FUNCTIONAL CODE

Code has been reviewed and now functional and ready for design review. Going to make small changes to comments, but code is pretty ready to go.

Author: MadisonC-SparkFun

Examples/Example1_BasicReadings/Example1_BasicReadings.ino

@@ -2,7 +2,6 @@
 #include <Wire.h>
 
 STHS34PF80_I2C mySensor;
-// STHS34PF80_SPI mySensor; 
 
 // Values to fill with presence and motion data
 int16_t presenceVal = 0;
@@ -15,12 +14,16 @@ void setup()
     Serial.println("STHS34PF80 Example 1: Basic Readings");
 
     // Begin I2C
-    Wire.begin();
+    if(Wire.begin() == false)
+    {
+      Serial.println("I2C Error - check I2C Address");
+      while(1);
+    }
 
     // Establish communication with device 
     if(mySensor.begin() == false)
     {
-      Serial.println("Error"); // fix this print message
+      Serial.println("Error setting up device - please check wiring.");
       while(1);
     }
 
@@ -31,12 +34,13 @@ void loop()
 {
   bool dataReady =  mySensor.getDataReady();
 
+  // Check whether sensor has new data - run through loop if data is ready
   if(dataReady == 1)
   {
     sths34pf80_tmos_func_status_t status;
     mySensor.getStatus(&status);
 
-    // If the flag is high, then read out the information
+    // If presence flag is high, then print data
     if(status.pres_flag == 1)
     {
       // Presence Units: cm^-1
@@ -51,4 +55,65 @@ void loop()
     }
   }
 
-}
+}
+
+
+
+
+
+
+
+// #include "SparkFun_STHS34PF80_Arduino_Library.h"
+// #include <Wire.h>
+
+// STHS34PF80_I2C mySensor;
+
+// // Global Presence Value
+// int16_t presenceVal = 0;
+
+// void setup()
+// {
+//     Serial.begin(115200);
+//     Serial.println("STHS34PF80 Example 5: Arduino Serial Plotter Presence Output");
+
+//     // Begin I2C
+//     if(Wire.begin() == false)
+//     {
+//       Serial.println("I2C Error - check I2C Address");
+//       while(1);
+//     }
+
+//     // Establish communication with device 
+//     if(mySensor.begin() != 0)
+//     {
+//       Serial.println("Sensor failed to begin - Check wiring.");
+//       while(1);
+//     }
+
+//     Serial.println("Open the Serial Plotter for graphical viewing");
+
+//     // Default ODR: 1Hz
+
+//     delay(1000);
+// }
+
+// void loop()
+// {
+
+//   bool dataReady = mySensor.getDataReady();
+    
+//   if(dataReady == 1)
+//   {
+//     sths34pf80_tmos_func_status_t status;
+//     mySensor.getStatus(&status);
+    
+    
+//     // If the flag is high, then read out the information
+//     if(status.pres_flag == 1)
+//     {
+//       mySensor.getPresenceValue(&presenceVal);
+//       Serial.println(presenceVal);
+//     }
+//   }
+      
+// }

examples/Example2_Interrupts/Example2_Interrupts.ino

@@ -2,69 +2,81 @@
 #include <Wire.h>
 
 STHS34PF80_I2C mySensor;
-// STHS34PF80_SPI mySensor; 
 
-// Values to fill with presence and motion data
+// Values to fill with presence data
 int16_t presenceVal = 0;
-int16_t motionVal = 0;
 
 // Change the pin number to the pin that has been chosen for your setup
 int intPin = 12;
 
-sths34pf80_tmos_route_int_t interruptRoute = STHS34PF80_TMOS_INT_DRDY;
+// Star the flag as false
+bool volatile interruptFlag = false;
 
+// ISR to set the triggered interrupt
+void isr1()
+{
+  interruptFlag = true;
+}
 
 void setup()
 {
+    // Begin I2C transactions
     Serial.begin(115200);
     Serial.println("STHS34PF80 Example 2: Interrupts");
 
-    // Begin I2C transactions
-    Wire.begin();
-
-    // Checks established connection
-    if(mySensor.begin() == false)
+    // Begin I2C
+    if(Wire.begin() == false)
     {
-      Serial.println("Error"); // fix this print message
+      Serial.println("I2C Error - check I2C Address");
       while(1);
     }
 
-    // Data Ready signal routed to the INT pin
-    mySensor.setTmosRouteInterrupt(interruptRoute);
-
-    // **FINISH READING INTERRUPT SECTION TO MAKE SURE NO MORE IS NEEDED**
+    // Establish communication with device 
+    if(mySensor.begin() != 0)
+    {
+      Serial.println("Sensor failed to begin - Check wiring.");
+      while(1);
+    }
 
     // Set INT pin to be triggered on rising and falling edges of INT pin
     pinMode(intPin, INPUT);
+    // Attach interrupt to the pin as a digital pin that triggers on a change
+    attachInterrupt(digitalPinToInterrupt(intPin), isr1, CHANGE);
+
+    // Route all interrupts from device to interrupt pin
+    mySensor.setTmosRouteInterrupt(STHS34PF80_TMOS_INT_OR);
+
+    // Enable the presence interrupt source 
+    // (see page 17 of application note AN5867 for more information)
+    mySensor.setTmosInterruptOR(STHS34PF80_TMOS_INT_PRESENCE);
 
-    delay(1000);
+    // Set interrupt value to pulsed on the INT pin
+    mySensor.setInterruptPulsed(0);
+
+    delay(500);
 }
 
 void loop() 
 {
-
-  // Value to read interrupt pin status
-  int interruptVal = digitalRead(intPin);
-    
-  if(interruptVal == HIGH)
+  // If interrupt is triggered
+  if(interruptFlag == true)
   {
-    sths34pf80_tmos_func_status_t status = mySensor.getStatus();
+    interruptFlag = false;
+    
+    sths34pf80_tmos_func_status_t status;
+    mySensor.getStatus(&status);
+    
+    Serial.println("Data ready!");
+    
 
     // If the flag is high, then read out the information
     if(status.pres_flag == 1)
     {
       // Presence Units: cm^-1
       mySensor.getPresenceValue(&presenceVal);
       Serial.print("Presence: ");
-      Serial.println(presenceVal);
-    }
-
-    if(status.mot_flag == 1)
-    {
-      mySensor.getMotionValue(&motionVal);
-      Serial.print("Motion: ");
-      Serial.println(motionVal);
+      Serial.print(presenceVal);
+      Serial.println("cm^-1");
     }
   }
-
 }

examples/Example3_EmbeddedFunctions/Example3_EmbeddedFunctions.ino

@@ -2,50 +2,55 @@
 #include <Wire.h>
 
 STHS34PF80_I2C mySensor;
-// STHS34PF80_SPI mySensor; 
 
 int16_t presenceVal = 0;
 int16_t motionVal = 0;
 
-sths34pf80_mem_bank_t bankDisable = STHS34PF80_MAIN_MEM_BANK;
-sths34pf80_mem_bank_t bankEnable = STHS34PF80_EMBED_FUNC_MEM_BANK;
-
-uint16_t threshold = 500;
+uint16_t threshold = 1000;
 uint8_t hysteresis = 100;
 
 
 void setup()
 {
     Serial.begin(115200);
-    Serial.println("STHS34PF80 Example 3: Embedded Functions");
-
-    Wire.begin();
+    Serial.println("STHS34PF80 Example 3: Using Embedded Functions");
 
-    if(mySensor.begin() == false)
+    // Begin I2C
+    if(Wire.begin() == false)
     {
-      Serial.println("Error"); // fix this print message
+      Serial.println("I2C Error - check I2C Address");
       while(1);
     }
 
-    // Enter power-down mode
-    
+    // Establish communication with device 
+    if(mySensor.begin() != 0)
+    {
+      Serial.println("Sensor failed to begin - Check wiring.");
+      while(1);
+    }
 
+    // Steps below follow Section 2.1 in the Application Note AN5867
+    // Enter power-down mode by setting ODR to 0
+    mySensor.setTmosODR(STHS34PF80_TMOS_ODR_OFF);
     // Enable access to embedded functions registers
-    mySensor.setMemoryBank(bankEnable);
-    
-    // Set threshold for the presence sensing
+    mySensor.setMemoryBank(STHS34PF80_EMBED_FUNC_MEM_BANK);
+
+    // Set threshold for the presence sensing (Default = 0xC8)
     // NOTE: Presence Flag goes high when presence read is above threshold
     mySensor.setPresenceThreshold(threshold);
-    // Set threshold for the motion sensing
-    mySensor.setMotionThreshold(threshold);
+    Serial.print("Presence value set: ");
+    Serial.println(threshold);
     // Set hysteresis for the presence sensing (default value: 50LSB)
     mySensor.setPresenceHysteresis(hysteresis);
-    // Set hysteresis for the motion sensing
+    // Set hysteresis for the motion sensing (Default = 0x32)
     mySensor.setMotionHysteresis(hysteresis);
+    Serial.print("Presence and Motion Hysteresis Set: ");
+    Serial.println(hysteresis);
 
     // Disable access to embedded functions registers
-    mySensor.setMemoryBank(bankDisable);
+    mySensor.setMemoryBank(STHS34PF80_MAIN_MEM_BANK);
     // Enter continuous mode 
+    mySensor.setTmosODR(STHS34PF80_TMOS_ODR_AT_1Hz);
 
     delay(1000);
 }
@@ -55,23 +60,25 @@ void loop()
     // General presence and motion read (from example 1)
   bool dataReady = mySensor.getDataReady();
 
-  if(dataReady == true)
+  if(dataReady == 1)
   {
-    sths34pf80_tmos_func_status_t status = mySensor.getStatus();
+    sths34pf80_tmos_func_status_t status;
+    mySensor.getStatus(&status);
 
-    // Presence Flag - Only reads if the flag is high 
+    // Check if the presence (data ready) flag is high. If so, print the presence value
     if(status.pres_flag == 1)
     {
+      // Presence Units: cm^-1
       mySensor.getPresenceValue(&presenceVal);
       Serial.print("Presence: ");
-      Serial.println(presenceVal);
+      Serial.print(presenceVal);
+      Serial.println("cm^-1");
     }
-    // Motion Flag
+
+    // Motion detected or not
     if(status.mot_flag == 1)
     {
-      mySensor.getMotionValue(&motionVal);
-      Serial.print("Motion: ");
-      Serial.println(motionVal);
+      Serial.println("Motion detected! ");
     }
   }
 }