CC2640: How many SPI interfaces available in Sensor controller

Hi Lakshmikanth,

That's actually the beauty of SPI - you can have all the sensors use the same interface

Ideally, you would use the chip select line of each sensor to indicate which sensor you are reading/writing from.

Regards,
Rebel

Hi Rebel,

Thanks for your response.  

So, there is only one bus available in sensor controller? What if I need dedicated SPI buses for two different sensors? 

Regards

Lakshmikanth. 

Lakshmikanth,

Actually, due to it being bit banged, you can have as many as you want, as long as you have IOs.

That's not a bad approach either - you could have one sensor controller task bit banging SPI for each.

Regards,
Rebel

Hi Rebel,

That's great. Thanks for explanation. This is what I am looking for.

Regards
Lakshmikanth.

No worries,

Just remember, all sensor controller tasks execute one at a time - in other words, you'd need to allow one SPI transaction to complete before another one begins.

(And of course IOs)

Regards,
Rebel

Hi Rebel,

Very useful information.  Any inter task communication is possible without main CPU intervention? 

Regards

Lakshmikanth. 

Hi Lakshmikanth,

As far as I know, there isn't unfortunately.

Regards,
Rebel