Mouse not working on frame buffer sample project

embeddedt · December 16, 2020, 8:55pm

Take a look at these:

lvgl/lv_port_linux/blob/6232acdcc394878dd9155fd12a622b20358da7bc/lv_drv_conf.h#L328


      
          #endif  /*USE_LIBINPUT*/
          
          /*-------------------------------------------------
           * Mouse or touchpad as evdev interface (for Linux based systems)
           *------------------------------------------------*/
          #ifndef USE_EVDEV
          #  define USE_EVDEV           0
          #endif
          
          #if USE_EVDEV
          #  define EVDEV_NAME   "/dev/input/event0"        /*You can use the "evtest" Linux tool to get the list of devices and test them*/
          #  define EVDEV_SWAP_AXES         0               /*Swap the x and y axes of the touchscreen*/
          
          #  define EVDEV_SCALE             0               /* Scale input, e.g. if touchscreen resolution does not match display resolution */
          #  if EVDEV_SCALE
          #    define EVDEV_SCALE_HOR_RES     (4096)          /* Horizontal resolution of touchscreen */
          #    define EVDEV_SCALE_VER_RES     (4096)          /* Vertical resolution of touchscreen */
          #  endif  /*EVDEV_SCALE*/
          
          #  define EVDEV_CALIBRATE         0               /*Scale and offset the touchscreen coordinates by using maximum and minimum values for each axis*/
          #  if EVDEV_CALIBRATE

You can use evtest /dev/input/<device> to find which device has which ID.