Send gcode to SKRv1.3

[lunknowl]

hi, i try to send simple gcode to new board skrv1.3 `from printrun.printcore import printcore from printrun import gcoder import os import sys import time

p = printcore() p.connect('COM19', 250000) while not p.online: time.sleep(2)

p.send_now("G1 X10 F24000") time.sleep(0.1)`

but stepper not moving, im able to jog using pronterface software? how can i send gcode using python to this board? this code is working on ramp1.4 thanks

[volconst]

probably the program exits before the command is sent to/processed by the printer. Put a longer sleep at the end but better use this code https://github.com/kliment/Printrun/issues/1192#issuecomment-840689700

[lunknowl]

i think the skr1.3 is not connect `from printrun.printcore import printcore from printrun import gcoder import sys import time

-----------------

p = printcore() p.connect('COM19', 250000) while not p.online: time.sleep(0.1)

-----------------

ok_counter = 0 def count_oks(line): global ok_counter if 'ok' in line: ok_counter += 1

def wait_oks(target_count): while ok_counter < target_count: time.sleep(.1)

p.recvcb = count_oks

ok_counter=0 p.send_now("G1 X10 Y0 Z0 F24000") wait_oks(1)

ok_counter=0 p.send_now("M114") wait_oks(1)`

the skr isnt doing anything, waiting for something, but if im using pronterface, it work.

*just a update, i try to use skr 1.3 with smoothie firmware and i work. with marlin firmware it just waiting for something.

[volconst]

Some marlin versions does not emit the correct messages on connection. In pronterface, enable 'Debug communications' in the menu, connect to printer, and paste the log pane contents here. But if this was the reason, the pronterface GUI and the script would behave the same. Are you using the same codebase for pronterface and the script?

[lunknowl]

pronterface printrun version 1.6.0, - python printrun version 2.0.0rc7 - the debug information SENT: M105 RECV: ok T:-15.00 /0.00 B:-15.00 /0.00 @:0 B@:0

[volconst]

Please include the whole log after enabling "Debug communication" and pressing the connect button.

[lunknowl]

this is the whole log on skr1.3 board with pronterface printrun v2.0.0rc7 Connecting... SENT: M105 RECV: ok T:-15.00 /0.00 B:-15.00 /0.00 @:0 B@:0 Printer is now online. SENT: M105 RECV: ok T:-15.00 /0.00 B:-15.00 /0.00 @:0 B@:0

and this is the script for python on printrun v2.0.0rc7 `from printrun.printcore import printcore from printrun import gcoder import sys import time

-----------------

p = printcore() p.connect('COM19', 250000) while not p.online: time.sleep(0.1)

-----------------

ok_counter = 0 def count_oks(line): global ok_counter if 'ok' in line: ok_counter += 1

def wait_oks(target_count): while ok_counter < target_count: time.sleep(.1)

p.recvcb = count_oks

ok_counter=0 p.send_now("G1 X10 Y0 Z0 F24000") wait_oks(1)

ok_counter=0 p.send_now("M114") wait_oks(1)`

the log for the script is blank/nothing (waiting for something)

i double check the baudrate and port is same, printrun core case is same version

[volconst]

The script is waiting for printer greeting - usually 'start'. The log shows that the printer does not greet. Try pressing pronterface Reset button after you press connect or printer/hardware reset/power button. Do you have a DTR setting in pronterface 1.6 settings? Is it checked? If not check it and connect again. Pronterface 1.6 is very old. Install the latest release and enable DTR setting there.

Another approach is to send a M105 command in the script

p.connect('COM19', 250000)
while not p.online:
  p.send_now("M105")
  time.sleep(0.1)

This will make the printer send 'ok' and the online flag will be set. But the problem with this is that ok counting may be wrong - we do not know how many M105 were never delivered to the printer and how many 'ok' we should receive.

Another approach is to remove the while not p.online and leave a greater sleep hoping the connection is established.

[lunknowl]

well the problem is i can able to connect using pronterface but when using pythons script `from printrun.printcore import printcore from printrun import gcoder import sys import time

-----------------

p = printcore() p.connect('COM19', 115200) while not p.online: p.send_now("M105") time.sleep(0.1)

-----------------

def recv_callback(line): print("line")

-----------------

p.recvcb = recv_callback p.send_now("M119")`

ERROR:root:Not connected to printer. ERROR:root:Not connected to printer.

this is what i get now

[volconst]

It is expected to get some "Not connected to printer" messages, because we are sending them while we wait the connection. You can swap the send_now('M105') and sleep, and increase the sleep to reduce the count (to 0). The script should be able to connect after some error messages.

[lunknowl]

It is expected to get some "Not connected to printer" messages, because we are sending them while we wait the connection. You can swap the send_now('M105') and sleep, and increase the sleep to reduce the count (to 0). The script should be able to connect after some error messages.

i dont think it connect - already 5 mins still ERROR:root:Not connected to printer. the weird is when i using pronterface, i can connect the printer with differetn baudrate .

[volconst]

You should use the same baud rate as pronterface, Your last baud rate is 115200, so it is no surprise that it does not work.

[volconst]

Move the callback subscription before connect so you see if the printer sends some message

def recv_callback(line):
  print("got", line)
p.recvcb = recv_callback
p.connect('COM19', 250000)

[lunknowl]

You should use the same baud rate as pronterface, Your last baud rate is 115200, so it is no surprise that it does not work.

i using baudrate 115200 as a default for pronterface, python script and firmware, i just saying that on pronterface, i can select different baudrate and it still working

[lunknowl]

Move the callback subscription before connect so you see if the printer sends some message

def recv_callback(line):
  print("got", line)
p.recvcb = recv_callback
p.connect('COM19', 250000)

i try and it still say "ERROR:root:Not connected to printer."

[volconst]

What is your marlin version? add:

p.loud = True
p.connect(...)

and paste the log.

Another workaround that may work:

p.connect(...)
time.sleep(1)
p.online = True

[lunknowl]

What is your marlin version? add:

p.loud = True
p.connect(...)

and paste the log.

Another workaround that may work:

p.connect(...)
time.sleep(1)
p.online = True

hi,im using the marlin 2.0.x, the "p.online=true" is working, but for Gcode motion only (G1 X10 F100) but not for Mcode (M119), is there different for them?

`from printrun.printcore import printcore from printrun import gcoder import sys import time

-----------------

p = printcore()

p.connect('COM19', 115200) time.sleep(0.1) p.online = True while not p.online: time.sleep(0.1)

-----------------

ok_counter = 0 def count_oks(line): global ok_counter print(line) if 'ok' in line: ok_counter += 1

def wait_oks(target_count): while ok_counter < target_count: time.sleep(0.1)

p.recvcb = count_oks

ok_counter=0 p.send_now("M119") /// if im using "p.send_now("G1 X10 F100")" in this line,machine is working wait_oks(1) `

i get blank log when using "p.send_now("M119") , finish without "print(line)"

[volconst]

Paste log when you add

p.connect(...)
p.loud = True

[lunknowl]

Paste log when you add

p.connect(...)
p.loud = True

like i say, blank log, waiting for something, usually "ERROR:root:Not connected to printer"

[volconst]

like i say, blank log, waiting for something, usually "ERROR:root:Not connected to printer"

After p.online = True you should not see "Not connected to printer"

[lunknowl]

like i say, blank log, waiting for something, usually "ERROR:root:Not connected to printer"

After p.online = True you should not see "Not connected to printer"

no i dont see anything, it just blank like waiting for something, usually when finish script i received a right arror symbol icon ">>> " but when i run the script it just blank like

Python Type "help", "copyright", "credits" or "license()" for more information. ">>> " =================== RESTART: test.py =================== ">>> "

this is the p.send_now("G1 X10 F100") log

Python Type "help", "copyright", "credits" or "license()" for more information. ">>> " =================== RESTART: test.py =================== (blank)

this is the p.send_now("M119") log

[volconst]

Oh, nooo. You are running the code in some interactive interpreter, probably opening the port multiple times in the same process. Do not do this. Always run the script in a new process, after the previous process has exited. In the cmd window type python3 myscript.py I am not sure if the exiting of the process is sufficient for clearing port state, the problem may arise because of lack of p.disconnect() in the previous process. The script should include a p.disconnect() either in event handler or at the end of the script probably in a try ... except KeyboardInterrupt block

[lunknowl]

"python test.py _" same result i still think that p.connect not connect or something, but the "G1 X10 F2400" working, same code everything is same just change "G1 X10 F2400" to "M114" and not working, really weird.

[volconst]

Do you see 'ok' for the G1 command. It is possible that the reading from the printer is broken. G1 could move the head even if we cannot read from the printer. The M119 could arrive at the printer as G1, and only the response may have problem. You also have to be sure that there is no other program that has the port open - can be Cura, pronterface, or the script. Watch your task manager for such processes.

[lunknowl]

i dont see the ok for G1 command also. just a question, how can i specify the databit, stopbit, parity, and flow control?

[volconst]

You have to edit this code https://github.com/kliment/Printrun/blob/c451359a35d502a8e446702d3cf94cae9e50c0de/printrun/printcore.py#L253-L255

[lunknowl]

You have to edit this code https://github.com/kliment/Printrun/blob/c451359a35d502a8e446702d3cf94cae9e50c0de/printrun/printcore.py#L253-L255

this is what i change

self.printer = Serial(port = self.port,
                                              baudrate = self.baud,
                                              timeout = None,
                                              parity = PARITY_NONE,
                                              stopbits=1,
                                              bytesize=8,
                                              rtscts=False,
                                              dsrdtr=False,
                                              xonxoff = False
                                              )

and i get this error ERROR:root:Could not connect to COM19 at baudrate 115200: Serial error: Port is already open.

[volconst]

If you provide port in the constructor it is automatically opened and after that in the code it is opened again - remove the port parameter.

[lunknowl]

If you provide port in the constructor it is automatically opened and after that in the code it is opened again - remove the port parameter.

so i think the port is open but not accept gcode if i use "p.online = True", Gcode work, Mcode still doesnt work if i not use "p.online = True", nothing work.

[sarmadsiddiqui]

I had a similar problem, where I couldn't connect to an SKR v1.3 board. I tried more or less everything mentioned here to no avail. If I connected using the GUI with pronterface.py, or with the console using pronsole.py I would connect and send commands just fine. After tracing out all the connect commands in the two files, I added the following print statement to the beginning of the connect function in printcore.py:

    @locked
    def connect(self, port = None, baud = None, dtr=None):
        """Set port and baudrate if given, then connect to printer
        """
        print(f'sms: port: {port}, baud: {baud}, dtr: {dtr}')

        if self.printer:
            self.disconnect()

(The pronterface script calls the printcore class for the connection methods). As I never entered a dtr value, it automatically goes through some logic and assigns dtr as True. Knowing this (after seeing the value printed), I went back to the example script shows in the Read Me but entered the following command (copy/pasting and editing the first post's code here):

p = printcore()
p.connect('COM19', 250000, True)
while not p.online:
time.sleep(2)

So basically, added the dtr arugment as True in the connect call. And then all the commands went through as expected. I hope this doesn't cause me problems later, but so far so good.