Vigie on the Waveshare ESP32-P4 7B

# Waveshare ESP32-P4-WIFI6-Touch-LCD-7B with ESPHome, without Home Assistant: display, touch,
# Wi-Fi and backlight, and the screen reads a web API by itself to show the temperature and the
# weather warning of a place (the /v1/point route of the public Vigie API). Pins and settings of
# the Vigie display firmware, which runs on the board; this example itself is compiled with
# ESPHome 2026.9.1 but not tried as is.
substitutions:
  # The place shown (Paris here).
  latitude: "48.86"
  longitude: "2.35"

esphome:
  name: waveshare-7b-standalone
  friendly_name: Waveshare 7B standalone
  # ESPHome 2026.9.0 crashes while setting up the display of an ESP32-P4 revision 3: 2026.9.1 at
  # least.
  min_version: 2026.9.1

esp32:
  variant: esp32p4
  # ESP32-P4 revision 3 (production silicon), whose normal frequency is 400 MHz.
  engineering_sample: false
  cpu_frequency: 400MHz
  flash_size: 32MB
  framework:
    type: esp-idf
    advanced:
      enable_idf_experimental_features: true
      execute_from_psram: true

# At its default speed, the PSRAM gave about thirty "lcd.dsi underrun" per second.
psram:
  mode: hex
  speed: 200MHz

# Wi-Fi is on a second chip, an ESP32-C6, linked over SDIO. Its reset (GPIO54) is active high:
# false gives "sdmmc_card_init failed".
esp32_hosted:
  variant: esp32c6
  active_high: true
  clk_pin: GPIO18
  cmd_pin: GPIO19
  d0_pin: GPIO14
  d1_pin: GPIO15
  d2_pin: GPIO16
  d3_pin: GPIO17
  reset_pin: GPIO54
  slot: 1
  sdio_frequency: 20MHz
  use_psram: true

# No "api:": nothing links the screen to Home Assistant. No password in the file: Wi-Fi is given
# after the install, over USB (Improv, from ESPHome Web) or through the "Waveshare 7B setup"
# access point and its settings page.
wifi:
  ap:
    ssid: "Waveshare 7B setup"

improv_serial:

captive_portal:

ota:
  - platform: esphome

logger:
  hardware_uart: USB_SERIAL_JTAG

# Bus of the GT911 touch and of the audio chips.
i2c:
  - id: bsp_bus
    sda: GPIO7
    scl: GPIO8
    frequency: 400kHz

# Supply of the display's MIPI-DSI link: LDO 3 at 2.5 V.
esp_ldo:
  - voltage: 2.5V
    channel: 3

# EK79007 panel: ESPHome's model knows the board (GPIO33 reset included).
display:
  - id: panel
    platform: mipi_dsi
    model: WAVESHARE-ESP32-P4-WIFI6-TOUCH-LCD-7B
    dimensions:
      width: 1024
      height: 600
    pixel_mode: 16bit
    color_order: RGB
    update_interval: never
    auto_clear_enabled: false

# Waveshare's code says the GT911 reset is not connected, but it is on GPIO23: without it and
# without both mirrors, one touch recognised in five minutes.
touchscreen:
  - id: touch
    platform: gt911
    reset_pin: GPIO23
    update_interval: 50ms
    transform:
      swap_xy: false
      mirror_x: true
      mirror_y: true

# Backlight: inverted output, at 5 kHz.
output:
  - platform: ledc
    id: backlight_pwm
    pin:
      number: GPIO32
      inverted: true
    frequency: 5000Hz

light:
  - platform: monochromatic
    id: backlight
    name: "Backlight"
    output: backlight_pwm
    restore_mode: RESTORE_DEFAULT_ON

# The screen fetches its data by itself, over HTTPS. verify_ssl: false: the server certificate
# is not checked, as in Vigie display; fine for public data, never for a password.
http_request:
  id: web
  timeout: 8s
  verify_ssl: false

interval:
  # /v1/point takes 10 requests per minute and per address: one every 5 minutes is plenty.
  - interval: 5min
    startup_delay: 10s
    then:
      - if:
          condition:
            wifi.connected:
          then:
            - http_request.get:
                url: "https://vigie.auxfilsdesidees.fr/v1/point?lat=${latitude}&lon=${longitude}"
                capture_response: true
                max_response_buffer_size: 16384
                on_response:
                  then:
                    - lambda: |-
                        if (response->status_code != 200) {
                          ESP_LOGW("exemple", "HTTP %d", response->status_code);
                          return;
                        }
                        json::parse_json(body, [](JsonObject root) -> bool {
                          // Highest weather warning at the point: GREEN, YELLOW, ORANGE or RED.
                          std::string level = root["local_alert_level"] | "";
                          const char *text = "No warning";
                          uint32_t colour = 0x3FA34D;
                          if (level == "YELLOW") { text = "Yellow warning"; colour = 0xF2C230; }
                          if (level == "ORANGE") { text = "Orange warning"; colour = 0xF08A24; }
                          if (level == "RED") { text = "Red warning"; colour = 0xE5484D; }
                          lv_label_set_text(id(level_label), text);
                          lv_obj_set_style_text_color(id(level_label), lv_color_hex(colour), LV_PART_MAIN);
                          // A missing value stays missing: nothing is made up.
                          JsonVariant temperature = root["current"]["temp_c"];
                          if (temperature.is<float>()) {
                            char value[16];
                            snprintf(value, sizeof(value), "%.1f °C", temperature.as<float>());
                            lv_label_set_text(id(temperature_label), value);
                          }
                          return true;
                        });
                on_error:
                  then:
                    - logger.log: "No answer (network or timeout)"

# LVGL's built-in fonts have no accented letters: Roboto, downloaded at build time (it only
# lacks combining accents, hence ignore_missing_glyphs).
font:
  - file: "gfonts://Roboto"
    id: font_text
    size: 28
    glyphsets: [GF_Latin_Core]
    ignore_missing_glyphs: true
  - file: "gfonts://Roboto@700"
    id: font_big
    size: 64
    glyphsets: [GF_Latin_Core]
    ignore_missing_glyphs: true

lvgl:
  displays: [panel]
  touchscreens: [touch]
  # The panel is mounted upside down compared with its driver: 180 for the board the right way
  # up, 0 if you mount it upside down. The touch follows by itself.
  rotation: 180
  color_depth: 16
  byte_order: little_endian
  buffer_size: 100%
  default_font: font_text
  pages:
    - id: home_page
      widgets:
        - label:
            id: temperature_label
            align: CENTER
            y: -50
            text: "--"
            text_font: font_big
        - label:
            id: level_label
            align: CENTER
            y: 70
            text: "Waiting for data"