- Added GUITION ST7701 panel instructions.

[FigueiredoStable]

Just add a new device support for ST7701 manufactured by GUITION, link: GUITION Smart Display

* The board:

* Before the new instructions, colors were inverted or only rendered a partial size of the screen:

* After added instructions by manufacture

[tobozo]

both ::init() methods are identical; since LGFX has a desing pattern for display variants, let's create a Panel_ST7701_Base to handle the redundant ::init() and make both Panel_ST7701 and Panel_ST7701_guition_esp32_4848S040 inherit from it:

lgfx/v1/platforms/esp32s3/Panel_RGB.hpp

  struct Panel_ST7701_Base : public Panel_RGB
  {
    bool init(bool) override; 
  };

  struct Panel_ST7701 : public Panel_ST7701_Base
  {
  protected:
    const uint8_t* getInitCommands(uint8_t listno) const override;
  };

  struct Panel_ST7701_guition_esp32_4848S040: public Panel_ST7701_Base
  {
  protected:
    const uint8_t* getInitCommands(uint8_t listno) const override;
  };

lgfx/v1/platforms/esp32s3/Panel_RGB.cpp

• create Panel_ST7701_Base::init(bool)
• remove Panel_ST7701::init(bool)
• remove Panel_ST7701_guition_esp32_4848S040::init(bool)

[FigueiredoStable]

both ::init() methods are identical; since LGFX has a desing pattern for display variants, let's create a Panel_ST7701_Base to handle the redundant ::init() and make both Panel_ST7701 and Panel_ST7701_guition_esp32_4848S040 inherit from it:

lgfx/v1/platforms/esp32s3/Panel_RGB.hpp

  struct Panel_ST7701_Base : public Panel_RGB
  {
    bool init(bool) override; 
  };

  struct Panel_ST7701 : public Panel_ST7701_Base
  {
  protected:
    const uint8_t* getInitCommands(uint8_t listno) const override;
  };

  struct Panel_ST7701_guition_esp32_4848S040: public Panel_ST7701_Base
  {
  protected:
    const uint8_t* getInitCommands(uint8_t listno) const override;
  };

lgfx/v1/platforms/esp32s3/Panel_RGB.cpp

• create Panel_ST7701_Base::init(bool)
• remove Panel_ST7701::init(bool)
• remove Panel_ST7701_guition_esp32_4848S040::init(bool)

Great point, i added Panel ST7701 base initialization. Tks

[tobozo]

looks good, thanks for your contribution 👍

[Christian-Me]

@FigueiredoStable Thank you for your contribution. Happy to see that lgfx is working with this panel. Nevertheless I struggle to get it running myself. May I ask if it is possible to share your config file (PIN definitions etc.) to give me a kickstart. Here is my my hacked config. I get a picture but with distorted colors. I'm practicing trial and error for hours and can't get it right.

#define LGFX_USE_V1
#include <LovyanGFX.hpp>

#include <lgfx/v1/platforms/esp32s3/Panel_RGB.hpp>
#include <lgfx/v1/platforms/esp32s3/Bus_RGB.hpp>
#include <driver/i2c.h>

class LGFX : public lgfx::LGFX_Device
{
public:

  lgfx::Bus_RGB      _bus_instance;
  lgfx::Panel_ST7701_guition_esp32_4848S040 _panel_instance;
  lgfx::Touch_GT911  _touch_instance;
  lgfx::Light_PWM   _light_instance;

  LGFX(void)
  {
    {
      auto cfg = _panel_instance.config();

      cfg.memory_width  = 480;
      cfg.memory_height = 480;
      cfg.panel_width  = 480;
      cfg.panel_height = 480;

      cfg.offset_x = 0;
      cfg.offset_y = 0;

      _panel_instance.config(cfg);
    }

    {
      auto cfg = _panel_instance.config_detail();

      cfg.pin_cs = 39;
      cfg.pin_sclk = 48;
      cfg.pin_mosi = 47; // SDA

      _panel_instance.config_detail(cfg);
    }

    {
      auto cfg = _bus_instance.config();
      cfg.panel = &_panel_instance;
      cfg.pin_d0  = GPIO_NUM_4;  // B0
      cfg.pin_d1  = GPIO_NUM_5;  // B1
      cfg.pin_d2  = GPIO_NUM_6; // B2
      cfg.pin_d3  = GPIO_NUM_7; // B3
      cfg.pin_d4  = GPIO_NUM_15;  // B4
      cfg.pin_d5  = GPIO_NUM_8;  // G0
      cfg.pin_d6  = GPIO_NUM_20;  // G1
      cfg.pin_d7  = GPIO_NUM_3; // G2
      cfg.pin_d8  = GPIO_NUM_46; // G3
      cfg.pin_d9  = GPIO_NUM_9; // G4
      cfg.pin_d10 = GPIO_NUM_10;  // G5
      cfg.pin_d11 = GPIO_NUM_11; // R0
      cfg.pin_d12 = GPIO_NUM_12; // R1
      cfg.pin_d13 = GPIO_NUM_13; // R2
      cfg.pin_d14 = GPIO_NUM_14; // R3
      cfg.pin_d15 = GPIO_NUM_0; // R4

      cfg.pin_henable = GPIO_NUM_18;
      cfg.pin_vsync   = GPIO_NUM_17;
      cfg.pin_hsync   = GPIO_NUM_16;
      cfg.pin_pclk    = GPIO_NUM_21;
      cfg.freq_write  = 14000000;

      cfg.hsync_polarity    = 0;
      cfg.hsync_front_porch = 10;
      cfg.hsync_pulse_width = 8;
      cfg.hsync_back_porch  = 50;
      cfg.vsync_polarity    = 0;
      cfg.vsync_front_porch = 10;
      cfg.vsync_pulse_width = 8;
      cfg.vsync_back_porch  = 20;
      cfg.pclk_idle_high    = 0;
      cfg.de_idle_high      = 1;
      _bus_instance.config(cfg);
    }
    _panel_instance.setBus(&_bus_instance);

    {
      auto cfg = _light_instance.config();
      cfg.pin_bl = GPIO_NUM_38;
      _light_instance.config(cfg);
    }
    _panel_instance.light(&_light_instance);

    {
      auto cfg = _touch_instance.config();
      cfg.x_min      = 0;
      cfg.x_max      = 480;
      cfg.y_min      = 0;
      cfg.y_max      = 480;
      cfg.bus_shared = false;
      cfg.offset_rotation = 0;

      cfg.i2c_port   = I2C_NUM_1;

      cfg.pin_int    = GPIO_NUM_NC;
      cfg.pin_sda    = GPIO_NUM_19;
      cfg.pin_scl    = GPIO_NUM_45;
      cfg.pin_rst    = GPIO_NUM_NC;

      cfg.freq       = 400000;
      _touch_instance.config(cfg);
      _panel_instance.setTouch(&_touch_instance);
    }

    // {
    //   auto cfg = _light_instance.config();
    //   cfg.pin_bl = GPIO_NUM_44;
    //   _light_instance.config(cfg);
    // }
    // _panel_instance.light(&_light_instance);

    setPanel(&_panel_instance);
  }
};

Thank you for your help.

[FigueiredoStable]

@FigueiredoStable Thank you for your contribution. Happy to see that lgfx is working with this panel. Nevertheless I struggle to get it running myself. May I ask if it is possible to share your config file (PIN definitions etc.) to give me a kickstart. Here is my my hacked config. I get a picture but with distorted colors. I'm practicing trial and error for hours and can't get it right.

Hy Christian, sure, i can help you i will put here my configuration as soon as a possible ok

[Christian-Me]

Thank you very much. Any help is appreciated.

[FigueiredoStable]

Thank you very much. Any help is appreciated.

Hi i'am back, i used your instruction in my test code and works very well, so if you use with LVGL i publishied on this repository below:

LovyanGFX-GUITION-ESP32-4848S040

• In lv_conf set #define LV_COLOR_16_SWAP 1 because this work with SPI protocol. (prevent color reversed or distorced).

• my_disp_flush use DMA to better performance.

I hope the repository help you, otherwise i'am here.

[Christian-Me]

@FigueiredoStable Many, many thanx! That does the trick. You made my day.

[FigueiredoStable]

@FigueiredoStable Many, many thanx! That does the trick. You made my day.

Glad that helped you Cristian, made my day too!