Heart rate monitoring system design using FRDM K64F and MIT App Inventor II

Dependencies:   ESP8266 GroveEarbudSensor mbed

Fork of Heart-rate-monitor by Sarada Gajjala

Revision:
0:1358c23ecb2e
Child:
4:df7309612854
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Sep 25 21:35:44 2014 +0000
@@ -0,0 +1,63 @@
+/* Copyright C2014 ARM, MIT License
+ *
+ * Author: Doug Anson (doug.anson@arm.com)
+ *
+ * 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.
+ */
+
+#include "mbed.h"
+
+// Console
+Serial pc(USBTX,USBRX);
+
+// Blinky
+DigitalOut led(LED1);
+
+// Our sensor as an InterruptIn
+InterruptIn sensor(D0);
+
+// Grove Earbud Sensor include
+#include "GroveEarbudSensor.h"
+
+// callback for receiving heartrate values
+void heartrateCallback(float heartrate,void *data) {
+    pc.printf("Callback: heartrate = %.1f\r\n",heartrate);
+}
+
+int main()
+{   
+    // announce
+    pc.printf("Grove Earbud Sensor Example v1.0.0\r\n");
+    
+    // allocate the earbud sensor
+    pc.printf("Allocating earbud sensor instance...\r\n");
+    GroveEarbudSensor earbud(&sensor); 
+    
+    // register our callback function
+    pc.printf("registering callback...\r\n");
+    earbud.registerCallback(heartrateCallback);
+    
+    // begin main loop
+    pc.printf("Beginning main loop...\r\n");
+    while (true) {
+        // blink... 
+        led = !led; 
+        wait(0.5);
+        
+        // we can also call directly 
+        //pc.printf("Direct: heartrate = %.1f\r\n",earbud.getHeartRate());
+    }
+}
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