prism2_8c-source.html

国外牛人公开的ＡＶＲ代码

00214     <span class="comment">// begin data copy again at type field</span>
00215     prism2ReadBAP0(rxfid, 46+12+8, (u16*)&amp;packet[12], packetLength-6);
00216     <span class="comment">// ACK the receive event to finish up</span>
00217     prism2Write16(PRISM2_REG_EVACK, PRISM2_EVENT_RX);
00218 
00219     <span class="keywordflow">return</span> packetLength;
00220 }
00221 
00222 <span class="keywordtype">void</span> prism2InitPorts(<span class="keywordtype">void</span>)
00223 {
00224 <span class="preprocessor">#if NIC_CONNECTION == MEMORY_MAPPED</span>
00225 <span class="preprocessor"></span>    <span class="comment">// enable external SRAM interface - no wait states</span>
00226     sbi(MCUSR, SRE);
00227 <span class="preprocessor">#else</span>
00228 <span class="preprocessor"></span>    <span class="comment">// set address port to output</span>
00229     outb(PRISM2_ADDRESS_DDR, PRISM2_ADDRESS_MASK);
00230     outb(PRISM2_HADDRESS_DDR, PRISM2_HADDRESS_MASK);
00231     
00232     <span class="comment">// set data port to input with pull-ups</span>
00233     outb(PRISM2_DATA_DDR, 0x00);
00234     outb(PRISM2_DATA_PORT, 0xFF);
00235 
00236     <span class="comment">// initialize the control port read and write pins to de-asserted</span>
00237     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_IORD );
00238     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_IOWR );
00239     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_MEMRD );
00240     sbi( PRISM2_CONTROL_PORT, PRISM2_CONTROL_MEMWR );
00241     <span class="comment">// set the read and write pins to output</span>
00242     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_IORD );
00243     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_IOWR );
00244     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_MEMRD );
00245     sbi( PRISM2_CONTROL_DDR, PRISM2_CONTROL_MEMWR );
00246 <span class="preprocessor">#endif</span>
00247 <span class="preprocessor"></span>    <span class="comment">// set reset pin to output</span>
00248     sbi( PRISM2_RESET_DDR, PRISM2_RESET_PIN );
00249 
00250     <span class="comment">// clear -REG pin</span>
00251     sbi(DDRB, 6);
00252     cbi(PORTB, 6);
00253     <span class="comment">// setup IREQ pin</span>
00254     cbi(DDRB, 7);
00255     sbi(PORTB, 7);
00256 }
00257 
00258 <span class="keywordtype">void</span> prism2Init(<span class="keywordtype">void</span>)
00259 {
00260     u08 result;
00261     u16 buffer[20];
00262 
00263     rprintf(<span class="stringliteral">"Init ports\r\n"</span>);
00264     prism2InitPorts();
00265 
00266     <span class="comment">// assert hardware reset</span>
00267     sbi( PRISM2_RESET_PORT, PRISM2_RESET_PIN );
00268     <span class="comment">// wait</span>
00269     delay_ms(10);
00270     <span class="comment">// release hardware reset</span>
00271     cbi( PRISM2_RESET_PORT, PRISM2_RESET_PIN );
00272     delay_ms(100);
00273 
00274 <span class="comment">/*</span>
00275 <span class="comment">    // soft-reset card</span>
00276 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, 0x80);</span>
00277 <span class="comment">    delay_ms(10);</span>
00278 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, 0x00);</span>
00279 <span class="comment">    // wait until soft-reset is done</span>
00280 <span class="comment">    delay_ms(500);</span>
00281 <span class="comment"></span>
00282 <span class="comment">    // set 8-bit PCMCIA I/O mode</span>
00283 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x20);</span>
00284 <span class="comment"></span>
00285 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x04);</span>
00286 <span class="comment">    timerPause(1000);</span>
00287 <span class="comment">    prism2WriteMem(0x3E0+PCMCIA_ATTR_CSR, 0x00);</span>
00288 <span class="comment">*/</span>
00289     <span class="comment">// enable PCMCIA I/O mode</span>
00290     prism2WriteMem(0x3E0+PCMCIA_ATTR_COR, prism2ReadMem(0x3E0+PCMCIA_ATTR_COR) | 0x01);
00291     prism2CardRegDump();
00292 
00293     rprintf(<span class="stringliteral">"Prism2 Initializing...\r\n"</span>);
00294     <span class="keywordflow">if</span>( (result = prism2Command(PRISM2_CMD_INIT,0)) )
00295     {
00296         rprintf(<span class="stringliteral">"Prism2 Initialization Failure\r\n"</span>);
00297         rprintf(<span class="stringliteral">"Result Code = %x\r\n"</span>,result);
00298     }
00299     
00300     rprintf(<span class="stringliteral">"Prism2 Initialized\r\n"</span>);
00301 
00302     <span class="comment">// set SSID</span>
00303     prism2SetSSID(<span class="stringliteral">"airdrop"</span>);
00304 
00305     <span class="comment">// set max packet size</span>
00306     buffer[0] = 0x0002;
00307     buffer[1] = PRISM2_RID_CNFMAXDATALEN;
00308     buffer[2] = 0x05DC;
00309     prism2WriteRID(PRISM2_RID_CNFMAXDATALEN, 0, buffer, 3);
00310 
00311     <span class="comment">// set operating mode / port type</span>
00312     buffer[0] = 0x0002;
00313     buffer[1] = PRISM2_RID_CNFPORTTYPE;
00314     <span class="comment">//buffer[2] = 0x0000; // IBSS</span>
00315     buffer[2] = 0x0001; <span class="comment">// BSS</span>
00316     prism2WriteRID(PRISM2_RID_CNFPORTTYPE, 0, buffer, 3);
00317 
00318     <span class="comment">// set channel</span>
00319 <span class="comment">//  buffer[0] = 0x0002;</span>
00320 <span class="comment">//  buffer[1] = 0xFC03;</span>
00321 <span class="comment">//  buffer[2] = 0x0001;</span>
00322 <span class="comment">//  prism2WriteRID(0xFC00, 0, buffer, 3);</span>
00323 
00324     <span class="comment">// enable the interface</span>
00325     prism2Command(PRISM2_CMD_ENABLE_MAC0,0);
00326 }
00327 
00328 <span class="keywordtype">void</span> prism2Off(<span class="keywordtype">void</span>)
00329 {
00330     <span class="comment">// turn off communication</span>
00331     prism2Command(PRISM2_CMD_DISABLE_MAC0,0);
00332     <span class="comment">// wait for all events to complete</span>
00333     delay_ms(100);
00334     <span class="comment">// reset card</span>
00335     prism2Command(PRISM2_CMD_INIT,0);
00336 }
00337 
00338 <span class="keywordtype">void</span> prism2GetMacAddress(u08* macaddr)
00339 {
00340     u16 buffer[5];
00341 
00342     <span class="comment">// read MAC address register</span>
00343     prism2ReadRID(PRISM2_RID_CNFOWNMACADDR, 0, buffer, 5);
00344 
00345     *macaddr++ = buffer[2];
00346     *macaddr++ = buffer[2]&gt;&gt;8;
00347     *macaddr++ = buffer[3];
00348     *macaddr++ = buffer[3]&gt;&gt;8;
00349     *macaddr++ = buffer[4];
00350     *macaddr++ = buffer[4]&gt;&gt;8;
00351 }
00352 
00353 <span class="keywordtype">void</span> prism2SetSSID(u08* ssid)
00354 {
00355     u16 buffer[12];
00356 
00357     <span class="comment">// prepare buffer for SSID write</span>
00358     buffer[0] = 0x0012;
00359     buffer[1] = PRISM2_RID_CNFDESIREDSSID;
00360     buffer[2] = strlen(ssid);
00361     <span class="comment">// copy ssid string to buffer</span>
00362     strcpy((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)&amp;buffer[3], ssid);
00363     <span class="comment">// write SSID</span>
00364     prism2WriteRID(PRISM2_RID_CNFDESIREDSSID, 0, buffer, buffer[0]);
00365 }
00366 
00367 <span class="keywordtype">void</span> prism2SetWEPKey(u08* wepkey)
00368 {
00369     u16 buffer[9];
00370 
00371     <span class="comment">// prepare buffer for SSID write</span>
00372     buffer[0] = 0x0008;
00373     buffer[1] = PRISM2_RID_CNFWEPDEFAULTKEY0;
00374     <span class="comment">// copy ssid string to buffer</span>
00375     strncpy((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)&amp;buffer[2], wepkey, 13);
00376     buffer[8] &amp;= 0x00FF;
00377     <span class="comment">// write SSID</span>
00378     prism2WriteRID(PRISM2_RID_CNFWEPDEFAULTKEY0, 0, buffer, buffer[0]);
00379 
00380     <span class="comment">// set WEP active</span>
00381     buffer[0] = 0x0002;
00382     buffer[1] = PRISM2_RID_CNFWEPFLAGS;
00383     buffer[2] = 0x0001;
00384     prism2WriteRID(PRISM2_RID_CNFWEPFLAGS, 0, buffer, buffer[0]);
00385     <span class="comment">// set WEP active</span>
00386     buffer[0] = 0x0002;
00387     buffer[1] = 0xfc2a;
00388     buffer[2] = 0x0001;
00389     prism2WriteRID(0xfc2a, 0, buffer, buffer[0]);
00390     <span class="comment">// set WEP active</span>
00391     buffer[0] = 0x0002;
00392     buffer[1] = 0xfc23;
00393     buffer[2] = 0x0000;
00394     prism2WriteRID(0xfc23, 0, buffer, buffer[0]);
00395 
00396 }
00397 
00398 u08 prism2Command(u16 cmd, u16 param0)
00399 {
00400     u16 result;
00401 
00402     <span class="comment">// wait until card not busy</span>
00403 <span class="comment">//  rprintf("PRISM_CMD: Wait until card ready\r\n");</span>
00404     <span class="keywordflow">while</span>(prism2Read16(PRISM2_REG_CMD) &amp; PRISM2_CMD_BUSY);
00405     
00406 <span class="comment">//  rprintf("PRISM_CMD: Issue Command = 0x%x\r\n", cmd);</span>
00407     prism2Write16(PRISM2_REG_PARAM0, param0);
00408     prism2Write16(PRISM2_REG_CMD, cmd);
00409     
00410     <span class="comment">// wait until card not busy</span>
00411 <span class="comment">//  rprintf("PRISM_CMD: Wait until card ready\r\n");</span>
00412     <span class="keywordflow">while</span>(prism2Read16(PRISM2_REG_CMD) &amp; PRISM2_CMD_BUSY);
00413     
00414     <span class="comment">// read event register - wait for command to complete</span>
00415 <span class="comment">//  rprintf("PRISM_CMD: Wait for command to complete\r\n");</span>
00416     <span class="keywordflow">while</span>(!(prism2Read16(PRISM2_REG_EVSTAT) &amp; PRISM2_EVENT_CMD));
00417 
00418     <span class="comment">// read status register</span>
00419     result = prism2Read16(PRISM2_REG_STATUS)&gt;&gt;8;
00420 <span class="comment">//  rprintf("PRISM_CMD: Result  = 0x%x\r\n", result&gt;&gt;8);</span>
00421 <span class="comment">//  rprintf("PRISM_CMD: CmdCode = 0x%x\r\n", result);</span>
00422     
00423     <span class="comment">// acknowledge event</span>
00424 <span class="comment">//  rprintf("PRISM_CMD: Ack command event\r\n");</span>
00425     prism2Write16(PRISM2_REG_EVACK, PRISM2_EVENT_CMD);
00426 
00427     <span class="comment">// return command result</span>
00428     <span class="keywordflow">return</span> result;
00429 }
00430 
00431 u08 prism2ReadRID(u16 <span class="keywordtype">id</span>, u16 offset, u16* data, u16 len)
00432 {
00433     prism2Command(PRISM2_CMD_ACCESS_RD, <span class="keywordtype">id</span>);
00434     <span class="keywordflow">return</span> prism2ReadBAP0(<span class="keywordtype">id</span>, offset, data, len);
00435 }