Files
MeshCore-Solo/src/helpers/esp32/DualSerialInterface.h
T
JakubandClaude Opus 5.5 4ab9d949ec perf(ui-lvgl): lower clock when idle, fewer redraws, wake on BLE frames
- CPU at 80 MHz with the screen on after 2 s without touch or animation;
  a touch restores the full clock before its frame is drawn
- setText(): periodic refreshes no longer redraw unchanged labels
  (status bar, Home, lock, Diag, GPS, compass, clock, map, nav, nearby)
- map markers kept across the 3 s rebuild when unchanged
- app connected: the loop blocks until a BLE frame arrives
  (serialFrameArrived / hasPendingFrames) instead of polling every 2 ms
- PSRAM: boot frame sprite and the HTTP response buffer released

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 11:51:18 +02:00

92 lines
3.7 KiB
C++

#pragma once
#include "../BaseSerialInterface.h"
#include "../ArduinoSerialInterface.h"
#include "SerialBLEInterface.h"
// ESP32 counterpart of helpers/nrf52/DualSerialInterface.h: wraps BLE + USB
// serial so one build serves both companion transports. BLE takes priority when
// connected, USB is always ready as a fallback.
// enable()/disable() control BLE only — USB is always on.
// BLE state machine is only pumped when BLE is enabled; USB is not read while
// BLE is connected.
class DualSerialInterface : public BaseSerialInterface {
SerialBLEInterface _ble;
ArduinoSerialInterface _usb;
uint8_t _ble_buf[MAX_FRAME_SIZE];
uint8_t _usb_buf[MAX_FRAME_SIZE];
bool _ble_enabled;
bool _ble_was_connected;
public:
DualSerialInterface() : _ble_enabled(false), _ble_was_connected(false) {}
void begin(const char* ble_prefix, char* node_name, uint32_t pin_code, Stream& usb_stream) {
_ble.begin(ble_prefix, node_name, pin_code);
_usb.begin(usb_stream);
_usb.enable(); // USB is always on
}
void enable() override { _ble.enable(); _ble_enabled = true; }
void disable() override { _ble.disable(); _ble_enabled = false; }
bool isEnabled() const override { return _ble_enabled; }
// Always true — USB is always available as fallback, so the mesh can send.
bool isConnected() const override { return true; }
// True only when a BLE companion app is paired and connected.
bool isBLEConnected() const override { return _ble_enabled && _ble.isConnected(); }
#if defined(ARDUINO_USB_MODE) && ARDUINO_USB_MODE == 0 && defined(ARDUINO_USB_CDC_ON_BOOT) && ARDUINO_USB_CDC_ON_BOOT == 1
// Native USB CDC (e.g. Heltec V4): Serial's bool operator reflects whether
// the host actually has the port open, same DTR-style signal the nRF52
// version reads. Counts as a connected client same as BLE, matching that
// version's behaviour.
bool isClientConnected() const override { return isBLEConnected() || (bool)Serial; }
#else
// BLE only, unlike the nRF52 version, which also counts a USB host holding the
// CDC port open. These boards reach USB through a UART bridge rather than
// native CDC, so there is no DTR to read: (bool)Serial is a plain "is the
// peripheral initialised", i.e. always true once begin() has run, and
// ArduinoSerialInterface::isConnected() likewise hardcodes true. Reporting
// that as a connected client would permanently convince the UI an app is
// watching the device and stop it waking the display for new messages.
bool isClientConnected() const override { return isBLEConnected(); }
#endif
// USB can't tell without reading it.
bool hasPendingFrames() const override {
return (_ble_enabled && _ble.isConnected()) ? _ble.hasPendingFrames() : true;
}
bool isWriteBusy() const override {
return (_ble_enabled && _ble.isConnected()) ? _ble.isWriteBusy() : _usb.isWriteBusy();
}
size_t writeFrame(const uint8_t src[], size_t len) override {
return (_ble_enabled && _ble.isConnected()) ? _ble.writeFrame(src, len) : _usb.writeFrame(src, len);
}
size_t checkRecvFrame(uint8_t dest[]) override {
if (_ble_enabled) {
size_t ble_len = _ble.checkRecvFrame(_ble_buf);
bool ble_now = _ble.isConnected();
if (ble_now) {
_ble_was_connected = true;
if (ble_len > 0) { memcpy(dest, _ble_buf, ble_len); return ble_len; }
return 0; // BLE active — don't read USB to keep its state machine clean
}
if (_ble_was_connected) {
// BLE just disconnected — reset USB state machine so stale partial frames don't block it
_ble_was_connected = false;
_usb.enable();
return 0;
}
}
size_t usb_len = _usb.checkRecvFrame(_usb_buf);
if (usb_len > 0) { memcpy(dest, _usb_buf, usb_len); return usb_len; }
return 0;
}
};