MKS Serial protocol

[luc-github]

Some notes on MKS serial :
0 - be sure it is enabled #define COMMUNICATION_PROTOCOL MKS_SERIAL
1 - ESP3D baud rate must be 115200 as it is MKS specs
2 - Several commands are filtered by TFT / Printer MKS code
so Marlin printer panel may not work - at least today, this is out of scope of ESP3D but feel free to list here what commands are not working, so it could help MKS team or anyone willing to work on it to check the fix/workaround is working
3 - You do not need to configure in Marlin the 2nd port on MKS Robin, this is handled by Marlin MKS code, doing it may bring some trouble in communication
4 - if you are not using MKS ESP boards but nodeMCU or whatever different board, you may experienced some upload failures, this is due to that upload speed is taillored to MKS devices, other board may be more sensitive to serial noise (EMI), so you may need to decrease the upload speed in Marlin Mks code and ESP3D code to compensate, which of course will affect upload speed...

[ColdBeer72]

I had everything configured just like your instructions for my Robin Nano V3 and MKS Wifi board. Everything at 115200bps (both Marlin and the compiled ESP3D). I tried with 2nd port but disabled it with this FAQ. But still no communication between the wifi board and the mainboard. Webdav disabled... But still can't communicate both boards. Any possible test?

[ColdBeer72]

To be clear, I had some kind of communication some days ago (I could see sd card content, or start fan...) but never could check marlin parameters. Anyway, at the moment I'm totally stopped because there is no communication at all.

[Freddyb888]

I have the same problem now. Do t know what to do, flashed it 3 times already

[luc-github]

Marlin parameters is not working is kind of normal it is MKS limitation as mentioned above

Nothing changed between when working and not working ? FW update ? hardware change ? power cut ?

[ColdBeer72]

Lots of firmware updates :-D :-D :-D But nothing really important. This is a new board and I'm in the process of fine tunning (TMC drivers, speed, acceleration, bltouch...).
So, basically, with MKS and ESP3D, there is not so much to do with the board?

[luc-github]

if many fw update and before was working -> it is user issue using wrong setting somewhere

[luc-github]

MKS and ESP3D, there is not so much to do with the board?

What do you mean ?

[luc-github]

well I have control with mks code but not all feedback : sd list is working temperatures are working jog is working

[ColdBeer72]

Sorry Luc, but I think that's not correct: temps are not working... and I'm not sure what do you want to say telling "jog". For me, just SD and order printing is working. I could send gcodes through terminal but not having feedback (the answer for any codes) so atm we can't say we're having "partial feedback", just no feedback at all.

[luc-github]

I mean on my system :
M20 / M105 / M115 give feedback
Jog is jogging commands to move extruder
so if on your side you have zero feedback from Marlin you may have another issue (Marlin configuration? connection issue between MKS TX and ESP RX ?)

What output in WebUI terminal for :
M105
M20
M115

Edit: I used https://github.com/makerbase-mks/Mks-Robin-Nano-Marlin2.0-Firmware not https://github.com/MarlinFirmware/Marlin, additionally it could be also a broken code in Marlin since I ported the code

[ColdBeer72]

This is my output for those commands (verbose mode on):

> M20
Begin file list
TSD9C3~5.GCO
TSD99D~5.GCO
RET.DIR
TST40-~9.GCO
TST40-~8.GCO
TST40-~7.GCO
TST40-~6.GCO
TST40-~5.GCO
TESTS.DIR
TST40-~4.GCO
TST40-~3.GCO
TST40-~2.GCO
TST40-~1.GCO
End file list
ok
> M105
ok
T: / B: / T0: / T1: / @:0 B@:0
> M115
ok
FIRMWARE_NAME:Robin_nano

The answer for M105 is false, totally false, because printer is at this moment preheated (and finished) for PLA.

If "jog" is moving headset/nozzle/hotend/extruder, then YES, it moves, but sincerely, that's the less interesting thing at all.

I supposed you were talking about the MKS's Marlin version but as LVGL code in official Marlin is developed by MKS, the "filter" is on both versions. Anyway, we have a bit step further and could say that feedback from gcodes are present, so a little step (actually, btw, there is no "upload" button on files section).

[luc-github]

> M20
Begin file list
TSD9C3~5.GCO
TSD99D~5.GCO
RET.DIR
TST40-~9.GCO
TST40-~8.GCO
TST40-~7.GCO
TST40-~6.GCO
TST40-~5.GCO
TESTS.DIR
TST40-~4.GCO
TST40-~3.GCO
TST40-~2.GCO
TST40-~1.GCO
End file list
ok
> M105
ok
T: / B: / T0: / T1: / @:0 B@:0
> M115
ok
FIRMWARE_NAME:Robin_nano

So communication is working - Temperature issue is on Marlin side not ESP3D, cannot show what is not presented

there is no "upload" button on files section

You should have:

Did you enabled Printer SD in WebUI settings ?

[themacboy]

I just installed correctly all, and I get good feedback on my Mks Robin Nano v.3. I'm not using MKS ui (LVGL), I'm using Marlin Color UI. Unfortunately I can't upload files on my sd card or USB driver. Upload icon is missing when selected. El vie., 7 may. 2021 12:22, Luc ***@***.***> escribió:

…

I mean on my system : M20 / M105 / M115 give feedback Jog is jogging commands to move extruder so if on your side you have zero feedback from Marlin you may have another issue (Marlin configuration? connection issue between MKS TX and ESP RX ?) What output in WebUI terminal for : M105 M20 M115 — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#620 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB5QVX6P5FAQQTOLGRKPWU3TMO5OXANCNFSM43EIVRKA> .

[luc-github]

as mentionned you use Marlin repository which is often broken due to permanent updates - I used MKS repository as I know it is stable for MKS boards
So I am not sure they are at the same level of code - a good example is temperatures reporting ...

So Marlin Color UI is not related at all with MKS - So I do not know if MKS protocol can be enabled in that case - better ask MKS or Marlin

[ColdBeer72]

You're wrong. I use MKS repository with LVGL UI

[luc-github]

Then something is broken in MKS repository - I used december version - if it can help - but as you can see your Marlin version is not giving temperatures - so issue is in Marlin part, MKS repository as now you say, but not ESP3D - I suggest you to raise issue to them

[ColdBeer72]

That's the point, Luc!!!

My intention is to concentrate most possible knowledge about ESP3D and MKS issues to could give them the truth information, not just issues. I want they understand that collaborating with ESP3D could give them a step ahead the competence.

That's why I just want to clarify those differences and every test. ;-)

[themacboy]

Then something is broken in MKS repository - I used december version - if it can help - but as you can see your Marlin version is not giving temperatures - so issue is in Marlin part, MKS repository as now you say, but not ESP3D - I suggest you to raise issue to them

@ColBeer72
I use MKS repository but with the LVGL disabled. ANd I get good feedbask from board. hehehe

[LLHCrack]

I can't get any feedback on M114 to get location information on esp3d. M27 can get feedback on the printing progress, but it's all 0. marlin2.0.9.3 robin nano v1.2

[luc-github]

yes Marlin MKS code filter M114 like several others as mentionned above, about M27 I remember it is a bug in MKS Marlin code

[ETE-Design]

MKS Robin Lite - Wifi Module Direct on mainboard... No TFT just a regular LCD12864... Will it be possible to use Fast Transfer Protocol? Using Marlin Bugfix 2.0.x from Marlin's Github...

[luc-github]

does MKS wifi Code is present with this configuration ?
https://github.com/MarlinFirmware/Marlin/tree/2.0.x/Marlin/src/lcd/extui/mks_ui

[ETE-Design]

@luc-github So only a feature possible to use if you use Marlin from MKS Github?

[luc-github]

no the code is already in Marlin repository for a while the link I gave is Marlin repository, did you checked?

[ETE-Design]

@luc-github I checked, there is some MKS Files and Wifi files... Remember that an old Version of MKS Own Firmware even had a menu in the LCD where you could search for network and connect it... But back to the case, Fast Transfer should work with LCD12864 if the MKS Wifi Modul is an addon module direct on the mainboard?

[luc-github]

so you know better Marlin than me, I do not use all config and I do not check code more than I need.
if the code I linked you is used then mks protocol is used if not I do not know what must be done on Marlin side to enable it