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Implemented rough 1st iteration of dc-load value screen.

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This commit is contained in:
Marcus Scholz
2026-05-28 22:09:54 +02:00
parent f9b32d06a4
commit 22e5f9d767
2 changed files with 167 additions and 66 deletions
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esphome/lab-ble-proxy-owon.h
+76 -2
View File
@@ -1,5 +1,5 @@
/*
* ESPHome helper for OWON B35T/B35T+ BLE meter on M5Stack Core 1.
* ESPHome helper for OWON B35T/B35T+ BLE meter on M5Stack Core 2.
* Parser is based on the standalone Arduino sketch by Reaper7
* (Beerware license, Revision 42) and Dean Cording's owonb35 notes.
*/
@@ -361,7 +361,11 @@ class Meter {
if (this->selected_button < 6) this->selected_button++;
}
void render(Display &it, esphome::display::BaseFont *font) {
void render(esphome::display::Display &it, esphome::display::BaseFont *font,
int display_page = 0, bool atorch_running = false,
float atorch_voltage = NAN, float atorch_current = NAN, float atorch_power = NAN,
float atorch_capacity = NAN, float atorch_energy = NAN, float atorch_temperature = NAN,
const char *atorch_runtime = "--:--:--") {
const Color bg(0, 0, 0);
const Color fg(210, 210, 210);
// Chosen to map to a neutral dark gray in the RGB332 8-bit display palette.
@@ -374,6 +378,8 @@ class Meter {
const Color green(0, 220, 0);
const Color orange(255, 165, 0);
if (display_page == 0) {
// --- PAGE 1: OWON Multimeter ---
it.fill(bg);
bool status_active = this->connected && this->has_reading;
this->draw_icon_(it, 12, 8, 16, 16, ACCU_BMP, status_active ? (this->low_battery ? red : green) : inactive);
@@ -422,6 +428,48 @@ class Meter {
it.print(54, 216, font, bg, esphome::display::TextAlign::TOP_CENTER, "<");
it.print(158, 216, font, bg, esphome::display::TextAlign::TOP_CENTER, this->selected_button_name());
it.print(262, 216, font, bg, esphome::display::TextAlign::TOP_CENTER, ">");
} else {
// --- PAGE 2: Atorch DL24 DC load ---
it.fill(bg);
const Color panel(18, 24, 32);
const Color panel_dim(10, 14, 20);
const Color border(55, 70, 86);
const Color white(245, 245, 245);
char voltage_text[24];
char current_text[24];
char power_text[24];
char capacity_text[24];
char energy_text[24];
char temperature_text[24];
this->format_metric_(voltage_text, sizeof(voltage_text), atorch_voltage, "V", 2);
this->format_metric_(current_text, sizeof(current_text), atorch_current, "A", 3);
this->format_metric_(power_text, sizeof(power_text), atorch_power, "W", 2);
this->format_metric_(capacity_text, sizeof(capacity_text), atorch_capacity, "Ah", 3);
this->format_metric_(energy_text, sizeof(energy_text), atorch_energy, "Wh", 3);
this->format_metric_(temperature_text, sizeof(temperature_text), atorch_temperature, "°C", 1);
it.filled_rectangle(0, 0, 320, 30, panel_dim);
it.print(10, 7, font, cyan, esphome::display::TextAlign::TOP_LEFT, "ATORCH DL24");
it.filled_rectangle(230, 6, 80, 18, atorch_running ? green : inactive);
it.print(270, 8, font, bg, esphome::display::TextAlign::TOP_CENTER, atorch_running ? "RUNNING" : "STOPPED");
this->draw_metric_card_(it, font, 10, 42, 145, 70, "VOLTAGE", voltage_text, cyan, panel, border);
this->draw_metric_card_(it, font, 165, 42, 145, 70, "CURRENT", current_text, orange, panel, border);
this->draw_metric_card_(it, font, 10, 122, 145, 70, "POWER", power_text, yellow, panel, border);
this->draw_metric_card_(it, font, 165, 122, 145, 70, "TEMP", temperature_text, magenta, panel, border);
it.filled_rectangle(10, 202, 300, 30, panel_dim);
it.filled_rectangle(10, 202, 300, 1, border);
it.filled_rectangle(10, 231, 300, 1, border);
it.filled_rectangle(10, 202, 1, 30, border);
it.filled_rectangle(309, 202, 1, 30, border);
it.print(24, 209, font, inactive, esphome::display::TextAlign::TOP_LEFT, "CAP");
it.print(67, 209, font, white, esphome::display::TextAlign::TOP_LEFT, capacity_text);
it.print(143, 209, font, inactive, esphome::display::TextAlign::TOP_LEFT, "ENERGY");
it.print(206, 209, font, white, esphome::display::TextAlign::TOP_LEFT, energy_text);
it.print(306, 209, font, green, esphome::display::TextAlign::TOP_RIGHT, atorch_runtime);
}
}
private:
@@ -551,6 +599,32 @@ class Meter {
return (c >= '0' && c <= '9') ? static_cast<char>(c) : ' ';
}
void format_metric_(char *buffer, size_t size, float value, const char *unit, uint8_t decimals) const {
if (!std::isfinite(value)) {
snprintf(buffer, size, "-- %s", unit);
return;
}
char format[12];
snprintf(format, sizeof(format), "%%.%uf %%s", decimals);
snprintf(buffer, size, format, value, unit);
}
void draw_metric_card_(Display &it, esphome::display::BaseFont *font, int x, int y, int w, int h,
const char *title, const char *value, Color accent, Color fill, Color border) {
const Color bg(0, 0, 0);
const Color fg(235, 235, 235);
const Color inactive(90, 100, 110);
it.filled_rectangle(x, y, w, h, fill);
it.filled_rectangle(x, y, w, 2, accent);
it.filled_rectangle(x, y + h - 1, w, 1, border);
it.filled_rectangle(x, y, 1, h, border);
it.filled_rectangle(x + w - 1, y, 1, h, border);
it.print(x + 10, y + 10, font, inactive, esphome::display::TextAlign::TOP_LEFT, title);
it.print(x + w / 2, y + 38, font, fg, esphome::display::TextAlign::CENTER, value);
it.filled_rectangle(x + 10, y + h - 11, w - 20, 3, bg);
it.filled_rectangle(x + 10, y + h - 11, w - 20, 1, accent);
}
void label_(Display &it, esphome::display::BaseFont *font, int x, int y, const char *text, Color color) {
it.print(x, y, font, color, esphome::display::TextAlign::TOP_LEFT, text);
}
esphome/lab-ble-proxy.yaml
+47 -20
View File
@@ -1,6 +1,7 @@
# Derived work based on https://github.com/reaper7/M5Stack_BLE_client_Owon_B35T by reaper7.
# AI (ChatGPT) has been used to adopt the Arduino sketch to ESPHome.
# AI (ChatGPT (GPT5.5), Qwen3.6) has been used to adopt the Arduino sketch to ESPHome.
# Ported to M5Stack Core2 due to memory constraints.
# Integrated atorch ble proxy functionality from https://github.com/syssi/esphome-atorch-dl24 by syssi.
substitutions:
name: "lab-ble-proxy"
@@ -68,6 +69,12 @@ wifi:
captive_portal:
globals:
- id: display_page
type: int
initial_value: "0"
restore_value: no
interval:
- interval: 10s
then:
@@ -146,6 +153,7 @@ font:
"-",
".",
"/",
":",
"0",
"1",
"2",
@@ -182,6 +190,7 @@ font:
"Y",
"Z",
"a",
"b",
"c",
"d",
"e",
@@ -190,9 +199,11 @@ font:
"h",
"i",
"k",
"l",
"m",
"n",
"o",
"p",
"r",
"s",
"t",
@@ -212,7 +223,19 @@ display:
model: M5CORE2
update_interval: 500ms
lambda: |-
owon_meter.render(it, id(meter_font));
owon_meter.render(
it,
id(meter_font),
id(display_page),
id(atorch_running).state,
id(atorch_voltage).has_state() ? id(atorch_voltage).state : NAN,
id(atorch_current).has_state() ? id(atorch_current).state : NAN,
id(atorch_power).has_state() ? id(atorch_power).state : NAN,
id(atorch_capacity).has_state() ? id(atorch_capacity).state : NAN,
id(atorch_energy).has_state() ? id(atorch_energy).state : NAN,
id(atorch_temperature).has_state() ? id(atorch_temperature).state : NAN,
id(atorch_runtime_formatted).has_state() ? id(atorch_runtime_formatted).state.c_str() : "--:--:--"
);
touchscreen:
- platform: ft63x6
@@ -220,6 +243,18 @@ touchscreen:
display: lcd
binary_sensor:
- platform: touchscreen
touchscreen_id: touch
id: btn_toggle_page
x_min: 70
x_max: 250
y_min: 45
y_max: 195
on_press:
then:
- lambda: |-
id(display_page) = 1 - id(display_page);
id(lcd).update();
- platform: touchscreen
id: button_a
touchscreen_id: touch
@@ -296,11 +331,6 @@ binary_sensor:
lambda: |-
return owon_meter.low_battery;
- platform: atorch_dl24
atorch_dl24_id: atorch0
running:
name: "${friendly_name} Atorch Running"
sensor:
- platform: ble_client
type: characteristic
@@ -323,20 +353,22 @@ sensor:
atorch_dl24_id: atorch0
voltage:
name: "${friendly_name} Atorch Voltage"
id: atorch_voltage
current:
name: "${friendly_name} Atorch Current"
id: atorch_current
power:
name: "${friendly_name} Atorch Power"
id: atorch_power
capacity:
name: "${friendly_name} Atorch Capacity"
energy:
name: "${friendly_name} Atorch Energy"
id: atorch_capacity
temperature:
name: "${friendly_name} Atorch Temperature"
id: atorch_temperature
dim_backlight:
name: "${friendly_name} Atorch Dim Backlight"
runtime:
name: "${friendly_name} Atorch Runtime"
id: atorch_dim_backlight
text_sensor:
- platform: template
@@ -355,11 +387,6 @@ text_sensor:
lambda: |-
return owon_meter.mode_text();
- platform: atorch_dl24
atorch_dl24_id: atorch0
runtime_formatted:
name: "${friendly_name} Atorch Runtime Formatted"
button:
- platform: atorch_dl24
atorch_dl24_id: atorch0
@@ -400,7 +427,7 @@ button:
value: !lambda "return std::vector<uint8_t>({2, 0x01});"
- platform: template
name: "OWON HLD/LIG"
name: "OWON HOLD | LIGHT"
id: owon_btn_hold
on_press:
- ble_client.ble_write:
@@ -410,7 +437,7 @@ button:
value: !lambda "return std::vector<uint8_t>({3, 0x01});"
- platform: template
name: "OWON REL/BT"
name: "OWON RELATIVE | BT"
id: owon_btn_rel
on_press:
- ble_client.ble_write:
@@ -420,7 +447,7 @@ button:
value: !lambda "return std::vector<uint8_t>({4, 0x01});"
- platform: template
name: "OWON HZ/DUTY"
name: "OWON HZ | DUTY"
id: owon_btn_hz
on_press:
- ble_client.ble_write:
@@ -430,7 +457,7 @@ button:
value: !lambda "return std::vector<uint8_t>({5, 0x01});"
- platform: template
name: "OWON MAX/MIN"
name: "OWON MAX | MIN"
id: owon_btn_maxmin
on_press:
- ble_client.ble_write: