LWIP+enc28j60发送问题

发布于 2011-02-25 11:01:01 浏览：5514 订阅该版

5 个回答

wunihaoo 2011-02-26

这家伙很懒，什么也没写！

现在把程序修改了下，接收线程是用select判断是否有接收的数据。
打开LWIP的TCP_OUTPUT_DEBUG调试发现每次卡死的时候，是这种情况，是说发送队列太长了：
tcp_write(pcb=200071fc, data=20008aac, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=20008aac, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1061250:1062274 (0x0) 
tcp_enqueue: queueing 1062274:1063298 (0x0) 
tcp_output_segment: 1061250:1062274 
tcp_output_segment: 1062274:1063298 
tcp_write(pcb=200071fc, data=200092ac, len=44, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=200092ac, len=44, flags=0, apiflags=0) 
tcp_enqueue: queueing 1063298:1063342 (0x0) 
tcp_output_segment: 1063298:1063342 
tcp_output: nothing to send (00000000) 
tcp_output: sending ACK for 426865333 
tcp_write(pcb=200071fc, data=200092e4, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=200092e4, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1063342:1064366 (0x0) 
tcp_enqueue: queueing 1064366:1065390 (0x0) 
tcp_output_segment: 1063342:1064366 
tcp_output_segment: 1064366:1065390 
tcp_write(pcb=200071fc, data=20009ae4, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=20009ae4, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1065390:1066414 (0x0) 
tcp_enqueue: queueing 1066414:1067438 (0x0) 
tcp_output_segment: 1065390:1066414 
tcp_output_segment: 1066414:1067438 
tcp_write(pcb=200071fc, data=2000a2e4, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000a2e4, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1067438:1068462 (0x0) 
tcp_enqueue: queueing 1068462:1069486 (0x0) 
tcp_output_segment: 1067438:1068462 
tcp_output_segment: 1068462:1069486 
tcp_write(pcb=200071fc, data=2000aae4, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000aae4, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1069486:1070510 (0x0) 
tcp_enqueue: queueing 1070510:1071534 (0x0) 
tcp_output_segment: 1069486:1070510 
tcp_output_segment: 1070510:1071534 
tcp_write(pcb=200071fc, data=2000b2e4, len=44, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b2e4, len=44, flags=0, apiflags=0) 
tcp_enqueue: queueing 1071534:1071578 (0x0) 
tcp_output_segment: 1071534:1071578 
tcp_output: nothing to send (00000000) 
tcp_write(pcb=200071fc, data=2000b31c, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b31c, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1071578:1072602 (0x0) 
tcp_enqueue: queueing 1072602:1073626 (0x0) 
tcp_output_segment: 1071578:1072602 
tcp_output_segment: 1072602:1073626 
tcp_write(pcb=200071fc, data=2000bb1c, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000bb1c, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1073626:1074650 (0x0) 
tcp_enqueue: queueing 1074650:1075674 (0x0) 
tcp_output_segment: 1073626:1074650 
tcp_output_segment: 1074650:1075674 
tcp_write(pcb=200071fc, data=2000c31c, len=1024, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000c31c, len=1024, flags=0, apiflags=0) 
tcp_enqueue: queueing 1075674:1076698 (0x0) 
tcp_output_segment: 1075674:1076698 
tcp_output: nothing to send (00000000) 
tcp_output_segment: 1074650:1075674 
tcp_write(pcb=200071fc, data=2000c71c, len=0, apiflags=0) 
tcp_write(pcb=200071fc, data=2000c71c, len=2048, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000c71c, len=2048, flags=0, apiflags=0) 
tcp_enqueue: queueing 1076698:1077722 (0x0) 
tcp_enqueue: queueing 1077722:1078746 (0x0) 
tcp_output_segment: 1076698:1077722 
tcp_output_segment: 1077722:1078746 
tcp_write(pcb=200071fc, data=2000cf1c, len=1068, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000cf1c, len=1068, flags=0, apiflags=0) 
tcp_enqueue: queueing 1078746:1079770 (0x0) 
tcp_enqueue: queueing 1079770:1079814 (0x0) 
tcp_output_segment: 1078746:1079770 
tcp_output_segment: 1079770:1079814 
TCP thread miss segnumb: 130  31. Time: 201210 
tcp_write(pcb=200071fc, data=2000b31c, len=980, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b31c, len=980, flags=0, apiflags=0) 
tcp_enqueue: too long queue 4 (max 4) 
tcp_output: nothing to send (00000000) 
tcp_write(pcb=200071fc, data=2000b31c, len=2004, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b31c, len=2004, flags=0, apiflags=0) 
tcp_enqueue: queueing 1079814:1080838 (0x0) 
tcp_enqueue: queue too long 6 (4) 
tcp_output: nothing to send (00000000) 
tcp_output_segment: 1079770:1079814 
tcp_write(pcb=200071fc, data=2000b31c, len=2004, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b31c, len=2004, flags=0, apiflags=0) 
tcp_enqueue: queueing 1079814:1080838 (0x0) 
tcp_enqueue: queue too long 6 (4) 
tcp_output: nothing to send (00000000) 
tcp_output: nothing to send (00000000) 
tcp_write(pcb=200071fc, data=2000b31c, len=2004, apiflags=0) 
tcp_enqueue(pcb=200071fc, arg=2000b31c, len=2004, flags=0, apiflags=0) 
tcp_enqueue: queueing 1079814:1080838 (0x0) 
tcp_enqueue: queue too long 6 (4)