prism2_8c-source.html

单片机的软件

00213 
00214     <span class="keywordflow">return</span> packetLength;
00215 }
00216 
00217 <span class="keywordtype">void</span> prism2InitPorts(<span class="keywordtype">void</span>)
00218 {
00219 <span class="preprocessor">#if NIC_CONNECTION == MEMORY_MAPPED</span>
00220 <span class="preprocessor"></span>    <span class="comment">// enable external SRAM interface - no wait states</span>
00221     sbi(MCUSR, SRE);
00222 <span class="preprocessor">#else</span>
00223 <span class="preprocessor"></span>    <span class="comment">// set address port to output</span>
00224     outb(PRISM2_ADDRESS_DDR, PRISM2_ADDRESS_MASK);
00225     outb(PRISM2_HADDRESS_DDR, PRISM2_HADDRESS_MASK);
00226     
00227     <span class="comment">// set data port to input with pull-ups</span>
00228     outb(PRISM2_DATA_DDR, 0x00);
00229     outb(PRISM2_DATA_PORT, 0xFF);
00230 
00231     <span class="comment">// initialize the control port read and write pins to de-asserted</span>
00232     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_IORD );
00233     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_IOWR );
00234     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_MEMRD );
00235     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_MEMWR );
00236     <span class="comment">// set the read and write pins to output</span>
00237     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_IORD );
00238     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_IOWR );
00239     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_MEMRD );
00240     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_MEMWR );
00241 <span class="preprocessor">#endif</span>
00242 <span class="preprocessor"></span>    <span class="comment">// set reset pin to output</span>
00243     sbi( PRISM2_RESET_DDR, PRISM2_RESET_PIN );
00244 
00245     <span class="comment">// clear -REG pin</span>
00246     sbi(DDRB, 6);
00247     cbi(PORTB, 6);
00248     <span class="comment">// setup IREQ pin</span>
00249     cbi(DDRB, 7);
00250     sbi(PORTB, 7);
00251 }
00252 
00253 <span class="keywordtype">void</span> prism2Init(<span class="keywordtype">void</span>)
00254 {
00255     u08 result;
00256     u16 buffer[20];
00257 
00258     rprintf(<span class="stringliteral">"Init ports\r\n"</span>);
00259     prism2InitPorts();
00260 
00261     <span class="comment">// assert hardware reset</span>
00262     sbi( PRISM2_RESET_PORT, PRISM2_RESET_PIN );
00263     <span class="comment">// wait</span>
00264     delay_ms(10);
00265     <span class="comment">// release hardware reset</span>
00266     cbi( PRISM2_RESET_PORT, PRISM2_RESET_PIN );
00267     delay_ms(100);
00268 
00269 <span class="comment">/*</span>
00270 <span class="comment">    // soft-reset card</span>
00271 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, 0x80);</span>
00272 <span class="comment">    delay_ms(10);</span>
00273 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, 0x00);</span>
00274 <span class="comment">    // wait until soft-reset is done</span>
00275 <span class="comment">    delay_ms(500);</span>
00276 <span class="comment"></span>
00277 <span class="comment">    // set 8-bit PCMCIA I/O mode</span>
00278 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x20);</span>
00279 <span class="comment"></span>
00280 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x04);</span>
00281 <span class="comment">    timerPause(1000);</span>
00282 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x00);</span>
00283 <span class="comment">*/</span>
00284     <span class="comment">// enable PCMCIA I/O mode</span>
00285     prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, prism2ReadMem(0x3E0+PCMCIA_ATTR_COR) | 0x01);
00286     prism2CardRegDump();
00287 
00288     rprintf(<span class="stringliteral">"Prism2 Initializing...\r\n"</span>);
00289     <span class="keywordflow">if</span>( (result = prism2Command(PRISM2_CMD_INIT,0)) )
00290     {
00291         rprintf(<span class="stringliteral">"Prism2 Initialization Failure\r\n"</span>);
00292         rprintf(<span class="stringliteral">"Result Code = %x\r\n"</span>,result);
00293     }
00294     
00295     rprintf(<span class="stringliteral">"Prism2 Initialized\r\n"</span>);
00296 
00297     <span class="comment">// set SSID</span>
00298     prism2SetSSID(<span class="stringliteral">"airdrop"</span>);
00299 
00300     <span class="comment">// set max packet size</span>
00301     buffer[0] = 0x0002;
00302     buffer[1] = PRISM2_RID_CNFMAXDATALEN;
00303     buffer[2] = 0x05DC;
00304     prism2WriteRID(PRISM2_RID_CNFMAXDATALEN, 0, buffer, 3);
00305 
00306     <span class="comment">// set operating mode / port type</span>
00307     buffer[0] = 0x0002;
00308     buffer[1] = PRISM2_RID_CNFPORTTYPE;
00309     <span class="comment">//buffer[2] = 0x0000; // IBSS</span>
00310     buffer[2] = 0x0001; <span class="comment">// BSS</span>
00311     prism2WriteRID(PRISM2_RID_CNFPORTTYPE, 0, buffer, 3);
00312 
00313     <span class="comment">// set channel</span>
00314 <span class="comment">//  buffer[0] = 0x0002;</span>
00315 <span class="comment">//  buffer[1] = 0xFC03;</span>
00316 <span class="comment">//  buffer[2] = 0x0001;</span>
00317 <span class="comment">//  prism2WriteRID(0xFC00, 0, buffer, 3);</span>
00318 
00319     <span class="comment">// enable the interface</span>
00320     prism2Command(PRISM2_CMD_ENABLE_MAC0,0);
00321 }
00322 
00323 <span class="keywordtype">void</span> prism2Off(<span class="keywordtype">void</span>)
00324 {
00325     <span class="comment">// turn off communication</span>
00326     prism2Command(PRISM2_CMD_DISABLE_MAC0,0);
00327     <span class="comment">// wait for all events to complete</span>
00328     delay_ms(100);
00329     <span class="comment">// reset card</span>
00330     prism2Command(PRISM2_CMD_INIT,0);
00331 }
00332 
00333 <span class="keywordtype">void</span> prism2GetMacAddress(u08* macaddr)
00334 {
00335     u16 buffer[5];
00336 
00337     <span class="comment">// read MAC address register</span>
00338     prism2ReadRID(PRISM2_RID_CNFOWNMACADDR, 0, buffer, 5);
00339 
00340     *macaddr++ = buffer[2];
00341     *macaddr++ = buffer[2]&gt;&gt;8;
00342     *macaddr++ = buffer[3];
00343     *macaddr++ = buffer[3]&gt;&gt;8;
00344     *macaddr++ = buffer[4];
00345     *macaddr++ = buffer[4]&gt;&gt;8;
00346 }
00347 
00348 <span class="keywordtype">void</span> prism2SetSSID(u08* ssid)
00349 {
00350     u16 buffer[12];
00351 
00352     <span class="comment">// prepare buffer for SSID write</span>
00353     buffer[0] = 0x0012;
00354     buffer[1] = PRISM2_RID_CNFDESIREDSSID;
00355     buffer[2] = strlen(ssid);
00356     <span class="comment">// copy ssid string to buffer</span>
00357     strcpy((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)&amp;buffer[3], ssid);
00358     <span class="comment">// write SSID</span>
00359     prism2WriteRID(PRISM2_RID_CNFDESIREDSSID, 0, buffer, buffer[0]);
00360 }
00361 
00362 <span class="keywordtype">void</span> prism2SetWEPKey(u08* wepkey)
00363 {
00364     u16 buffer[9];
00365 
00366     <span class="comment">// prepare buffer for SSID write</span>
00367     buffer[0] = 0x0008;
00368     buffer[1] = PRISM2_RID_CNFWEPDEFAULTKEY0;
00369     <span class="comment">// copy ssid string to buffer</span>
00370     strncpy((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)&amp;buffer[2], wepkey, 13);
00371     buffer[8] &amp;= 0x00FF;
00372     <span class="comment">// write SSID</span>
00373     prism2WriteRID(PRISM2_RID_CNFWEPDEFAULTKEY0, 0, buffer, buffer[0]);
00374 
00375     <span class="comment">// set WEP active</span>
00376     buffer[0] = 0x0002;
00377     buffer[1] = PRISM2_RID_CNFWEPFLAGS;
00378     buffer[2] = 0x0001;
00379     prism2WriteRID(PRISM2_RID_CNFWEPFLAGS, 0, buffer, buffer[0]);
00380     <span class="comment">// set WEP active</span>
00381     buffer[0] = 0x0002;
00382     buffer[1] = 0xfc2a;
00383     buffer[2] = 0x0001;
00384     prism2WriteRID(0xfc2a, 0, buffer, buffer[0]);
00385     <span class="comment">// set WEP active</span>
00386     buffer[0] = 0x0002;
00387     buffer[1] = 0xfc23;
00388     buffer[2] = 0x0000;
00389     prism2WriteRID(0xfc23, 0, buffer, buffer[0]);
00390 
00391 }
00392 
00393 u08 prism2Command(u16 cmd, u16 param0)
00394 {
00395     u16 result;
00396 
00397     <span class="comment">// wait until card not busy</span>
00398 <span class="comment">//  rprintf("PRISM_CMD: Wait until card ready\r\n");</span>
00399     <span class="keywordflow">while</span>(prism2Read16(PRISM2_REG_CMD) &amp; PRISM2_CMD_BUSY);
00400     
00401 <span class="comment">//  rprintf("PRISM_CMD: Issue Command = 0x%x\r\n", cmd);</span>
00402     prism2Write16(PRISM2_REG_PARAM0, param0);
00403     prism2Write16(PRISM2_REG_CMD, cmd);
00404     
00405     <span class="comment">// wait until card not busy</span>
00406 <span class="comment">//  rprintf("PRISM_CMD: Wait until card ready\r\n");</span>
00407     <span class="keywordflow">while</span>(prism2Read16(PRISM2_REG_CMD) &amp; PRISM2_CMD_BUSY);
00408     
00409     <span class="comment">// read event register - wait for command to complete</span>
00410 <span class="comment">//  rprintf("PRISM_CMD: Wait for command to complete\r\n");</span>
00411     <span class="keywordflow">while</span>(!(prism2Read16(PRISM2_REG_EVSTAT) &amp; PRISM2_EVENT_CMD));
00412 
00413     <span class="comment">// read status register</span>
00414     result = prism2Read16(PRISM2_REG_STATUS)&gt;&gt;8;
00415 <span class="comment">//  rprintf("PRISM_CMD: Result  = 0x%x\r\n", result&gt;&gt;8);</span>
00416 <span class="comment">//  rprintf("PRISM_CMD: CmdCode = 0x%x\r\n", result);</span>
00417     
00418     <span class="comment">// acknowledge event</span>
00419 <span class="comment">//  rprintf("PRISM_CMD: Ack command event\r\n");</span>
00420     prism2Write16(PRISM2_REG_EVACK, PRISM2_EVENT_CMD);
00421 
00422     <span class="comment">// return command result</span>
00423     <span class="keywordflow">return</span> result;
00424 }
00425 
00426 u08 prism2ReadRID(u16 <span class="keywordtype">id</span>, u16 offset, u16* data, u16 len)
00427 {
00428     prism2Command(PRISM2_CMD_ACCESS_RD, <span class="keywordtype">id</span>);
00429     <span class="keywordflow">return</span> prism2ReadBAP0(<span class="keywordtype">id</span>, offset, data, len);
00430 }
00431 
00432 u08 prism2WriteRID(u16 <span class="keywordtype">id</span>, u16 offset, u16* data, u16 len)
00433 {