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feat(lcd): add MIPI-to-HDMI example (lt9611)

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This commit is contained in:
Chen Jichang
2026-09-16 14:21:25 +08:00
parent 71474016ec
commit 345d707b21
20 changed files with 637 additions and 32 deletions
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components/esp_lcd/dsi/esp_lcd_panel_dpi.c
+16 -10
View File
@@ -187,6 +187,7 @@ esp_err_t esp_lcd_new_panel_dpi(esp_lcd_dsi_bus_handle_t bus, const esp_lcd_dpi_
ESP_RETURN_ON_FALSE(bus && panel_config && ret_panel, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
ESP_RETURN_ON_FALSE(panel_config->virtual_channel < 4, ESP_ERR_INVALID_ARG, TAG, "invalid virtual channel %d", panel_config->virtual_channel);
ESP_RETURN_ON_FALSE(panel_config->dpi_clock_freq_mhz > 0, ESP_ERR_INVALID_ARG, TAG, "invalid DPI clock frequency %.2f", panel_config->dpi_clock_freq_mhz);
ESP_RETURN_ON_FALSE(panel_config->video_burst_type < MIPI_DSI_VIDEO_BURST_TYPE_MAX, ESP_ERR_INVALID_ARG, TAG, "invalid DPI video burst type");
size_t num_fbs = panel_config->num_fbs;
// if the user doesn't specify the number of frame buffers, then fallback to use one frame buffer
@@ -298,27 +299,32 @@ esp_err_t esp_lcd_new_panel_dpi(esp_lcd_dsi_bus_handle_t bus, const esp_lcd_dpi_
// commands are transmitted in low-power mode
mipi_dsi_host_ll_dpi_enable_lp_command(hal->host, true);
}
// after sending a frame, the DSI device should return an ack
mipi_dsi_host_ll_dpi_enable_frame_ack(hal->host, true);
// using the burst mode because it's energy-efficient
mipi_dsi_host_ll_dpi_set_video_burst_type(hal->host, MIPI_DSI_LL_VIDEO_BURST_WITH_SYNC_PULSES);
// configure the size of the active lin period, measured in pixels
// Some bridge devices don't return a frame acknowledgement.
mipi_dsi_host_ll_dpi_enable_frame_ack(hal->host, !panel_config->flags.disable_frame_ack);
mipi_dsi_host_ll_dpi_set_video_burst_type(hal->host, panel_config->video_burst_type);
// configure the size of the active line period, measured in pixels
mipi_dsi_host_ll_dpi_set_video_packet_pixel_num(hal->host, panel_config->video_timing.h_size);
// disable multi-packets
mipi_dsi_host_ll_dpi_set_trunks_num(hal->host, 0);
// disable "null packets"
mipi_dsi_host_ll_dpi_set_null_packet_size(hal->host, 0);
// set horizontal and vertical timing configuration
mipi_dsi_hal_host_dpi_set_horizontal_timing(hal, panel_config->video_timing.hsync_pulse_width,
panel_config->video_timing.hsync_back_porch,
panel_config->video_timing.h_size,
panel_config->video_timing.hsync_front_porch);
ESP_GOTO_ON_FALSE(mipi_dsi_hal_host_dpi_set_horizontal_timing(hal, panel_config->video_timing.hsync_pulse_width,
panel_config->video_timing.hsync_back_porch,
panel_config->video_timing.h_size,
panel_config->video_timing.hsync_front_porch),
ESP_ERR_INVALID_ARG, err, TAG, "invalid compensated horizontal timing");
mipi_dsi_hal_host_dpi_set_vertical_timing(hal, panel_config->video_timing.vsync_pulse_width,
panel_config->video_timing.vsync_back_porch,
panel_config->video_timing.v_size,
panel_config->video_timing.vsync_front_porch);
mipi_dsi_brg_ll_set_num_pixel_bits(hal->bridge, panel_config->video_timing.h_size * panel_config->video_timing.v_size * bits_per_pixel);
mipi_dsi_brg_ll_set_underrun_discard_count(hal->bridge, panel_config->video_timing.h_size);
// Report underruns for the whole frame: IRQ when underrun occurs and line_cnt < vtotal.
mipi_dsi_brg_ll_set_underrun_discard_count(hal->bridge,
panel_config->video_timing.vsync_pulse_width +
panel_config->video_timing.vsync_back_porch +
panel_config->video_timing.v_size +
panel_config->video_timing.vsync_front_porch);
// set the in/out color formats in the DSI bridge
mipi_dsi_brg_ll_set_input_color_format(hal->bridge, in_color_format);
mipi_dsi_brg_ll_set_output_color_format(hal->bridge, out_color_format, 0);
components/esp_lcd/dsi/include/esp_lcd_mipi_dsi.h
+3 -1
View File
@@ -94,10 +94,12 @@ typedef struct {
which is the format that the panel can accept */
uint8_t num_fbs; /*!< Number of screen-sized frame buffers that allocated by the driver
By default (set to either 0 or 1) only one frame buffer will be created */
mipi_dsi_video_burst_type_t video_burst_type; /*!< DPI video burst type */
esp_lcd_video_timing_t video_timing; /*!< Video timing */
/// Extra configuration flags for MIPI DSI DPI panel
struct extra_dpi_panel_flags {
uint32_t disable_lp: 1;/*!< Disable low-power for DPI */
uint32_t disable_lp: 1; /*!< Disable low-power for DPI */
uint32_t disable_frame_ack: 1; /*!< Disable the frame acknowledgement request */
} flags; /*!< Extra configuration flags */
} esp_lcd_dpi_panel_config_t;