Repetier firmware only sends wait acks. Never acknowledges any other commands.

printman55

So printer has been working fine accepting commands like m115 and g1 and such.

However, it stopped responding to such commands.

The serial cable is fine, I tried it with another printer and it worked. I tried all the dtr/rts settings and it isn't that as the settings worked before and hasn't caused an issue. The BAUDRATE is correct at 115200 and no issues there. The port on the raspberry connected to the MCU is fine. And, I installed Klipper firmware from Repetier-server and it worked, proving that the connection works fine as it can use the same port to write to the MCU. When Klipper was installed it could respond to commands so the actual serial port connection is fine. However, when I reinstall the Repetier-firmware I get the same issue, the thing starts, spits out data but ignores all commands send to it.

This is the Repetier-server logs for the repetier-firmware installation:

Mesg:12:56:43.885: Dtr: true Rts: true

Mesg:12:56:43.885: Connection started

Mesg:12:56:43.885: Printer reset requested - emergency:false

Mesg:12:56:43.885: Dtr: false Rts: false

Mesg:12:56:43.906: Dtr: true Rts: true

Recv:12:56:44.327: Connection verified by:start

Recv:12:56:44.328: Printer reset detected:start

Recv:12:56:44.329: start

Send:12:56:44.329: N0 M110 N0

Recv:12:56:44.331: Info:PowerUp

Recv:12:56:44.332: Detected EEPROM version:20

Recv:12:56:44.336: Info:Autoleveling enabled

Recv:12:56:44.344: Transformation matrix: 0.999993 0.000000 0.003764 0.000008 0.999998 -0.002148 -0.003764 0.002148 0.999991

Recv:12:56:44.348: zDistortionCorrection:1

Recv:12:56:44.348: Free RAM:84360

Recv:12:56:44.348: SD init fail

Recv:12:56:44.352: SelectExtruder:0

Recv:12:56:44.352: FlowMultiply:100

Recv:12:56:45.134: wait

Mesg:12:56:46.133: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:46.133: wait

Send:12:56:46.133: N1 M999 ; In case we did not reset recover from fatal state

Recv:12:56:47.137: wait

Mesg:12:56:48.136: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:48.136: wait

Send:12:56:48.136: N0 M110 N0

Recv:12:56:49.140: wait

Mesg:12:56:50.139: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:50.139: wait

Send:12:56:50.139: N1 M105 ; fetch first temperature

Recv:12:56:51.139: wait

Mesg:12:56:52.142: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:52.142: wait

Send:12:56:52.142: N2 M105

Recv:12:56:53.142: wait

Mesg:12:56:54.141: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:54.141: wait

Send:12:56:54.141: N3 M105

Recv:12:56:55.145: wait

Mesg:12:56:56.144: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:56.144: wait

Send:12:56:56.144: N4 M105

Recv:12:56:57.147: wait

Mesg:12:56:58.147: Warning: Seems like we missed a ok - continue sending.

Recv:12:56:58.147: wait

Send:12:56:58.147: N5 M105

Recv:12:56:59.146: wait

Mesg:12:57:00.150: Warning: Seems like we missed a ok - continue sending.

Recv:12:57:00.150: wait

Send:12:57:00.150: N6 M105

Recv:12:57:01.149: wait

Mesg:12:57:02.153: Warning: Seems like we missed a ok - continue sending.

Recv:12:57:02.153: wait

Send:12:57:02.153: N7 M105

Recv:12:57:03.152: wait

Mesg:12:57:04.152: Warning: Seems like we missed a ok - continue sending.

Recv:12:57:04.152: wait

Send:12:57:04.152: N8 M105

Recv:12:57:05.155: wait

Mesg:12:57:06.154: Warning: Seems like we missed a ok - continue sending.

Recv:12:57:06.155: wait

Send:12:57:06.155: N9 M105

It will just continue like that forever. I have reinstalled the firmware and restarted both the MCU and the raspberry several times and everything. No idea how to troubleshoot this.

Seems to me as if the repetier-firmware is in a refuse command mode similar to that mentioned here:

“However, for some errors and firmwares not in all cases a message is send, so it will look just like the printer is not responding any more when the printer goes into “wait for reset” mode.” “We detected that on linux systems the drivers for some serial chips might get into a problematic state where they only send data but won’t receive anything which then causes the timeouts you see.” https://www.repetier-server.com/knowledgebase/connection-problems-with-printer/ “You find this in the serial connection definition under the name “USB Reconnect on Timeout”. Enable it and try if this fixes the problem when detected” I tried this usb reconnect on timeout and did not help anything. It prints "start"(and the following info) and "wait". But never responds to any command. As if it does not receive them, but it does, since when I have Klipper installed it sends back ok, and I can install other firmware. They commands are just ignored.Is there a possibility that the "refuse command mode" get's saved in-between installs? perhaps in an EEPROM or something?I did try connecting directly to the MCU with my laptop as well using Arduino IDE serial monitor to send commands but it is the same case. I get "start" and the info and then just "wait" no matter what command I try. This used to work previously as well.

Repetier

Baudrate is ok, but as you see only receiving is working. Firmware i snot seeing any command you are sending. It might be that driver uses hardware flow control, so test with all 4 combination of dtr and rts being high or low at the end of connection. Looks like toggling triggers reset which normally means the state is irrelevant, but that is the only reason I know why it might not communicate.

printman55

Here is the log where I try all combinations. Also as I said, I can write to the MCU by flashing other firmware onto it. Klipper sends back "OK" when I enter a command. It is only Repetier-firmware which does not acknowledge commands, even after reinstall. Tried a few different versions of the firmware as well.

Offl:6:56:36.315: Ignored (offline):M360 ; get configuration

Offl:6:56:36.315: Ignored (offline):M539 S1

Exec:6:56:36.315: @getip

Offl:6:56:36.316: Ignored (offline):M117 192.168.1.144:3344

Mesg:6:56:37.436: Dtr: true Rts: true

Mesg:6:56:37.436: Connection started

Mesg:6:56:37.436: Printer reset requested - emergency:false

Mesg:6:56:37.436: Dtr: false Rts: false

Recv:6:56:38.055: Connection verified by:wait

Recv:6:56:38.056: wait

Send:6:56:38.056: N0 M110 N0

Recv:6:56:39.058: wait

Mesg:6:56:40.058: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:40.058: wait

Send:6:56:40.058: N1 M999 ; In case we did not reset recover from fatal state

Recv:6:56:41.057: wait

Mesg:6:56:42.060: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:42.060: wait

Send:6:56:42.060: N0 M110 N0

Recv:6:56:43.060: wait

Mesg:6:56:44.063: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:44.063: wait

Send:6:56:44.063: N1 M105 ; fetch first temperature

Recv:6:56:45.063: wait

Mesg:6:56:46.062: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:46.062: wait

Send:6:56:46.062: N2 M105

Recv:6:56:47.066: wait

Mesg:6:56:48.065: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:48.065: wait

Send:6:56:48.065: N3 M105

Recv:6:56:49.065: wait

Mesg:6:56:50.068: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:50.068: wait

Send:6:56:50.068: N4 M105

Recv:6:56:51.067: wait

Mesg:6:56:52.071: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:52.071: wait

Send:6:56:52.071: N5 M105

Recv:6:56:53.070: wait

Mesg:6:56:54.070: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:54.070: wait

Send:6:56:54.070: N6 M105

Recv:6:56:55.073: wait

Mesg:6:56:56.073: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:56.073: wait

Send:6:56:56.073: N7 M105

Recv:6:56:57.076: wait

Mesg:6:56:58.076: Warning: Seems like we missed a ok - continue sending.

Recv:6:56:58.076: wait

Send:6:56:58.076: N8 M105

Recv:6:56:59.075: wait

Mesg:6:57:00.079: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:00.079: wait

Send:6:57:00.079: N9 M105

Recv:6:57:01.078: wait

Mesg:6:57:02.081: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:02.082: wait

Send:6:57:02.082: N10 M105

Recv:6:57:03.081: wait

Mesg:6:57:04.080: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:04.080: wait

Send:6:57:04.080: N11 M105

Recv:6:57:05.084: wait

Mesg:6:57:06.083: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:06.083: wait

Send:6:57:06.083: N12 M105

Recv:6:57:07.083: wait

Mesg:6:57:08.086: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:08.086: wait

Send:6:57:08.086: N13 M105

Recv:6:57:09.086: wait

Mesg:6:57:10.089: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:10.089: wait

Send:6:57:10.089: N14 M105

Recv:6:57:11.089: wait

Mesg:6:57:12.088: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:12.088: wait

Send:6:57:12.088: N15 M105

Recv:6:57:13.092: wait

Mesg:6:57:14.091: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:14.091: wait

Send:6:57:14.091: N16 M105

Recv:6:57:15.094: wait

Mesg:6:57:16.094: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:16.094: wait

Send:6:57:16.094: N17 M105

Recv:6:57:17.093: wait

Mesg:6:57:18.097: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:18.097: wait

Send:6:57:18.097: N18 M105

Recv:6:57:19.096: wait

Mesg:6:57:20.096: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:20.096: wait

Send:6:57:20.096: N19 M105

Recv:6:57:21.099: wait

Mesg:6:57:22.099: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:22.099: wait

Send:6:57:22.099: N20 M105

Recv:6:57:23.102: wait

Mesg:6:57:24.101: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:24.102: wait

Send:6:57:24.102: N21 M105

Recv:6:57:25.101: wait

Mesg:6:57:26.104: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:26.104: wait

Send:6:57:26.105: N22 M105

Recv:6:57:27.104: wait

Mesg:6:57:28.107: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:28.107: wait

Send:6:57:28.107: N23 M105

Recv:6:57:29.107: wait

Mesg:6:57:30.106: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:30.106: wait

Send:6:57:30.106: N24 M105

Recv:6:57:31.110: wait

Offl:6:57:31.204: Ignored (offline):M105

Offl:6:57:31.204: Ignored (offline):M115 ; Check firmware and capabilities

Offl:6:57:31.204: Ignored (offline):M220 S100 ; set speed multiplier

Offl:6:57:31.204: Ignored (offline):M221 S100 ; set flow multiplier

Offl:6:57:31.204: Ignored (offline):M355 ; get light status

Offl:6:57:31.204: Ignored (offline):G92 E0 ; reset extruder position

Offl:6:57:31.204: Ignored (offline):G90 ; absolute coordinates

Offl:6:57:31.204: Ignored (offline):M82 ; absolute E values

Offl:6:57:31.204: Ignored (offline):G21 ; units are mm

Offl:6:57:31.204: Ignored (offline):M114 ; check position

Offl:6:57:31.204: Ignored (offline):M111 S6 ; debug flags

Offl:6:57:31.204: Ignored (offline):M360 ; get configuration

Offl:6:57:31.204: Ignored (offline):M539 S1

Exec:6:57:31.204: @getip

Offl:6:57:31.206: Ignored (offline):M117 192.168.1.144:3344

Mesg:6:57:32.327: Dtr: false Rts: false

Mesg:6:57:32.328: Connection started

Mesg:6:57:32.328: Printer reset requested - emergency:false

Mesg:6:57:32.328: Dtr: true Rts: true

Recv:6:57:32.748: Connection verified by:start

Recv:6:57:32.749: Printer reset detected:start

Recv:6:57:32.750: start

Send:6:57:32.750: N0 M110 N0

Recv:6:57:32.753: Info:PowerUp

Recv:6:57:32.753: Detected EEPROM version:20

Recv:6:57:32.757: Info:Autoleveling enabled

Recv:6:57:32.765: Transformation matrix: 0.999993 0.000000 0.003764 0.000008 0.999998 -0.002148 -0.003764 0.002148 0.999991

Recv:6:57:32.769: zDistortionCorrection:1

Recv:6:57:32.769: Free RAM:84360

Recv:6:57:32.770: SD init fail

Recv:6:57:32.773: SelectExtruder:0

Recv:6:57:32.773: FlowMultiply:100

Recv:6:57:33.555: wait

Mesg:6:57:34.554: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:34.554: wait

Send:6:57:34.555: N1 M999 ; In case we did not reset recover from fatal state

Recv:6:57:35.558: wait

Mesg:6:57:36.557: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:36.557: wait

Send:6:57:36.557: N0 M110 N0

Recv:6:57:37.561: wait

Mesg:6:57:38.560: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:38.560: wait

Send:6:57:38.560: N1 M105 ; fetch first temperature

Recv:6:57:39.560: wait

Mesg:6:57:40.563: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:40.563: wait

Send:6:57:40.563: N2 M105

Recv:6:57:41.563: wait

Mesg:6:57:42.562: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:42.562: wait

Send:6:57:42.562: N3 M105

Offl:6:57:43.004: Ignored (offline):M105

Offl:6:57:43.004: Ignored (offline):M115 ; Check firmware and capabilities

Offl:6:57:43.004: Ignored (offline):M220 S100 ; set speed multiplier

Offl:6:57:43.004: Ignored (offline):M221 S100 ; set flow multiplier

Offl:6:57:43.004: Ignored (offline):M355 ; get light status

Offl:6:57:43.004: Ignored (offline):G92 E0 ; reset extruder position

Offl:6:57:43.004: Ignored (offline):G90 ; absolute coordinates

Offl:6:57:43.004: Ignored (offline):M82 ; absolute E values

Offl:6:57:43.004: Ignored (offline):G21 ; units are mm

Offl:6:57:43.004: Ignored (offline):M114 ; check position

Offl:6:57:43.005: Ignored (offline):M111 S6 ; debug flags

Offl:6:57:43.005: Ignored (offline):M360 ; get configuration

Offl:6:57:43.005: Ignored (offline):M539 S1

Exec:6:57:43.005: @getip

Offl:6:57:43.006: Ignored (offline):M117 192.168.1.144:3344

Mesg:6:57:44.124: Dtr: true Rts: true

Mesg:6:57:44.125: Connection started

Mesg:6:57:44.125: Printer reset requested - emergency:false

Mesg:6:57:44.125: Dtr: true Rts: false

Recv:6:57:44.565: Connection verified by:wait

Recv:6:57:44.566: wait

Send:6:57:44.566: N0 M110 N0

Recv:6:57:45.568: wait

Mesg:6:57:46.568: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:46.568: wait

Send:6:57:46.568: N1 M999 ; In case we did not reset recover from fatal state

Recv:6:57:47.567: wait

Mesg:6:57:48.571: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:48.571: wait

Send:6:57:48.571: N0 M110 N0

Recv:6:57:49.570: wait

Mesg:6:57:50.574: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:50.574: wait

Send:6:57:50.574: N1 M105 ; fetch first temperature

Recv:6:57:51.573: wait

Mesg:6:57:52.573: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:52.573: wait

Send:6:57:52.573: N2 M105

Recv:6:57:53.576: wait

Mesg:6:57:54.576: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:54.576: wait

Send:6:57:54.576: N3 M105

Recv:6:57:55.575: wait

Mesg:6:57:56.578: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:56.579: wait

Send:6:57:56.579: N4 M105

Recv:6:57:57.578: wait

Mesg:6:57:58.581: Warning: Seems like we missed a ok - continue sending.

Recv:6:57:58.581: wait

Send:6:57:58.582: N5 M105

Recv:6:57:59.581: wait

Mesg:6:58:00.580: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:00.580: wait

Send:6:58:00.580: N6 M105

Recv:6:58:01.584: wait

Mesg:6:58:02.583: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:02.583: wait

Send:6:58:02.583: N7 M105

Recv:6:58:03.587: wait

Mesg:6:58:04.586: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:04.586: wait

Send:6:58:04.586: N8 M105

Recv:6:58:05.586: wait

Mesg:6:58:06.589: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:06.589: wait

Send:6:58:06.589: N9 M105

Recv:6:58:07.588: wait

Mesg:6:58:08.592: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:08.592: wait

Send:6:58:08.592: N10 M105

Recv:6:58:09.591: wait

Mesg:6:58:10.591: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:10.591: wait

Send:6:58:10.591: N11 M105

Recv:6:58:11.594: wait

Mesg:6:58:12.594: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:12.594: wait

Send:6:58:12.594: N12 M105

Recv:6:58:13.593: wait

Mesg:6:58:14.597: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:14.597: wait

Send:6:58:14.597: N13 M105

Recv:6:58:15.596: wait

Mesg:6:58:16.600: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:16.600: wait

Send:6:58:16.600: N14 M105

Recv:6:58:17.599: wait

Mesg:6:58:18.598: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:18.598: wait

Send:6:58:18.598: N15 M105

Recv:6:58:19.602: wait

Offl:6:58:20.045: Ignored (offline):M105

Offl:6:58:20.045: Ignored (offline):M115 ; Check firmware and capabilities

Offl:6:58:20.045: Ignored (offline):M220 S100 ; set speed multiplier

Offl:6:58:20.045: Ignored (offline):M221 S100 ; set flow multiplier

Offl:6:58:20.045: Ignored (offline):M355 ; get light status

Offl:6:58:20.045: Ignored (offline):G92 E0 ; reset extruder position

Offl:6:58:20.045: Ignored (offline):G90 ; absolute coordinates

Offl:6:58:20.045: Ignored (offline):M82 ; absolute E values

Offl:6:58:20.045: Ignored (offline):G21 ; units are mm

Offl:6:58:20.045: Ignored (offline):M114 ; check position

Offl:6:58:20.045: Ignored (offline):M111 S6 ; debug flags

Offl:6:58:20.045: Ignored (offline):M360 ; get configuration

Offl:6:58:20.045: Ignored (offline):M539 S1

Exec:6:58:20.045: @getip

Offl:6:58:20.046: Ignored (offline):M117 192.168.1.144:3344

Mesg:6:58:21.166: Dtr: true Rts: false

Mesg:6:58:21.166: Connection started

Mesg:6:58:21.166: Printer reset requested - emergency:false

Mesg:6:58:21.166: Dtr: false Rts: true

Recv:6:58:21.605: Connection verified by:wait

Recv:6:58:21.606: wait

Send:6:58:21.606: N0 M110 N0

Recv:6:58:22.604: wait

Mesg:6:58:23.604: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:23.604: wait

Send:6:58:23.604: N1 M999 ; In case we did not reset recover from fatal state

Recv:6:58:24.607: wait

Mesg:6:58:25.607: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:25.607: wait

Send:6:58:25.607: N0 M110 N0

Recv:6:58:26.606: wait

Mesg:6:58:27.610: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:27.610: wait

Send:6:58:27.610: N1 M105 ; fetch first temperature

Recv:6:58:28.609: wait

Mesg:6:58:29.612: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:29.613: wait

Send:6:58:29.613: N2 M105

Recv:6:58:30.612: wait

Mesg:6:58:31.611: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:31.611: wait

Send:6:58:31.611: N3 M105

Recv:6:58:32.615: wait

Mesg:6:58:33.614: Warning: Seems like we missed a ok - continue sending.

Recv:6:58:33.614: wait

Send:6:58:33.614: N4 M105

Repetier

I agree that serial is in general working. Question is why does firmware not see any messages being send.

I think you are using a due based board. Does it have 2 serials like original due? Maybe try using the other serieal instead. Also did you try connecting with arduino serial monitor and send a command there like
M115
M105

to see if it works there?

And since you mention klipper - I hope no other software tries to connect in parallel to it, also it does not look like this. All responses are complete and wait in 1s interval as expected.

printman55

It is an Atmel Sam3x8e just like the Arduino due. I have connected with the Arduino IDE Serial Monitor with my laptop and I get the same behaviour. I only get output in the Serial Monitor. I can send input, but there are no "ok 0" sent back to me or any other type of acknowledge. This used to work before as well. There is another port I tried but my laptop does not recognise it and it does not work with the raspberry pi on the printer either.

Arduino IDE Serial monitor:

<div>

start

Info:PowerUp

Detected EEPROM version:20

Info:Autoleveling enabled

Transformation matrix: 0.999993 0.000000 0.003764 0.000008 0.999998 -0.002148 -0.003764 0.002148 0.999991

zDistortionCorrection:1

Free RAM:84360

SD init fail

SelectExtruder:0

FlowMultiply:100

wait

wait

wait

wait

wait

wait

wait

wait

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Arduino Due (Programming Port)

on /dev/cu.usbmodem21401

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Repetier

I have no idea how you can make firmware not read input at the moment. I assume you only have configured one serial and not 2 serials being the same or anything else strange in communication.

You might try with a default config from our config tool just set to board/serial output and see if it communicates. That is normally working well, so you have a starting point from where you can enable your other settings until you find out what is causing it.