cs8900_8c-source.html

avr应用测试程序

00169     cs8900Write16(CS8900_IO_PP_PTR, PP_SelfST);
00170     <span class="keywordflow">while</span>(!(cs8900Read16(CS8900_IO_PP_DATA_PORT0) &amp; INIT_DONE));
00171 
00172     <span class="comment">// set our MAC as Individual Address</span>
00173     cs8900WriteReg(PP_IA+0, (CS8900_MAC1&lt;&lt;8) + CS8900_MAC0 );
00174     cs8900WriteReg(PP_IA+2, (CS8900_MAC3&lt;&lt;8) + CS8900_MAC2 );
00175     cs8900WriteReg(PP_IA+4, (CS8900_MAC5&lt;&lt;8) + CS8900_MAC4 );
00176     <span class="comment">// configure the Physical Interface</span>
00177     cs8900WriteReg(PP_LineCTL, SERIAL_RX_ON | SERIAL_TX_ON);
00178     cs8900WriteReg(PP_RxCTL, RX_OK_ACCEPT | RX_IA_ACCEPT | RX_BROADCAST_ACCEPT );
00179 }
00180 
00181 <span class="keywordtype">void</span> cs8900Write(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data)
00182 {
00183     <span class="comment">// assert the address</span>
00184     outb(CS8900_ADDRESS_PORT, address | (inb(CS8900_ADDRESS_PORT)&amp;~CS8900_ADDRESS_MASK));
00185     <span class="comment">// set data bus as output</span>
00186     outb(CS8900_DATA_DDR, 0xFF);
00187     <span class="comment">// place data on bus</span>
00188     outb(CS8900_DATA_PORT, data);
00189     <span class="comment">// clock write pin</span>
00190     cbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN);
00191     nop();
00192     nop();
00193     nop();
00194     nop();
00195     sbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN);
00196     <span class="comment">// set data bus back to input with pullups enabled</span>
00197     outb(CS8900_DATA_DDR, 0x00);
00198     outb(CS8900_DATA_PORT, 0xFF);
00199 }
00200 
00201 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> cs8900Read(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address)
00202 {
00203     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data;
00204     <span class="comment">// assert the address</span>
00205     outb(CS8900_ADDRESS_PORT, address | (inb(CS8900_ADDRESS_PORT)&amp;~CS8900_ADDRESS_MASK));
00206     <span class="comment">// set data bus to input with pullups enabled</span>
00207     outb(CS8900_DATA_DDR, 0x00);
00208     outb(CS8900_DATA_PORT, 0xFF);
00209     <span class="comment">// assert read</span>
00210     cbi(CS8900_CONTROL_PORT, CS8900_CONTROL_READPIN);
00211     nop();
00212     nop();
00213     nop();
00214     nop();
00215     <span class="comment">// read in the data</span>
00216     data = inb( CS8900_DATA_PIN );
00217     <span class="comment">// negate read</span>
00218     sbi(CS8900_CONTROL_PORT, CS8900_CONTROL_READPIN);
00219     <span class="comment">// return data</span>
00220     <span class="keywordflow">return</span> data;
00221 }
00222 
00223 <span class="keywordtype">void</span> cs8900Write16(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> data)
00224 {
00225     cs8900Write(address+0, data);   
00226     cs8900Write(address+1, data&gt;&gt;8);    
00227 }
00228 
00229 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> cs8900Read16(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address)
00230 {
00231     <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> data;
00232     data =  cs8900Read(address+0);
00233     data |= cs8900Read(address+1)&lt;&lt;8;
00234     <span class="keywordflow">return</span> data;
00235 }
00236 
00237 <span class="comment">// writes a word in little-endian byte order to a specified PacketPage address</span>
00238 <span class="keywordtype">void</span> cs8900WriteReg(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> address, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> data)
00239 {
00240     cs8900Write16(CS8900_IO_PP_PTR, address);
00241     cs8900Write16(CS8900_IO_PP_DATA_PORT0, data);
00242 }
00243 
00244 <span class="comment">// reads a word in little-endian byte order from a specified PacketPage address</span>
00245 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> cs8900ReadReg(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> address)
00246 {
00247     cs8900Write16(CS8900_IO_PP_PTR, address);
00248     <span class="keywordflow">return</span> cs8900Read16(CS8900_IO_PP_DATA_PORT0);
00249 }
00250 
00251 <span class="comment">// copies bytes from MCU-memory to frame port</span>
00252 <span class="comment">// NOTES: * an odd number of byte may only be transfered</span>
00253 <span class="comment">//          if the frame is written to the end!</span>
00254 <span class="comment">//        * MCU-memory MUST start at word-boundary</span>
00255 
00256 <span class="keywordtype">void</span> cs8900CopyToFrame(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *source, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> size)
00257 {
00258     <span class="keywordflow">while</span>(size&gt;1)
00259     {
00260         cs8900Write16(CS8900_IO_RXTX_DATA_PORT0, *((<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>*)source));
00261         source += 2;
00262         size -= 2;
00263     }
00264     <span class="comment">// if odd num. of bytes...</span>
00265     <span class="comment">// write leftover byte (the LAN-controller ignores the highbyte)</span>
00266     <span class="keywordflow">if</span>(size)
00267         cs8900Write16(CS8900_IO_RXTX_DATA_PORT0, *(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)source);
00268 }
00269 
00270 <span class="comment">// copies bytes from frame port to MCU-memory</span>
00271 <span class="comment">// NOTES: * an odd number of byte may only be transfered</span>
00272 <span class="comment">//          if the frame is read to the end!</span>
00273 <span class="comment">//        * MCU-memory MUST start at word-boundary</span>
00274 
00275 <span class="keywordtype">void</span> cs8900CopyFromFrame(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *dest, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> size)
00276 {
00277     <span class="keywordflow">while</span>(size&gt;1)
00278     {
00279         *((<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> *)dest) = cs8900Read16(CS8900_IO_RXTX_DATA_PORT0);
00280         dest += 2;
00281         size -= 2;
00282     }
00283   
00284     <span class="comment">// check for leftover byte...</span>
00285     <span class="comment">// the LAN-Controller will return 0 for the highbyte</span>
00286     <span class="keywordflow">if</span>(size)    
00287         *(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)dest = cs8900Read16(CS8900_IO_RXTX_DATA_PORT0);
00288 }
00289 
00290 <span class="keywordtype">void</span> cs8900IORegDump(<span class="keywordtype">void</span>)
00291 {
00292     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"CS8900 I/O Registers\r\n"</span>);
00293     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" FRAME   ISQ  ADDR DATA0 DATA1\r\n"</span>);
00294     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"-------------------------------\r\n"</span>);
00295     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00296     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_RXTX_DATA_PORT0));
00297     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00298     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_ISQ));
00299     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00300     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_PTR));
00301     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00302     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_DATA_PORT0));
00303     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00304     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_DATA_PORT1));
00305     <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();
00306 }
00307 
00308 <span class="keywordtype">void</span> cs8900RegDump(<span class="keywordtype">void</span>)
00309 {
00310     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"CS8900 PacketPage Registers\r\n"</span>);
00311     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"CHIP ID: "</span>);
00312     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_ChipID));
00313     <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();
00314 
00315     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"PP_ISAIOB: "</span>);
00316     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_ISAIOB));
00317     <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();
00318 
00319     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"MAC addr: "</span>);
00320     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+0));
00321     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+2));
00322     <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+4));
00323     <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();
00324 }
00325 
<a name="l00326"></a><a class="code" href="group__nic.html#ga5">00326</a> <span class="keywordtype">void</span> <a class="code" href="group__nic.html#ga5">nicRegDump</a>(<span class="keywordtype">void</span>)
00327 {
00328     cs8900IORegDump();
00329     cs8900RegDump();
00330 }
00331 
00332 
00333 u08 cs8900LinkStatus(<span class="keywordtype">void</span>)
00334 {
00335     <span class="keywordflow">if</span>(cs8900ReadReg(PP_LineST) &amp; LINK_OK)
00336         <span class="keywordflow">return</span> 1;
00337     <span class="keywordflow">else</span>
00338         <span class="keywordflow">return</span> 0;
00339 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 29 03:41:07 2006 for Procyon AVRlib by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </small></address>
</body>
</html>