Diff: main.cpp

Revision:

0:acd3444161e9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 28 04:40:24 2018 +0000
@@ -0,0 +1,86 @@
+#include "mbed.h"
+
+#define INTERRUPT_MODE
+//#define DIGITAL_IN_MODE
+
+DigitalOut led(D10);
+
+#ifdef DIGITAL_IN_MODE
+//DigitalOut myled(LED1);
+DigitalIn  mypin(D9);
+#endif
+
+#ifdef INTERRUPT_MODE
+InterruptIn hr(D6);
+Ticker  flipper;
+#endif
+
+int hr_cnt = 0; 
+
+void flip()
+{
+    printf("Beat - int\n");
+    led = !led;
+    hr_cnt++;
+}
+
+void calculate(){
+    hr_cnt = hr_cnt * 6;
+    printf("Heartrate %d \n", hr_cnt);
+    hr_cnt = 0;
+}
+
+int read, old_read;
+
+int main()
+{
+#ifdef INTERRUPT_MODE
+    hr.rise(&flip);
+    flipper.attach(callback(calculate),10); // setup flipper to call flip after 2 seconds
+#endif
+
+
+#ifdef DIGITAL_IN_MODE
+    if(mypin.is_connected()) {
+        printf("mypin is connected and initialized! \n\r");
+    }
+
+    // Optional: set mode as PullUp/PullDown/PullNone/OpenDrain
+    mypin.mode(PullDown);
+
+    read = mypin.read();
+
+    //printf("beat %d \n", read);
+
+    printf("Waiting for heart beat...\n\n");
+
+    while (!mypin.read()) {};
+    printf("Heart beat detected!\n");
+#endif
+
+    while(1) {
+
+
+#ifdef DIGITAL_IN_MODE
+
+        read = mypin.read();
+        if (read && (old_read != read)) {
+            printf("Beat\n");
+        }
+
+        old_read = read;
+#endif
+        //printf("beat %d \n", read);
+        //printf("hello \n\n");
+
+        //led.write(0);
+        //wait(1.0);
+        //led.write(1);
+        //wait(1.0);
+//
+//        myled = 1; // LED is ON
+//        wait(0.2); // 200 ms
+//        myled = 0; // LED is OFF
+//        wait(1.0); // 1 sec
+    }
+}