Diff: main.cpp

Revision:

0:9ff19f3965fb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Sep 25 03:23:19 2010 +0000
@@ -0,0 +1,46 @@
+// Author: kasturir@ucla.edu (Kasturi Rangan Raghavan)
+// \file
+// QRSDet library for QRS delays
+// Very naive and basic implementation to demonstrate
+// QRS code ported from QRSDet.
+//
+// Note:
+//   Change both the wait_us and qrsdet::SAMPLE_RATE (in qrsdet-params.h)
+//   to adjust to different sampling rates. Currently set up for 125Hz
+// Also, the offset/scale for reading ADC input may have to be adjusted
+//
+// Note2:
+// Since function are not pure, local variables stored as static, 
+// That means the filter functions like deriv1, etc should be left alone.
+
+#include "mbed.h"
+#include "qrsdet2-inl.h"
+#include "qrsfilt-inl.h"
+
+DigitalOut peak(LED1);
+DigitalOut time_out(LED4);
+DigitalOut time_out1(p18);
+PwmOut bridge_out(LED2);
+
+AnalogIn ecg_in(p20);
+float float_val;
+int int_val;
+int delay; // return of QRSDet
+int main() {
+  time_out = 1;
+    //qrsdet::QRSDet(0, 1);
+    qrsdet::deriv1(0, 1);
+    peak = 1;
+    while(1) {
+        float_val = ecg_in.read();
+        int_val = float_val*128;
+        delay = qrsdet::QRSDet(int_val, 0);
+        if ( delay > 0) {
+            peak = !peak;
+        }
+        wait_us(8000); // 125Hz
+        bridge_out = float_val;
+        time_out = !time_out;
+        time_out1 = !time_out1;
+    }
+}