Update examples. Ready for test

Author: PaulZC

examples/Example1_BasicReadings/Example1_BasicReadings.ino

@@ -26,15 +26,15 @@ SCD4x mySensor;
 void setup()
 {
   Serial.begin(115200);
-  Serial.println("SCD4x Example");
+  Serial.println(F("SCD4x Example"));
   Wire.begin();
 
   mySensor.enableDebugging(); // Uncomment this line to get helpful debug messages on Serial
 
   //.begin will start periodic measurements for us (see the later examples for details on how to overrride this)
   if (mySensor.begin() == false)
   {
-    Serial.println("Sensor not detected. Please check wiring. Freezing...");
+    Serial.println(F("Sensor not detected. Please check wiring. Freezing..."));
     while (1)
       ;
   }
@@ -44,23 +44,23 @@ void setup()
 
 void loop()
 {
-  if (mySensor.getDataReadyStatus()) // getDataReadyStatus will return true when fresh data is available
+  if (mySensor.readMeasurement()) // readMeasurement will return true when fresh data is available
   {
     Serial.println();
 
-    Serial.print("CO2(ppm):");
+    Serial.print(F("CO2(ppm):"));
     Serial.print(mySensor.getCO2());
 
-    Serial.print("\tTemperature(C):");
+    Serial.print(F("\tTemperature(C):"));
     Serial.print(mySensor.getTemperature(), 1);
 
-    Serial.print("\tHumidity(%RH):");
+    Serial.print(F("\tHumidity(%RH):"));
     Serial.print(mySensor.getHumidity(), 1);
 
     Serial.println();
   }
   else
-    Serial.print(".");
+    Serial.print(F("."));
 
   delay(500);
 }

examples/Example2_LowPowerReadings/Example2_LowPowerReadings.ino

@@ -0,0 +1,85 @@
+/*
+  Reading CO2, humidity and temperature from the SCD4x in Low Power mode
+  By: Paul Clark
+  Based on earlier code by: Nathan Seidle
+  SparkFun Electronics
+  Date: June 3rd, 2021
+  License: MIT. See license file for more information but you can
+  basically do whatever you want with this code.
+
+  Feel like supporting open source hardware?
+  Buy a board from SparkFun! https://www.sparkfun.com/products/nnnnn
+
+  This example prints the current CO2 level, relative humidity, and temperature in C.
+
+  Hardware Connections:
+  Attach RedBoard to computer using a USB cable.
+  Connect SCD40/41 to RedBoard using Qwiic cable.
+  Open Serial Monitor at 115200 baud.
+*/
+
+#include <Wire.h>
+
+#include "SparkFun_SCD4x_Arduino_Library.h" //Click here to get the library: http://librarymanager/All#SparkFun_SCD4x
+SCD4x mySensor;
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println(F("SCD4x Example"));
+  Wire.begin();
+
+  mySensor.enableDebugging(); // Uncomment this line to get helpful debug messages on Serial
+
+  //.begin will start periodic measurements for us (see the later examples for details on how to overrride this)
+  if (mySensor.begin() == false)
+  {
+    Serial.println(F("Sensor not detected. Please check wiring. Freezing..."));
+    while (1)
+      ;
+  }
+
+  //By default, the SCD4x has data ready every five seconds.
+  //We can enable low power operation and receive a reading every ~30 seconds
+
+  //But first, we need to stop periodic measurements otherwise startLowPowerPeriodicMeasurement will fail
+  if (mySensor.stopPeriodicMeasurement() == true)
+  {
+    Serial.println(F("Periodic measurement is disabled!"));
+  }  
+
+  //Now we can enable low power periodic measurements
+  if (mySensor.startLowPowerPeriodicMeasurement() == true)
+  {
+    Serial.println(F("Low power mode enabled!"));
+  }
+
+  //Finally, we need to restart periodic measurements
+  if (mySensor.startPeriodicMeasurement() == true)
+  {
+    Serial.println(F("Periodic measurements restarted!"));
+  }
+}
+
+void loop()
+{
+  if (mySensor.readMeasurement()) // readMeasurement will return true when fresh data is available
+  {
+    Serial.println();
+
+    Serial.print(F("CO2(ppm):"));
+    Serial.print(mySensor.getCO2());
+
+    Serial.print(F("\tTemperature(C):"));
+    Serial.print(mySensor.getTemperature(), 1);
+
+    Serial.print(F("\tHumidity(%RH):"));
+    Serial.print(mySensor.getHumidity(), 1);
+
+    Serial.println();
+  }
+  else
+    Serial.print(F("."));
+
+  delay(1000);
+}

examples/Example2_SetOptions/Example2_SetOptions.ino

@@ -0,0 +1,78 @@
+/*
+  Disable Auto Calibration
+  By: Paul Clark
+  Based on earlier code by: Nathan Seidle
+  SparkFun Electronics
+  Date: June 3rd, 2021
+  License: MIT. See license file for more information but you can
+  basically do whatever you want with this code.
+
+  Feel like supporting open source hardware?
+  Buy a board from SparkFun! https://www.sparkfun.com/products/nnnnn
+
+  This example prints the current CO2 level, relative humidity, and temperature in C.
+
+  Hardware Connections:
+  Attach RedBoard to computer using a USB cable.
+  Connect SCD40/41 to RedBoard using Qwiic cable.
+  Open Serial Monitor at 115200 baud.
+*/
+
+#include <Wire.h>
+
+#include "SparkFun_SCD4x_Arduino_Library.h" //Click here to get the library: http://librarymanager/All#SparkFun_SCD4x
+SCD4x mySensor;
+
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println(F("SCD4x Example"));
+  Wire.begin();
+
+  mySensor.enableDebugging(); // Uncomment this line to get helpful debug messages on Serial
+
+  //.begin has three boolean parameters:
+  //  measBegin: set to true to begin periodic measurements automatically;
+  //             set to false to leave periodic measurements disabled.
+  //             Default is true.
+  //  autoCalibrate: set to true to leave automatic calibration enabled;
+  //                 set to false to disable automatic calibration.
+  //                 Default is true.
+  //  skipStopPeriodicMeasurements: set to true to make .begin skip the initial call of stopPeriodicMeasurement;
+  //                                set to false to make .begin stop periodic measurements before doing anything else.
+  //                                Default is false.
+  //Please see the next example for a full description of skipStopPeriodicMeasurements
+
+  //In this example, we call .begin and set autoCalibrate to false to disable automatic calibration
+  if (mySensor.begin(true, false) == false)
+  //measBegin_________/     |
+  //autoCalibrate__________/
+  {
+    Serial.println(F("Sensor did not begin correctly. Please check wiring. Freezing..."));
+    while (1)
+      ;
+  }
+}
+
+void loop()
+{
+  if (mySensor.readMeasurement()) // readMeasurement will return true when fresh data is available
+  {
+    Serial.println();
+
+    Serial.print(F("CO2(ppm):"));
+    Serial.print(mySensor.getCO2());
+
+    Serial.print(F("\tTemperature(C):"));
+    Serial.print(mySensor.getTemperature(), 1);
+
+    Serial.print(F("\tHumidity(%RH):"));
+    Serial.print(mySensor.getHumidity(), 1);
+
+    Serial.println();
+  }
+  else
+    Serial.print(F("."));
+
+  delay(500);
+}