fixed WakeFromRTC_C33

examples/DeepSleep_WakeFromRTC_H7/DeepSleep_WakeFromRTC_H7.ino

@@ -0,0 +1,83 @@
+/*
+  Charger Demo
+
+  This sketch demonstrates how to use the PowerManagement library enable low power modes on the Arduino Portenta H7.
+  * In the setup() function, it enters standby mode and waits for a wakeup event from the RTC.
+  * The loop() functionit is not used in this sketch.
+  
+  IMPORTANT: Please note that this sketch has to be uploaded to the M4 core too in order to achieve the lowest power consumption.
+
+  Requirements:
+  - Arduino Arduino Portenta H7
+  - Arduino IDE
+  - PowerManagement library (installable from the Arduino Library Manager)
+
+  Usage:
+
+  1. Connect a battery to the board.    
+  
+  2. Upload the Sketch to the M4 core:
+    - Open the provided sketch in the Arduino IDE.
+    - Select your board type and port from the "Tools" menu.
+    - Select the M4 core from the "Tools" menu.
+    - Click the "Upload" button to upload the sketch to your board.
+
+  3. Upload the Sketch to the M7 core:
+    - Select the M7 core from the "Tools" menu.
+    - Click the "Upload" button to upload the sketch to your board.
+
+  4. Observer LED behavior:
+    - The blue LED will turn on when the board is awake.
+    - The blue LED will turn off when the board goes to sleep.
+    - The red LED will blink if the board fails to initialize.
+*/
+
+#include "Arduino_PowerManagement.h"
+#include "MAX1726Driver.h"
+
+Board board;
+Charger charger;
+MAX1726Driver fuelgauge(&Wire1);
+
+void setup() {
+    // When uploading this sketch to the M4 core, it just goes to standby mode.
+    #if defined(ARDUINO_GENERIC_STM32H747_M4)
+      board.standByUntilWakeupEvent();
+      return;
+    #endif
+
+    charger.begin();
+
+    // Turn off the built-in LED
+    pinMode(LED_BUILTIN, OUTPUT);
+    digitalWrite(LED_BUILTIN, HIGH);
+
+    // Turn on the blue LED to show that the board is still awake
+    pinMode(LEDB, OUTPUT);    
+    digitalWrite(LEDB, LOW);
+
+    if(!board.begin()){
+        // If the board fails to initialize, it will blink the red LED
+        pinMode(LEDR, OUTPUT);
+        while (true){
+            digitalWrite(LEDR, LOW);
+            delay(1000);
+            digitalWrite(LEDR, HIGH);
+            delay(1000);
+        }
+    }
+
+    charger.setEnabled(false); // -> Please measure if it makes a difference
+    delay(10000); // -> Give time to take the measurement
+
+    // Takes 45s to get into shutdown mode
+    fuelgauge.setOperationMode(FuelGaugeOperationMode::shutdown);
+
+    // The LED should go off when the board goes to sleep
+    board.setAllPeripheralsPower(false);    
+
+    board.enableWakeupFromRTC(0, 0, 60); // Go to standby for 60 seconds
+    board.standByUntilWakeupEvent();
+}
+
+void loop() {} 

examples/Standby_WakeFromRTC_C33/Standby_WakeFromRTC_C33.ino

@@ -14,7 +14,7 @@ void blinkLed(int ledPin, int delayTime = 1000){
 }
 
 void setup() {
-    board.setAllPeripheralsPower(true); // TODO: Check if this is necessary
+
 
     pinMode(LEDR, OUTPUT); // Used to indicate errors
     digitalWrite(LEDR, HIGH); // Turn off the red LED
@@ -24,14 +24,17 @@ void setup() {
     digitalWrite(LED_BUILTIN, HIGH); // Turn off the built-in LED
     pinMode(LEDB, OUTPUT); // Used to indicate that the board is awake    
 
-    // Turn on the blue LED to show that the board is still awake
-    digitalWrite(LEDB, LOW);
+
 
     if(!board.begin()){
         while (true){
             blinkLed(LEDR);
         }
     }
+
+    board.setAllPeripheralsPower(true); // TODO: Check if this is necessary
+      // Turn on the blue LED to show that the board is still awake
+    digitalWrite(LEDB, LOW);
 
     RTC.begin();
     if (!RTC.isRunning()) {
@@ -43,8 +46,11 @@ void setup() {
     }
 
     board.enableWakeupFromRTC(0, 0, 10, [](){}, &RTC); // Sleep for 10 seconds
-    // board.setAllPeripheralsPower(false);
+
+    delay(1000); // Let the user see that the board is ready to sleep
+
+    board.setAllPeripheralsPower(false);
     board.standByUntilWakeupEvent();
 }
 
-void loop(){}
+void loop(){}

src/Board.cpp

@@ -319,4 +319,4 @@ bool Board::setReferenceVoltage(float voltage) {
 
 
     return UNKNOWN_VALUE;
-}
+}