S32 Design StudioのトピックRe: How can S32K define a variable in a specified address?

How can S32K define a variable in a specified address?

zhengjianfei — Tue, 06 Mar 2018 09:11:51 GMT

Sometimes we need to define a variable in a specified address,but how to do this?The MCU is S32K144 and IDE is S32DS V2.0. I have tried to use the following method ：1.unsigned char temp_A@0x00. 2.u8 sram[200] __attribute__((at(0x20002000))); ，but it did not work！So dose anyone have any idea about this problem,thanks very much!

Re: How can S32K define a variable in a specified address?

jiri_kral — Tue, 06 Mar 2018 09:40:17 GMT

Hi,

you need to create custom section in linker file and add your variable like this:

__attribute__ ((section(".your_section"))) unsigned char your_variable;

You can look at this thread - https://community.nxp.com/message/971236

Jiri

Re: How can S32K define a variable in a specified address?

zhengjianfei — Wed, 07 Mar 2018 02:52:06 GMT

Hi Jiri，thanks!