mirror of
https://github.com/MarekZegare4/MeshCore-Solo.git
synced 2026-10-09 19:26:40 +00:00
JakubandClaude Opus 5.5
b50ecc83d5
The speaker's I2S channel was only disabled when idle, which leaves MCLK running. Its fractional divider (160 MHz / 39 1/16 = 4.096 MHz) makes a comb of lines every 256 kHz: one at 869.632 MHz, in the EU narrow mesh channel, lifted the LoRa noise floor from ~-102 to ~-85 dBm, and others land near GPS L1 and BeiDou B1. The channel is now deleted and its pins held low after each sound, and made again for the next one. Measured: noise floor -102 dBm, outdoor first fix 87 s (was 620 s and more). Also: TCXO at 3.0 V (the L2's part, as Meshtastic has it); GLONASS enabled on the L76K after each power-up; begin() on a running receiver no longer resets it (a reset threw away the acquisition in progress). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
#include <Arduino.h>
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#include "target.h"
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WioTrackerL2Board board;
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static SPIClass spi;
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RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
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WRAPPER_CLASS radio_driver(radio, board);
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ESP32RTCClock fallback_clock;
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AutoDiscoverRTCClock rtc_clock(fallback_clock);
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L2GpsProvider gps(Serial1, &rtc_clock);
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EnvironmentSensorManager sensors(gps);
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#ifdef DISPLAY_CLASS
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DISPLAY_CLASS display;
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MomentaryButton user_btn(PIN_USER_BTN, 1000, true, true, false); // no multi-click: back answers at once
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#endif
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#ifdef BUZZER_I2S
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void buzzerAmpPower(bool on) { board.setSpeakerAmp(on); }
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#endif
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void L2GpsProvider::begin() {
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if (_started && board.gnssPowered() && !_uart_off) return; // already running
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board.setGnssPower(true); // with the power-up reset
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if (_uart_off) { // back from stop(): the UART again
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Serial1.setRxBufferSize(1024);
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Serial1.begin(GPS_BAUD_RATE, SERIAL_8N1, PIN_GPS_TX, PIN_GPS_RX);
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_uart_off = false;
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}
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MicroNMEALocationProvider::begin();
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_started = true;
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_cfg_pending = true;
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_cfg_rx = rxChars();
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}
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// The L76K starts with GPS + BeiDou only; GLONASS as well gives it a third
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// more satellites. Sent once it has booted (NMEA arriving), again after each
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// power-up (not saved in the module).
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void L2GpsProvider::loop() {
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MicroNMEALocationProvider::loop();
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if (_cfg_pending && rxChars() - _cfg_rx > 200) {
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_cfg_pending = false;
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sendSentence("$PCAS04,7"); // GPS + BeiDou + GLONASS
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}
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}
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void L2GpsProvider::stop() {
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MicroNMEALocationProvider::stop();
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// The UART's TX idling high would feed the unpowered module through its pin.
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Serial1.end();
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pinMode(PIN_GPS_RX, INPUT); // PIN_GPS_RX: the module's RX, our TX
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_uart_off = true;
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board.setGnssPower(false);
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}
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// The sensor manager resets right after every begin(); begin() already did
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// the power-up one, and a second would restart a running receiver.
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void L2GpsProvider::reset() { }
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bool L2GpsProvider::isEnabled() { return board.gnssPowered(); }
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bool radio_init() {
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MESH_DEBUG_PRINTLN("radio_init: rtc + sx1262 init");
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fallback_clock.begin();
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rtc_clock.begin(Wire); // Wire already running on 47/48 from board.begin()
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bool ok = radio.std_init(&spi);
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MESH_DEBUG_PRINTLN("radio_init: SX1262 %s", ok ? "OK" : "FAILED");
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return ok;
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}
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mesh::LocalIdentity radio_new_identity() {
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RadioNoiseListener rng(radio);
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return mesh::LocalIdentity(&rng); // create new random identity
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}
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