krvarma / Blemini_sparkcore

Spark Core, BLE Mini and SensorTag demo

This is a sample application Spark Core and BLE Mini in BLE Central role. In BLE there are two mode peripheral and central mode. A peripheral device has data that can be used by other devices. A central uses this data and and perform various tasks. The BLE Mini from RedBearLab can act as peripheral and central. To act as central we need to update the BLE Mini a special firmware provided by RedBearLab. For this demo application I am using HCI_UART_57600bps_20130502 firmware. RedBearLab provides detailed instructions to update the firmware, you can find the information here (see the how to upgrade section.

This sample is heavily based on the python sample SensorTag_Central_HCI.py. For this I updated the firmware with the above mentioned file, taken the python sample as the reference and ported to Spark Core.

The purpose of this sample is just to demonstrate how to use the BLE Mini in Central mode and start device discovery and then connect and wait for the device events. This sample uses HCI commands to achieve these. Basically this application connect to SensorTag and subscribe for button press notification. Following are the steps to start BLE Mini in Central mode and connect to the sensor.

1. Initialize the HCI
2. Once it is initialized, start device discovery
3. If a device is found, establish connection
4. Once the connection is established, enable the button press notification and wait for the events

Screenshots

Demo Video

https://www.youtube.com/watch?v=p51XCAk1nNU