Files
pelgraine 353048aab3 So the power investigation wraps up like this:
GPS — fixed (the "off" toggle and boot path now actually cut the XL9555 rail). Kept in main.cpp + UITask.cpp.
BLE controller — the ~13 mA between the BLE build (BLE off) and standalone is the controller staying initialised; the boot-gate in SerialBLEInterface.cpp/.h defers BLEDevice::init() until first enable, reclaiming it. That's the meaningful idle win.
CPU, gyro rail, ES8311, frontlight — all measured and ruled out. The residual ~12 mA Max-vs-Pro is distributed always-on hardware with no software switch — hardware overhead, not a bug.

Defer ESP32 BLE controller bring-up to first user enable
MyMesh::startInterface() called serial.enable() unconditionally at boot. On the ESP32 BLE build this ran the deferred-init SerialBLEInterface's _realBegin()/BLEDevice::init() and powered the BT controller before main.cpp's boot-time disable(), which only stops advertising and cannot power the controller back down -- so the controller stayed up while "off", drawing ~13 mA at idle. Guard the enable() so ESP32 BLE builds skip it at boot; the controller now comes up lazily on the first enable() when the user turns Bluetooth on from the Bluetooth page. WiFi builds are unaffected and still enable at boot.
2026-06-07 00:09:56 +10:00

113 lines
3.1 KiB
C++

#pragma once
#include <Arduino.h>
// CPU Frequency Scaling for ESP32-S3
//
// Typical current draw (CPU only, rough):
// 240 MHz ~70-80 mA
// 160 MHz ~50-60 mA
// 80 MHz ~30-40 mA
// 40 MHz ~15-20 mA (low-power / lock screen mode)
//
// SPI peripherals and UART use their own clock dividers from the APB clock,
// so LoRa, e-ink, and GPS serial all work fine at 80MHz and 40MHz.
#ifdef ESP32
#ifndef CPU_FREQ_IDLE
#define CPU_FREQ_IDLE 80 // MHz — normal mesh listening
#endif
#ifndef CPU_FREQ_BOOST
#define CPU_FREQ_BOOST 240 // MHz — heavy processing
#endif
#ifndef CPU_FREQ_LOW_POWER
#define CPU_FREQ_LOW_POWER 80 // MHz — lock screen / idle standby (40 MHz breaks I2C)
#endif
#ifndef CPU_BOOST_TIMEOUT_MS
#define CPU_BOOST_TIMEOUT_MS 10000 // 10 seconds
#endif
class CPUPowerManager {
public:
CPUPowerManager() : _boosted(false), _lowPower(false), _boost_started(0) {}
void begin() {
setCpuFrequencyMhz(CPU_FREQ_IDLE);
_boosted = false;
_lowPower = false;
MESH_DEBUG_PRINTLN("CPU power: idle at %d MHz", CPU_FREQ_IDLE);
}
void loop() {
if (_boosted && (millis() - _boost_started >= CPU_BOOST_TIMEOUT_MS)) {
// Return to low-power if locked, otherwise normal idle
if (_lowPower) {
setCpuFrequencyMhz(CPU_FREQ_LOW_POWER);
MESH_DEBUG_PRINTLN("CPU power: boost expired, returning to low-power %d MHz", CPU_FREQ_LOW_POWER);
} else {
setCpuFrequencyMhz(CPU_FREQ_IDLE);
MESH_DEBUG_PRINTLN("CPU power: idle at %d MHz", CPU_FREQ_IDLE);
}
_boosted = false;
}
}
void setBoost() {
if (!_boosted) {
setCpuFrequencyMhz(CPU_FREQ_BOOST);
_boosted = true;
MESH_DEBUG_PRINTLN("CPU power: boosted to %d MHz", CPU_FREQ_BOOST);
}
_boost_started = millis();
}
void setIdle() {
if (_boosted) {
setCpuFrequencyMhz(CPU_FREQ_IDLE);
_boosted = false;
MESH_DEBUG_PRINTLN("CPU power: idle at %d MHz", CPU_FREQ_IDLE);
}
if (_lowPower) {
_lowPower = false;
}
}
// Low-power mode — drops CPU to 40 MHz for lock screen standby.
// If currently boosted, the boost timeout will return to 40 MHz
// instead of 80 MHz.
void setLowPower() {
_lowPower = true;
if (!_boosted) {
setCpuFrequencyMhz(CPU_FREQ_LOW_POWER);
MESH_DEBUG_PRINTLN("CPU power: low-power at %d MHz", CPU_FREQ_LOW_POWER);
}
// If boosted, the loop() timeout will drop to low-power instead of idle
}
// Exit low-power mode — returns to normal idle (80 MHz).
// If currently boosted, the boost timeout will return to idle
// instead of low-power.
void clearLowPower() {
_lowPower = false;
if (!_boosted) {
setCpuFrequencyMhz(CPU_FREQ_IDLE);
MESH_DEBUG_PRINTLN("CPU power: idle at %d MHz (low-power cleared)", CPU_FREQ_IDLE);
}
// If boosted, the loop() timeout will drop to idle as normal
}
bool isBoosted() const { return _boosted; }
bool isLowPower() const { return _lowPower; }
uint32_t getFrequencyMHz() const { return getCpuFrequencyMhz(); }
private:
bool _boosted;
bool _lowPower;
unsigned long _boost_started;
};
#endif // ESP32