📄 cp220x_core.lst
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221 1 // Auto-Negotiation Synchronization (Section 15.2 of CP220x Datasheet)
222 1 //--------------------------------------------------------------------------
223 1 //自动协商同步
224 1 // Step 1: Disable the PHY
225 1 PHYCN = 0x00; //禁止phy
226 1
227 1 // Step 2: Enable the PHY with link integrity test and auto-negotiation
228 1 // turned off
229 1
230 1 // A. Disable the Transmitter Power Save Option and Configure Options
231 1 TXPWR = 0x80;//禁止传输电源
232 1 PHYCF = ( SMSQ | JABBER | ADPAUSE | AUTOPOL );//配置phy工作方式
233 1
234 1 // B. Enable the Physical Layer
235 1 PHYCN = PHYEN;//允许phy
236 1
237 1 // C. Wait for the physical layer to power up
238 1 wait_ms(10);//等待phy层上电完成
239 1
240 1 // D. Enable the Transmitter and Receiver
241 1 PHYCN = ( PHYEN | TXEN | RXEN );//允许物理层开始工作
C51 COMPILER V7.09 CP220X_CORE 07/27/2007 15:11:23 PAGE 5
242 1
243 1 // Step 3: Poll the Wake-on-Lan Interrupt
244 1
245 1 // A. Clear Interrupt Flags
246 1 temp_char = INT1;//清除中断标志
247 1
248 1 // B. Start a new timeout for 1.5 seconds
249 1 reset_timeout(ONE_SECOND+ONE_SECOND/2);
250 1
251 1 // C. Check for a signal
252 1 while(1)
253 1 {
254 2 // If a signal is detected, wait 250 ms, then continue
255 2 if(INT1RD & WAKEINT){//如果检测到信息，再延时250ms
256 3 wait_ms(250);
257 3 break;
258 3 }
259 2
260 2 // If no signal is deteced, wait 1.5s, then continue
261 2 if(timeout_expired()){//1.5秒超时，也继续
262 3 break;
263 3 }
264 2
265 2 }
266 1
267 1
268 1 AB4_LED1 = !AB4_LED1;
269 1 //--------------------------------------------------------------------------
270 1 // Physical Layer Initialization (Section 15.7 of CP220x Datasheet)
271 1 //--------------------------------------------------------------------------
272 1 //物理层初始化
273 1 // Step 1: Synchronization procedure implemented above
274 1
275 1 // Step 2: Disable the physical layer
276 1 PHYCN = 0x00;
277 1
278 1 // Step 3: Configure the desired physical layer options including
279 1 // auto-negotiation and link integrity
280 1 PHYCF = ( SMSQ | LINKINTG | JABBER | AUTONEG | ADPAUSE | AUTOPOL );
281 1
282 1 // Step 4: Enable the physcial layer
283 1
284 1 // A. Enable the Physical Layer
285 1 PHYCN = PHYEN;
286 1
287 1 // B. Wait for the physical layer to power up
288 1 wait_ms(10);
289 1 // for(temp_char=0; temp_char<250;temp_char++)
290 1 // ;
291 1
292 1 // C. Enable the Transmitter and Receiver
293 1 // Auto-negotiation begins now
294 1 PHYCN = ( PHYEN | TXEN | RXEN );
295 1
296 1
297 1 // Step 5: Wait for auto-negotiation to complete
298 1 // for(temp_char=0; temp_char<250;temp_char++)
299 1 // ;
300 1 // Clear INT1 Interrupt Flags
301 1 temp_char = INT1;
302 1
303 1 // Start a six second timeout
C51 COMPILER V7.09 CP220X_CORE 07/27/2007 15:11:23 PAGE 6
304 1 reset_timeout(6*ONE_SECOND);
305 1
306 1 // Check for autonegotiation fail or complete flag
307 1 while(1){//检查网络是否连接，返回连接状态
308 2 // If Auto-Negotiation Completes/Fails, break
309 2 if(INT1RD & (ANCINT | ANFINT)){
310 3 break;
311 3 }
312 2
313 2 // If Timeout Expires, break
314 2 if(timeout_expired()){
315 3 break;
316 3 }
317 2 }
318 1
319 1
320 1 // Mask out all bits except for auto negotiation bits
321 1 temp_char = INT1RD;
322 1 temp_char &= (ANCINT | ANFINT);
323 1
324 1 // Check if Auto-Negotiation has FAILED
325 1 if(temp_char & ANFINT){
326 2
327 2 // Auto-Negotiation has failed
328 2 retval = LINK_ERROR;
329 2
330 2 #if(UART_ENABLED)
printf("Auto-Negotiation Failed -- Check Network Cable");
#endif
333 2
334 2 } else
335 1
336 1 // Check if Auto-Negotiation has PASSED
337 1 if(temp_char == ANCINT){
338 2
339 2 // Auto-Negotiation has passed
340 2 retval = 0;
341 2
342 2 // Enable Link LED and Activity LED
343 2 IOPWR = 0x0C;
344 2 AB4_LED1 = 0;
345 2 AB4_LED2 = 1;
346 2
347 2 #if(UART_ENABLED)
printf("Auto-Negotiation Passed\n");
#endif
350 2
351 2 } else
352 1
353 1 // Timeout Occured.
354 1 {
355 2 // Timeout
356 2 retval = LINK_ERROR;
357 2 // IOPWR = 0x0C;
358 2 #if(UART_ENABLED)
printf("*** TIMEOUT \n");
#endif
361 2 }
362 1
363 1 return retval;
364 1
365 1 }
C51 COMPILER V7.09 CP220X_CORE 07/27/2007 15:11:23 PAGE 7
366
367
368 //-----------------------------------------------------------------------------
369 // MAC_Init
370 //-----------------------------------------------------------------------------
371 //
372 // Return Value : None
373 // Parameters : None
374 //
375 // Initializes the MAC and programs the MAC address using the MAC address
376 // stored at address 0x1FFA in CP220x Flash.
377 //-----------------------------------------------------------------------------
378 void MAC_Init(void)
379 {
380 1
381 1 // Check the duplex mode and perform duplex-mode specific initializations
382 1 if(PHYCN & 0x10){
383 2
384 2 // The device is in full-duplex mode, configure MAC registers
385 2 // Padding is turned on.
386 2 MAC_Write(MACCF, 0x40B3);//配置全双工模式
387 2 MAC_Write(IPGT, 0x0015);
388 2
389 2 } else {
390 2
391 2 // The device is in half-duplex mode, configure MAC registers
392 2 // Padding is turned off.
393 2 MAC_Write(MACCF, 0x4012);//配置半双工模式
394 2 MAC_Write(IPGT, 0x0012);
395 2
396 2 }
397 1
398 1 // Configure the IPGR register
399 1 MAC_Write(IPGR, 0x0C12);
400 1
401 1 // Configure the MAXLEN register to 1518 bytes
402 1 MAC_Write(MAXLEN, 0x05EE);//配置读写最大数
403 1
404 1 // Copy MAC Address Stored in Flash to MYMAC
405 1 FLASHADDRH = 0x1F;//读出flash 中的 mac
406 1 FLASHADDRL = 0xFA;
407 1
408 1 MYMAC.Char[0] = FLASHAUTORD;
409 1 MYMAC.Char[1] = FLASHAUTORD;
410 1 MYMAC.Char[2] = FLASHAUTORD;
411 1 MYMAC.Char[3] = FLASHAUTORD;
412 1 MYMAC.Char[4] = FLASHAUTORD;
413 1 MYMAC.Char[5] = FLASHAUTORD;
414 1
415 1 my_hwaddr[0] = MYMAC.Char[0];
416 1 my_hwaddr[1] = MYMAC.Char[1];
417 1 my_hwaddr[2] = MYMAC.Char[2];
418 1 my_hwaddr[3] = MYMAC.Char[3];
419 1 my_hwaddr[4] = MYMAC.Char[4];
420 1 my_hwaddr[5] = MYMAC.Char[5];
421 1
422 1 // Program the MAC address
423 1 MAC_SetAddress(&MYMAC);
424 1
425 1 // Enable Reception and configure Loopback mode
426 1 MAC_Write(MACCN, 0x0001); // Enable Reception without loopback//开始接收
427 1
C51 COMPILER V7.09 CP220X_CORE 07/27/2007 15:11:23 PAGE 8
428 1 }
429
430 //-----------------------------------------------------------------------------
431 // Indirect MAC Register Access
432 //-----------------------------------------------------------------------------
433
434 //-----------------------------------------------------------------------------
435 // MAC_Write
436 //-----------------------------------------------------------------------------
437 //
438 // Return Value : None
439 // Parameters :
440 // 1) unsigned char mac_reg_offset - indirect register address
441 // 2) unsigned int mac_reg_data - the data to write to mac_reg_offset.
442 //
443 // Writes the value <mac_reg_data> to the indirect MAC register located at
444 // <mac_reg_offset>.
445 //-----------------------------------------------------------------------------
446 void MAC_Write(unsigned char mac_reg_offset, unsigned int mac_reg_data)
447 {
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