MKS tft and Octoprint Control over USB

[merlin2105]

my MKS tft is now running on a Ramps 1.4, if I have connected the tft the control via USB (Octoprint) does not work anymore ... is that the same USB port ..? can one adjust this in Marlin?

[makerbase-mks]

USB and TFT serial ports are shared and cannot be controlled at the same time.

[merlin2105]

works this with an MKS SBase Board , the tft an Octoprint over USB at the same time..?

[sb43201]

Could you add a function to disable TFT serial communication to let print from USB port?

[pyr0ball]

Would it be possible to connect an OctoPi to the MKS TFT WiFi UART pins to control it that way?

[philoupat]

It is possible to connect with octoprint on RX2 TX2 pins on the Gen l v1.4 wifi With ftdi module . There is a port conflict usb with the map and the Ecran TFT if connexion simultaneous (USB0 AUX1(rx0 Tx0)) the temperature when printing the Heating Temperature appears and then comes back to the room.Marlin usb alteration port 0 ?
thanks

[philoupat]

Pins above aux2 indicate RX2 TX2 WIFI

[jimmyeao]

So do I read this right? If we have a MKS TFT board plugged in, we can no longer use Octoprint to print via usb? This would explain all the crc errors i am seeing

[Andrei-Pozolotin]

See #285

[didtoknan]

The TFT32 is connected to the AUX 1 MKS Gen L port. According to the schematic, 2 pins are 5V, 2 are Ground, 1 is D1 and the last one is D2. What about wiring a dpdt switch to disconnect for example D1 & D2 ? We could flip that switch before starting a print from octoprint. Once is done and we want to use the TFT32, we will just have to switch the flip the other side. In fact we may only need a spdt (or spst) switch to disconnect the TX pin. I thought the MKS Gen L was based on a Arduino Mega but it looks I'm wrong because serial pins on Mega are D0 & D1, not D1 & D2.

[didtoknan]

According to the MKS Gen L datasheet TX is D2, RX is D1.

[Stady234]

I maybe out on a limb by myself... but I have been printing via octoprint on an MKS Gen L with the TFT3.2 connected without issues...
Are you sure you have everything connected the right way?

[Muskateer10]

My OctoPrint works. The problem is every time I want to make a change to Marlin I have to disconnect the TFT32 display. It is because there is a conflict with D1 and D2 on Aux1 (which is also the USB port).

[Stady234]

@Andrei-Pozolotin I see that you keep posting for an alternative fw solution... does the CNC version you have referenced in the thread work for us normal printer users?

@Muskateer10 I have the same issue... i use the remote firmware push with octoprint, i have a note on my screen to disconnect the TFT before the push, then back to normal operation...