topic Re: Spi on MKE04 in Kinetis Microcontrollers

Spi on MKE04

paolocolombo — Mon, 30 Mar 2015 14:36:44 GMT

Hi to all,

I'm developing a software with MKE04 and Codewarrior 10.6 with PE.

I have to use SPI0 as MASTER without SS pin, but the PE bean don't let me do it, becasure it requres me always the SS pin.

I discovered that PE sets always the MODFEN bit. This is a problem for me, because I use SS pin for other.

Is there an update bean that allows me to do what I want ?

Thanks to all.

Paolo

Re: Spi on MKE04

jeremyzhou — Tue, 31 Mar 2015 01:30:00 GMT

Hi Paolo,

Thank you very much for your focus on Freescale Kinetis product. I'm glad to provide service for you.

I was wondering if you can tell me which component you implemented, then I will try it for check.

I'm looking forward to your reply.
Have a great day,
Ping

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Re: Spi on MKE04

paolocolombo — Tue, 31 Mar 2015 07:01:42 GMT

Thank you for your interest!

I'm developing with Codewarrior 10.6, microcontroller Kinetis MKE04Z128VLH4, and I use SPI0 with the beans SyncroMaster, or InitSPI.

As you can see, the "Slave Select Pin" option is gray and can not be disabled,

In configuration register window, I see MODFEN bit is set, and I don't know how to do to clear them.

With MODFEN set, pin PT3/SPI0_PCS, is used, but clearing MODFEN it's possible use PTE3/SPI0_PCS like GPIO.

Thanks again, and best regards.

Paolo Colombo

Re: Spi on MKE04

jeremyzhou — Wed, 01 Apr 2015 08:48:18 GMT

Hi Paolo,

I've encountered the same issue when I used the CW10.6 and KDS v2.0.

I think you need to modify the generated code manually if you want disable the SS pin.

Wish it helps.
Have a great day,

Ping

Re: Spi on MKE04

abdullahkahrama — Fri, 22 May 2015 05:12:09 GMT

Hello Ping,

I am having the same issue with KE02 and CW 10.6. SPIMaster_LDD sets the MODFEN bit and I cannot make Processor Expert behave differently. Here is the code in "SM1.c" file generated for SPIMaster_LDD by Processor Expert:

SPI0_C2 = SPI_C2_MODFEN_MASK;        /* Set configuration register */

Could you report this issue to Processor Expert team? Although I am hopeless since they are ditching support for CodeWarrior for Kinetis series..

Re: Spi on MKE04

jeremyzhou — Mon, 25 May 2015 10:07:10 GMT

Hi Adbullah Kahraman,

Thanks for your reminder, I'll report the bug to the KDS develop team later.
Have a great day,
Ping

Re: Spi on MKE04

mstroven — Sun, 08 Nov 2015 10:34:57 GMT

Hello,

Any update on this bug? I ran into the same thing about a week ago, but only just today discovered this post.