Error: error: 'Panel_GC9A01A' in namespace 'lgfx' does not name a type lgfx::Panel_GC9A01A _panel_instance;

[oyasai-edu]

I have Error that is "error: 'Panel_GC9A01A' in namespace 'lgfx' does not name a type
lgfx::Panel_GC9A01A _panel_instance;".

Could you give me some hints on what I should check and what I should do?

The source code is as follows.

---

#include <LovyanGFX.hpp>

// Seeed Studio XIAO用の設定
class LGFX : public lgfx::LGFX_Device {
  lgfx::Panel_GC9A01A _panel_instance;
  lgfx::Bus_SPI _bus_instance;
public:
  LGFX(void) {
    {
      auto cfg = _bus_instance.config();

      cfg.spi_host = SPI2_HOST; // XIAOではSPI2_HOSTを使用
      cfg.spi_mode = 0;
      cfg.freq_write = 40000000;
      cfg.freq_read = 16000000;
      cfg.spi_3wire = false;
      cfg.use_lock = true;
      cfg.dma_channel = 1;
      cfg.pin_sclk = 13;  // SCLKピン
      cfg.pin_mosi = 11;  // MOSIピン
      cfg.pin_miso = -1;  // MISOは使用しない場合は-1
      cfg.pin_dc = 10;    // DCピン
      _bus_instance.config(cfg);
      _panel_instance.setBus(&_bus_instance);
    }
    {
      auto cfg = _panel_instance.config();
      cfg.pin_cs = 9;     // CSピン
      cfg.pin_rst = 8;    // RSTピン
      cfg.pin_busy = -1;  // BUSYは使用しない場合は-1
      _panel_instance.config(cfg);
    }
    setPanel(&_panel_instance);
  }
};

LGFX lcd;

void setup() {
  lcd.init();
  lcd.setTextColor(LCD_WHITE);
  lcd.setFontSize(2);
  lcd.clear();
  lcd.drawString("こんにちは、世界！", 10, 10);
}

void loop() {
  // ループ内処理
}

[tobozo]

hi,

the error message is because Panel_GC9A01A is not in the list of supported panels.

if none of the supported panels drivers work, you will probably have to write your own panel driver, this pull request is a good contribution example for a new panel.

[oyasai-edu]

Thank you for the information. but. The file exists. Even if I import this directly, the same error occurs. Why...

[tobozo]

The file exists.

where does it exist? I don't see it in LovyanGFX source tree, and I cannot guess what is in that file.

if you have a file where class Panel_GC9A01A is declared, please share it

[oyasai-edu]

Thank you for your reply. The file can be found here.
https://github.com/lovyan03/LovyanGFX/blob/master/src/lgfx/v1/panel/Panel_GC9A01.hpp

[tobozo]

thanks,

the name of the class is Panel_GC9A01, not Panel_GC9A01A

if you edit your configuration code the error should go away:

  lgfx::Panel_GC9A01 _panel_instance;

[oyasai-edu]

Wow, did I make that mistake? Thank you for noticing.