randy/esphome-configs
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esphome-configs/mcu-lvgl-4848s040.yaml
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randy 1a2aec5d01 Document hardware, pinout and I2C devices in a header comment of every device 
Merge the old pinout comment blocks into the header and mark what each pin is used for.
2026-09-29 23:22:17 +02:00

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---
# Hardware: Guition ESP32-S3-4848S040
# Pinout:
# # Display (RGB, pins in the mipi_rgb model)
# CS 39
# SCK 48 ST7701S init (3-wire SPI)
# SDA 47
# DE 18
# HSYNC 16
# VSYNC 17
# PCLK 21
# BL 38
# # Capacitive Touch (GT911)
# TP_SDA 19
# TP_SCL 45
# # Relays (86 box variant)
# RELAY1 40
# RELAY2 2
# RELAY3 1
# Used:
# GPIO0 main_display (display mipi_rgb data_pins.red)
# GPIO3 main_display (display mipi_rgb data_pins.green)
# GPIO4 main_display (display mipi_rgb data_pins.blue)
# GPIO5 main_display (display mipi_rgb data_pins.blue)
# GPIO6 main_display (display mipi_rgb data_pins.blue)
# GPIO7 main_display (display mipi_rgb data_pins.blue)
# GPIO8 main_display (display mipi_rgb data_pins.green)
# GPIO9 main_display (display mipi_rgb data_pins.green)
# GPIO10 main_display (display mipi_rgb data_pins.green)
# GPIO11 main_display (display mipi_rgb data_pins.red)
# GPIO12 main_display (display mipi_rgb data_pins.red)
# GPIO13 main_display (display mipi_rgb data_pins.red)
# GPIO14 main_display (display mipi_rgb data_pins.red)
# GPIO15 main_display (display mipi_rgb data_pins.blue)
# GPIO16 main_display (display mipi_rgb hsync_pin)
# GPIO17 main_display (display mipi_rgb vsync_pin)
# GPIO18 main_display (display mipi_rgb de_pin)
# GPIO19 i2c_main (i2c sda)
# GPIO20 main_display (display mipi_rgb data_pins.green)
# GPIO21 main_display (display mipi_rgb pclk_pin)
# GPIO38 gpio_backlight_pwm (output ledc)
# GPIO39 main_display (display mipi_rgb cs_pin)
# GPIO45 i2c_main (i2c scl)
# GPIO46 main_display (display mipi_rgb data_pins.green)
# GPIO47 lcd_spi (spi mosi_pin)
# GPIO48 lcd_spi (spi clk_pin)
# I2C:
# 0x5D main_touch (touchscreen gt911)
substitutions:
device: lvgl-4848s040
name: LVGL 4848S040
area: DEV
comment: "${area} | Guition ESP32-S3-4848S040"
esphome:
name: mcu-${device}
friendly_name: ${name}
area: ${area}
comment: ${comment}
on_boot:
- priority: -100
then:
- lvgl.page.show: status_page
esp32:
variant: esp32s3
flash_size: 16MB
framework:
type: esp-idf
# PSRAM bandwidth for the RGB panel (not set by ESPHome); without it the
# image shifts during flash/WiFi activity
sdkconfig_options:
CONFIG_ESP32S3_DATA_CACHE_64KB: y
CONFIG_SPIRAM_FETCH_INSTRUCTIONS: y
CONFIG_SPIRAM_RODATA: y
psram:
mode: octal
speed: 80MHz
packages:
common: !include common/common.yaml
ipv6_only: !include common/ipv6_only.yaml
api:
# status page until Home Assistant connects (log viewers don't subscribe to states)
on_client_connected:
- delay: 2s
- if:
condition:
api.connected:
state_subscription_only: true
then:
- lvgl.page.show: main_page
on_client_disconnected:
- if:
condition:
not:
api.connected:
state_subscription_only: true
then:
- lvgl.page.show: status_page
i2c:
- id: i2c_main
sda: 19
scl: 45
scan: true
spi:
- id: lcd_spi
clk_pin: 48
mosi_pin: 47
display:
- platform: mipi_rgb
model: GUITION-4848S040
id: main_display
spi_id: lcd_spi
update_interval: never
auto_clear_enabled: false
touchscreen:
- platform: gt911
id: main_touch
display: main_display
i2c_id: i2c_main
# the mipi_rgb model mirrors the image on both axes, touch has to follow
transform:
mirror_x: true
mirror_y: true
output:
- platform: ledc
id: gpio_backlight_pwm
pin: 38
frequency: 1220
light:
- platform: monochromatic
id: back_light
name: Backlight
output: gpio_backlight_pwm
restore_mode: ALWAYS_ON
script:
- id: update_status
then:
- lambda: |-
// same colors as the other status screens: ok green, waiting orange, details gray
static const uint32_t OK = 0x4DD966, WAIT = 0xFFB300;
auto set = [](lv_obj_t *label, const std::string &text, uint32_t color) {
lv_label_set_text(label, text.c_str());
lv_obj_set_style_text_color(label, lv_color_hex(color), LV_PART_MAIN);
};
const bool wifi_ok = wifi::global_wifi_component->is_connected();
set(id(status_wifi),
wifi_ok ? str_sprintf("WiFi: connected (%d dBm)", wifi::global_wifi_component->wifi_rssi())
: std::string("WiFi: connecting..."),
wifi_ok ? OK : WAIT);
// IPv6 first (skip link-local), then IPv4
std::string ips;
if (wifi_ok) {
char buf[network::IP_ADDRESS_BUFFER_SIZE];
for (bool v6 : {true, false}) {
for (auto &ip : wifi::global_wifi_component->get_ip_addresses()) {
if (!ip.is_set() || ip.is_ip6() != v6)
continue;
ip.str_to(buf);
if (v6 && strncmp(buf, "fe80", 4) == 0)
continue;
if (!ips.empty())
ips += "\n";
ips += buf;
}
}
}
lv_label_set_text(id(status_ips), ips.c_str());
if (ips.empty())
lv_obj_add_flag(id(status_ips), LV_OBJ_FLAG_HIDDEN);
else
lv_obj_remove_flag(id(status_ips), LV_OBJ_FLAG_HIDDEN);
const bool api_ok = api::global_api_server->is_connected();
set(id(status_ha), api_ok ? "Home Assistant: connected" : "Home Assistant: waiting...",
api_ok ? OK : WAIT);
const uint32_t up = millis() / 1000;
lv_label_set_text(id(status_footer),
str_sprintf("ESPHome %s · up %ud %02u:%02u:%02u", ESPHOME_VERSION, up / 86400,
(up / 3600) % 24, (up / 60) % 60, up % 60).c_str());
interval:
- interval: 1s
then:
- lvgl.label.update:
id: clock_label
text: !lambda |-
auto now = id(ha_time).now();
if (!now.is_valid())
return std::string("--:--");
return now.strftime("%H:%M");
- if:
condition:
lvgl.page.is_showing: status_page
then:
- script.execute: update_status
image:
- platform: file
file: assets/images/made-for-esphome-white-on-black.svg
id: esphome_logo
resize: 320x95
type: RGB565
transparency: alpha_channel
font:
- file: "gfonts://Roboto@500"
id: font_clock
size: 150
glyphs: "0123456789:-"
- file: "gfonts://Roboto"
id: font_title
size: 32
- file: "gfonts://Roboto"
id: font_status
size: 20
glyphs: "·"
glyphsets: [GF_Latin_Kernel]
lvgl:
log_level: WARN
color_depth: 16
bg_color: 0x000000
text_color: 0xFFFFFF
theme:
buttonmatrix:
bg_opa: TRANSP
border_width: 0
items:
bg_color: 0x2B2F36
text_color: 0xFFFFFF
radius: 12
checked:
bg_color: 0xE08A00
top_layer:
widgets:
# same navigation bar as on mcu-lvgl-trainer
- buttonmatrix:
id: nav_bar
align: bottom_mid
width: 100%
height: 60
pad_all: 4
pad_column: 6
items:
text_font: montserrat_28
rows:
- buttons:
- id: page_prev
text: ""
on_press:
then:
lvgl.page.previous:
- id: page_home
text: ""
on_press:
then:
lvgl.page.show: main_page
- id: page_next
text: ""
on_press:
then:
lvgl.page.next:
pages:
# 1: clock
- id: main_page
widgets:
- label:
id: clock_label
align: CENTER
y: -30
text_font: font_clock
text: "--:--"
# 2: status (shown until Home Assistant connects)
- id: status_page
on_load:
- script.execute: update_status
widgets:
- image:
src: esphome_logo
align: TOP_MID
y: 16
- label:
align: TOP_MID
y: 120
text_font: font_title
text: "${name}"
- obj:
id: status_lines
x: 24
y: 170
width: 440
height: SIZE_CONTENT
bg_opa: TRANSP
border_width: 0
pad_all: 0
scrollbar_mode: "OFF"
layout:
type: flex
flex_flow: column
pad_row: 6
widgets:
- label:
id: status_wifi
text_font: font_status
text: ""
- label:
id: status_ips
text_font: font_status
text_color: 0x8C8C8C
pad_left: 20
text: ""
- label:
id: status_ha
text_font: font_status
text: ""
- label:
id: status_footer
text_font: font_status
text_color: 0x8C8C8C
text: ""
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