Problem with SPI functions in IAR Kickstart for KE02Z FRDM board.

davetelling — Thu, 12 Feb 2015 21:01:33 GMT

I was working with the SPI on a FRDM-KE02Z board, and was modifying the SPI_Master_Poll demo workspace by changing the clock polarity and phase bits. There is a line in the app code:

sSPIConfig.sSettings.bClkPhase1

= 1;

This allows (or should allow) one to change the clock phasing as desired. However, I found that if I set that parameter to '0' (zero), the clock phase did not change. In looking through the various driver files, I found this, which is used to determine the level to set that particular bit:

	if( pConfig->sSettings.bClkPhase1)
	{
	SPI_SetClockPhase(pSPI,1);
	}

Since the phase bit comes out of reset as a '1', commanding a '0' will never happen, because the "if" statement only does something if the commanded bit is true (or set to '1'). To fix this, I just added a following "else" options:

else

{

SPI_SetClockPhase(sSPI,0);

}

This resolved the problem. However, I noticed other, similar bit test areas with the same issue, so those need to fixed, also.

Re: Problem with SPI functions in IAR Kickstart for KE02Z FRDM board.

Hui_Ma — Fri, 13 Feb 2015 06:03:09 GMT

Hi Dave,

Thank you for the info.

That should be the KE02 SPI module driver software issue.

I had reported this issue to related KE product engineer and it will be fixed at next released version.

Thanks again.

Have a great day,
best regards,

Ma Hui

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Kinetis MicrocontrollersのトピックRe: Problem with SPI functions in IAR Kickstart for KE02Z FRDM board.

Problem with SPI functions in IAR Kickstart for KE02Z FRDM board.

Re: Problem with SPI functions in IAR Kickstart for KE02Z FRDM board.