I want to make a simple code where the screen goes to red, green and blue in a loop to practice.But I don't find how to make it work.
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static void test_draw_color_pattern (esp_lcd_panel_handle_t * panel_handle, uint16_t h_res, uint16_t v_res)
{
uint16_t *color = (uint16_t *) heap_caps_calloc (1, h_res * v_res, MALLOC_CAP_DMA);
if (color == NULL)
{
ESP_LOGE(TAG, "Color not initialized");
return;
}
ESP_LOGI(TAG, "Vamos a entrar en el bucle");
while (true)
{
// Draw Red
memset (color, RED, h_res * v_res); // Fill with red
esp_lcd_panel_draw_bitmap (panel_handle, 10, 0, h_res + 10, v_res, color);
xSemaphoreTake (refresh_finish, portMAX_DELAY);
memset (color, GREEN, h_res * v_res); // Fill with green
esp_lcd_panel_draw_bitmap (panel_handle, 10, 0, h_res + 10, v_res, color);
xSemaphoreTake (refresh_finish, portMAX_DELAY);
memset (color, BLUE, h_res * v_res); // Fill with blue
esp_lcd_panel_draw_bitmap (panel_handle, 10, 0, h_res + 10, v_res, color);
xSemaphoreTake (refresh_finish, portMAX_DELAY);
vTaskDelay(1);
}
free(color);
}
And this is my code to initialize the EK79007. (I am using the GPIOs used in the examples, 26 for the PWM and the 27 for the RST_LCD.
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void ek79007_initialize(gpio_num_t reset_pin) {
// Encender la fuente de alimentación de MIPI DSI PHY
esp_ldo_channel_handle_t ldo_mipi_phy = NULL;
esp_ldo_channel_config_t ldo_mipi_phy_config = {
.chan_id = 3,
.voltage_mv = 2500,
};
ESP_ERROR_CHECK(esp_ldo_acquire_channel(&ldo_mipi_phy_config, &ldo_mipi_phy));
ESP_LOGI(TAG, "MIPI DSI PHY Powered on");
// Crear el bus MIPI DSI
esp_lcd_dsi_bus_handle_t mipi_dsi_bus;
esp_lcd_dsi_bus_config_t bus_config = {
.bus_id = 0,
.num_data_lanes = PANEL_MIPI_DSI_LANE_NUM,
.phy_clk_src = MIPI_DSI_PHY_CLK_SRC_DEFAULT,
.lane_bit_rate_mbps = PANEL_MIPI_DSI_LANE_BITRATE_MBPS,
};
ESP_ERROR_CHECK(esp_lcd_new_dsi_bus(&bus_config, &mipi_dsi_bus));
// Configurar y crear el IO de control del panel
esp_lcd_panel_io_handle_t mipi_dbi_io;
esp_lcd_dbi_io_config_t dbi_config = {
.virtual_channel = 0,
.lcd_cmd_bits = 8, // according to the LCD spec
.lcd_param_bits = 8, // according to the LCD spec
};
ESP_ERROR_CHECK(esp_lcd_new_panel_io_dbi(mipi_dsi_bus, &dbi_config, &mipi_dbi_io));
// Configurar y crear el panel MIPI DSI
esp_lcd_dpi_panel_config_t dpi_config = {
.virtual_channel = 0,
.dpi_clk_src = MIPI_DSI_DPI_CLK_SRC_DEFAULT,
.dpi_clock_freq_mhz = PANEL_MIPI_DSI_DPI_CLK_MHZ,
.pixel_format = LCD_COLOR_PIXEL_FORMAT_RGB888,
.video_timing = {
.h_size = PANEL_MIPI_DSI_LCD_H_RES,
.v_size = PANEL_MIPI_DSI_LCD_V_RES,
.hsync_back_porch = PANEL_MIPI_DSI_LCD_HBP,
.hsync_pulse_width = PANEL_MIPI_DSI_LCD_HSYNC,
.hsync_front_porch = PANEL_MIPI_DSI_LCD_HFP,
.vsync_back_porch = PANEL_MIPI_DSI_LCD_VBP,
.vsync_pulse_width = PANEL_MIPI_DSI_LCD_VSYNC,
.vsync_front_porch = PANEL_MIPI_DSI_LCD_VFP,
},
.flags.use_dma2d = true,
};
ek79007_vendor_config_t vendor_config = {
.mipi_config = {
.dsi_bus = mipi_dsi_bus,
.dpi_config = &dpi_config,
},
};
esp_lcd_panel_dev_config_t lcd_dev_config = {
.reset_gpio_num = reset_pin,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
.bits_per_pixel = 24,
.vendor_config = &vendor_config,
};
ESP_ERROR_CHECK(esp_lcd_new_panel_ek79007(mipi_dbi_io, &lcd_dev_config, &mipi_dpi_panel));
// Resetear e inicializar el panel
ESP_ERROR_CHECK(esp_lcd_panel_reset(mipi_dpi_panel));
ESP_ERROR_CHECK(esp_lcd_panel_init(mipi_dpi_panel));
// Activar la retroiluminación y encender la pantalla
ek79007_backlight_on(mipi_dbi_io);
// ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(mipi_dpi_panel, true));
// Registrar el evento de actualización del panel
// refresh_finish = xSemaphoreCreateBinary();
// if (refresh_finish == NULL) {
// ESP_LOGE(TAG, "Failed to create semaphore for refresh");
// return;
// }
// esp_lcd_dpi_panel_event_callbacks_t cbs = {
// .on_color_trans_done = test_notify_refresh_ready,
// };
// ESP_ERROR_CHECK(esp_lcd_dpi_panel_register_event_callbacks(mipi_dpi_panel, &cbs, refresh_finish));
}
I have also built the test_app from the dependency https://components.espressif.com/components/espressif/esp_lcd_ek79007
Not even that works.
The only thing that has worked are the examples of the esp-dev-kits.
I am really blocked.
PS: I also tried to make this code for only setting a pixel color to try and hasn't worked either:
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esp_err_t panel_ek79007_set_pixel (esp_lcd_panel_t *panel, uint16_t x, uint16_t y, uint16_t color)
{
ek79007_panel_t *ek79007 = (ek79007_panel_t *) panel->user_data;
esp_lcd_panel_io_handle_t io = ek79007->io;
// Set the column address
uint8_t col_data [] = { (x >> 8) & 0xFF, x & 0xFF, ((x + 1) >> 8) & 0xFF, (x + 1) & 0xFF};
ESP_RETURN_ON_ERROR ( esp_lcd_panel_io_tx_param(io, LCD_CMD_CASET, col_data, sizeof(col_data)), TAG, "send command failed");
uint8_t row_data [] = { (y >> 8) & 0xFF, y & 0xFF, ((y + 1) >> 8) & 0xFF, (y + 1) & 0xFF};
ESP_RETURN_ON_ERROR ( esp_lcd_panel_io_tx_param(io, LCD_CMD_RASET, row_data, sizeof(row_data)), TAG, "send command failed");
// Write the pixel color
uint8_t color_data[] = { (color >> 8) & 0xFF, color & 0xFF};
ESP_RETURN_ON_ERROR ( esp_lcd_panel_io_tx_param(io, LCD_CMD_RAMWR, color_data, sizeof(color_data)), TAG, "send command failed");
return ESP_OK;
}