[ECOS] SPI chip select for cortexm

[ECOS] SPI chip select for cortexm

[jayant biswas]

Hello!

I am using a STM3210E eval board
(http://www.st.com/stonline/books/pdf/docs/14220.pdf) and have
successfully configured ecos to use the SPI interface. I can run the
loopback test, which confirms its functionality. I would like to use
the SPI interface (connected to the SPI flash on the board) to
communicate with a programmable potentiometer (AD8400) that I have
mounted on the QST connector of the evaluation board. I have chosen
the pin PA8 for CSn. How can I make the SPI driver in ecos to use this
pin as the chip select?

Thank you in advance for your help.

Jayant

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

Re: [ECOS] SPI chip select for cortexm

[Ilija Stanislevik]

On 05/31/2011 11:45 AM, jayant biswas wrote:
> Hello!
>
> I am using a STM3210E eval board
> (http://www.st.com/stonline/books/pdf/docs/14220.pdf) and have
> successfully configured ecos to use the SPI interface. I can run the
> loopback test, which confirms its functionality. I would like to use
> the SPI interface (connected to the SPI flash on the board) to
> communicate with a programmable potentiometer (AD8400) that I have
> mounted on the QST connector of the evaluation board. I have chosen
> the pin PA8 for CSn. How can I make the SPI driver in ecos to use this
> pin as the chip select?
>
> Thank you in advance for your help.
>
> Jayant
>
Set CYGHWR_DEVS_SPI_CORTEXM_STM32_BUS1_CS_GPIOS to 8 if you are using
SPI1. For SPI2 or SPI3 set CYGHWR_DEVS_SPI_CORTEXM_STM32_BUS2_CS_GPIOS
or CYGHWR_DEVS_SPI_CORTEXM_STM32_BUS3_CS_GPIOS accordingly.

Regards,

-- 

Ilija Stanislevik
SIvA doo
ul. Mladinska 43 lok. 6
p.f. 53
MK-2400 Strumica
Macedonia

www.siva.mk <http://www.siva.mk>


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss