working of cmsis???

[renu]

Hi, i am new to Bluetooth technology and have doubts related to cmsis

1. what is cmsis?

2. how cmsis can be used for flow of data from

   1. gpio -> processor ->BLE(blutooth low energy) 2)BLE(blutooth low energy) -> processor ->gpio

3. how much memory required for RTOS?

can anyone please share the information regrading this

Thanks

[John]

Well, as I understand it CMSIS is the Cortex Microcontroller Software Interface Standard and really isn't relate to Bluetooth at all. The folks at ARM have a nice webpage that can get you started:

link text

It just ensures that all ARM Cortex processors present the same interfaces for ease of code portability.

Memory required for RTOS? You have to find that out on your own. It will depend on what RTOS you choose.