create separate examples for SDP3x and SDP8xx

README.md

@@ -5,14 +5,17 @@ and 125Pa sensor types are supported.
 
 ## Installation
 
-1. Download the latest ZIP version from the [github releases page](https://github.com/winkj/arduino-sdp/releases). 
+1. Download the latest ZIP version from the [github releases page](https://github.com/winkj/arduino-sdp/releases).
 2. Open Arduino IDE, and select `Sketch > Include Library > Add .ZIP Library`, and select the ZIP file you downloaded in step 2
-3. Try out the example from `File > Examples > arduino-sdp > sdp_generic` (replace `arduino-sdp` with `arduino-sdp-<version>` if necessary)
+3. Try out one of the examples from `File > Examples > arduino-sdp` (replace `arduino-sdp` with `arduino-sdp-<version>` if necessary)
 
 ## Getting started
 
-To get started, have a look at the `sdp_generic` example from the "Examples" menu.
-Follow the steps below to initialize for your sensor:
+To get started, have a look at the examples from `File > Examples > arduino-sdp` (replace `arduino-sdp` with `arduino-sdp-<version>` if necessary):
+
+- For SDP3x on its default I2C address 0x21, use example `sdp3x_default_address`
+- For SDP3x on I2C address 0x22 or 0x23, use example  `sdp3x_manual_address`
+- For the SDP8xx series, use example `sdp8xx`
 
 ### Initializing for SDP3x on I2C address 0x21
 

examples/sdp_generic/sdp_generic.ino → examples/sdp3x_default_address/sdp3x_default_address.ino

@@ -2,25 +2,16 @@
 
 #include <sdpsensor.h>
 
-// use this for an SDP3x on the default I2C address of 0x21:
+// SDP3x on the default I2C address of 0x21:
 SDP3XSensor sdp;
 
-// If your SDP3x is not using the default I2C address of 0x21, uncomment the
-// line below:
-// SDP3XSensor sdp(SDP3X_I2C_ADDR_22);
-
-
-// If you're using an SDP8xx, uncomment the line below instead:
-// SDP8XXSensor sdp;
-
-
 void setup() {
   Wire.begin();
   Serial.begin(9600);
   delay(1000); // let serial console settle
 
   int ret = sdp.init();
-  if (!ret) {
+  if (ret == 0) {
       Serial.print("init(): success\n");
   } else {
       Serial.print("init(): failed, ret = ");
@@ -33,7 +24,7 @@ void setup() {
 
 void loop() {
   int ret = sdp.readSample();
-  if (!ret) {
+  if (ret == 0) {
       Serial.print("Differential pressure: ");
       Serial.print(sdp.getDifferentialPressure());
       Serial.print("Pa | ");

examples/sdp3x_manual_address/sdp3x_manual_address.ino

@@ -0,0 +1,45 @@
+#include <Wire.h>
+
+#include <sdpsensor.h>
+
+// To configure the I2C address manually, choose one of the three calls below;
+// make sure you comment out the other two, otherwise the sketch won't build!
+
+SDP3XSensor sdp(SDP3X_I2C_ADDR_21); // Address 0x21
+// SDP3XSensor sdp(SDP3X_I2C_ADDR_22); // Address 0x22
+// SDP3XSensor sdp(SDP3X_I2C_ADDR_23); // Address 0x23
+
+void setup() {
+  Wire.begin();
+  Serial.begin(9600);
+  delay(1000); // let serial console settle
+
+  int ret = sdp.init();
+  if (ret == 0) {
+      Serial.print("init(): success\n");
+  } else {
+      Serial.print("init(): failed, ret = ");
+      Serial.println(ret);
+      while (true) {
+        delay(1000);
+      }
+  }
+}
+
+void loop() {
+  int ret = sdp.readSample();
+  if (ret == 0) {
+      Serial.print("Differential pressure: ");
+      Serial.print(sdp.getDifferentialPressure());
+      Serial.print("Pa | ");
+
+      Serial.print("Temp: ");
+      Serial.print(sdp.getTemperature());
+      Serial.print("C\n");
+  } else {
+      Serial.print("Error in readSample(), ret = ");
+      Serial.println(ret);
+  }
+
+  delay(500);
+}

examples/sdp8xx/sdp8xx.ino

@@ -0,0 +1,40 @@
+#include <Wire.h>
+
+#include <sdpsensor.h>
+
+SDP8XXSensor sdp;
+
+void setup() {
+  Wire.begin();
+  Serial.begin(9600);
+  delay(1000); // let serial console settle
+
+  int ret = sdp.init();
+  if (ret == 0) {
+      Serial.print("init(): success\n");
+  } else {
+      Serial.print("init(): failed, ret = ");
+      Serial.println(ret);
+      while (true) {
+        delay(1000);
+      }
+  }
+}
+
+void loop() {
+  int ret = sdp.readSample();
+  if (ret == 0) {
+      Serial.print("Differential pressure: ");
+      Serial.print(sdp.getDifferentialPressure());
+      Serial.print("Pa | ");
+
+      Serial.print("Temp: ");
+      Serial.print(sdp.getTemperature());
+      Serial.print("C\n");
+  } else {
+      Serial.print("Error in readSample(), ret = ");
+      Serial.println(ret);
+  }
+
+  delay(500);
+}