topic Re: SPI read in Kinetis Microcontrollers

SPI read

pietrodicastri — Fri, 19 Jun 2015 14:18:21 GMT

Good morning

I use the SPI0, without any interrupt, I have this effect.

It will never go out of the while loop, even after a clear.

Is there an explanation ????

DSPI_HAL_ClearStatusFlag( baseAddr, kDspiRxFifoDrainRequest );

while( DSPI_HAL_GetStatusFlag( baseAddr, kDspiRxFifoDrainRequest ) )

{

uint32_t b = DSPI_HAL_ReadData( baseAddr );

}

Thank You

Pietro

Re: SPI read

adriancano — Fri, 19 Jun 2015 15:04:51 GMT

Hi,

I recommend you to have a look at the examples provided in the KSDK folder. In the path C:\Freescale\KSDK_1.2.0\examples\frdmk64f\driver_examples\dspi\dspi_polling\master

you will find an example for the SPI usage.

Hope this information can help you

Best Regards,
Adrian Sanchez Cano
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Re: SPI read

pietrodicastri — Wed, 24 Jun 2015 05:58:07 GMT

Hello

Ok , the suggestion is qualified. The example outlines it is necessary to read and clear the flag. the flag will not definitely clear until everything is sucked out.

I think a short suggestion like this could be helpful, we work stressed for delivering results, not always we have time to read carefully the datasheet or test in a good order.

Thank You

Pietro