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teeminus / NoTouchScreenFirmware

Stripped down version of BIGTREETECH-TouchScreenFirmware which only supports ST7920 emulation (Marlin Mode)
GNU General Public License v3.0
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Rotated screen on Artillery Sidewinder X1 #8

Closed jangrewe closed 3 years ago

jangrewe commented 3 years ago

Hi, i tried MKSTFT28.bin on my Artillery Sidewinder X1 with a MKS TFT28 3.2, and it flashed without problems and now displays the "ST7920Emulator ready" screen, but i guess due to how the screen is built into the printer case, all text is upside down. Can you maybe create a version that flips the output vertically?

teeminus commented 3 years ago

Can you please show me a picture of your printer screen to clarify your situation? Is the screen rotated by 180° or is the screen flipped?

jangrewe commented 3 years ago

Sorry, yes, it's flipped vertically and horizontally, or: rotated by 180° 😆

https://i.snipboard.io/eEv0Lq.jpg

teeminus commented 3 years ago

Are you okay with compiling the firmware yourself? Then I could give you an untested solution for you problem.

jangrewe commented 3 years ago

Sure, just put it in a branch and i'll give it a shot! 👍

teeminus commented 3 years ago

Check out this branch: https://github.com/teeminus/NoTouchScreenFirmware/tree/add_rotate180_support Uncomment the define on this line https://github.com/teeminus/NoTouchScreenFirmware/blob/add_rotate180_support/src/User/main.cpp#L13 and recompile for your display. I gave the fix a short test and it looked fine.

jangrewe commented 3 years ago

Thanks, that worked perfectly! I still need to test the actual functionality, but at least i don't need to break my neck now 😁

jangrewe commented 3 years ago

Unfortunately it seems as if the MKS TFT28 is unusable with your firmware, as it only has a UART, not an SPI connection. Maybe i'm completely off, but i consulted with a friend because i couldn't figure out the pins for the [display] section, and he said that even rewiring it to the MKS Gen L's EXP-1 header (instead of AUX-1) probably won't help much, because it doesn't speak SPI. Am i missing something, or is it really completely hopeless?

Here are the datasheets: Display: https://www.roboter-bausatz.de/media/pdf/04/6c/d6/MKS-TFT28-32-datasheet.pdf (page 10) Board: http://sl3d.ch/wp-content/uploads/2019/11/MKS-Gen-L.pdf (page 8)

PS: sorry for self-hijacking this issue, i'm happy to open a new one if you prefer.

teeminus commented 3 years ago

I would have prefered a new ticket for that but I am fine with discussing the issue here as well 😁

TBH. I don't know any MKS screens or mainboards. What's made me curious is that the firmware in the BTT sources is named MKS_TFT28_V1_0 but I could not find any information about that particular revision online. However there is a note in the BTT sources on how to use the screen in Marlin mode: https://github.com/bigtreetech/BIGTREETECH-TouchScreenFirmware/blob/923c5e01d41f08a0ea6945b2291ab5665bbf7b5c/TFT/src/User/Variants/pin_MKS_TFT32_V1_4.h#L82

It seems like that you only need the PB3 (SCK) and PB5 (MOSI) pins of the TFT as both the MISO and CS are disabled for the SPI and used by other parts of the TFT.

It should be obvious but just to be clear here: I do not advise you to solder on your TFT or mainboard. If you are brave enough to do that it's at your own risk.

However if you willing to go for it I am very interested in the results. And if it works I would appreciate if you share both your experiences (and maybe build steps) and your config with us 😄