ax88796_8c-source.html

国外牛人公开的ＡＶＲ代码

00480     <span class="comment">// clear remote byte count registers</span>
00481     ax88796Write(RBCR0, 0x00);
00482     ax88796Write(RBCR1, 0x00);
00483     
00484     <span class="comment">// if we were transmitting something</span>
00485     <span class="keywordflow">if</span>(cmdReg &amp; TXP)
00486     {
00487         <span class="comment">// check if the transmit completed</span>
00488         cmdReg = ax88796Read(ISR);
00489         <span class="keywordflow">if</span>((cmdReg &amp; PTX) || (cmdReg &amp; TXE))
00490             resend = 0;     <span class="comment">// transmit completed</span>
00491         <span class="keywordflow">else</span>
00492             resend = 1;     <span class="comment">// transmit was interrupted, must resend</span>
00493     }
00494     <span class="comment">// switch to loopback mode</span>
00495     ax88796Write(TCR, LB0);
00496     <span class="comment">// start the interface</span>
00497     ax88796Write(CR, (RD2|START));
00498     <span class="comment">// set boundary</span>
00499     ax88796Write(BNRY, RXSTART_INIT);
00500     <span class="comment">// go to page 1</span>
00501     ax88796Write(CR, (PS0|RD2|START));
00502     <span class="comment">// set current page register</span>
00503     ax88796Write(CPR, RXSTART_INIT+1);
00504     <span class="comment">// go to page 0</span>
00505     ax88796Write(CR, (RD2|START));
00506     <span class="comment">// clear the overflow int</span>
00507     ax88796Write(ISR, OVW);
00508     <span class="comment">// switch to normal (non-loopback mode)</span>
00509     ax88796Write(TCR, TCR_INIT);
00510 
00511     <span class="comment">// if previous transmit was interrupted, then resend</span>
00512     <span class="keywordflow">if</span>(resend)
00513         ax88796Write(CR, (RD2|TXP|START));
00514 
00515     <span class="comment">// recovery completed</span>
00516 }
00517 
00518 
00519 <span class="preprocessor">#define set_mdc     ax88796Write(MEMR,ax88796Read(MEMR)|0x01);</span>
00520 <span class="preprocessor"></span><span class="preprocessor">#define clr_mdc     ax88796Write(MEMR,ax88796Read(MEMR)&amp;0xFE);</span>
00521 <span class="preprocessor"></span>
00522 <span class="preprocessor">#define mii_clk     set_mdc; clr_mdc;                 </span>
00523 <span class="preprocessor"></span>                    
00524 <span class="preprocessor">#define set_mdir    ax88796Write(MEMR,ax88796Read(MEMR)|0x02);</span>
00525 <span class="preprocessor"></span><span class="preprocessor">#define clr_mdir    ax88796Write(MEMR,ax88796Read(MEMR)&amp;0xFD);</span>
00526 <span class="preprocessor"></span>                    
00527 <span class="preprocessor">#define set_mdo     ax88796Write(MEMR,ax88796Read(MEMR)|0x08)</span>
00528 <span class="preprocessor"></span><span class="preprocessor">#define clr_mdo     ax88796Write(MEMR,ax88796Read(MEMR)&amp;0xF7)</span>
00529 <span class="preprocessor"></span>
00530 <span class="preprocessor">#define mii_write   clr_mdo; mii_clk;   \</span>
00531 <span class="preprocessor">                    set_mdo; mii_clk;   \</span>
00532 <span class="preprocessor">                    clr_mdo; mii_clk;   \</span>
00533 <span class="preprocessor">                    set_mdo; mii_clk;</span>
00534 <span class="preprocessor"></span>
00535 <span class="preprocessor">#define mii_read    clr_mdo; mii_clk;   \</span>
00536 <span class="preprocessor">                    set_mdo; mii_clk;   \</span>
00537 <span class="preprocessor">                    set_mdo; mii_clk;   \</span>
00538 <span class="preprocessor">                    clr_mdo; mii_clk;</span>
00539 <span class="preprocessor"></span>
00540 <span class="preprocessor">#define mii_r_ta    mii_clk;            \</span>
00541 <span class="preprocessor"></span>
00542 <span class="preprocessor"></span><span class="preprocessor">#define mii_w_ta    set_mdo; mii_clk;   \</span>
00543 <span class="preprocessor">                    clr_mdo; mii_clk;</span>
00544 <span class="preprocessor"></span>            
00545 <span class="keywordtype">void</span> ax88796WriteMii(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> phyad,<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> regad,<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> mii_data)
00546 {
00547     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> mask8;
00548     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  i,mask16;
00549 
00550     mii_write;
00551  
00552     mask8 = 0x10;
00553     <span class="keywordflow">for</span>(i=0;i&lt;5;++i)
00554     {
00555         <span class="keywordflow">if</span>(mask8 &amp; phyad)
00556             set_mdo;
00557         <span class="keywordflow">else</span>
00558             clr_mdo;
00559         mii_clk;
00560         mask8 &gt;&gt;= 1;     
00561     }   
00562     mask8 = 0x10;
00563     <span class="keywordflow">for</span>(i=0;i&lt;5;++i)
00564     {
00565         <span class="keywordflow">if</span>(mask8 &amp; regad)
00566             set_mdo;
00567         <span class="keywordflow">else</span>
00568             clr_mdo;
00569         mii_clk;
00570         mask8 &gt;&gt;= 1;     
00571     }                       
00572     mii_w_ta;
00573  
00574     mask16 = 0x8000;
00575     <span class="keywordflow">for</span>(i=0;i&lt;16;++i)
00576     {
00577         <span class="keywordflow">if</span>(mask16 &amp; mii_data)
00578             set_mdo;
00579         <span class="keywordflow">else</span>
00580             clr_mdo;
00581         mii_clk;     
00582         mask16 &gt;&gt;= 1;    
00583     }               
00584 }
00585  
00586 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ax88796ReadMii(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> phyad,<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> regad)
00587 {
00588     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> mask8,i;
00589     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>  mask16,result16;
00590  
00591     mii_read;
00592 
00593     mask8 = 0x10;
00594     <span class="keywordflow">for</span>(i=0;i&lt;5;++i)
00595     {
00596         <span class="keywordflow">if</span>(mask8 &amp; phyad)
00597             set_mdo;
00598         <span class="keywordflow">else</span>
00599             clr_mdo;
00600         mii_clk;     
00601         mask8 &gt;&gt;= 1;
00602     }
00603     mask8 = 0x10;
00604     <span class="keywordflow">for</span>(i=0;i&lt;5;++i)
00605     {
00606         <span class="keywordflow">if</span>(mask8 &amp; regad)
00607             set_mdo;
00608         <span class="keywordflow">else</span>
00609             clr_mdo;
00610         mii_clk;
00611         mask8 &gt;&gt;= 1;
00612     }
00613             
00614     mii_r_ta;
00615  
00616     mask16 = 0x8000;
00617     result16 = 0x0000;
00618     <span class="keywordflow">for</span>(i=0;i&lt;16;++i)
00619     {
00620         mii_clk;
00621         <span class="keywordflow">if</span>(ax88796Read(MEMR) &amp; 0x04)
00622         {
00623             result16 |= mask16;
00624         }
00625         <span class="keywordflow">else</span>
00626         {
00627             <span class="keyword">asm</span> <span class="keyword">volatile</span> (<span class="stringliteral">"nop"</span>);
00628             <span class="keywordflow">break</span>;
00629         }
00630         mask16 &gt;&gt;= 1;
00631     }
00632     <span class="keywordflow">return</span> result16;
00633 }
00634 
00635 
00636 <span class="keywordtype">void</span> ax88796RegDump(<span class="keywordtype">void</span>)
00637 {
00638     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> result;
00639     result = ax88796Read(TR);
00640     
00641     rprintf(<span class="stringliteral">"Media State: "</span>);
00642     <span class="keywordflow">if</span>(!(result &amp; AUTOD))
00643         rprintf(<span class="stringliteral">"Autonegotiation\r\n"</span>);
00644     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(result &amp; RST_B)
00645         rprintf(<span class="stringliteral">"PHY in Reset   \r\n"</span>);
00646     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!(result &amp; RST_10B))
00647         rprintf(<span class="stringliteral">"10BASE-T       \r\n"</span>);
00648     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!(result &amp; RST_TXB))
00649         rprintf(<span class="stringliteral">"100BASE-T      \r\n"</span>);
00650                 
00651     <span class="comment">//rprintf("TR regsiter      : %x\r\n",result);</span>
00652     <span class="comment">//result = read_mii(0x10,0);</span>
00653     <span class="comment">//rprintf("MII regsiter 0x10: %x\r\n",result);</span>
00654 
00655     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"Page0: CR  BNRY PSR PST ISR TSR RSR MMR TR  GPI\r\n"</span>);
00656     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"       "</span>);
00657     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(CR));
00658     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00659     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(BNRY));
00660     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"   "</span>);
00661     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(PSTART));
00662     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00663     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(PSTOP));
00664     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00665     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(ISR));
00666     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00667     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(TSR));
00668     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00669     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(RSR));
00670     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00671     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(MEMR));
00672     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00673     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(TR));
00674     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00675     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(GPI));
00676     <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();
00677 
00678     ax88796Write(CR,ax88796Read(CR)|PS0);
00679 
00680     rprintf(<span class="stringliteral">"Page1: CR  PAR    CPR\r\n"</span>);
00681     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"       "</span>);
00682     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(CR));
00683     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"  "</span>);
00684     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR0));
00685     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR1));
00686     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR2));
00687     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR3));
00688     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR4));
00689     <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(ax88796Read(PAR5));
00690     <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" "</span>);
00691     <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(ax88796Read(CPR));
00692     
00693     ax88796Write(CR,ax88796Read(CR)&amp;~PS0);
00694 
00695     delay_ms(25);
00696 }
00697 
00698 <span class="comment">/*</span>
00699 <span class="comment">unsigned char ax88796ReceiveEmpty(void)</span>
00700 <span class="comment">{</span>
00701 <span class="comment">    unsigned char temp;</span>
00702 <span class="comment"></span>
00703 <span class="comment">    // read CPR from page 1</span>
00704 <span class="comment">    ax88796Write(CR,0x62);</span>
00705 <span class="comment">    temp = ax88796Read(CPR);</span>
00706 <span class="comment">    </span>
00707 <span class="comment">    // return to page 0</span>
00708 <span class="comment">    ax88796Write(CR,0x22);</span>
00709 <span class="comment">    </span>
00710 <span class="comment">    return ( ax88796Read(BNRY) == temp );</span>
00711 <span class="comment">    </span>
00712 <span class="comment">}*/</span>
00713 
00714 
00715 
00716 
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