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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 00024 00025 00026 00027 00028 00029 00030 00031 <a 00033 { 00034 rtl8019Init(); 00035 } 00036 <a 00038 { 00039 00040 00041 00042 } 00043 <a 00045 { 00046 00047 00048 00049 00050 00051 00052 00053 00054 00055 00056 { 00057 00058 00059 } 00060 00061 00062 00063 00064 00065 00066 } 00067 00068 00069 { 00070 u08 tempCR; 00071 00072 00073 00074 00075 00076 00077 00078 00079 00080 00081 00082 00083 } 00084 00085 00086 { 00087 u08 tempCR; 00088 00089 00090 00091 00092 00093 00094 00095 00096 00097 00098 00099 00100 } 00101 <a 00103 { 00104 00105 } 00106 00107 00108 00109 { 00110 00111 00112 sbi(MCUCR, SRE); 00113 00114 00115 00116 00117 00118 00119 00120 00121 00122 00123 00124 00125 00126 00127 00128 00129 00130 00131 00132 } 00133 00134 00135 00136 00137 { 00138 00139 } 00140 00141 00142 { 00143 00144 00145 00146 00147 00148 00149 00150 nop(); 00151 nop(); 00152 00153 00154 00155 00156 } 00157 00158 00159 00160 00161 00162 { 00163 00164 } 00165 00166 00167 { 00168 00169 00170 00171 00172 00173 00174 nop(); 00175 nop(); 00176 00177 00178 00179 00180 00181 00182 } 00183 00184 00185 00186 00187 { 00188 00189 00190 00191 00192 00193 delay_ms(10); 00194 00195 00196 00197 00198 delay_ms(50); 00199 00200 00201 00202 00203 00204 00205 00206 00207 00208 00209 00210 00211 delay_ms(255); 00212 00213 00214 00215 00216 00217 00218 00219 00220 00221 00222 00223 00224 00225 00226 00227 00228 00229 delay_ms(2); 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 00262 00263 00264 00265 00266 00267 00268 00269 00270 00271 00272 00273 00274 00275 00276 00277 00278 00279 00280 00281 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 00326 00327 00328 00329 00330 00331 00332 00333 00334 00335 { 00336 00337 00338 00339 00340 00341 00342 } 00343 00344 00345 00346 00347 00348 00349 00350 00351 00352 00353 00354 00355 00356 00357 00358 00359 00360 00361 00362 00363 00364 00365 00366 00367 00368 00369 00370 00371 } 00372 00373 00374 00375 { 00376 00377 00378 00379 00380 00381 00382 00383 00384 00385 00386 00387 00388 00389 00390 00391 00392 00393 00394 00395 00396 00397 00398 } 00399 00400 00401 00402 { 00403 00404 00405 00406 00407 00408 00409 00410 00411 00412 00413 00414 00415 } 00416 00417 00418 00419 { 00420 00421 00422 00423 00424 } 00425 00426 00427 { 00428 00429 00430 00431 00432 delay_ms(2); 00433 00434 00435 00436 resend = 0; 00437 00438 { 00439 00440 00441 00442 00443 00444 } 00445 00446 00447 00448 00449 00450 00451 00452 00453 00454 00455 00456 00457 00458 00459 } 00460 00461 00462 00463 { 00464 00465 00466 00467 00468 00469 00470 00471 00472 00473 00474 00475 00476 00477 00478 00479 00480 00481 00482 00483 00484 00485 00486 00487 00488 00489 00490 00491 00492 00493 00494 00495 00496 00497 00498 00499 00500 00501 00502 00503 00504 00505 00506 00507 00508 00509 00510 00511 00512 00513 00514 00515 00516 00517 00518 00519 00520 00521 delay_ms(25); 00522 } 00523 </ <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/rtl8019.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>rtl8019.c</h1><a href="rtl8019_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 /*! \file rtl8019.c \brief Realtek RTL8019AS Ethernet Interface Driver. */ //***************************************************************************** // // File Name : 'rtl8019.c' // Title : Realtek RTL8019AS Ethernet Interface Driver // Author : Pascal Stang // Created : 7/6/2004 // Revised : 10/1/2005 // Version : 0.1 // Target MCU : Atmel AVR series // Editor Tabs : 4 // // Based in part on code by Louis Beaudoin (www.embedded-creations.com). // Thanks to Adam Dunkels and Louis Beaudoin for providing the initial // structure in which to write this driver. //***************************************************************************** #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="rtl8019_8h.html">rtl8019.h</a>" // include configuration #include "<a class="code" href="rtl8019conf_8h.html">rtl8019conf.h</a>" // pointers to locations in the RTL8019 receive buffer static unsigned char NextPage; // page pointer to next Rx packet static unsigned int CurrentRetreiveAddress; // DMA address for read Rx packet location name="l00032"></a><a class="code" href="group__nic.html#ga0">00032</a> void <a class="code" href="group__nic.html#ga0">nicInit</a>(void) name="l00037"></a><a class="code" href="group__nic.html#ga1">00037</a> void <a class="code" href="group__nic.html#ga1">nicSend</a>(unsigned int len, unsigned char* packet) rtl8019BeginPacketSend(len); rtl8019SendPacketData(packet, len); rtl8019EndPacketSend(); name="l00044"></a><a class="code" href="group__nic.html#ga2">00044</a> unsigned int <a class="code" href="group__nic.html#ga2">nicPoll</a>(unsigned int maxlen, unsigned char* packet) unsigned int packetLength; packetLength = rtl8019BeginPacketRetreive(); // 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 ) rtl8019EndPacketRetreive(); return 0; // copy the packet data into the packet buffer rtl8019RetreivePacketData( packet, packetLength ); rtl8019EndPacketRetreive(); return packetLength; void nicGetMacAddress(u08* macaddr) // switch register pages tempCR = rtl8019Read(CR); rtl8019Write(CR,tempCR|PS0); // read MAC address registers *macaddr++ = rtl8019Read(PAR0); *macaddr++ = rtl8019Read(PAR1); *macaddr++ = rtl8019Read(PAR2); *macaddr++ = rtl8019Read(PAR3); *macaddr++ = rtl8019Read(PAR4); *macaddr++ = rtl8019Read(PAR5); // switch register pages back rtl8019Write(CR,tempCR); void nicSetMacAddress(u08* macaddr) // switch register pages tempCR = rtl8019Read(CR); rtl8019Write(CR,tempCR|PS0); // write MAC address registers rtl8019Write(PAR0, *macaddr++); rtl8019Write(PAR1, *macaddr++); rtl8019Write(PAR2, *macaddr++); rtl8019Write(PAR3, *macaddr++); rtl8019Write(PAR4, *macaddr++); rtl8019Write(PAR5, *macaddr++); // switch register pages back rtl8019Write(CR,tempCR); name="l00102"></a><a class="code" href="group__nic.html#ga5">00102</a> void <a class="code" href="group__nic.html#ga5">nicRegDump</a>(void) rtl8019RegDump(); void rtl8019SetupPorts(void) #if NIC_CONNECTION == MEMORY_MAPPED // enable external SRAM interface - no wait states // sbi(MCUCR, SRW10); // sbi(XMCRA, SRW00); // sbi(XMCRA, SRW01); // sbi(XMCRA, SRW11); #else // make the address port output RTL8019_ADDRESS_DDR |= RTL8019_ADDRESS_MASK; // make the data port input with pull-ups RTL8019_DATA_PORT = 0xFF; // initialize the control port read and write pins to de-asserted RTL8019_CONTROL_DDR |= (1<<RTL8019_CONTROL_READPIN); RTL8019_CONTROL_DDR |= (1<<RTL8019_CONTROL_WRITEPIN); // set the read and write pins to output RTL8019_CONTROL_PORT |= (1<<RTL8019_CONTROL_READPIN); RTL8019_CONTROL_PORT |= (1<<RTL8019_CONTROL_WRITEPIN); #endif // set reset pin to output sbi(RTL8019_RESET_DDR, RTL8019_RESET_PIN); #if NIC_CONNECTION == MEMORY_MAPPED inline void rtl8019Write(u08 address, u08 data) *(volatile u08*)(RTL8019_MEMORY_MAPPED_OFFSET + address) = data; #else void rtl8019Write(unsigned char address, unsigned char data) // assert the address RTL8019_ADDRESS_PORT = address | (RTL8019_ADDRESS_PORT&~RTL8019_ADDRESS_MASK); // set data bus as output and place data on bus RTL8019_DATA_DDR = 0xFF; RTL8019_DATA_PORT = data; // clock write pin cbi(RTL8019_CONTROL_PORT, RTL8019_CONTROL_WRITEPIN); sbi(RTL8019_CONTROL_PORT, RTL8019_CONTROL_WRITEPIN); // set data port back to input with pullups enabled RTL8019_DATA_DDR = 0x00; RTL8019_DATA_PORT = 0xFF; #endif #if NIC_CONNECTION == MEMORY_MAPPED inline u08 ax88796Read(u08 address) return *(volatile u08*)(RTL8019_MEMORY_MAPPED_OFFSET + address); #else unsigned char rtl8019Read(unsigned char address) unsigned char data; // assert the address RTL8019_ADDRESS_PORT = address | (RTL8019_ADDRESS_PORT&~RTL8019_ADDRESS_MASK); // assert read cbi(RTL8019_CONTROL_PORT, RTL8019_CONTROL_READPIN); // read in the data data = RTL8019_DATA_PIN; // negate read sbi(RTL8019_CONTROL_PORT, RTL8019_CONTROL_READPIN); // return data return data; #endif void rtl8019Init(void) // setup I/O ports rtl8019SetupPorts(); // do a hard reset sbi(RTL8019_RESET_PORT, RTL8019_RESET_PIN); cbi(RTL8019_RESET_PORT, RTL8019_RESET_PIN); // clear interrupt state rtl8019Write( ISR, rtl8019Read(ISR) ); // switch to page 3 to load config registers rtl8019Write(CR, (PS0|PS1|RD2|STOP)); // disable EEPROM write protect of config registers rtl8019Write(RTL_EECR, (EEM1|EEM0)); // set network type to 10 Base-T link test rtl8019Write(CONFIG2, 0x20); // disable powerdown and sleep rtl8019Write(CONFIG3, 0); // reenable EEPROM write protect rtl8019Write(RTL_EECR, 0); // go back to page 0, stop NIC, abort DMA rtl8019Write(CR, (RD2|STOP)); delay_ms(2); // wait for traffic to complete rtl8019Write(DCR, DCR_INIT); rtl8019Write(RBCR0,0x00); rtl8019Write(RBCR1,0x00); rtl8019Write(RCR, AB); rtl8019Write(TPSR, TXSTART_INIT); rtl8019Write(TCR, LB0); rtl8019Write(PSTART, RXSTART_INIT); rtl8019Write(BNRY, RXSTART_INIT); rtl8019Write(PSTOP, RXSTOP_INIT); rtl8019Write(CR, (PS0|RD2|STOP)); // switch to page 1 rtl8019Write(CPR, RXSTART_INIT); // set MAC address rtl8019Write(PAR0, RTL8019_MAC0); rtl8019Write(PAR1, RTL8019_MAC1); rtl8019Write(PAR2, RTL8019_MAC2); rtl8019Write(PAR3, RTL8019_MAC3); rtl8019Write(PAR4, RTL8019_MAC4); rtl8019Write(PAR5, RTL8019_MAC5); // initialize sequence per NE2000 spec rtl8019Write(CR, (RD2|STOP)); rtl8019Write(DCR, DCR_INIT); rtl8019Write(CR, (RD2|START)); rtl8019Write(ISR,0xFF); // clear all interrupts rtl8019Write(IMR, IMR_INIT); rtl8019Write(TCR, TCR_INIT); rtl8019Write(CR, (RD2|START)); // start the NIC void rtl8019BeginPacketSend(unsigned int packetLength) unsigned int sendPacketLength; sendPacketLength = (packetLength>=ETHERNET_MIN_PACKET_LENGTH)? (packetLength):ETHERNET_MIN_PACKET_LENGTH; //start the NIC rtl8019Write(CR, (RD2|START)); // still transmitting a packet - wait for it to finish while( rtl8019Read(CR) & TXP ); // load beginning page for transmit buffer rtl8019Write(TPSR,TXSTART_INIT); // set start address for remote DMA operation rtl8019Write(RSAR0,0x00); rtl8019Write(RSAR1,0x40); // clear the packet stored interrupt rtl8019Write(ISR,PTX); // load data byte count for remote DMA rtl8019Write(RBCR0, (unsigned char)(packetLength)); rtl8019Write(RBCR1, (unsigned char)(packetLength>>8)); rtl8019Write(TBCR0, (unsigned char)(sendPacketLength)); rtl8019Write(TBCR1, (unsigned char)((sendPacketLength)>>8)); // do remote write operation rtl8019Write(CR,(RD1|START)); void rtl8019SendPacketData(unsigned char *localBuffer, unsigned int length) unsigned int i; // write data to DMA port for(i=0;i<length;i++) rtl8019Write(RDMAPORT, localBuffer[i]); void rtl8019EndPacketSend(void) //send the contents of the transmit buffer onto the network rtl8019Write(CR,(RD2|TXP)); // clear the remote DMA interrupt rtl8019Write(ISR, RDC); unsigned int rtl8019BeginPacketRetreive(void) unsigned char i; unsigned char bnry; unsigned char pageheader[4]; unsigned int rxlen; // check for and handle an overflow rtl8019ProcessInterrupt(); // read CPR from page 1 rtl8019Write(CR,(PS0|RD2|START)); i = rtl8019Read(CPR); // return to page 0 rtl8019Write(CR,(RD2|START)); // read the boundary register - pointing to the beginning of the packet bnry = rtl8019Read(BNRY) ; // return if there is no packet in the buffer if( bnry == i ) return 0; // clear the packet received interrupt flag rtl8019Write(ISR, PRX); // if boundary pointer is invalid if( (bnry >= RXSTOP_INIT) || (bnry < RXSTART_INIT) ) // reset the contents of the buffer and exit rtl8019Write(BNRY, RXSTART_INIT); rtl8019Write(CR, (PS0|RD2|START)); rtl8019Write(CPR, RXSTART_INIT); rtl8019Write(CR, (RD2|START)); return 0; // initiate DMA to transfer the RTL8019 packet header rtl8019Write(RBCR0, 4); rtl8019Write(RBCR1, 0); rtl8019Write(RSAR0, 0); rtl8019Write(RSAR1, bnry); rtl8019Write(CR, (RD0|START)); // transfer packet header for(i=0;i<4;i++) pageheader[i] = rtl8019Read(RDMAPORT); // end the DMA operation rtl8019Write(CR, (RD2|START)); // wait for remote DMA complete for(i = 0; i < 20; i++) if(rtl8019Read(ISR) & RDC) break; rtl8019Write(ISR, RDC); rxlen = (pageheader[PKTHEADER_PKTLENH]<<8) + pageheader[PKTHEADER_PKTLENL]; NextPage = pageheader[PKTHEADER_NEXTPAGE]; CurrentRetreiveAddress = (bnry<<8) + 4; // if the NextPage pointer is invalid, the packet is not ready yet - exit if( (NextPage >= RXSTOP_INIT) || (NextPage < RXSTART_INIT) ) return 0; return rxlen-4; void rtl8019RetreivePacketData(unsigned char * localBuffer, unsigned int length) unsigned int i; // initiate DMA to transfer the data rtl8019Write(RBCR0, (unsigned char)length); rtl8019Write(RBCR1, (unsigned char)(length>>8)); rtl8019Write(RSAR0, (unsigned char)CurrentRetreiveAddress); rtl8019Write(RSAR1, (unsigned char)(CurrentRetreiveAddress>>8)); rtl8019Write(CR, (RD0|START)); // transfer packet data for(i=0;i<length;i++) localBuffer[i] = rtl8019Read(RDMAPORT); // end the DMA operation rtl8019Write(CR, (RD2|START)); // wait for remote DMA complete for(i=0; i<20; i++) if(rtl8019Read(ISR) & RDC) break; rtl8019Write(ISR, RDC); // keep track of current address CurrentRetreiveAddress += length; if( CurrentRetreiveAddress >= 0x6000 ) CurrentRetreiveAddress = CurrentRetreiveAddress - (0x6000-0x4600) ; void rtl8019EndPacketRetreive(void) unsigned char i; // end the DMA operation rtl8019Write(CR, (RD2|START)); // wait for remote DMA complete for(i=0; i<20; i++) if(rtl8019Read(ISR) & RDC) break; rtl8019Write(ISR, RDC); // set the boundary register to point to the start of the next packet rtl8019Write(BNRY, NextPage); void rtl8019ProcessInterrupt(void) unsigned char byte = rtl8019Read(ISR); if( byte & OVW ) rtl8019ReceiveOverflowRecover(); void rtl8019ReceiveOverflowRecover(void) unsigned char data_L, resend; data_L = rtl8019Read(CR); rtl8019Write(CR, 0x21); rtl8019Write(RBCR0, 0x00); rtl8019Write(RBCR1, 0x00); if(!(data_L & 0x04)) else if(data_L & 0x04) data_L = rtl8019Read(ISR); if((data_L & 0x02) || (data_L & 0x08)) resend = 0; else resend = 1; rtl8019Write(TCR, 0x02); rtl8019Write(CR, 0x22); rtl8019Write(BNRY, RXSTART_INIT); rtl8019Write(CR, 0x62); rtl8019Write(CPR, RXSTART_INIT); rtl8019Write(CR, 0x22); rtl8019Write(ISR, 0x10); rtl8019Write(TCR, TCR_INIT); if(resend) rtl8019Write(CR, 0x26); rtl8019Write(ISR, 0xFF); void rtl8019RegDump(void) // unsigned char result; // result = rtl8019Read(TR); // rprintf("Media State: "); // if(!(result & AUTOD)) // rprintf("Autonegotiation\r\n"); // else if(result & RST_B) // rprintf("PHY in Reset \r\n"); // else if(!(result & RST_10B)) // rprintf("10BASE-T \r\n"); // else if(!(result & RST_TXB)) // rprintf("100BASE-T \r\n"); //rprintf("TR regsiter : %x\r\n",result); //result = read_mii(0x10,0); //rprintf("MII regsiter 0x10: %x\r\n",result); rprintf("Page0: CR BNRY PSR PST ISR TSR RSR MMR TR GPI\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(CR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(BNRY)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(PSTART)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(PSTOP)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(ISR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(TSR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(RSR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // rprintfu08(rtl8019Read(MEMR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // rprintfu08(rtl8019Read(TR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); // rprintfu08(rtl8019Read(GPI)); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>(); rtl8019Write(CR,rtl8019Read(CR)|PS0); rprintf("Page1: CR PAR CPR\r\n"); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(CR)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR0)); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR1)); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR2)); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR3)); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR4)); <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(rtl8019Read(PAR5)); <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(" "); <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(rtl8019Read(CPR)); rtl8019Write(CR,rtl8019Read(CR)&~PS0); 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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