What is the difference between developing BLE custom GATT profiles and Bluetooth classic SPP?

[helpme]

I am new to BLE but have been reading up about it. My understanding is that developing BLE custom GATT profiles is similar to SPP but the difference is that BLE is extremely low power. Is this understanding correct? What are the other differences?

[MartinBL]

Hi

I'm not sure if I understand your question correctly, but Bluetooth Low Energy (also known as BLE, Bluetooth Smart or Bluetooth 4.x) can be considered a completely new technology, very different from previous Bluetooth versions. As you say, BLE is designed for very low power consumption. The Serial Port Profile (SPP) is a profile based on BR/EDR (Basic Rate/Enhanced Data Rate introduced in Bluetooth V2.0). I'm not sure if there is a BLE equivalent of the profile out there, but you can check out the "UART/Serial Port Emulation over BLE" example in our SDK.

[helpme]

Thanks for the answer. The similarity that I have in mind is that both SPP and BLE Gatt are good for sending data around. Sending sensor data would be a good application. I was wondering in what ways are the data characteristics that can be carried by BLE different from SPP.