Whats the best way to communicate two MCUs wirelessly?

Hello Atiom,

In determining the best way to send wirelessly between two controllers, you need to narrow down your choices based on your application.  What is best in one situation may be completely unacceptable in another.

To help you narrow down your choices you should consider:

1.  Range that is required (RFID in mm to WiMax in kilometers)

2.  Environment (Open space - line of site to noisy industrial - through concrete walls)

3.  Size of data to be sent

4.  Single chip solution or simple transceiver.

5.  Topology (Star, Mesh, ...)

6.  Cost of development in terms of software, learning curve and components.

7.  Support for such device(will there be anyone around to help you after you just spent all that money)

8.  Interoperability (Can it talk too my cellphone, tablet...)

9.  Security

10. Power consumption.

The above list is a reasonable guide that should allow you to narrow down your selection.  You can do your research by searching the web or TI wireless product folder.

Thanks,

Hello greenja,

Well,

1. The range should be around 4 meters

2. The enviroment will be an open space

3. Size data will be very small, something like 1Kb/s

4. Single chip or a transceiver, I really don't know whats the trade offs are

5. Since I will be communication between only two MCUs, is there any noticable diference by using one insted of another?

6. I'll need to dig a bit more into that

7. I hope not to spend a lot of money, I want something cheap

8. There is no need for interoperability, just the 2 MCUs

9.  Security is not a major concern

10. Power consuption is a very important point, because the MCUs will be powered by bateries, and so, the wireless devices will be powered by bateries as well.

I would like to know if TI has a device that fits the above listeds topics.

Thank you greenja for your guide. Very helpful.

What do you think about the MSP430 EZ430-RF2500?

http://www.ti.com/tool/ez430-rf2500

If you don't insist on mcu choice and msp430 is good, then TI CC-series radios are for you. Either RF chips or combo with msp430, CC430-series.

Launchpad with RF boosterpack is low-cost way to start playing with TI RF transceivers:

http://www.ti.com/tool/430boost-cc110l

Thanks for letting me know that Ilmars.

But I'll be using the EXP430FR 5739 board. And this board has expansion slots named RF, I was thinking about something that fits that.