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<!DOCTYPE <h <t <link </head><body> <!-- <div <div <a <h 00002 00003 00004 00005 00006 00007 00008 00009 00010 00011 00012 00013 00014 00015 00016 00017 00018 00019 00020 00021 00022 00023 <a 00025 { 00026 cs8900Init(); 00027 } 00028 <a 00030 { 00031 00032 00033 00034 00035 00036 00037 00038 00039 00040 00041 { 00042 00043 00044 timeout--; 00045 } 00046 00047 00048 00049 00050 } 00051 <a 00053 { 00054 00055 00056 00057 00058 00059 00060 00061 00062 00063 00064 { 00065 00066 00067 } 00068 00069 00070 00071 00072 00073 00074 } 00075 00076 00077 { 00078 00079 00080 00081 00082 00083 } 00084 00085 00086 { 00087 00088 00089 00090 00091 } 00092 00093 00094 { 00095 00096 00097 00098 00099 00100 00101 { 00102 00103 } 00104 00105 00106 00107 00108 00109 00110 00111 00112 00113 00114 } 00115 00116 00117 { 00118 00119 } 00120 00121 00122 { 00123 00124 00125 } 00126 00127 00128 00129 00130 { 00131 00132 00133 sbi(MCUSR, SRE); 00134 00135 00136 00137 00138 00139 00140 00141 00142 00143 00144 00145 00146 00147 00148 00149 00150 00151 } 00152 00153 00154 { 00155 00156 00157 00158 00159 00160 delay_ms(10); 00161 00162 00163 delay_ms(10); 00164 00165 00166 00167 00168 00169 00170 00171 00172 00173 00174 00175 00176 00177 00178 00179 } 00180 00181 00182 { 00183 00184 00185 00186 00187 00188 00189 00190 00191 nop(); 00192 nop(); 00193 nop(); 00194 nop(); 00195 00196 00197 00198 00199 } 00200 00201 00202 { 00203 00204 00205 00206 00207 00208 00209 00210 00211 nop(); 00212 nop(); 00213 nop(); 00214 nop(); 00215 00216 00217 00218 00219 00220 00221 } 00222 00223 00224 { 00225 00226 00227 } 00228 00229 00230 { 00231 00232 00233 00234 00235 } 00236 00237 00238 00239 { 00240 00241 00242 } 00243 00244 00245 00246 { 00247 00248 00249 } 00250 00251 00252 00253 00254 00255 00256 00257 { 00258 00259 { 00260 00261 source += 2; 00262 size -= 2; 00263 } 00264 00265 00266 00267 00268 } 00269 00270 00271 00272 00273 00274 00275 00276 { 00277 00278 { 00279 00280 dest += 2; 00281 size -= 2; 00282 } 00283 00284 00285 00286 00287 00288 } 00289 00290 00291 { 00292 00293 00294 00295 00296 00297 00298 00299 00300 00301 00302 00303 00304 00305 00306 } 00307 00308 00309 { 00310 00311 00312 00313 00314 00315 00316 00317 00318 00319 00320 00321 00322 00323 00324 } 00325 <a 00327 { 00328 00329 cs8900RegDump(); 00330 } 00331 00332 00333 00334 { 00335 00336 00337 00338 00339 } </ <a <img </body> </html>

HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> tml><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> itle>Procyon AVRlib: net/cs8900.c Source File</title> href="dox.css" rel="stylesheet" type="text/css"> Generated by Doxygen 1.4.2 --> class="qindex"><a class="qindex" href="main.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="annotated.html">Data Structures</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Data Fields</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related Pages</a></div> class="nav"> class="el" href="dir_000001.html">net</a></div> 1>cs8900.c</h1><a href="cs8900_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 /*! \file cs8900.c \brief Crystal CS8900 Ethernet Interface Driver. */ //***************************************************************************** // // File Name : 'cs8900.c' // Title : Crystal CS8900 Ethernet Interface Driver // Author : Pascal Stang // Created : 11/7/2004 // Revised : 11/7/2004 // Version : 0.1 // Target MCU : Atmel AVR series // Editor Tabs : 4 // //***************************************************************************** #include "<a class="code" href="global_8h.html">global.h</a>" #include "<a class="code" href="timer_8h.html">timer.h</a>" #include "<a class="code" href="rprintf_8h.html">rprintf.h</a>" #include "<a class="code" href="cs8900_8h.html">cs8900.h</a>" // include configuration #include "<a class="code" href="cs8900conf_8h.html">cs8900conf.h</a>" name="l00024"></a><a class="code" href="group__nic.html#ga0">00024</a> void <a class="code" href="group__nic.html#ga0">nicInit</a>(void) name="l00029"></a><a class="code" href="group__nic.html#ga1">00029</a> void <a class="code" href="group__nic.html#ga1">nicSend</a>(unsigned int len, unsigned char* packet) u08 timeout = 15; // request space in CS8900's on-chip memory for storing an outgoing frame cs8900Write16(CS8900_IO_TXCMD, TX_START_ALL_BYTES); cs8900Write16(CS8900_IO_TXLENGTH, len); // check if CS8900 is ready to accept the frame we want to send // (timeout after 1.5ms since it should only take 1.25ms to // finish sending previous frame. If we timeout, it's probably // because there's no link, no ethernet cable.) while(!(cs8900ReadReg(PP_BusST) & READY_FOR_TX_NOW) && timeout) // wait 100us delay_us(100); // write packet data bytes cs8900CopyToFrame(packet, len); // packet is automatically sent upon completion of above write name="l00052"></a><a class="code" href="group__nic.html#ga2">00052</a> unsigned int <a class="code" href="group__nic.html#ga2">nicPoll</a>(unsigned int maxlen, unsigned char* packet) unsigned int packetLength; packetLength = cs8900BeginPacketRetreive(); // if there's no packet or an error - exit without ending the operation if( !packetLength ) return 0; // drop anything too big for the buffer if( packetLength > maxlen ) cs8900EndPacketRetreive(); return 0; // copy the packet data into the packet buffer cs8900RetreivePacketData( packet, packetLength ); cs8900EndPacketRetreive(); return packetLength; void nicGetMacAddress(u08* macaddr) // read MAC address registers // TODO: check byte order here! *((unsigned short*)(macaddr+0)) = cs8900ReadReg(PP_IA+0); *((unsigned short*)(macaddr+2)) = cs8900ReadReg(PP_IA+2); *((unsigned short*)(macaddr+4)) = cs8900ReadReg(PP_IA+4); void nicSetMacAddress(u08* macaddr) // write MAC address registers cs8900WriteReg(PP_IA+0, (macaddr[1]<<8) + macaddr[0] ); cs8900WriteReg(PP_IA+2, (macaddr[3]<<8) + macaddr[2] ); cs8900WriteReg(PP_IA+4, (macaddr[5]<<8) + macaddr[4] ); unsigned int cs8900BeginPacketRetreive(void) unsigned short status; // check RxEvent status = cs8900ReadReg(PP_RxEvent); if( !((status&RX_OK)||(status&RX_IA)||(status&RX_BROADCAST)) ) return 0; // return cs8900ReadReg(PP_RxFrameByteCnt); // read RxStatus high-byte first status = cs8900Read(CS8900_IO_RXTX_DATA_PORT0+1)<<8; status |= cs8900Read(CS8900_IO_RXTX_DATA_PORT0+0); // read packet length high-byte first status = cs8900Read(CS8900_IO_RXTX_DATA_PORT0+1)<<8; status |= cs8900Read(CS8900_IO_RXTX_DATA_PORT0+0); return status; void cs8900RetreivePacketData(u08* packet, unsigned int packetLength ) cs8900CopyFromFrame(packet, packetLength); void cs8900EndPacketRetreive(void) // dummy read first four bytes //cs8900CopyFromFrame(packet, 4); void cs8900InitPorts(void) #if MEMORY_MAPPED_NIC == 1 // enable external SRAM interface - no wait states #else // set address port to output outb(CS8900_ADDRESS_DDR, CS8900_ADDRESS_MASK); // set data port to input with pull-ups outb(CS8900_DATA_DDR, 0x00); outb(CS8900_DATA_PORT, 0xFF); // initialize the control port read and write pins to de-asserted sbi( CS8900_CONTROL_PORT, CS8900_CONTROL_READPIN ); sbi( CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN ); // set the read and write pins to output sbi( CS8900_CONTROL_DDR, CS8900_CONTROL_READPIN ); sbi( CS8900_CONTROL_DDR, CS8900_CONTROL_WRITEPIN ); #endif // set reset pin to output sbi( CS8900_RESET_DDR, CS8900_RESET_PIN ); void cs8900Init(void) cs8900InitPorts(); // assert hardware reset sbi( CS8900_RESET_PORT, CS8900_RESET_PIN ); // wait // release hardware reset cbi( CS8900_RESET_PORT, CS8900_RESET_PIN ); // Reset the Ethernet-Controller cs8900Write16(CS8900_IO_PP_PTR, PP_SelfCTL); cs8900Write16(CS8900_IO_PP_DATA_PORT0, POWER_ON_RESET); // wait until chip-reset is done cs8900Write16(CS8900_IO_PP_PTR, PP_SelfST); while(!(cs8900Read16(CS8900_IO_PP_DATA_PORT0) & INIT_DONE)); // set our MAC as Individual Address cs8900WriteReg(PP_IA+0, (CS8900_MAC1<<8) + CS8900_MAC0 ); cs8900WriteReg(PP_IA+2, (CS8900_MAC3<<8) + CS8900_MAC2 ); cs8900WriteReg(PP_IA+4, (CS8900_MAC5<<8) + CS8900_MAC4 ); // configure the Physical Interface cs8900WriteReg(PP_LineCTL, SERIAL_RX_ON | SERIAL_TX_ON); cs8900WriteReg(PP_RxCTL, RX_OK_ACCEPT | RX_IA_ACCEPT | RX_BROADCAST_ACCEPT ); void cs8900Write(unsigned char address, unsigned char data) // assert the address outb(CS8900_ADDRESS_PORT, address | (inb(CS8900_ADDRESS_PORT)&~CS8900_ADDRESS_MASK)); // set data bus as output outb(CS8900_DATA_DDR, 0xFF); // place data on bus outb(CS8900_DATA_PORT, data); // clock write pin cbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN); sbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN); // set data bus back to input with pullups enabled outb(CS8900_DATA_DDR, 0x00); outb(CS8900_DATA_PORT, 0xFF); unsigned char cs8900Read(unsigned char address) unsigned char data; // assert the address outb(CS8900_ADDRESS_PORT, address | (inb(CS8900_ADDRESS_PORT)&~CS8900_ADDRESS_MASK)); // set data bus to input with pullups enabled outb(CS8900_DATA_DDR, 0x00); outb(CS8900_DATA_PORT, 0xFF); // assert read cbi(CS8900_CONTROL_PORT, CS8900_CONTROL_READPIN); // read in the data data = inb( CS8900_DATA_PIN ); // negate read sbi(CS8900_CONTROL_PORT, CS8900_CONTROL_READPIN); // return data return data; void cs8900Write16(unsigned char address, unsigned short data) cs8900Write(address+0, data); cs8900Write(address+1, data>>8); unsigned short cs8900Read16(unsigned char address) unsigned short data; data = cs8900Read(address+0); data |= cs8900Read(address+1)<<8; return data; // writes a word in little-endian byte order to a specified PacketPage address void cs8900WriteReg(unsigned short address, unsigned short data) cs8900Write16(CS8900_IO_PP_PTR, address); cs8900Write16(CS8900_IO_PP_DATA_PORT0, data); // reads a word in little-endian byte order from a specified PacketPage address unsigned short cs8900ReadReg(unsigned short address) cs8900Write16(CS8900_IO_PP_PTR, address); return cs8900Read16(CS8900_IO_PP_DATA_PORT0); // copies bytes from MCU-memory to frame port // NOTES: * an odd number of byte may only be transfered // if the frame is written to the end! // * MCU-memory MUST start at word-boundary void cs8900CopyToFrame(unsigned char *source, unsigned short size) while(size>1) cs8900Write16(CS8900_IO_RXTX_DATA_PORT0, *((unsigned short*)source)); // if odd num. of bytes... // write leftover byte (the LAN-controller ignores the highbyte) if(size) cs8900Write16(CS8900_IO_RXTX_DATA_PORT0, *(unsigned char*)source); // copies bytes from frame port to MCU-memory // NOTES: * an odd number of byte may only be transfered // if the frame is read to the end! // * MCU-memory MUST start at word-boundary void cs8900CopyFromFrame(unsigned char *dest, unsigned short size) while(size>1) *((unsigned short *)dest) = cs8900Read16(CS8900_IO_RXTX_DATA_PORT0); // check for leftover byte... // the LAN-Controller will return 0 for the highbyte if(size) *(unsigned char *)dest = cs8900Read16(CS8900_IO_RXTX_DATA_PORT0); void cs8900IORegDump(void) <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("CS8900 I/O Registers\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" FRAME ISQ ADDR DATA0 DATA1\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("-------------------------------\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_RXTX_DATA_PORT0)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_ISQ)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_PTR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_DATA_PORT0)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900Read16(CS8900_IO_PP_DATA_PORT1)); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); void cs8900RegDump(void) <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("CS8900 PacketPage Registers\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("CHIP ID: "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_ChipID)); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("PP_ISAIOB: "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_ISAIOB)); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>("MAC addr: "); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+0)); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+2)); <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(cs8900ReadReg(PP_IA+4)); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); name="l00326"></a><a class="code" href="group__nic.html#ga5">00326</a> void <a class="code" href="group__nic.html#ga5">nicRegDump</a>(void) cs8900IORegDump(); u08 cs8900LinkStatus(void) if(cs8900ReadReg(PP_LineST) & LINK_OK) return 1; else return 0; pre></div><hr size="1"><address style="align: right;">Generated on Sun Oct 29 03:41:07 2006 for Procyon AVRlib by  href="http://www.doxygen.org/index.html"> src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </address>

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