LovyanGFX Settings for 7" Display
I've recently bought a few Elecrow ESP32 Displays. I've been getting them to work with various Arduino graphics libraries and have found several working configurations.
I was unable to get the 7" screen to work properly with recent versions of Arduino_GFX, but this configuration works for me with the 7" display using the latest LovyanGFX library:
class LGFX : public lgfx::LGFX_Device { public: lgfx::Bus_RGB _bus_instance; lgfx::Panel_RGB _panel_instance; lgfx::Light_PWM _light_instance; lgfx::Touch_GT911 _touch_instance; LGFX(void) { { auto cfg = _panel_instance.config(); cfg.memory_width = 800; cfg.memory_height = 480; cfg.panel_width = 800; cfg.panel_height = 480; cfg.offset_x = 0; cfg.offset_y = 0; _panel_instance.config(cfg); } { auto cfg = _bus_instance.config(); cfg.panel = &_panel_instance; cfg.pin_d0 = GPIO_NUM_15; // B0 cfg.pin_d1 = GPIO_NUM_7; // B1 cfg.pin_d2 = GPIO_NUM_6; // B2 cfg.pin_d3 = GPIO_NUM_5; // B3 cfg.pin_d4 = GPIO_NUM_4; // B4 cfg.pin_d5 = GPIO_NUM_9; // G0 cfg.pin_d6 = GPIO_NUM_46; // G1 cfg.pin_d7 = GPIO_NUM_3; // G2 cfg.pin_d8 = GPIO_NUM_8; // G3 cfg.pin_d9 = GPIO_NUM_16; // G4 cfg.pin_d10 = GPIO_NUM_1; // G5 cfg.pin_d11 = GPIO_NUM_14; // R0 cfg.pin_d12 = GPIO_NUM_21; // R1 cfg.pin_d13 = GPIO_NUM_47; // R2 cfg.pin_d14 = GPIO_NUM_48; // R3 cfg.pin_d15 = GPIO_NUM_45; // R4 cfg.pin_henable = GPIO_NUM_41; cfg.pin_vsync = GPIO_NUM_40; cfg.pin_hsync = GPIO_NUM_39; cfg.pin_pclk = GPIO_NUM_0; cfg.freq_write = 12000000; cfg.hsync_polarity = 0; cfg.hsync_front_porch = 40; cfg.hsync_pulse_width = 48; cfg.hsync_back_porch = 40; cfg.vsync_polarity = 0; cfg.vsync_front_porch = 1; cfg.vsync_pulse_width = 31; cfg.vsync_back_porch = 13; cfg.pclk_active_neg = 1; cfg.de_idle_high = 0; cfg.pclk_idle_high = 0; _bus_instance.config(cfg); } _panel_instance.setBus(&_bus_instance); { auto cfg = _light_instance.config(); cfg.pin_bl = GPIO_NUM_2; _light_instance.config(cfg); } _panel_instance.light(&_light_instance); { auto cfg = _touch_instance.config(); cfg.x_min = 0; cfg.x_max = 799; cfg.y_min = 0; cfg.y_max = 479; cfg.pin_int = -1; cfg.pin_rst = -1; cfg.bus_shared = false; cfg.offset_rotation = 0; cfg.i2c_port = I2C_NUM_1; cfg.pin_sda = GPIO_NUM_19; cfg.pin_scl = GPIO_NUM_20; cfg.freq = 400000; cfg.i2c_addr = 0x14; _touch_instance.config(cfg); _panel_instance.setTouch(&_touch_instance); } setPanel(&_panel_instance); } };
Comments
Hi,
I have tried many combinations, and could not make only one example working with displays.
lvgl factory example for 7" : sha256 failed comparison.
GfX library for arduino : Hello example : black screen
LovyanGFX : black screen
U8g2 : which screen to select ?
Could you give a working example, with the version used (ide arduino, ESP32 espressif...) ?
Thanks for sharing your experience.
Cordially
Hi, please try the v2.0.3 of esp32 package.