Update examples, fix bugs.

Made the command mode the first example.
Made continuous mode the second example and filled it out.
Populated Example 3 for Synchronous start mode.
Fixed getStatus function.
Fixed startMeasurement function.

Author: SFE-Brudnerd

examples/Example01_BasicSetup/Example01_BasicSetup.ino

@@ -32,7 +32,7 @@ void loop() {
   if(SFE_BUS_OK != myUVSensor.setStartStateMode(START_STATE_ENABLED))
     Serial.println("Error starting reading!");
 
-  delay((1 << myUVSensor.getConfigConversionTime()));
+  delay(2+(1 << myUVSensor.getConfigConversionTime()));
 
   if(SFE_BUS_OK != myUVSensor.readAllUV())
     Serial.println("Error reading UV.");
@@ -46,4 +46,4 @@ void loop() {
 
   delay(2000);
 
-};
+};

examples/Example02_OneShot/Example02_OneShot.ino renamed to examples/Example01_Basic_OneShot/Example01_Basic_OneShot.ino

@@ -0,0 +1,70 @@
+#include "SparkFun_AS7331.h"
+
+SfeAS7331ArdI2C myUVSensor;
+
+int8_t result = SFE_BUS_OK;
+
+const uint8_t interruptPin = 26;
+volatile bool newDataReady = false;
+
+void setup() {
+  Serial.begin(115200);
+  while(!Serial){delay(100);};
+  Serial.println("AS7331 UV A/B/C Continuous mode example.");
+
+  // Configure Interrupt.
+  pinMode(interruptPin, INPUT);
+  attachInterrupt(digitalPinToInterrupt(interruptPin), dataReadyInterrupt, RISING);
+
+  // Initialize sensor and run default setup.
+  if(myUVSensor.begin() == false) {
+    Serial.println("Sensor failed to begin. Please check your wiring!");
+    Serial.println("Spinning...");
+    while(1);
+  }
+
+  Serial.println("Sensor began.");
+
+  // Set break time to 900us (112 * 8us) to account for the time it takes to poll data.
+  if(SFE_BUS_OK != myUVSensor.setBreakTime(112)) {
+    Serial.println("Sensor did not set break time properly.");
+    Serial.println("Spinning...");
+    while(1);
+  }
+
+  // Set measurement mode and change device operating mode to measure.
+  if(myUVSensor.startMeasurement(MEAS_MODE_CONT) == false) {
+    Serial.println("Sensor did not get set properly.");
+    Serial.println("Spinning...");
+    while(1);
+  }
+
+  Serial.println("Set mode to continuous. Starting measurement...");
+
+  // Begin measurement.
+  if(SFE_BUS_OK != myUVSensor.setStartStateMode(START_STATE_ENABLED))
+    Serial.println("Error starting reading!");
+
+}
+
+void loop() {
+
+  if(newDataReady) {
+    newDataReady = false;
+
+    if(SFE_BUS_OK != myUVSensor.readAllUV())
+      Serial.println("Error reading UV.");
+  
+    Serial.print("UVA:");
+    Serial.print(myUVSensor.measures.uva);
+    Serial.print(" UVB:");
+    Serial.print(myUVSensor.measures.uvb);
+    Serial.print(" UVC:");
+    Serial.println(myUVSensor.measures.uvc);
+  }
+
+}
+
+void dataReadyInterrupt() {
+  newDataReady = true;
+}

examples/Example02_CONT_Mode/Example02_CONT_Mode.ino

@@ -4,10 +4,81 @@ SfeAS7331ArdI2C myUVSensor;
 
 int8_t result = SFE_BUS_OK;
 
+const uint8_t synPin = 27;
+
+const uint8_t interruptPin = 26;
+volatile bool newDataReady = false;
+
 void setup() {
+  Serial.begin(115200);
+  while(!Serial){delay(100);};
+  Serial.println("AS7331 UV A/B/C Synchronous Start mode example.");
+
+  // Configure SYN pin.
+  pinMode(synPin, OUTPUT);
+  digitalWrite(synPin, HIGH); // Active low, so start high.
+
+  // Configure Interrupt.
+  pinMode(interruptPin, INPUT);
+  attachInterrupt(digitalPinToInterrupt(interruptPin), dataReadyInterrupt, RISING);
+
+  // Initialize sensor and run default setup.
+  if(myUVSensor.begin() == false) {
+    Serial.println("Sensor failed to begin. Please check your wiring!");
+    Serial.println("Spinning...");
+    while(1);
+  }
+
+  Serial.println("Sensor began.");
+
+  // // Set break time to 900us (112 * 8us) to account for the time it takes to poll data.
+  // if(SFE_BUS_OK != myUVSensor.setBreakTime(112)) {
+  //   Serial.println("Sensor did not set break time properly.");
+  //   Serial.println("Spinning...");
+  //   while(1);
+  // }
+
+  // Set measurement mode and change device operating mode to measure.
+  if(myUVSensor.startMeasurement(MEAS_MODE_SYNS) == false) {
+    Serial.println("Sensor did not get set properly.");
+    Serial.println("Spinning...");
+    while(1);
+  }
+
+  Serial.println("Set mode to synchronous. Starting measurement...");
+
+  // Begin measurement.
+  if(SFE_BUS_OK != myUVSensor.setStartStateMode(START_STATE_ENABLED))
+    Serial.println("Error starting reading!");
+    
+  digitalWrite(synPin, LOW);
+  delay(1);
+  digitalWrite(synPin, HIGH);
 
 }
 
 void loop() {
 
-};
+  if(newDataReady) {
+    newDataReady = false;
+
+    if(SFE_BUS_OK != myUVSensor.readAllUV())
+      Serial.println("Error reading UV.");
+
+    digitalWrite(synPin, LOW);
+    delay(1);
+    digitalWrite(synPin, HIGH);
+  
+    Serial.print("UVA:");
+    Serial.print(myUVSensor.measures.uva);
+    Serial.print(" UVB:");
+    Serial.print(myUVSensor.measures.uvb);
+    Serial.print(" UVC:");
+    Serial.println(myUVSensor.measures.uvc);
+  }
+
+}
+
+void dataReadyInterrupt() {
+  newDataReady = true;
+}

examples/Example03_SYNS_Mode/Example03_SYNS_Mode.ino

@@ -279,9 +279,6 @@ class SfeAS7331Base {
             if(_state.pd == POWER_DOWN_ENABLE)
                 if(SFE_BUS_OK != setPowerState(POWER_DOWN_DISABLE)) return false;
 
-            if(_state.opMode != DEVICE_MODE_MEAS)
-                if(SFE_BUS_OK != setOperationMode(DEVICE_MODE_MEAS)) return false;
-
             if(_state.mmode != measMode)
             {
                 if(SFE_BUS_OK != setStandbyMode(STANDBY_DISABLED)) 
@@ -290,6 +287,9 @@ class SfeAS7331Base {
                     return false;
             }
 
+            if(_state.opMode != DEVICE_MODE_MEAS)
+                if(SFE_BUS_OK != setOperationMode(DEVICE_MODE_MEAS)) return false;
+
             if(startMeasure)
                 if(SFE_BUS_OK != setStartStateMode(START_STATE_ENABLED)) return false;
 
@@ -1090,7 +1090,17 @@ class SfeAS7331Base {
         /// @return 0 if successful, negative if error, positive for warning.
         int8_t getStatus(sfe_as7331_reg_meas_osr_status_t *statusReg)
         {
-            return readRegister(SFE_AS7331_REGISTER_MEAS_OSR_STATUS, statusReg, 2U);
+            int8_t result = SFE_BUS_OK;
+            uint8_t statusRaw[2];
+
+            result = readRegister(SFE_AS7331_REGISTER_MEAS_OSR_STATUS, statusRaw, 2U);
+
+            if(SFE_BUS_OK != result)
+                return result;
+            
+            statusReg->word = ((uint16_t)statusRaw[1] << 8) | statusRaw[0];
+
+            return SFE_BUS_OK;
         }
 
         /// @brief Gets the operational state register when in configuration operation mode.