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Hey Vicentizio,
An Android app can be found here http://www.ti.com/tool/sensortag-sw. It pairs with our sensor tag development kit. This should give you a decent starting point for your app development.
It sounds like you are going to use the CC2540/1 as a network processor. We have a HostTestRelease project in our BLE Stack (http://www.ti.com/tool/ble-stack) that configures the device as a network processor and allows you to control it via HCI commands over a serial bus. I would start there for the device firmware.
As far as which kit to look into it depends on what pin outs you need. Take a look at the dev kits on this page http://www.ti.com/ww/en/analog/bluetooth/index.htm?DCMP=wtbu_connectivity&HQS=Other+PR+bluetoothlowenergy-bl6450-pr. There are a decent number to choose from with different prices/pinouts available.
-Matt
Thanks Matt
The Android app is only for the SensorTag SDK which is not appropriate for my application. I need to exchange data and voice between a smartphone and a remote device, so the SDK has to have a connector to receive/transmit data. I looked at CC2540DK but that has no smartphone app and looks quite complex: the CC2540EM plugs into a SmartRF05EB.
Vincent
Hey Vincent,
What kind of data throughput are you hoping to achieve with BLE in order to send voice? The max data throughput for BLE is in the kbps range. http://e2e.ti.com/support/wireless_connectivity/f/538/t/196549.aspx
You may need to check out our CC256x family of devices that support classic Bluetooth. They have a separate forum here, http://e2e.ti.com/support/wireless_connectivity/f/660.aspx, that may give info that better fits your end application.
-Matt