SMAC @ 433MHz

[mircopizzichini]

Hi

I'm developing a MRB-KW01 application at 433 MHz, but the SMAC source code provided with "radio utility GUI" is an application example only for 868 and 960 MHz.

Is there any source code for 433 MHz band? Or maybe I've just to change manually radio parameters?

Thank you

[CesarM · Accepted solution]

Hello mircopizzichini,

You are correct in the fact that SMAC doesn't currently provide support for 433MHz band.

What you can do is the following:

In RadioUtility.h set the default settings that you need to run @ 433MHz.

You need to calculate the Frf registers value for the 433MHz.

The formula is:

Frf Register= Frf/Fstep

where Fstep=FXosc/2^19

current value:

#define gDefaultRfFreq_c ( 0xE4C000 )                    //rf freq 915 MHz (US).

desired value for 433MHz:

#define gDefaultRfFreq_c ( 0x6C4000 )                    //rf freq 433 MHz.

If you need to change other parameters such as Fdev, BitRate, and so on you can do it in RadioUtility.h as well.