Routers / Repeaters deep sleep default w/ LoRA interrupts (#3251)

* Experimenting with deep sleep routers / repeaters

* Make decision to SDS or LS based on Router/Repeater role

* Don't sleep LoRA on router / repeater deep sleep

* Guards

* Platform guards

* Rename method

src/PowerFSM.cpp

@@ -245,6 +245,7 @@ Fsm powerFSM(&stateBOOT);
 void PowerFSM_setup()
 {
     bool isRouter = (config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER ? 1 : 0);
+    bool isInfrastructureRole = isRouter || config.device.role == meshtastic_Config_DeviceConfig_Role_REPEATER;
     bool isTrackerOrSensor = config.device.role == meshtastic_Config_DeviceConfig_Role_TRACKER ||
                              config.device.role == meshtastic_Config_DeviceConfig_Role_TAK_TRACKER ||
                              config.device.role == meshtastic_Config_DeviceConfig_Role_SENSOR;
@@ -357,10 +358,10 @@ void PowerFSM_setup()
     // Don't add power saving transitions if we are a power saving tracker or sensor. Sleep will be initiatiated through the
     // modules
     if ((isRouter || config.power.is_power_saving) && !isTrackerOrSensor) {
-        powerFSM.add_timed_transition(&stateNB, &stateLS,
+        powerFSM.add_timed_transition(&stateNB, isInfrastructureRole ? &stateSDS : &stateLS,
                                       getConfiguredOrDefaultMs(config.power.min_wake_secs, default_min_wake_secs), NULL,
                                       "Min wake timeout");
-        powerFSM.add_timed_transition(&stateDARK, &stateLS,
+        powerFSM.add_timed_transition(&stateDARK, isInfrastructureRole ? &stateSDS : &stateLS,
                                       getConfiguredOrDefaultMs(config.power.wait_bluetooth_secs, default_wait_bluetooth_secs),
                                       NULL, "Bluetooth timeout");
     }

src/sleep.cpp

@@ -186,7 +186,15 @@ void doDeepSleep(uint32_t msecToWake, bool skipPreflight = false)
     // not using wifi yet, but once we are this is needed to shutoff the radio hw
     // esp_wifi_stop();
     waitEnterSleep(skipPreflight);
+#ifdef ARCH_ESP32
+    if (shouldLoraWake(msecToWake)) {
+        notifySleep.notifyObservers(NULL);
+    } else {
         notifyDeepSleep.notifyObservers(NULL);
+    }
+#else
+    notifyDeepSleep.notifyObservers(NULL);
+#endif
 
     screen->doDeepSleep(); // datasheet says this will draw only 10ua
 
@@ -240,6 +248,11 @@ void doDeepSleep(uint32_t msecToWake, bool skipPreflight = false)
     }
 #endif
 
+#ifdef ARCH_ESP32
+    if (shouldLoraWake(msecToWake)) {
+        enableLoraInterrupt();
+    }
+#endif
     cpuDeepSleep(msecToWake);
 }
 
@@ -294,12 +307,7 @@ esp_sleep_wakeup_cause_t doLightSleep(uint64_t sleepMsec) // FIXME, use a more r
     gpio_wakeup_enable((gpio_num_t)BUTTON_PIN, GPIO_INTR_LOW_LEVEL);
 #endif
 #endif
-#if defined(LORA_DIO1) && (LORA_DIO1 != RADIOLIB_NC)
+    enableLoraInterrupt();
-    gpio_wakeup_enable((gpio_num_t)LORA_DIO1, GPIO_INTR_HIGH_LEVEL); // SX126x/SX128x interrupt, active high
-#endif
-#ifdef RF95_IRQ
-    gpio_wakeup_enable((gpio_num_t)RF95_IRQ, GPIO_INTR_HIGH_LEVEL); // RF95 interrupt, active high
-#endif
 #ifdef PMU_IRQ
     // wake due to PMU can happen repeatedly if there is no battery installed or the battery fills
     if (pmu_found)
@@ -359,4 +367,30 @@ void enableModemSleep()
     int rv = esp_pm_configure(&esp32_config);
     LOG_DEBUG("Sleep request result %x\n", rv);
 }
+
+bool shouldLoraWake(uint32_t msecToWake)
+{
+    return msecToWake < portMAX_DELAY && (config.device.role == meshtastic_Config_DeviceConfig_Role_ROUTER ||
+                                          config.device.role == meshtastic_Config_DeviceConfig_Role_REPEATER);
+}
+
+void enableLoraInterrupt()
+{
+#if SOC_PM_SUPPORT_EXT_WAKEUP && defined(LORA_DIO1) && (LORA_DIO1 != RADIOLIB_NC)
+    rtc_gpio_pulldown_en((gpio_num_t)LORA_DIO1);
+#if defined(LORA_RESET) && (LORA_RESET != RADIOLIB_NC)
+    rtc_gpio_pullup_en((gpio_num_t)LORA_RESET);
+#endif
+#if defined(LORA_CS) && (LORA_CS != RADIOLIB_NC)
+    rtc_gpio_pullup_en((gpio_num_t)LORA_CS);
+#endif
+    // Setup deep sleep with wakeup by external source
+    esp_sleep_enable_ext0_wakeup((gpio_num_t)LORA_DIO1, RISING);
+#elif defined(LORA_DIO1) && (LORA_DIO1 != RADIOLIB_NC)
+    gpio_wakeup_enable((gpio_num_t)LORA_DIO1, GPIO_INTR_HIGH_LEVEL); // SX126x/SX128x interrupt, active high
+#endif
+#ifdef RF95_IRQ
+    gpio_wakeup_enable((gpio_num_t)RF95_IRQ, GPIO_INTR_HIGH_LEVEL); // RF95 interrupt, active high
+#endif
+}
 #endif

src/sleep.h

@@ -44,3 +44,7 @@ extern Observable<void *> notifyDeepSleep;
 /// Called to tell GPS thread to enter deep sleep independently of LoRa/MCU sleep, prior to full poweroff. Must return 0
 extern Observable<void *> notifyGPSSleep;
 void enableModemSleep();
+#ifdef ARCH_ESP32
+void enableLoraInterrupt();
+bool shouldLoraWake(uint32_t msecToWake);
+#endif