Lerdge: ST7796S_INVERTED, Pins & Variant changes

[tpruvot]

• st7796s.h was not included with LERDGE_ST7796 TFT_DRIVER
• Resolution was incorrectly set to 320x240
• Allow also CLASSIC_UI builds (FSMC_CS_PIN & FSMC_RS_PIN)
• Cleaned SDIO/SOFT SPI SD definitions
• Allow I2C EEPROM on the Lerdge S

Note: All lerdge boards use the same 3.5" TFT display, so the HAS_FSMC_TFT section was added to the X & S boards.

Related to Issue #21815

[tpruvot]

So, small report : the LERDGE X stm32 variant is actually set like the K & S boards but is a 100pin F407VE... I actually dont have this board but ive doubts it can work like it is...

Else i found a possible issue in LERDGE variant which define SPI pins with the Z Driver STEP pin... to dig later...
buildroot/share/PlatformIO/variants/MARLIN_LERDGE/variant.h
#define PIN_SPI_SS PF11 // ZSTEP !

Else with this PR, both CLASSIC_UI & COLOR_UI works correctly on the Lerdge K v1.0.1, and SD card is correctly detected. All that without the need of Lerdge bootloader...

Ignore the noise in the top, its just uncommitted code made for a 320x240 display ;)

Only the I2C EEPROM works, SPI is a big mess...

[tpruvot]

If someone has a Lerdge S board, could you check if there are 2 eeprom (SPI+I2C) on the board (i think they have, but i cant find pictures detailed enough to be sure)

Lerdge X (seems the bottom middle one)

Lerdge S (near the Flat cable connector)

Lerdge K (near the Flat cable connector)

The K has both, and only the I2C one do the job... for now

If someone can check that, please try to give us the 2 SDA/SCL pins required.

Pins on the S are probably the same as the K, its the same SoC.. Label on the K is FM24CL64BG (CYP1813) 64Kb F-RAM
https://4donline.ihs.com/images/VipMasterIC/IC/CYPR/CYPR-S-A0008033726/CYPR-S-A0008033726-1.pdf?hkey=CECEF36DEECDED6468708AAF2E19C0C6 (PG13 & PG14)

@xC0000005 You still have the Lerdge S board ?

Edit: the X already use I2C EEPROM... so just the S to confirm...

[thinkyhead]

With the last commit I propose to get rid of the extra TFT_DRIVER value "LERDGE_ST7796" and replace it with the option ST7796S_INVERTED instead, since the only difference in the init sequence compared to ST7796 is that it is inverted. It should thus also work with AUTO.

[tpruvot]

yep i seen that, about to try here... to see if that fixes the resolution (its why i added the define LERDGE_TFT35)

[thinkyhead]

Sorry to hit and run, but I had better get some sleep. I'll check in on PRs again in ~10 hours.

[thinkyhead]

for the EXTI module, its for all stuff using attachInterrupt() like the endstop interrupt feature

Ah yes, I saw a note about that. I'll be sure to put comments on all those options as I learn which ones are needed and what they do.

[dolence]

Lot of work being done on this board. This is good :) Anyone tried dual Z motors and individual Z switches? I was having some weird issues with this configuration and can't help much doing tests because my machine was built using this configuration.