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Freescale mcu OpenTCP-1.0.4.doc.html.zip 文档

00238  
00239 }
00240 
<a name="l00252"></a><a class="code" href="ethernet_8c.html#a10">00252</a> <span class="keywordtype">void</span> <a class="code" href="ethernet_8c.html#a10">inNE2000againbuf</a> (UINT8* buf, UINT16 len)
00253 {
00254         <span class="keywordflow">while</span>(len--)
00255         {
00256                 <a class="code" href="config_8h.html#a7">IOR</a> = 0;
00257                 <span class="keywordflow">while</span>(<a class="code" href="config_8h.html#a8">IOCHRDY</a> == 0);            <span class="comment">/* Wait until bus free */</span>                               
00258                 *buf++ = <a class="code" href="config_8h.html#a3">DATABUS</a>;
00259                 <a class="code" href="config_8h.html#a7">IOR</a> = 1;        
00260         }
00261 }
00262 
<a name="l00274"></a><a class="code" href="ethernet_8c.html#a11">00274</a> UINT8 <a class="code" href="ethernet_8c.html#a11">NE2000CheckRxFrame</a> (<span class="keywordtype">void</span>)
00275 {
00276         <span class="comment">/* Checks to see if ethernet frame has been received */</span>
00277         
00278         UINT8 temp;
00279         
00280         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a> ,0x62);                   <span class="comment">/* page 1, abort DMA */</span>
00281         temp = <a class="code" href="ethernet_8c.html#a8">inNE2000</a>( <a class="code" href="ethernet_8h.html#a29">CURR</a> );
00282         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x02 );                  <span class="comment">/* page 0 */</span>
00283         
00284         <span class="keywordflow">if</span>( temp != <a class="code" href="ethernet_8c.html#a8">inNE2000</a>( <a class="code" href="ethernet_8h.html#a9">BOUNDARY</a> ) ) {
00285                 <span class="comment">/* Boundary != Current =&gt; packet exists */</span>
00286                 
00287                 <span class="comment">/* Check still for receive status       */</span>
00288                 <span class="keywordflow">if</span>(<a class="code" href="ethernet_8c.html#a8">inNE2000</a>(<a class="code" href="ethernet_8h.html#a19">RCR</a>) &amp; 0x01)
00289                         <span class="keywordflow">return</span>(TRUE);
00290 
00291         }       
00292         
00293         <span class="keywordflow">return</span>(FALSE); 
00294 }
00295 
<a name="l00304"></a><a class="code" href="ethernet_8c.html#a12">00304</a> <span class="keywordtype">void</span> <a class="code" href="ethernet_8c.html#a12">NE2000DumpRxFrame</a> (<span class="keywordtype">void</span>)
00305 {
00306  
00307         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x22 );                  <span class="comment">/* page0, abort DMA */</span>
00308         
00309         <span class="comment">/* Set boundary to start of next packet */</span>
00310         
00311         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a9">BOUNDARY</a>, <a class="code" href="ethernet_8c.html#a0">NE2000NextPktPtr</a> );        
00312 
00313  
00314 }
00315  
00316  
<a name="l00327"></a><a class="code" href="ethernet_8c.html#a1">00327</a> <span class="keywordtype">void</span> <a class="code" href="ethernet_8c.html#a1">NE2000Init</a> (UINT8* mac)
00328 {
00329 
00330         <span class="comment">/* Give HW Reset        */</span>
00331         
00332         <a class="code" href="config_8h.html#a9">RESETPIN_NE2000</a> = 1;
00333         wait(10000);
00334         <a class="code" href="config_8h.html#a9">RESETPIN_NE2000</a> = 0;
00335         wait(10000);
00336         
00337         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( RESETPORT, 0 );              <span class="comment">/* reset NE2000*/</span>
00338         <span class="comment">/* Wait for a while */</span>
00339         
00340         wait(30000);
00341 
00342         
00343         <span class="comment">/* Goto page 3 and set registers */</span>
00344         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0xC1 );                  <span class="comment">/* page3, stop */</span>
00345         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( 0x01, 0xC0 );                <span class="comment">/* config reg. write enble */</span>
00346         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( 0x05, 0 );                   <span class="comment">/* link test enable */</span>
00347         <span class="comment">/* outNE2000( 0x06, 0x70 );             //Full duplex, leds */</span>
00348         
00349         <span class="comment">/* Goto page 1 and set registers */</span>
00350         
00351         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x41 );                                                          <span class="comment">/* page1, stop */</span>
00352         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( PAR5, *mac++);                       <span class="comment">/* Set MAC Address  */</span>
00353         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( PAR4, *mac++);
00354         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( PAR3, *mac++);
00355         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( PAR2, *mac++);
00356         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( PAR1, *mac++);
00357         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a23">PAR0</a>, *mac); 
00358         
00359         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a29">CURR</a>, <a class="code" href="ethernet_8h.html#a33">RXBUF_START</a> ); <span class="comment">/* Current address */</span>
00360         <a class="code" href="ethernet_8c.html#a0">NE2000NextPktPtr</a> = <a class="code" href="ethernet_8h.html#a33">RXBUF_START</a>;
00361         <a class="code" href="ethernet_8c.html#a1">NE2000CurrPktPtr</a> = <a class="code" href="ethernet_8h.html#a33">RXBUF_START</a>;
00362         
00363         <span class="comment">/* Goto page 0 and set registers */</span>
00364         
00365         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0 );                                             <span class="comment">/* page0, Stop */</span>
00366         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a7">PSTART</a>, <a class="code" href="ethernet_8h.html#a33">RXBUF_START</a>);                <span class="comment">/* Rx buffer start address */</span>
00367         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a8">PSTOP</a>, <a class="code" href="ethernet_8h.html#a34">RXBUF_END</a> );                  <span class="comment">/* Rx buffer end address */</span>
00368         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a9">BOUNDARY</a>, <a class="code" href="ethernet_8h.html#a33">RXBUF_START</a> );             <span class="comment">/* Boundary */</span>
00369         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a14">ISR</a>, 0xFF );                                 <span class="comment">/* Interrupt services */</span>
00370         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a19">RCR</a>, 0xC4);                                  <span class="comment">/* Rx config (Accept all), was C4 */</span>
00371         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a20">TCR</a>, 0xE0);                                  <span class="comment">/* Tx config */</span>
00372         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a21">DCR</a>, 0xB8);                                  <span class="comment">/* Dataconfig */</span>
00373         
00374         <span class="comment">/* Start action ! */</span>
00375         
00376         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x22 );                   <span class="comment">/* Page0, start */</span>
00377         
00378 }
00379 
00380 
<a name="l00393"></a><a class="code" href="ethernet_8c.html#a1">00393</a> <span class="keywordtype">void</span> <a class="code" href="group__periodic__functions.html#a1">NE2000CheckOverFlow</a> (<span class="keywordtype">void</span>)
00394 {
00395         <span class="comment">/* Checks if Receive Buffer overflow has happened */</span>
00396         <span class="comment">/* and re-initializes the NIC if needed                   */</span>
00397         
00398         UINT8 temp;
00399 
00400         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x22 );                  <span class="comment">/* page0, abort DMA */</span>
00401 
00402         <span class="keywordflow">if</span>( <a class="code" href="ethernet_8c.html#a8">inNE2000</a>( <a class="code" href="ethernet_8h.html#a14">ISR</a> ) &amp; 0x10 ) {
00403         
00404                 <span class="comment">/* OverFlow occured!! */</span>
00405         
00406                 <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a6">CR</a>, 0x21 );          <span class="comment">/* Issue Stop-command           */</span>
00407  
00408                 <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a17">RBCR0</a>, 0x00 );       <span class="comment">/* Clear remote Byte Count      */</span>
00409                 <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( RBCR1, 0x00 );
00410         
00411                 <span class="comment">/* Poll the interrupt status register for RST bit */</span>
00412         
00413                 kick_WD();
00414                 <span class="keywordflow">while</span>( ( <a class="code" href="ethernet_8c.html#a8">inNE2000</a>( <a class="code" href="ethernet_8h.html#a14">ISR</a> ) &amp; 0x80 ) == 0 );
00415 
00416                 <span class="comment">/* RST was set, NIC is in Stop mode     */</span>
00417                 <span class="comment">/* Enter to LOOPBACK mode now           */</span>
00418         
00419                 <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a20">TCR</a>, 0x02 );
00420         
00421                 <span class="comment">/* Issue Start Command                                                  */</span>
00422                 <span class="comment">/* NIC is still inactive because LOOPBACK on    */</span>
00423         
00424                 <a class="code" href="ethernet_8c.html#a5">outNE2000</a>(<a class="code" href="ethernet_8h.html#a6">CR</a>,0x22);
00425         
00426                 <span class="comment">/* Remove Packet from buffer */</span>
00427         
00428                 <span class="keywordflow">if</span>(<a class="code" href="ethernet_8c.html#a8">inNE2000</a>(<a class="code" href="ethernet_8h.html#a9">BOUNDARY</a>) != <a class="code" href="ethernet_8c.html#a0">NE2000NextPktPtr</a>) {
00429                         ETH_DEBUGOUT(<span class="stringliteral">"\r\n*********Normal Overflow**********\r\n"</span>);
00430                         <a class="code" href="ethernet_8c.html#a5">outNE2000</a>( <a class="code" href="ethernet_8h.html#a9">BOUNDARY</a>, <a class="code" href="ethernet_8c.html#a0">NE2000NextPktPtr</a> );
00431                 } <span class="keywordflow">else</span> {
00432                         <span class="comment">/* There has been an overflow after we have received the packet */</span>
00433                         <span class="comment">/* last time                                                                                                    */</span>
00434                 
00435                         ETH_DEBUGOUT(<span class="stringliteral">"???????????????????????????????????\r\n"</span>);
00436                         ETH_DEBUGOUT(<span class="stringliteral">"Unrecognized overflow!!\r\n"</span>);
00437                         ETH_DEBUGOUT(<span class="stringliteral">"いいいいいいいいいいいいいいいいい