEF">H83H_SCR_TX_INT_ENABLE</a>; <b>return</b>(Report);}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hits_RcvByte">hits_RcvByte</a></font></b>( <i>crtx_Void_t</i> *pContext_a){</font> <i>hits_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>hits_Desc_t</i> *)pContext_a; Report = pDesc->PortAddr[ <a href="H83H_OFF_RDR.FIND-DEF">H83H_OFF_RDR</a> ] ; <a href="SSR.FIND-DEF">SSR</a> = pDesc->PortAddr[ <a href="H83H_OFF_SSR.FIND-DEF">H83H_OFF_SSR</a> ]; <a href="SCR.FIND-DEF">SCR</a> = pDesc->PortAddr[ <a href="H83H_OFF_SCR.FIND-DEF">H83H_OFF_SCR</a> ]; pDesc->PortAddr[ <a href="H83H_OFF_SSR.FIND-DEF">H83H_OFF_SSR</a> ] &= ~( <a href="H83H_SSR_RX_REG_FULL.FIND-DEF">H83H_SSR_RX_REG_FULL</a> | <a href="H83H_SSR_OVERRUN_ERROR.FIND-DEF">H83H_SSR_OVERRUN_ERROR</a> | <a href="H83H_SSR_FRAMING_ERROR.FIND-DEF">H83H_SSR_FRAMING_ERROR</a> | <a href="H83H_SSR_PARITY_ERROR.FIND-DEF">H83H_SSR_PARITY_ERROR</a> ); <a href="SSR.FIND-DEF">SSR</a> = pDesc->PortAddr[ <a href="H83H_OFF_SSR.FIND-DEF">H83H_OFF_SSR</a> ];<font color="#6920ac">/* pDesc->PortAddr[ H83H_OFF_SSR ] &= ~0x40;*/</font><font color="#6920ac">/* pDesc->PortAddr[ H83H_OFF_SCR ] &= ~H83H_SCR_RX_ENABLE;*/</font> <b>return</b>(Report);}<font size="+1"><i>static</i> <i>crtx_Int_t</i> <b><font color="azure1"><a name="hits_Ioctl">hits_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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