Cannot Make Bus_RGB Work

[Basitadam]

Hello all,

I am fairly new to LovyanGFX. However, managed to run couple of displays running in SPI and 8/16 bit Parallel modes.

Now I am trying to use Bus_RGB mode on a Waveshare 5inch display. Display works fine with its original firmware. When I try the setup below, I can only make HSYNC, VSYNC and PCLOCK signals work. Frequencies, shapes and polarities of these three signals seems to be OK. But no activity on DE or RGB lines. I get blank screen (Yes, the backlight is ON).

#include <LovyanGFX.hpp>
#include <lgfx/v1/platforms/esp32s3/Panel_RGB.hpp>
#include <lgfx/v1/platforms/esp32s3/Bus_RGB.hpp>
#include "esp_log.h"

class LGFX : public lgfx::LGFX_Device
{
  public:

  lgfx::Panel_RGB    _panel_instance;
  lgfx::Bus_RGB      _bus_instance;
  lgfx::Light_PWM    _light_instance;


  LGFX(void)
  {
      auto cfg = _bus_instance.config();    
        {
          auto cfg = _panel_instance.config();
          cfg.memory_width  = 1024;
          cfg.memory_height = 600;
          cfg.panel_width   = 1024;
          cfg.panel_height  = 600;
          cfg.offset_x      = 0;
          cfg.offset_y      = 0;
          _panel_instance.config(cfg);
        }

        {
          auto cfg = _panel_instance.config_detail();

          cfg.use_psram = 1;

          _panel_instance.config_detail(cfg);
        }

        {
          auto cfg = _bus_instance.config();
          cfg.panel = &_panel_instance;

          cfg.pin_d0  = GPIO_NUM_14;  // B0
          cfg.pin_d1  = GPIO_NUM_38;  // B1
          cfg.pin_d2  = GPIO_NUM_18;  // B2
          cfg.pin_d3  = GPIO_NUM_17;  // B3
          cfg.pin_d4  = GPIO_NUM_10;  // B4

          cfg.pin_d5  = GPIO_NUM_39;  // G0
          cfg.pin_d6  = GPIO_NUM_0;   // G1
          cfg.pin_d7  = GPIO_NUM_45;  // G2
          cfg.pin_d8  = GPIO_NUM_48;  // G3
          cfg.pin_d9  = GPIO_NUM_47;  // G4
          cfg.pin_d10 = GPIO_NUM_21;  // G5

          cfg.pin_d11 = GPIO_NUM_1;  // R0
          cfg.pin_d12 = GPIO_NUM_2;  // R1
          cfg.pin_d13 = GPIO_NUM_42; // R2
          cfg.pin_d14 = GPIO_NUM_41; // R3
          cfg.pin_d15 = GPIO_NUM_40; // R4

          cfg.pin_henable = GPIO_NUM_5;
          cfg.pin_vsync   = GPIO_NUM_3;
          cfg.pin_hsync   = GPIO_NUM_46;
          cfg.pin_pclk    = GPIO_NUM_7;
          cfg.freq_write  = 21000000;

          cfg.hsync_polarity    = 1;
          cfg.hsync_front_porch = 170;
          cfg.hsync_pulse_width = 30;
          cfg.hsync_back_porch  = 145;

          cfg.vsync_polarity    = 1;
          cfg.vsync_front_porch = 12;
          cfg.vsync_pulse_width = 4;
          cfg.vsync_back_porch  = 16;

          cfg.pclk_active_neg = 1;
          cfg.de_idle_high    = 0;
          cfg.pclk_idle_high  = 0;

          _bus_instance.config(cfg);  
        }
      _panel_instance.setBus(&_bus_instance);      
    setPanel(&_panel_instance); 
  }
};
 
LGFX display;

Any ideas where I am going wrong?
Thanks,
Tim