companion: suspend radio when hibernating

This should significantly reduce power consumption in the hibernation.

Implemented only for the SX126X radios, for others it's NOOP.

Also explicitly shutdown peripherals (GPS, LED) on Heltec T114.

Fixes: #1014

Signed-off-by: Jaroslav Škarvada <[email protected]>

Author: yarda

examples/companion_radio/ui-new/UITask.cpp

@@ -650,6 +650,7 @@ void UITask::shutdown(bool restart){
     _board->reboot();
   } else {
     _display->turnOff();
+    radio_driver.powerOff();
     _board->powerOff();
   }
 }

src/helpers/radiolib/CustomSX1262Wrapper.h

@@ -15,6 +15,8 @@ class CustomSX1262Wrapper : public RadioLibWrapper {
   float getLastRSSI() const override { return ((CustomSX1262 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomSX1262 *)_radio)->getSNR(); }
 
+  virtual void powerOff() override { ((CustomSX1262 *)_radio)->sleep(false); }
+
   float packetScore(float snr, int packet_len) override {
     int sf = ((CustomSX1262 *)_radio)->spreadingFactor;
     return packetScoreInt(snr, sf, packet_len);

src/helpers/radiolib/RadioLibWrappers.h

@@ -50,6 +50,8 @@ class RadioLibWrapper : public mesh::Radio {
   virtual float getLastRSSI() const override;
   virtual float getLastSNR() const override;
 
+  virtual void powerOff() { /* no op */ }
+
   float packetScore(float snr, int packet_len) override { return packetScoreInt(snr, 10, packet_len); }  // assume sf=10
 };
 

variants/heltec_t114/T114Board.h

@@ -48,6 +48,13 @@ class T114Board : public mesh::MainBoard {
   }
 
   void powerOff() override {
+    #ifdef LED_PIN
+    digitalWrite(LED_PIN, HIGH);
+    #endif
+    #if ENV_INCLUDE_GPS == 1
+    pinMode(GPS_EN, OUTPUT);
+    digitalWrite(GPS_EN, LOW);
+    #endif
     sd_power_system_off();
   }