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: main.cpp

Revision:
3:f530ca03e014
Parent:
2:3cd654f42efa
Child:
4:b95d3432a495
diff -r 3cd654f42efa -r f530ca03e014 main.cpp
--- a/main.cpp	Mon Jul 27 06:53:46 2015 +0000
+++ b/main.cpp	Thu Jan 07 02:43:53 2016 +0000
@@ -71,11 +71,11 @@
 
 
 
-void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
 {
     //pc.printf("Disconnected \r\n");
     //pc.printf("Restart advertising \r\n");
-    ble.startAdvertising();
+    ble.gap().startAdvertising();
 }
 
 void WrittenHandler(const GattWriteCallbackParams *Handler)