ellensp
commented
1 month ago It was a trap to draw owners of this lcd_i2c_panelolu2 display out of the woodwork (no not really, just a potentially useful coincidence)
If you would be so kind, please take hires pictures of the front and back of this display PCB and attach them so they can be added to
https://marlinfw.org/docs/hardware/controllers.html#lcd_i2c_panelolu2
I have confirmed this issue still exists in bugfix 2.1.x
I have created a PR to fix this.
KevWal
Did you test the latest
bugfix-2.1.xcode?No, but I will test it now!
Bug Description
After setting "#define SERIAL_PORT_2 2" in Configuration.h Marlin 2.1.2.4 doesn't compile due to the error "#error "Serial Port 2 pin D16 and/or D17 conflicts with another pin on the board."" from SanityCheck.h.
This is due to the setting of "#define LCD_PINS_EN EXP1_03_PIN" in pins_RAMPS.h, even though Pin 17 (#define EXP1_03_PIN AUX4_17 // 17) is not used by my #define LCD_I2CPANELOLU2 LCD (see https://web.archive.org/web/20201125221424im/http://1.bp.blogspot.com/-hy4fhgAV3gc/UXcPlS0FsFI/AAAAAAAAAWk/zxEO8xD9eCY/s640/Ramps_Adapter_Schematic.png)
Commenting out #define LCD_PINS_EN EXP1_03_PIN in the " #if ANY(MKS_12864OLED, MKS_12864OLED_SSD1306)" section of pins_RAMPS.h allows compilation and all appears to work fine.
Bug Timeline
Noticed 16/07/2024
Expected behavior
Expected successful compilation
Actual behavior
Failed compilation
Steps to Reproduce
define LCD_I2C_PANELOLU2
define SERIAL_PORT_2 2
Version of Marlin Firmware
2.1.2.4
Printer model
GC I3 - https://web.archive.org/web/20160411113355/http://www.emakershop.com/browse/listing?l=964
Electronics
RAMPS 1.4
LCD/Controller
Panelolu2
Other add-ons
No response
Bed Leveling
None
Your Slicer
Slic3r
Host Software
Pronterface
Don't forget to include
Configuration.handConfiguration_adv.h.Additional information & file uploads
Config.zip