topic float printing error in PE in Kinetis Design Studio

float printing error in PE

syedidris — Mon, 28 Dec 2015 10:34:21 GMT

Hi ,

We are working on KL03 processor (with KDS 3.0.0). We learnt how to make processor expert code and just trying to make simple hello_world printing code. Its working fine but float value is not printing so we change the properties of code as per screenshot, then it is showing some errors,

Our project code is as per the attachment.

Please guide how to print float value in PE code.

Original Attachment has been moved to: print.zip

Re: float printing error in PE

Alice_Yang — Tue, 29 Dec 2015 02:22:41 GMT

Hello syed,

To use printf() with floating point, the option "-u _printf_float" needs to be added to the linker options,

about the detail information please refer to here :

printf() and scanf() with GNU ARM Libraries | MCU on Eclipse

Hope it helps

Alice

Re: float printing error in PE

syedidris — Tue, 29 Dec 2015 05:40:08 GMT

Hi Alice,

thanks for your reply.

I added "-u _printf_float" in properties of our project, but it's not working as you can see in my project code.

Re: float printing error in PE

ZhangJennie — Tue, 05 Jan 2016 07:13:31 GMT

I ever made video of how to how to use printf to print floating value in KDS3.0

see attached.

can this help you?

Have a great day,
Jennie Zhang

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Re: float printing error in PE

syedidris — Wed, 06 Jan 2016 05:09:12 GMT

Zhang,

we tried your method but still It's giving the error.

Re: float printing error in PE

syedidris — Thu, 07 Jan 2016 04:59:33 GMT

DavidS plz, can you suggest any solution?

Re: float printing error in PE

DavidS — Thu, 07 Jan 2016 21:17:51 GMT

Hi Syed,

Something was not right with your project and I couldn't easily get it working and am short on time.

Attached is my FRDM-KL03 KDS_3.0+KSDK_1.3+PE and setup to do floating point.

Please review the project Properties and code to how I have it working.

Regards,

David

Re: float printing error in PE

ZhangJennie — Fri, 08 Jan 2016 06:58:44 GMT

David's demo is great. just for supplement, with PE+KSDK, to print floating number, make sure to have floating enabled in preprocessor.

Have a great day,
Jennie Zhang

Re: float printing error in PE

syedidris — Mon, 11 Jan 2016 06:00:31 GMT

Thanks to DavidS and ZhangJennie

Now its working,:smileyhappy: