[Bug] Missing 1-Pixel Offset in Touch Coordinate Inversion (BSP-635)

[katsusand]

Board

ESP32 DevModule

Hardware Description

MSP2807 SPI LCD with touch controller
(ILI9341, XPT2046)

IDE Name

VSCode

Operating System

Ubuntu24

Description

In the file components/lcd_touch/esp_lcd_touch/esp_lcd_touch.c, there appears to be an issue with the inversion of touch coordinates. The current implementation does not account for a necessary 1-pixel offset, which may lead to a misalignment of the touch input.

This adjustment should correctly align the touch coordinates with the display by subtracting the extra pixel.

Please review the proposed changes.

Sketch

Affected code:
- **Line 90:**
  - Current: `x[i] = tp->config.x_max - x[i];`
  - Proposed: `x[i] = tp->config.x_max - x[i] - 1;`

- **Line 95:**
  - Current: `y[i] = tp->config.y_max - y[i];`
  - Proposed: `y[i] = tp->config.y_max - y[i] - 1;`

Other Steps to Reproduce

No response

I have checked existing issues, README.md and ESP32 Forum

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.