Hi, when you say it is not working, what exactly is happening? How do you test it...does anything get transmitted...how about received... Error 997 per se is not suspicious, as you can see from the code, WinAPI.java:835, this is expected to happen at times an the code is prepared to handle it (or at least that is the intent). What we need is a repeatable test case and see where or who gets stuck. br Kusti From: ant elder <ant.elder@xxxxxxxxx<mailto:ant.elder@xxxxxxxxx>> Reply-To: "purejavacomm@xxxxxxxxxxxxx<mailto:purejavacomm@xxxxxxxxxxxxx>" <purejavacomm@xxxxxxxxxxxxx<mailto:purejavacomm@xxxxxxxxxxxxx>> Date: Fri, 23 May 2014 12:57:16 +0300 To: "purejavacomm@xxxxxxxxxxxxx<mailto:purejavacomm@xxxxxxxxxxxxx>" <purejavacomm@xxxxxxxxxxxxx<mailto:purejavacomm@xxxxxxxxxxxxx>> Subject: [purejavacomm] PureJavaComm no response received after error 997 I've been using PureJavaComm 0.0.21 for a while now and its working really well talking to lots of different types of Arduino and compatible mcu's, so thank you for it. I've just got a new device today (http://www.dfrobot.com/wiki/index.php/Bluno_SKU:DFR0267) and this one does not work. It is working ok talking to other Windows Terminal programs and with the Arduino serial monitor which use RXTX, so the board itself seems to be working ok. I've a debug log from PureJavaComm which i've attached here. I don't completely understand all the debug output but i do see there is an error 997 which sounds suspicious. Does this indicate anything to you? Thanks for any help. ...ant log: 705295,class jtermios.windows.JTermiosImpl line 264, thread id 1, main, instantiating jtermios.windows.JTermiosImpl log: 705829,class jtermios.windows.WinAPI line 763, thread id 1, main, > QueryDosDeviceW(null,[C@a894af68,16384) log: 705833,class jtermios.windows.WinAPI line 765, thread id 1, main, < QueryDosDeviceW(null,[C@a894af68,16384) => 14155 log: 705843,class jtermios.JTermios line 390, thread id 1, main, > open('COM15',00020006) log: 705856,class jtermios.windows.WinAPI line 533, thread id 1, main, > CreateFileW(\\.\COM15, 0xC0000000, 0x00000000, null, 0x00000003, 0x40000000,null) log: 705859,class jtermios.windows.WinAPI line 535, thread id 1, main, < CreateFileW(\\.\COM15, 0xC0000000, 0x00000000, null, 0x00000003, 0x40000000,null) => native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8) log: 705860,class jtermios.windows.WinAPI line 642, thread id 1, main, > SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), 2048, 2048) log: 705862,class jtermios.windows.WinAPI line 644, thread id 1, main, < SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), 2048, 2048) => true log: 705863,class jtermios.windows.WinAPI line 621, thread id 1, main, > GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 0 fFlags 0000 wReserved 0 XonLim 0 XoffLim 0 ByteSize 0 Parity 0 StopBits 0 XonChar 00 XoffChar 00 ErrorChar 00 EofChar 00 EvtChar 00 wReserved1 0]) log: 705869,class jtermios.windows.WinAPI line 623, thread id 1, main, < GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 1000000 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705872,class jtermios.windows.WinAPI line 628, thread id 1, main, > SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 00 XoffChar 00 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) log: 705878,class jtermios.windows.WinAPI line 630, thread id 1, main, < SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 00 XoffChar 00 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705879,class jtermios.windows.WinAPI line 635, thread id 1, main, > SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [ReadIntervalTimeout -1 ReadTotalTimeoutMultiplier 0 ReadTotalTimeoutConstant 0 WriteTotalTimeoutMultiplier 0 WriteTotalTimeoutConstant 0]) log: 705880,class jtermios.windows.WinAPI line 637, thread id 1, main, < SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [ReadIntervalTimeout -1 ReadTotalTimeoutMultiplier 0 ReadTotalTimeoutConstant 0 WriteTotalTimeoutMultiplier 0 WriteTotalTimeoutConstant 0]) => true log: 705881,class jtermios.windows.JTermiosImpl line 752, thread id 1, main, vmin 0 vtime 0 ReadIntervalTimeout -1 ReadTotalTimeoutConstant 0 ReadTotalTimeoutMultiplier 0 log: 705882,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, false, false, null) log: 705883,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, false, false, null) => native@0x5ac (jtermios.windows.WinAPI$HANDLE@5ac) log: 705884,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, true, false, null) log: 705884,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, true, false, null) => native@0x5b0 (jtermios.windows.WinAPI$HANDLE@5b0) log: 705885,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, true, false, null) log: 705885,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, true, false, null) => native@0x5b4 (jtermios.windows.WinAPI$HANDLE@5b4) log: 705886,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, true, false, null) log: 705887,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, true, false, null) => native@0x5b8 (jtermios.windows.WinAPI$HANDLE@5b8) log: 705888,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, true, false, null) log: 705889,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, true, false, null) => native@0x5bc (jtermios.windows.WinAPI$HANDLE@5bc) log: 705889,class jtermios.windows.WinAPI line 684, thread id 1, main, > CreateEventA(null, true, false, null) log: 705890,class jtermios.windows.WinAPI line 686, thread id 1, main, < CreateEventA(null, true, false, null) => native@0x5c0 (jtermios.windows.WinAPI$HANDLE@5c0) log: 705891,class jtermios.JTermios line 392, thread id 1, main, < open('COM15',00020006) => 0 log: 705892,class jtermios.JTermios line 307, thread id 1, main, > fcntl(0, 3, 0) log: 705893,class jtermios.JTermios line 309, thread id 1, main, < fcntl(0, 3, 0) => 131078 log: 705893,class jtermios.JTermios line 307, thread id 1, main, > fcntl(0, 4, 131074) log: 705894,class jtermios.JTermios line 309, thread id 1, main, < fcntl(0, 4, 131074) => 0 log: 705895,class jtermios.JTermios line 369, thread id 1, main, > tcgetattr(0,jtermios.Termios@a1323da0) log: 705895,class jtermios.JTermios line 371, thread id 1, main, < tcgetattr(0,jtermios.Termios@d0c82aa0) => 0 log: 705896,class jtermios.JTermios line 363, thread id 1, main, > cfmakeraw(0,jtermios.Termios@d0c82aa0) log: 705897,class jtermios.JTermios line 365, thread id 1, main, < cfmakeraw(0,jtermios.Termios@d0c82aa0) log: 705897,class jtermios.JTermios line 376, thread id 1, main, > tcsetattr(0,0,jtermios.Termios@975081c2) log: 705898,class jtermios.windows.WinAPI line 621, thread id 1, main, > GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 00 XoffChar 00 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) log: 705901,class jtermios.windows.WinAPI line 623, thread id 1, main, < GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 00 XoffChar 00 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705902,class jtermios.windows.WinAPI line 628, thread id 1, main, > SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) log: 705908,class jtermios.windows.WinAPI line 630, thread id 1, main, < SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705909,class jtermios.JTermios line 378, thread id 1, main, < tcsetattr(0,0,jtermios.Termios@975081c2) => 0 log: 705910,class jtermios.JTermios line 342, thread id 1, main, > setspeed(0,jtermios.Termios@975081c2,9600) log: 705911,class jtermios.JTermios line 344, thread id 1, main, < setspeed(0,jtermios.Termios@975081c2,9600) => 0 log: 705912,class jtermios.JTermios line 376, thread id 1, main, > tcsetattr(0,0,jtermios.Termios@975081c2) log: 705913,class jtermios.JTermios line 378, thread id 1, main, < tcsetattr(0,0,jtermios.Termios@975081c2) => 0 log: 705914,class jtermios.JTermios line 376, thread id 1, main, > tcsetattr(0,0,jtermios.Termios@975081c2) log: 705914,class jtermios.JTermios line 378, thread id 1, main, < tcsetattr(0,0,jtermios.Termios@975081c2) => 0 log: 705915,class jtermios.JTermios line 418, thread id 1, main, > ioctl(0,1074033770,[00000000]) log: 705916,class jtermios.windows.WinAPI line 663, thread id 1, main, > GetCommModemStatus(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000000) log: 705917,class jtermios.windows.WinAPI line 665, thread id 1, main, < GetCommModemStatus(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000000) => true log: 705918,class jtermios.JTermios line 420, thread id 1, main, < ioctl(0,1074033770,[00000000]) => 0 log: 705919,class jtermios.JTermios line 459, thread id 1, main, > pipe([2,0,0]) log: 705919,class jtermios.JTermios line 461, thread id 1, main, < pipe([2,0,0]) => -1 log: 705921,class jtermios.JTermios line 342, thread id 1, main, > setspeed(0,jtermios.Termios@975081c2,1000000) log: 705922,class jtermios.windows.WinAPI line 621, thread id 1, main, > GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) log: 705925,class jtermios.windows.WinAPI line 623, thread id 1, main, < GetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 9600 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705926,class jtermios.windows.WinAPI line 628, thread id 1, main, > SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 1000000 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) log: 705932,class jtermios.windows.WinAPI line 630, thread id 1, main, < SetCommState(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [BaudRate 1000000 fFlags 0001 wReserved 0 XonLim 0 XoffLim 0 ByteSize 8 Parity 0 StopBits 0 XonChar 11 XoffChar 13 ErrorChar 00 EofChar 00 EvtChar 0A wReserved1 0]) => true log: 705933,class jtermios.JTermios line 344, thread id 1, main, < setspeed(0,jtermios.Termios@760249c2,1000000) => 0 log: 705934,class jtermios.JTermios line 376, thread id 1, main, > tcsetattr(0,0,jtermios.Termios@760249c2) log: 705934,class jtermios.JTermios line 378, thread id 1, main, < tcsetattr(0,0,jtermios.Termios@760249c2) => 0 log: 705935,class jtermios.JTermios line 418, thread id 1, main, > ioctl(0,1074033770,[00000000]) log: 705936,class jtermios.windows.WinAPI line 663, thread id 1, main, > GetCommModemStatus(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000000) log: 705937,class jtermios.windows.WinAPI line 665, thread id 1, main, < GetCommModemStatus(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000000) => true log: 705937,class jtermios.JTermios line 420, thread id 1, main, < ioctl(0,1074033770,[00000000]) => 0 log: 705938,class jtermios.JTermios line 418, thread id 1, main, > ioctl(0,-2147191699,[00000002]) log: 705939,class jtermios.windows.WinAPI line 670, thread id 1, main, > EscapeCommFunction(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000005) log: 705940,class jtermios.windows.WinAPI line 672, thread id 1, main, < EscapeCommFunction(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000005) => true log: 705941,class jtermios.windows.WinAPI line 670, thread id 1, main, > EscapeCommFunction(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000004) log: 705941,class jtermios.windows.WinAPI line 672, thread id 1, main, < EscapeCommFunction(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8),0x00000004) => true log: 705942,class jtermios.JTermios line 420, thread id 1, main, < ioctl(0,-2147191699,[00000002]) => 0 cmd: 1,16 log: 705945,class jtermios.JTermios line 376, thread id 26, Thread-6, > tcsetattr(0,0,jtermios.Termios@6a4bbae1) log: 705946,class jtermios.windows.WinAPI line 635, thread id 26, Thread-6, > SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [ReadIntervalTimeout 0 ReadTotalTimeoutMultiplier 0 ReadTotalTimeoutConstant 0 WriteTotalTimeoutMultiplier 0 WriteTotalTimeoutConstant 0]) log: 705947,class jtermios.JTermios line 404, thread id 1, main, > write(0,[8192,0x31,0x2C,0x31,0x36,0x0A,0x00,0x00,0x00...],5) log: 705947,class jtermios.windows.WinAPI line 637, thread id 26, Thread-6, < SetCommTimeouts(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [ReadIntervalTimeout 0 ReadTotalTimeoutMultiplier 0 ReadTotalTimeoutConstant 0 WriteTotalTimeoutMultiplier 0 WriteTotalTimeoutConstant 0]) => true log: 705948,class jtermios.windows.WinAPI line 698, thread id 1, main, > ResetEvent(native@0x5bc (jtermios.windows.WinAPI$HANDLE@5bc)) log: 705949,class jtermios.windows.JTermiosImpl line 752, thread id 26, Thread-6, vmin 1 vtime 0 ReadIntervalTimeout 0 ReadTotalTimeoutConstant 0 ReadTotalTimeoutMultiplier 0 log: 705950,class jtermios.windows.WinAPI line 700, thread id 1, main, < ResetEvent(native@0x5bc (jtermios.windows.WinAPI$HANDLE@5bc)) => true log: 705950,class jtermios.JTermios line 378, thread id 26, Thread-6, < tcsetattr(0,0,jtermios.Termios@6a4bbae1) => 0 log: 705951,class jtermios.windows.WinAPI line 549, thread id 1, main, > WriteFile(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [5,0x31,0x2C,0x31,0x36,0x0A], 5, [0], auto-allocated@0x647a20 (32 bytes)) log: 705952,class jtermios.JTermios line 438, thread id 26, Thread-6, > select(1,[0],[],[],jtermios.TimeVal@8a7fa8b9) log: 705952,class jtermios.windows.WinAPI line 600, thread id 26, Thread-6, > ClearCommError(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [0], [fFlags 0000 cbInQue 0 cbInQue 0]) log: 705953,class jtermios.windows.WinAPI line 551, thread id 1, main, < WriteFile(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [5,0x31,0x2C,0x31,0x36,0x0A], 5, [0], auto-allocated@0x647a20 (32 bytes)) => false log: 705954,class jtermios.windows.WinAPI line 602, thread id 26, Thread-6, < ClearCommError(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [0], [fFlags 0000 cbInQue 0 cbInQue 0]) => true log: 705955,class jtermios.windows.WinAPI line 740, thread id 1, main, > GetLastError() log: 705956,class jtermios.windows.WinAPI line 698, thread id 26, Thread-6, > ResetEvent(native@0x5c0 (jtermios.windows.WinAPI$HANDLE@5c0)) log: 705956,class jtermios.windows.WinAPI line 742, thread id 1, main, < GetLastError() => 997 log: 705957,class jtermios.windows.WinAPI line 700, thread id 26, Thread-6, < ResetEvent(native@0x5c0 (jtermios.windows.WinAPI$HANDLE@5c0)) => true log: 705958,class jtermios.JTermios line 406, thread id 1, main, < write(0,[8192,0x31,0x2C,0x31,0x36,0x0A,0x00,0x00,0x00...],5) => 5 log: 705958,class jtermios.windows.WinAPI line 607, thread id 26, Thread-6, > SetCommMask(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), 0x00000001) log: 705959,class jtermios.JTermios line 356, thread id 1, main, > tcdrain(0) log: 705960,class jtermios.windows.WinAPI line 609, thread id 26, Thread-6, < SetCommMask(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), 0x00000001) => true log: 705960,class jtermios.windows.WinAPI line 572, thread id 1, main, > FlushFileBuffers(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8)) log: 705961,class jtermios.windows.WinAPI line 705, thread id 26, Thread-6, > WaitCommEvent(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [0], auto-allocated@0x647a50 (32 bytes)) log: 705961,class jtermios.windows.WinAPI line 574, thread id 1, main, < FlushFileBuffers(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8)) => true log: 705962,class jtermios.windows.WinAPI line 707, thread id 26, Thread-6, < WaitCommEvent(native@0x5a8 (jtermios.windows.WinAPI$HANDLE@5a8), [0], auto-allocated@0x647a50 (32 bytes)) => false log: 705963,class jtermios.JTermios line 358, thread id 1, main, < tcdrain(0) => 0 log: 705964,class jtermios.windows.WinAPI line 740, thread id 26, Thread-6, > GetLastError() log: 705964,class jtermios.windows.WinAPI line 742, thread id 26, Thread-6, < GetLastError() => 997 log: 705965,class jtermios.windows.WinAPI line 726, thread id 26, Thread-6, > WaitForMultipleObjects(2, [2,native@0x5c0 (jtermios.windows.WinAPI$HANDLE@5c0),native@0x5ac (jtermios.windows.WinAPI$HANDLE@5ac)], false, 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