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Merge pull request #3525 from oltaco/airoha-sleep

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Use Airoha AG3335 backup mode sleep for faster GPS fix time
This commit is contained in:
ripplebiz
2026-09-30 12:32:44 +10:00
committed by GitHub
parent 33468c4f80 74413f0e4d
commit 5846fa19c8
6 changed files with 66 additions and 70 deletions
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src/helpers/sensors/AirohaSleep.h
+19
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@@ -0,0 +1,19 @@
#pragma once
#include <helpers/sensors/LocationProvider.h>
// Board must keep the GPS RTC backup pin powered and can cut GPS power once we return.
// Returns true if the command was acked within 3 attempts, otherwise returns false.
static inline bool airohaEnterSleep(LocationProvider* nmea) {
for (uint8_t attempt = 0; attempt < 3; attempt++) {
nmea->drain();
nmea->sendSentence("$PAIR650,0");
if (nmea->waitFor("$PAIR001,650,0", 50)) { // wait for the command received signal
#ifdef GPS_NMEA_DEBUG
Serial.printf("Airoha RTC Backup sleep command accepted by GPS after %u attempts\r\n", attempt + 1);
#endif
nmea->waitFor("$PAIR650,0", 50); // give the GPS 50ms grace to signal it is ready for sleep
return true;
}
}
return false;
}
src/helpers/sensors/LocationProvider.h
+2
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@@ -19,6 +19,8 @@ public:
virtual bool isValid() = 0;
virtual long getTimestamp() = 0;
virtual void sendSentence(const char * sentence);
virtual bool waitFor(const char* prefix, uint32_t timeout_ms) { return false; }
virtual void drain() { }
virtual void reset() = 0;
virtual void begin() = 0;
virtual void stop() = 0;
src/helpers/sensors/MicroNMEALocationProvider.h
+21
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@@ -173,10 +173,31 @@ public :
return dt.unixtime();
}
void drain() { while (_gps_serial->available()) _gps_serial->read(); }
const char* getSentence() const { return nmea.getSentence(); }
void sendSentence(const char *sentence) override {
nmea.sendSentence(*_gps_serial, sentence);
}
bool waitFor(const char* prefix, uint32_t timeout_ms) {
size_t plen = strlen(prefix);
uint32_t timeout = millis() + timeout_ms;
while ((int32_t)(millis() - timeout) < 0) {
if (_gps_serial->available()) {
char c = _gps_serial->read();
#ifdef GPS_NMEA_DEBUG
Serial.print(c);
#endif
if (nmea.process(c) && strncmp(nmea.getSentence(), prefix, plen) == 0) return true;
} else {
yield();
}
}
return false;
}
void loop() override {
while (_gps_serial->available()) {
variants/meshtracker_x1/target.cpp
+10 -28
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@@ -1,6 +1,7 @@
#include <Arduino.h>
#include "target.h"
#include <helpers/sensors/MicroNMEALocationProvider.h>
#include <helpers/sensors/AirohaSleep.h>
MeshTrackerX1Board board;
@@ -27,46 +28,27 @@ mesh::LocalIdentity radio_new_identity() {
void MeshTrackerX1SensorManager::start_gps() {
gps_active = true;
// this init sequence comes from seeed examples and deals with all gps pins
pinMode(GPS_EN, OUTPUT);
digitalWrite(GPS_EN, HIGH);
delay(10);
pinMode(GPS_VRTC_EN, OUTPUT);
digitalWrite(GPS_VRTC_EN, HIGH);
delay(10);
pinMode(GPS_RESET, OUTPUT);
digitalWrite(GPS_RESET, HIGH);
delay(10);
digitalWrite(GPS_RESET, LOW);
pinMode(GPS_SLEEP_INT, OUTPUT);
digitalWrite(GPS_SLEEP_INT, HIGH);
pinMode(GPS_RTC_INT, OUTPUT);
digitalWrite(GPS_RTC_INT, LOW);
}
void MeshTrackerX1SensorManager::sleep_gps() {
gps_active = false;
digitalWrite(GPS_VRTC_EN, HIGH); // keep RTC alive for faster fix on wake
digitalWrite(GPS_EN, LOW);
digitalWrite(GPS_RESET, LOW);
digitalWrite(GPS_SLEEP_INT, HIGH);
digitalWrite(GPS_RTC_INT, HIGH);
delay(5);
digitalWrite(GPS_RTC_INT, LOW);
}
void MeshTrackerX1SensorManager::stop_gps() {
gps_active = false;
digitalWrite(GPS_VRTC_EN, LOW);
digitalWrite(GPS_VRTC_EN, HIGH); // keep GPS RTC alive for faster fix on wake
digitalWrite(GPS_RTC_INT, LOW); // make sure this is LOW so we can pulse it to wake
airohaEnterSleep(_nmea);
digitalWrite(GPS_EN, LOW);
digitalWrite(GPS_RESET, LOW);
digitalWrite(GPS_SLEEP_INT, HIGH);
digitalWrite(GPS_RTC_INT, LOW);
}
bool MeshTrackerX1SensorManager::begin() {
// init GPS
Serial1.begin(GPS_BAUD_RATE);
digitalWrite(GPS_RESET, HIGH);
delay(10);
digitalWrite(GPS_RESET, LOW);
// init SPA06-003 barometer
baro_ok = spa06.begin(SPA06_003_DEFAULT_ADDR, &Wire) || spa06.begin(0x76, &Wire);
@@ -122,7 +104,7 @@ const char* MeshTrackerX1SensorManager::getSettingValue(int i) const {
bool MeshTrackerX1SensorManager::setSettingValue(const char* name, const char* value) {
if (strcmp(name, "gps") == 0) {
if (strcmp(value, "0") == 0) {
sleep_gps(); // sleep for faster fix !
stop_gps();
} else {
start_gps();
}
variants/t1000-e/target.cpp
+10 -38
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@@ -2,6 +2,7 @@
#include "t1000e_sensors.h"
#include "target.h"
#include <helpers/sensors/MicroNMEALocationProvider.h>
#include <helpers/sensors/AirohaSleep.h>
T1000eBoard board;
@@ -81,56 +82,28 @@ mesh::LocalIdentity radio_new_identity() {
void T1000SensorManager::start_gps() {
gps_active = true;
//_nmea->begin();
// this init sequence should be better
// comes from seeed examples and deals with all gps pins
pinMode(GPS_EN, OUTPUT);
digitalWrite(GPS_EN, HIGH);
delay(10);
pinMode(GPS_VRTC_EN, OUTPUT);
digitalWrite(GPS_VRTC_EN, HIGH);
delay(10);
pinMode(GPS_RESET, OUTPUT);
digitalWrite(GPS_RESET, HIGH);
delay(10);
digitalWrite(GPS_RESET, LOW);
pinMode(GPS_SLEEP_INT, OUTPUT);
digitalWrite(GPS_SLEEP_INT, HIGH);
pinMode(GPS_RTC_INT, OUTPUT);
digitalWrite(GPS_RTC_INT, HIGH);
delay(5);
digitalWrite(GPS_RTC_INT, LOW);
pinMode(GPS_RESETB, INPUT_PULLUP);
}
void T1000SensorManager::sleep_gps() {
gps_active = false;
digitalWrite(GPS_VRTC_EN, HIGH);
digitalWrite(GPS_EN, LOW);
digitalWrite(GPS_RESET, HIGH);
digitalWrite(GPS_SLEEP_INT, HIGH);
digitalWrite(GPS_RTC_INT, LOW);
pinMode(GPS_RESETB, OUTPUT);
digitalWrite(GPS_RESETB, LOW);
//_nmea->stop();
}
void T1000SensorManager::stop_gps() {
gps_active = false;
digitalWrite(GPS_VRTC_EN, LOW);
digitalWrite(GPS_VRTC_EN, HIGH); // keep GPS RTC alive for faster fix on wake
digitalWrite(GPS_RTC_INT, LOW); // make sure this is LOW so we can pulse it to wake
airohaEnterSleep(_nmea); // send command to put the GPS into RTC backup sleep
digitalWrite(GPS_EN, LOW);
digitalWrite(GPS_RESET, HIGH);
digitalWrite(GPS_SLEEP_INT, HIGH);
digitalWrite(GPS_RTC_INT, LOW);
pinMode(GPS_RESETB, OUTPUT);
digitalWrite(GPS_RESETB, LOW);
//_nmea->stop();
}
bool T1000SensorManager::begin() {
// init GPS
Serial1.begin(115200);
digitalWrite(GPS_RESET, HIGH);
delay(10);
digitalWrite(GPS_RESET, LOW);
return true;
}
@@ -156,7 +129,6 @@ void T1000SensorManager::loop() {
node_lat = ((double)_nmea->getLatitude())/1000000.;
node_lon = ((double)_nmea->getLongitude())/1000000.;
node_altitude = ((double)_nmea->getAltitude()) / 1000.0;
//Serial.printf("lat %f lon %f\r\n", _lat, _lon);
}
next_gps_update = millis() + 1000;
}
@@ -176,7 +148,7 @@ const char* T1000SensorManager::getSettingValue(int i) const {
bool T1000SensorManager::setSettingValue(const char* name, const char* value) {
if (strcmp(name, "gps") == 0) {
if (strcmp(value, "0") == 0) {
sleep_gps(); // sleep for faster fix !
stop_gps();
} else {
start_gps();
}
variants/t1000-e/variant.cpp
+4 -4
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@@ -71,7 +71,7 @@ void initVariant()
pinMode(LUX_SENSOR, INPUT);
pinMode(EXT_CHRG_DETECT, INPUT);
pinMode(EXT_PWR_DETECT, INPUT);
pinMode(GPS_RESETB, INPUT);
pinMode(GPS_RESETB, INPUT_PULLUP);
pinMode(PIN_BUTTON1, INPUT);
pinMode(PIN_3V3_EN, OUTPUT);
@@ -89,10 +89,10 @@ void initVariant()
digitalWrite(PIN_3V3_ACC_EN, LOW);
digitalWrite(BUZZER_EN, LOW);
digitalWrite(SENSOR_EN, LOW);
digitalWrite(GPS_EN, LOW);
digitalWrite(GPS_EN, HIGH);
digitalWrite(GPS_RESET, LOW);
digitalWrite(GPS_VRTC_EN, LOW);
digitalWrite(GPS_SLEEP_INT, HIGH);
digitalWrite(GPS_VRTC_EN, HIGH);
digitalWrite(GPS_SLEEP_INT, LOW);
digitalWrite(GPS_RTC_INT, LOW);
digitalWrite(LED_PIN, LOW);
}