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Forum Index : Microcontroller and PC projects : Multiple SPI Devices on the SPI BUS

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atmega8

Guru

Joined: 19/11/2013
Location: Germany
Posts: 723

Posted: 01:35am 24 Feb 2014

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Hallo,

how can we connect / communicate with multiple SPI devices on the one SPI Bus of the MMITE?

Any suggestions?

Dietmar

MicroBlocks

Guru

Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 02:12am 24 Feb 2014

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SPI is a bus :) and you enable each device on the bus with a single GPIO.

Microblocks. Build with logic.

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 939

Posted: 03:13am 24 Feb 2014

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...or with two or three GPIOs and a Muxer.
Another way is to generate the enable-signals with 74HC595D.
(http://www.mikrocontroller.net/articles/AVR-Tutorial:_Schie beregister)

Frank

atmega8

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Joined: 19/11/2013
Location: Germany
Posts: 723

Posted: 05:10am 24 Feb 2014

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Dam'n , of course IS IT a bus, but i didn't recog. that the Devices have a chipselect, SPI enable or so...

Ok, so it is an easy Job ;-)..

THX

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