Added enterDeepSleep() for NRF52 and shutdownPeripherals() for ESP32

src/MeshCore.h

@@ -62,6 +62,7 @@ public:
   virtual void onAfterTransmit() { }
   virtual void reboot() = 0;
   virtual void powerOff() { /* no op */ }
+  virtual void enterDeepSleep(uint32_t secs) { /* no op */ }
   // Called by example setup() functions to signal that boot is complete.
   // Boards may override to stop a boot-indicator LED sequence or similar.
   // Default no-op: boards that don't care need not implement anything.

src/helpers/ESP32Board.cpp

@@ -45,11 +45,7 @@ bool ESP32Board::startOTAUpdate(const char* id, char reply[]) {
 }
 #endif
 
-void ESP32Board::powerOff() {
-  enterDeepSleep(0); // Do not wakeup
-}
-
-void ESP32Board::enterDeepSleep(uint32_t secs) {
+void ESP32Board::shutdownPeripherals() {
   // Power off the display if any
 #ifdef DISPLAY_CLASS
   display.turnOff();
@@ -74,6 +70,14 @@ void ESP32Board::enterDeepSleep(uint32_t secs) {
   // Flush serial buffers
   Serial.flush();
   delay(100);
+}
+
+void ESP32Board::powerOff() {
+  enterDeepSleep(0); // Do not wakeup
+}
+
+void ESP32Board::enterDeepSleep(uint32_t secs) {
+  shutdownPeripherals();
 
   // Clear stale wakeup sources to avoid ghost wakeup
   // This is required when Power Management and automatic lightsleep are enabled

src/helpers/ESP32Board.h

@@ -64,8 +64,9 @@ public:
     return raw / 4;
   }
 
+  virtual void shutdownPeripherals();
   virtual void powerOff() override;
-  void enterDeepSleep(uint32_t secs);
+  virtual void enterDeepSleep(uint32_t secs) override;
 
   uint32_t getIRQGpio() override {
     return P_LORA_DIO_1; // default for SX1262

src/helpers/NRF52Board.cpp

@@ -383,6 +383,29 @@ void NRF52Board::powerOff() {
   }
 }
 
+void NRF52Board::enterDeepSleep(uint32_t secs) {
+  if (secs == 0) {
+    powerOff(); // Not wake up
+  } else {
+    shutdownPeripherals();
+
+// Clear FPU interrupt flags to avoid insomnia
+// see errata 87 for details
+// https://docs.nordicsemi.com/bundle/errata_nRF52840_Rev3/page/ERR/nRF52840/Rev3/latest/anomaly_840_87.html
+#if (__FPU_USED == 1)
+    __set_FPSCR(__get_FPSCR() & ~(0x0000009F));
+    (void)__get_FPSCR();
+    NVIC_ClearPendingIRQ(FPU_IRQn);
+#endif
+
+    // Attemp to sleep
+    vTaskDelay(pdMS_TO_TICKS(secs * 1000));
+
+    // Reboot for a fresh recovery
+    reboot();
+  }
+}
+
 bool NRF52Board::getBootloaderVersion(char* out, size_t max_len) {
     static const char BOOTLOADER_MARKER[] = "UF2 Bootloader ";
     const uint8_t* flash = (const uint8_t*)0x000FB000; // earliest known info.txt location is 0xFB90B, latest is 0xFCC4B

src/helpers/NRF52Board.h

@@ -52,6 +52,7 @@ public:
   virtual void reboot() override { NVIC_SystemReset(); }
   virtual void shutdownPeripherals();
   virtual void powerOff() override;
+  virtual void enterDeepSleep(uint32_t secs) override;
   virtual bool getBootloaderVersion(char* version, size_t max_len) override;
   virtual bool startOTAUpdate(const char *id, char reply[]) override;
   virtual void sleep(uint32_t secs) override;

variants/gat562_30s_mesh_kit/GAT56230SMeshKitBoard.h

@@ -43,11 +43,11 @@ public:
   }
 #endif
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     uint32_t button_pin = PIN_BUTTON1;
     nrf_gpio_cfg_input(button_pin, NRF_GPIO_PIN_PULLUP);
     nrf_gpio_cfg_sense_set(button_pin, NRF_GPIO_PIN_SENSE_LOW);
-    NRF52Board::powerOff();
   }
-
 };

variants/gat562_mesh_evb_pro/GAT562EVBProBoard.h

@@ -43,11 +43,11 @@ public:
   }
 #endif
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     uint32_t button_pin = PIN_BUTTON1;
     nrf_gpio_cfg_input(button_pin, NRF_GPIO_PIN_PULLUP);
     nrf_gpio_cfg_sense_set(button_pin, NRF_GPIO_PIN_SENSE_LOW);
-    NRF52Board::powerOff();
   }
-
 };

variants/gat562_mesh_tracker_pro/GAT562MeshTrackerProBoard.h

@@ -43,11 +43,11 @@ public:
   }
 #endif
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     uint32_t button_pin = PIN_BUTTON1;
     nrf_gpio_cfg_input(button_pin, NRF_GPIO_PIN_PULLUP);
     nrf_gpio_cfg_sense_set(button_pin, NRF_GPIO_PIN_SENSE_LOW);
-    NRF52Board::powerOff();
   }
-
 };

variants/gat562_mesh_watch13/GAT56MeshWatch13Board.h

@@ -34,11 +34,11 @@ public:
   }
 
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     uint32_t button_pin = PIN_BUTTON1;
     nrf_gpio_cfg_input(button_pin, NRF_GPIO_PIN_PULLUP);
     nrf_gpio_cfg_sense_set(button_pin, NRF_GPIO_PIN_SENSE_LOW);
-    NRF52Board::powerOff();
   }
-
 };

variants/heltec_rc32/HeltecRC32Board.cpp

@@ -31,10 +31,6 @@ void HeltecRC32Board::begin() {
   }
 }
 
-void HeltecRC32Board::powerOff() {
-  enterDeepSleep(0);
-}
-
 void HeltecRC32Board::onBeforeTransmit() {
   digitalWrite(P_LORA_TX_LED, HIGH);
 }

variants/heltec_rc32/HeltecRC32Board.h

@@ -21,7 +21,6 @@ public:
   void begin();
   void onBeforeTransmit() override;
   void onAfterTransmit() override;
-  void powerOff() override;
   uint16_t getBattMilliVolts() override;
   bool setAdcMultiplier(float multiplier) override;
   float getAdcMultiplier() const override { return adc_mult; }

variants/heltec_t096/T096Board.cpp

@@ -111,10 +111,11 @@ void T096Board::variant_shutdown() {
     nrf_gpio_cfg_default(PIN_GPS_TX);
 }
 
-void T096Board::powerOff() {
+void T096Board::shutdownPeripherals() {
+  NRF52Board::shutdownPeripherals();
+
   loRaFEMControl.setSleepModeEnable();
   nrf_gpio_cfg_default(PIN_GPS_EN); // 363uA down to 39uA
-  NRF52Board::powerOff();
 }
 
 const char* T096Board::getManufacturerName() const {

variants/heltec_t096/T096Board.h

@@ -24,7 +24,7 @@ public:
   void onAfterTransmit(void) override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override ;
-  void powerOff() override;
+  void shutdownPeripherals() override;
   bool setLoRaFemLnaEnabled(bool enable) override;
   bool canControlLoRaFemLna() const override;
   bool isLoRaFemLnaEnabled() const override;

variants/heltec_t1/T1Board.cpp

@@ -97,9 +97,10 @@ void T1Board::variant_shutdown() {
   digitalWrite(PIN_BAT_CTL, !ADC_CTRL_ENABLED);
 }
 
-void T1Board::powerOff() {
+void T1Board::shutdownPeripherals() {
+  NRF52Board::shutdownPeripherals();
+
   variant_shutdown();
-  NRF52Board::powerOff();
 }
 
 const char* T1Board::getManufacturerName() const {

variants/heltec_t1/T1Board.h

@@ -22,5 +22,5 @@ public:
   void onAfterTransmit() override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override;
-  void powerOff() override;
+  void shutdownPeripherals() override;
 };

variants/heltec_t114/T114Board.h

@@ -46,11 +46,11 @@ public:
     return "Heltec T114";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
 #ifdef LED_PIN
     digitalWrite(LED_PIN, HIGH);
 #endif
-
-    NRF52Board::powerOff();
   }
 };

variants/heltec_tower_v2/HeltecTowerV2Board.cpp

@@ -88,7 +88,9 @@ const char* HeltecTowerV2Board::getManufacturerName() const {
   return "Heltec Tower V2";
 }
 
-void HeltecTowerV2Board::powerOff() {
+void HeltecTowerV2Board::shutdownPeripherals() {
+  NRF52Board::shutdownPeripherals();
+  
   pinMode(PIN_GPS_EN, OUTPUT);
   digitalWrite(PIN_GPS_EN, !PIN_GPS_EN_ACTIVE);
   pinMode(PIN_GPS_STANDBY, OUTPUT);
@@ -99,5 +101,4 @@ void HeltecTowerV2Board::powerOff() {
   pinMode(PIN_BAT_CTL, OUTPUT);
   digitalWrite(PIN_BAT_CTL, LOW);
   variant_shutdown();
-  sd_power_system_off();
-}
+}

variants/heltec_tower_v2/HeltecTowerV2Board.h

@@ -20,5 +20,5 @@ public:
   void onAfterTransmit() override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override;
-  void powerOff() override;
+  void shutdownPeripherals() override;
 };

variants/heltec_tracker_v2/HeltecTrackerV2Board.cpp

@@ -35,12 +35,12 @@ void HeltecTrackerV2Board::begin() {
     loRaFEMControl.setRxModeEnable();
   }
 
-  void HeltecTrackerV2Board::powerOff() {
+  void HeltecTrackerV2Board::shutdownPeripherals() {
+    ESP32Board::shutdownPeripherals();
+
     // Turn off PA
     digitalWrite(P_LORA_PA_POWER, LOW);
     rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
-
-    ESP32Board::powerOff();
   }
 
   uint16_t HeltecTrackerV2Board::getBattMilliVolts()  {

variants/heltec_tracker_v2/HeltecTrackerV2Board.h

@@ -16,7 +16,7 @@ public:
   void begin();
   void onBeforeTransmit(void) override;
   void onAfterTransmit(void) override;
-  void powerOff() override;
+  void shutdownPeripherals() override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override ;
   bool setLoRaFemLnaEnabled(bool enable) override;

variants/heltec_v4/HeltecV4Board.cpp

@@ -32,12 +32,12 @@ void HeltecV4Board::begin() {
     loRaFEMControl.setRxModeEnable();
   }
 
-  void HeltecV4Board::powerOff() {
+  void HeltecV4Board::shutdownPeripherals() {
+    ESP32Board::shutdownPeripherals();
+
     // Turn off PA
     digitalWrite(P_LORA_PA_POWER, LOW);
     rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
-
-    ESP32Board::powerOff();
   }
 
   uint16_t HeltecV4Board::getBattMilliVolts()  {

variants/heltec_v4/HeltecV4Board.h

@@ -22,7 +22,7 @@ public:
   void begin();
   void onBeforeTransmit(void) override;
   void onAfterTransmit(void) override;
-  void powerOff() override;
+  void shutdownPeripherals() override;
   bool setLoRaFemLnaEnabled(bool enable) override;
   bool canControlLoRaFemLna() const override;
   bool isLoRaFemLnaEnabled() const override;

variants/heltec_v4_r8/HeltecV4R8Board.cpp

@@ -39,30 +39,10 @@ void HeltecV4R8Board::onAfterTransmit(void) {
   loRaFEMControl.setRxModeEnable();
 }
 
-void HeltecV4R8Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {
-  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
-
-  rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
-  rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
-
-  rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
+void HeltecV4R8Board::shutdownPeripherals() {
+  ESP32Board::shutdownPeripherals();
+  
   loRaFEMControl.setRxModeEnableWhenMCUSleep();
-
-  if (pin_wake_btn < 0) {
-    esp_sleep_enable_ext1_wakeup((1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);
-  } else {
-    esp_sleep_enable_ext1_wakeup((1L << P_LORA_DIO_1) | (1L << pin_wake_btn), ESP_EXT1_WAKEUP_ANY_HIGH);
-  }
-
-  if (secs > 0) {
-    esp_sleep_enable_timer_wakeup(secs * 1000000);
-  }
-
-  esp_deep_sleep_start();
-}
-
-void HeltecV4R8Board::powerOff() {
-  enterDeepSleep(0);
 }
 
 uint16_t HeltecV4R8Board::getBattMilliVolts() {

variants/heltec_v4_r8/HeltecV4R8Board.h

@@ -23,8 +23,7 @@ public:
   void begin();
   void onBeforeTransmit(void) override;
   void onAfterTransmit(void) override;
-  void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
-  void powerOff() override;
+  void shutdownPeripherals() override;
   uint16_t getBattMilliVolts() override;
   bool setAdcMultiplier(float multiplier) override {
     if (multiplier == 0.0f) {

variants/lilygo_tbeam_1w/TBeam1WBoard.cpp

@@ -47,7 +47,9 @@ const char* TBeam1WBoard::getManufacturerName() const {
   return "LilyGo T-Beam 1W";
 }
 
-void TBeam1WBoard::powerOff() {
+void TBeam1WBoard::shutdownPeripherals() {
+  ESP32Board::shutdownPeripherals();
+
   // Turn off radio LNA (CTRL pin must be LOW when not receiving)
   digitalWrite(SX126X_RXEN, LOW);
 
@@ -58,8 +60,6 @@ void TBeam1WBoard::powerOff() {
   // Turn off LED and fan
   digitalWrite(LED_PIN, LOW);
   digitalWrite(FAN_CTRL_PIN, LOW);
-
-  ESP32Board::powerOff();
 }
 
 void TBeam1WBoard::setFanEnabled(bool enabled) {

variants/lilygo_tbeam_1w/TBeam1WBoard.h

@@ -37,7 +37,7 @@ public:
   void onAfterTransmit() override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override;
-  void powerOff() override;
+  void shutdownPeripherals() override;
 
   // Fan control methods
   void setFanEnabled(bool enabled);

variants/meshtiny/MeshtinyBoard.h

@@ -34,7 +34,8 @@ public:
 
   void reboot() override { NVIC_SystemReset(); }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
 
 #ifdef PIN_USER_BTN
     while (digitalRead(PIN_USER_BTN) == LOW) {
@@ -59,8 +60,5 @@ public:
 #ifdef PIN_USER_BTN
     nrf_gpio_cfg_sense_input(g_ADigitalPinMap[PIN_USER_BTN], NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 #endif
-
-    NRF52Board::powerOff();
   }
-
 };

variants/meshtracker_x1/MeshTrackerX1Board.h

@@ -46,7 +46,9 @@ public:
     return 0;
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     #ifdef HAS_GPS
         digitalWrite(GPS_VRTC_EN, LOW);
         digitalWrite(GPS_RESET, LOW);
@@ -81,7 +83,5 @@ public:
     #ifdef BUTTON_PIN
     nrf_gpio_cfg_sense_input(BUTTON_PIN, NRF_GPIO_PIN_PULLDOWN, NRF_GPIO_PIN_SENSE_HIGH);
     #endif
-
-    sd_power_system_off();
   }
 };

variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h

@@ -45,7 +45,9 @@ public:
     return "Minewsemi";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     #ifdef HAS_GPS
         digitalWrite(GPS_VRTC_EN, LOW);
         digitalWrite(GPS_RESET, LOW);
@@ -65,7 +67,6 @@ public:
     #ifdef BUTTON_PIN
     nrf_gpio_cfg_sense_input(digitalPinToInterrupt(BUTTON_PIN), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
     #endif
-    NRF52Board::powerOff();
   }
 
   #if defined(P_LORA_TX_LED)

variants/muziworks_r1_neo/R1NeoBoard.h

@@ -20,6 +20,8 @@ public:
 
 #ifdef NRF52_POWER_MANAGEMENT
   void powerOff() override {
+    shutdownPeripherals();
+
     initiateShutdown(SHUTDOWN_REASON_USER);
   }
 #endif

variants/nano_g2_ultra/nano-g2.h

@@ -43,7 +43,9 @@ public:
 
   const char *getManufacturerName() const override { return "Nano G2 Ultra"; }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     // put GPS chip to sleep
     digitalWrite(PIN_GPS_STANDBY, LOW);
     // TODO: unset buzzer to prevent notification circuit activating on hibernate
@@ -51,7 +53,5 @@ public:
 
     nrf_gpio_cfg_sense_input(digitalPinToInterrupt(PIN_USER_BTN), NRF_GPIO_PIN_NOPULL,
                              NRF_GPIO_PIN_SENSE_LOW);
-
-    NRF52Board::powerOff();
   }
 };

variants/rak_wismesh_tag/RAKWismeshTagBoard.h

@@ -40,7 +40,9 @@ public:
     return "RAK WisMesh Tag";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     #ifdef BUZZER_EN
         digitalWrite(BUZZER_EN, LOW);
     #endif
@@ -68,7 +70,5 @@ public:
     // configure button press to wake up when in powered off state
     nrf_gpio_cfg_sense_input(digitalPinToInterrupt(BUTTON_PIN), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
     #endif
-
-    NRF52Board::powerOff();
   }
 };

variants/sensecap_solar/SenseCapSolarBoard.h

@@ -37,7 +37,9 @@ public:
     return "Seeed SenseCap Solar";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     digitalWrite(LED_WHITE, LOW);
     digitalWrite(LED_BLUE, LOW);
 
@@ -50,6 +52,10 @@ public:
     // Keep pull-up enabled in system-off so the wake line doesn't float low.
     nrf_gpio_cfg_sense_input(digitalPinToInterrupt(g_ADigitalPinMap[PIN_BUTTON1]), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 #endif
+  }
+
+  void powerOff() override {
+    shutdownPeripherals();
 
 #ifdef NRF52_POWER_MANAGEMENT
     initiateShutdown(SHUTDOWN_REASON_USER);

variants/station_g3_esp32/StationG3Board.cpp

@@ -1,6 +1,8 @@
 #include "StationG3Board.h"
 
-void StationG3Board::powerOff() {
+void StationG3Board::shutdownPeripherals() {
+  ESP32Board::shutdownPeripherals();
+
   loRaFEMControl.setSleepModeEnable();
 #ifdef P_PA1_EN
   rtc_gpio_hold_en((gpio_num_t)P_PA1_EN);
@@ -9,8 +11,6 @@ void StationG3Board::powerOff() {
 #ifdef P_PRIMARY_LNA_EN
   rtc_gpio_hold_en((gpio_num_t)P_PRIMARY_LNA_EN);
 #endif
-
-  ESP32Board::powerOff();
 }
 
 bool StationG3Board::setLoRaFemLnaEnabled(bool enable) {

variants/station_g3_esp32/StationG3Board.h

@@ -50,7 +50,7 @@ public:
   bool canControlLoRaFemPaGain() const override;
   bool isLoRaFemPaGainEnabled() const override;
 
-  void powerOff() override;
+  void shutdownPeripherals() override;
 
   uint16_t getBattMilliVolts() override {
     return 0;

variants/t1000-e/T1000eBoard.h

@@ -49,7 +49,9 @@ public:
     return 0;
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     #ifdef HAS_GPS
         digitalWrite(GPS_VRTC_EN, LOW);
         digitalWrite(GPS_RESET, LOW);
@@ -87,7 +89,5 @@ public:
     #ifdef BUTTON_PIN
     nrf_gpio_cfg_sense_input(BUTTON_PIN, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_SENSE_HIGH);
     #endif
-
-    NRF52Board::powerOff();
   }
 };

variants/thinknode_m1/ThinkNodeM1Board.h

@@ -32,14 +32,12 @@ public:
     return "Elecrow ThinkNode-M1";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
 
     // turn off all leds, sd_power_system_off will not do this for us
     #ifdef P_LORA_TX_LED
     digitalWrite(P_LORA_TX_LED, LOW);
     #endif
-
-    // power off board
-    NRF52Board::powerOff();
   }
 };

variants/thinknode_m3/ThinkNodeM3Board.h

@@ -42,13 +42,12 @@ public:
     return 0;
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     // turn off all leds, sd_power_system_off will not do this for us
     digitalWrite(PIN_LED_BLUE, !LED_STATE_ON);
     digitalWrite(PIN_LED_GREEN, !LED_STATE_ON);
     digitalWrite(PIN_LED_RED, !LED_STATE_ON);
-
-    // power off board
-    NRF52Board::powerOff();
   }
 };

variants/thinknode_m6/ThinkNodeM6Board.h

@@ -36,14 +36,12 @@ public:
     return "Elecrow ThinkNode M6";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
 
     // turn off all leds, sd_power_system_off will not do this for us
     #ifdef P_LORA_TX_LED
     digitalWrite(P_LORA_TX_LED, LOW);
     #endif
-
-    // power off board
-    NRF52Board::powerOff();
   }
 };

variants/wio-tracker-l1/WioTrackerL1Board.h

@@ -33,8 +33,4 @@ public:
   const char* getManufacturerName() const override {
     return "Seeed Wio Tracker L1";
   }
-
-  void powerOff() override {
-    NRF52Board::powerOff();
-  }
 };

variants/xiao_nrf52/XiaoNrf52Board.h

@@ -35,7 +35,9 @@ public:
     return "Seeed Xiao-nrf52";
   }
 
-  void powerOff() override {
+  void shutdownPeripherals() override {
+    NRF52Board::shutdownPeripherals();
+
     // set led on and wait for button release before poweroff
     digitalWrite(PIN_LED, LOW);
 #ifdef PIN_USER_BTN
@@ -49,8 +51,6 @@ public:
     // configure button press to wake up when in powered off state
     nrf_gpio_cfg_sense_input(digitalPinToInterrupt(g_ADigitalPinMap[PIN_USER_BTN]), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 #endif
-
-    NRF52Board::powerOff();
   }
 };