Rex Ching / Mbed 2 deprecated MedtricsIOECG

ECG data acquisition with Analog device frontend and Redbear nano BLE

Dependencies:   BLE_API mbed nRF51822

Fork of BLENano_SimpleControls by RedBearLab

Reference Design

2 channel EKG with Redbear BLE reference and Analog Device amplifier to generate RAW EKG data fed into Medtrics MaaS service . Medtrics API can consumer raw input with given parameters of ADC sample frequency and scaling factor

Specification

  • Application Processor: nRF51822/BLE , Analog frontend: AD8232 /
  • Input Analog Voltage = 3.3V
  • 10 bit ADC input range = (0-1023) or scaling factor= 3.22mV/unit (this is ADC resolution)
  • ADC sample frequency (BLE pull rate) = 250Hz (4ms per sample)

/media/uploads/pkweitai/ble_-3-.jpg Reference IOS and Android app will be online soon!

Diff: Servo.h

Revision:
0:be2e4095513a
Child:
1:81a97eb70d3d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Servo.h	Fri Oct 31 09:47:34 2014 +0000
@@ -0,0 +1,21 @@
+#ifndef _SERVO_H
+#define _SERVO_H
+
+#include "mbed.h"
+
+class Servo
+{
+public:
+    Servo(PinName pin);
+    ~Servo(void);
+    
+    void write(unsigned char degree);
+
+private:
+    void convert(unsigned char degree);
+    
+    PwmOut _servo;
+    unsigned int pulse;
+};
+
+#endif
\ No newline at end of file