dsm501

diff --git a/DSM501/DSM501.ino b/DSM501/DSM501.ino
new file mode 100644 (file)
index 0000000..fc0a062
--- /dev/null
+++ b/DSM501/DSM501.ino
@@ -0,0 +1,94 @@
+/**
+The MIT License (MIT)
+
+Copyright (c) 2015 richardhmm
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+/**
+   connect the sensor as follows :
+          Pin 2 of dust sensor PM1.0      -> Digital 2
+         Pin 3 of dust sensor          -> +5V 
+         Pin 4 of dust sensor PM2.5    -> Digital 3
+         Pin 5 of dust sensor          -> Ground
+  Datasheet: http://www.samyoungsnc.com/products/3-1%20Specification%20DSM501.pdf
+*/
+#include "DSM501.h"
+
+// for nano, only pins 2, 3 are interrupt capable
+// https://www.arduino.cc/reference/en/language/functions/external-interrupts/attachinterrupt/
+
+#define DSM501_PM1_0    2
+#define DSM501_PM2_5    3
+#define SAMPLE_TIME     30 // 30? seconds
+
+DSM501 dsm501;
+
+void setup()
+{
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, HIGH);
+  
+  Serial.begin(115200);        //for output information
+
+  // Initialize DSM501
+  //           PM1.0 pin     PM2.5 pin     sampling duration in seconds
+  dsm501.begin(DSM501_PM1_0, DSM501_PM2_5, SAMPLE_TIME); // collect sensor data every SAMPLE_TIME
+
+  
+  // wait 60s for DSM501 to warm up
+/*
+  for (int i = 1; i <= 60; i++)
+  {
+    delay(1000); // 1s
+    Serial.print(i);
+    Serial.println(" s (wait 60s for DSM501 to warm up)");
+  }
+*/
+  //Serial.println("# setup");  
+  digitalWrite(LED_BUILTIN, LOW);
+
+}
+
+void loop()
+{
+  if (dsm501.update())
+  { 
+
+         digitalWrite(LED_BUILTIN, HIGH);
+         
+         // get PM density of particles over 1.0 μm
+         Serial.print("PM10=");
+         Serial.print(dsm501.getParticleCount(0));
+         Serial.print(" ");
+         
+         // get PM density of particles over 2.5 μm
+         Serial.print("PM25=");
+         Serial.print(dsm501.getParticleCount(1));
+         Serial.print(" ");
+
+         Serial.print("mg_m3=");
+          float concentration = dsm501.getConcentration();
+         Serial.print(concentration);
+
+          Serial.println();
+
+         digitalWrite(LED_BUILTIN, LOW);
+  } 
+}