topic Re: Kinetic M - Bare metal ADC example code linker errors in Kinetis Microcontrollers

Kinetic M - Bare metal ADC example code linker errors

Jaya — Tue, 30 Aug 2016 13:42:59 GMT

I tried building IAR project for ADC example from following bare metal driver samples.

C:\Freescale\KM128SWDRV_R3_0_0\build\iar_6_50\projects\adc_test

I got following linker errors. I am new to Kinetics, any help?

Error[Lp049]: there was no reference to __iar_data_init3, but it is needed to
initialize section .bss (adc.o #8)
Error[Lp048]: the init table "Table" is needed to initialize some variables,
but there are no references to it

Thanks

Jayaraman

Re: Kinetic M - Bare metal ADC example code linker errors

kerryzhou — Thu, 01 Sep 2016 02:45:23 GMT

Hi Jayaraman,

Could you tell me where you get the KM128SWDRV example? And what the chip you are using? Tell me the part number.

In fact, you can use our KSDK2.0 code for KM34, you can download KSDK2.0 code from this link:

Welcome to Kinetis Expert | Kinetis Expert

Choose the KM34 chip, and generate the according KSDK2.0.

Wish it helps you!

If you still have question, please let me know!

Have a great day,
Jingjing

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Re: Kinetic M - Bare metal ADC example code linker errors

MarMi — Thu, 01 Sep 2016 05:31:38 GMT

Hi Jayaraman,

seeing this report, I guess that you're using IAR 7.50.x or higher revision where the linker started to emit an error when some initialization has been requested, but the program contains no reference to the initialization routine, or to the init table . You can get rid of this error by replacing this line in linker file: do not initialize { section .noinit }; by the following one: do not initialize { zeroinit }.

Other option is to use a newer version of bare metal drivers (KMSWDRVAPIRM_SW.zip R 4.1.5) which can be downloaded from MKM34 Documentation Page.

Kind regards,

Martin M.

Re: Kinetic M - Bare metal ADC example code linker errors

Jaya — Thu, 15 Sep 2016 12:10:39 GMT

Thanks Jingjing. your idea helps me a lot.

Re: Kinetic M - Bare metal ADC example code linker errors

Jaya — Fri, 16 Sep 2016 11:37:38 GMT

Hi Martin, yes, i am using IAR 7.5 and the change you suggested works. thanks.

Re: Kinetic M - Bare metal ADC example code linker errors

terry_lv — Wed, 19 Oct 2016 04:19:32 GMT

Hi,

It is suggested by IAR to add:

do not initialize {readwrite }; to the icf link file.

So the icf file will look like:

...

do not initialize { section .noinit };

do not initialize { readwrite };

...

Thanks!

Regards

Terry