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feat(ui-lvgl): power saving, review fixes, shared helpers

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Power: the UI loop sleeps until something is due (never with packets
queued); screen off puts the CPU at 80 MHz, the GT911 to sleep (unless a
tap wakes the screen) and the LP5814 in standby. GPS off now cuts the
L76K's rail and UART on the L2 (L2GpsProvider). The battery divider is
powered only for a reading (measured: settles at once); readings within
2 s are reused. The SD mount is retried at most every 5 s.

Fixes: WiFi left on after leaving a scan, live tiles' WiFi kept with the
screen off on the map, an ADC read every second for the status bar, touch
polled on every pass while dark, a scan cutting an update's WiFi, relay
count not refreshing in a channel thread, raw @[nick] in room previews.
Labels skip unchanged text (no redraw).

Helpers: scrollList, dimOverlay, settingRow, flexBox, nvs::get/put,
trailFilePath (a second save in the same minute no longer overwrites),
unreadTotal. Dead code removed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-09-27 00:12:08 +02:00
co-authored by Claude Opus 5.5
parent f5206f10b4
commit 23caa11f51
23 changed files with 337 additions and 347 deletions
Download Patch File Download Diff File Expand all files Collapse all files
variants/wio-tracker-l2/WioTrackerL2Display.h
+18 -7
View File
@@ -33,6 +33,7 @@ class WioTrackerL2Backlight : public lgfx::v1::ILight {
static constexpr uint8_t REG_LED0_PWM = 0x18;
uint8_t _brightness = 153; // 60%
bool _standby = false; // chip disabled (the screen is off)
void writeReg(uint8_t reg, uint8_t value) {
Wire.beginTransmission(LP5814_I2C_ADDR);
@@ -41,13 +42,7 @@ class WioTrackerL2Backlight : public lgfx::v1::ILight {
Wire.endTransmission();
}
public:
bool init(uint8_t brightness) override {
Wire.beginTransmission(LP5814_I2C_ADDR);
if (Wire.endTransmission() != 0) {
return false; // LP5814 not found
}
void configure() {
writeReg(REG_DEVICE_CONFIG0, 0x01); // chip enable
writeReg(REG_MAX_CURRENT, 0x01); // 51 mA max current
writeReg(REG_ENABLE_CONTROL, 0x00); // outputs off while configuring
@@ -59,12 +54,28 @@ public:
writeReg(REG_ENABLE_CONTROL, 0x0F); // enable all 4 channels
writeReg(REG_UPDATE, 0x55); // latch (LP5814 requires 0x55)
delay(5);
}
public:
bool init(uint8_t brightness) override {
Wire.beginTransmission(LP5814_I2C_ADDR);
if (Wire.endTransmission() != 0) {
return false; // LP5814 not found
}
configure();
setBrightness(brightness);
return true;
}
// 0 (LovyanGFX's sleep()) puts the chip in standby; the next level brings it
// back, set up again.
void setBrightness(uint8_t brightness) override {
if (brightness == 0) {
writeReg(REG_DEVICE_CONFIG0, 0x00); // chip disable: standby
_standby = true;
return;
}
if (_standby) { configure(); _standby = false; }
for (uint8_t i = 0; i < 4; i++) {
writeReg(REG_LED0_PWM + i, brightness);
}