rtl8019_8h-source.html

avr应用测试程序

00095 <span class="preprocessor"></span><span class="preprocessor">#define  RDC        0x40</span>
00096 <span class="preprocessor"></span><span class="preprocessor">#define  OVW        0x10</span>
00097 <span class="preprocessor"></span><span class="preprocessor">#define  RXE        0x08</span>
00098 <span class="preprocessor"></span><span class="preprocessor">#define  TXE        0x04</span>
00099 <span class="preprocessor"></span><span class="preprocessor">#define  PTX        0x02</span>
00100 <span class="preprocessor"></span><span class="preprocessor">#define  PRX        0x01</span>
00101 <span class="preprocessor"></span><span class="comment">// RTL8019/NE2000 RCR Register Bit Definitions</span>
00102 <span class="preprocessor">#define  MON        0x20</span>
00103 <span class="preprocessor"></span><span class="preprocessor">#define  PRO        0x10</span>
00104 <span class="preprocessor"></span><span class="preprocessor">#define  AM         0x08</span>
00105 <span class="preprocessor"></span><span class="preprocessor">#define  AB         0x04</span>
00106 <span class="preprocessor"></span><span class="preprocessor">#define  AR         0x02</span>
00107 <span class="preprocessor"></span><span class="preprocessor">#define  SEP        0x01</span>
00108 <span class="preprocessor"></span><span class="comment">// RTL8019/NE2000 TCR Register Bit Definitions</span>
00109 <span class="preprocessor">#define  FDU        0x80    // full duplex</span>
00110 <span class="preprocessor"></span><span class="preprocessor">#define  PD         0x40    // pad disable</span>
00111 <span class="preprocessor"></span><span class="preprocessor">#define  RLO        0x20    // retry of late collisions</span>
00112 <span class="preprocessor"></span><span class="preprocessor">#define  LB1        0x04    // loopback 1</span>
00113 <span class="preprocessor"></span><span class="preprocessor">#define  LB0        0x02    // loopback 0</span>
00114 <span class="preprocessor"></span><span class="preprocessor">#define  CRC        0x01    // generate CRC</span>
00115 <span class="preprocessor"></span><span class="comment">// RTL8019 EECR Register Bit Definitions</span>
00116 <span class="preprocessor">#define  EEM1       0x80</span>
00117 <span class="preprocessor"></span><span class="preprocessor">#define  EEM0       0x40</span>
00118 <span class="preprocessor"></span><span class="preprocessor">#define  EECS       0x08</span>
00119 <span class="preprocessor"></span><span class="preprocessor">#define  EESK       0x04</span>
00120 <span class="preprocessor"></span><span class="preprocessor">#define  EEDI       0x02</span>
00121 <span class="preprocessor"></span><span class="preprocessor">#define  EEDO       0x01</span>
00122 <span class="preprocessor"></span>
00123 
00124 <span class="comment">// RTL8019 Initial Register Values</span>
00125 <span class="comment">// RCR : INT trigger active high and Accept Broadcast ENET packets</span>
00126 <span class="preprocessor">#define RCR_INIT        (AB)</span>
00127 <span class="preprocessor"></span><span class="preprocessor">#define DCR_INIT        0x58    // FIFO thrsh. 8bits, 8bit DMA transfer</span>
00128 <span class="preprocessor"></span><span class="comment">// TCR : default transmit operation - CRC is generated</span>
00129 <span class="preprocessor">#define TCR_INIT        0x00</span>
00130 <span class="preprocessor"></span><span class="comment">// IMR : interrupt enabled for receive and overrun events</span>
00131 <span class="preprocessor">#define IMR_INIT        0x11    // PRX and OVW interrupt enabled</span>
00132 <span class="preprocessor"></span><span class="comment">// buffer boundaries</span>
00133 <span class="comment">//  transmit has 6 256-byte pages</span>
00134 <span class="comment">//  receive has 26 256-byte pages</span>
00135 <span class="comment">//  entire available packet buffer space is allocated</span>
00136 <span class="preprocessor">#define TXSTART_INIT    0x40</span>
00137 <span class="preprocessor"></span><span class="preprocessor">#define RXSTART_INIT    0x46</span>
00138 <span class="preprocessor"></span><span class="preprocessor">#define RXSTOP_INIT     0x60</span>
00139 <span class="preprocessor"></span>
00140 <span class="comment">// Ethernet constants</span>
00141 <span class="preprocessor">#define ETHERNET_MIN_PACKET_LENGTH  0x3C</span>
00142 <span class="preprocessor"></span><span class="comment">//#define ETHERNET_HEADER_LENGTH        0x0E</span>
00143 
00144 <span class="comment">// offsets into ax88796 ethernet packet header</span>
00145 <span class="preprocessor">#define  PKTHEADER_STATUS       0x00    // packet status</span>
00146 <span class="preprocessor"></span><span class="preprocessor">#define  PKTHEADER_NEXTPAGE     0x01    // next buffer page</span>
00147 <span class="preprocessor"></span><span class="preprocessor">#define  PKTHEADER_PKTLENL      0x02    // packet length low</span>
00148 <span class="preprocessor"></span><span class="preprocessor">#define  PKTHEADER_PKTLENH      0x03    // packet length high</span>
00149 <span class="preprocessor"></span>
00150 
00151 <span class="comment">// functions</span>
00152 <span class="preprocessor">#include "<a class="code" href="nic_8h.html">nic.h</a>"</span>
00153 
00154 <span class="comment">// setup ports for I/O</span>
00155 <span class="keywordtype">void</span> rtl8019SetupPorts(<span class="keywordtype">void</span>);
00156 
00157 <span class="comment">// read ax88796 register</span>
00158 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> rtl8019Read(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address);
00159 
00160 <span class="comment">// write ax88796 register</span>
00161 <span class="keywordtype">void</span> rtl8019Write(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> address, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data);
00162 
00163 <span class="comment">// initialize the ethernet interface for transmit/receive</span>
00164 <span class="keywordtype">void</span> rtl8019Init(<span class="keywordtype">void</span>);
00165 
00166 <span class="comment">// packet transmit functions</span>
00167 <span class="keywordtype">void</span> rtl8019BeginPacketSend(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> packetLength);
00168 <span class="keywordtype">void</span> rtl8019SendPacketData(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> * localBuffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length);
00169 <span class="keywordtype">void</span> rtl8019EndPacketSend(<span class="keywordtype">void</span>);
00170 
00171 <span class="comment">// packet receive functions</span>
00172 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rtl8019BeginPacketRetreive(<span class="keywordtype">void</span>);
00173 <span class="keywordtype">void</span> rtl8019RetreivePacketData(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> * localBuffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length);
00174 <span class="keywordtype">void</span> rtl8019EndPacketRetreive(<span class="keywordtype">void</span>);
00175 
00176 <span class="comment">// Processes RTL8019 interrupts.</span>
00177 <span class="comment">// Currently, this function looks only for a receive overflow condition.</span>
00178 <span class="comment">// The function need not be called in response to an interrupt,</span>
00179 <span class="comment">// but can be executed just before checking the receive buffer for incoming packets.</span>
00180 <span class="keywordtype">void</span> rtl8019ProcessInterrupt(<span class="keywordtype">void</span>);
00181 
00182 <span class="comment">// execute procedure for recovering from a receive overflow</span>
00183 <span class="comment">// this should be done when the receive memory fills up with packets</span>
00184 <span class="keywordtype">void</span> rtl8019ReceiveOverflowRecover(<span class="keywordtype">void</span>);
00185 
00186 <span class="comment">// formatted print of all important RTL8019 registers</span>
00187 <span class="keywordtype">void</span> rtl8019RegDump(<span class="keywordtype">void</span>);
00188 
00189 <span class="preprocessor">#endif</span>
00190 <span class="preprocessor"></span><span class="comment">//@}</span>
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