https://community.nxp.com/t5/S32K/S32K312-standby-ram-initialized-data/m-p/1889138#M36687 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/187044">@kjy106906</a>&nbsp;</P> <P>the linker file and startup code is prepared to use standby RAM feature which can keep the content of RAM during standby mode. So, it makes sense to not include initialized data to this section. The linker file explicitly mentions that:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lukaszadrapa_0-1718686528499.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/284565i3339239E35810DB5/image-size/medium?v=v2&amp;px=400" role="button" title="lukaszadrapa_0-1718686528499.png" alt="lukaszadrapa_0-1718686528499.png" /></span></P> <P>And you can find in startup code that this RAM is initialized only after POR:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lukaszadrapa_1-1718686553370.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/284566i893731F86453AC7E/image-size/medium?v=v2&amp;px=400" role="button" title="lukaszadrapa_1-1718686553370.png" alt="lukaszadrapa_1-1718686553370.png" /></span></P> <P>Of course, if you don't want to use this feature, you can update the linker file and startup code as needed.</P> <P>Regards,</P> <P>Lukas</P> <P>&nbsp;</P> Tue, 18 Jun 2024 04:56:44 GMT lukaszadrapa 2024-06-18T04:56:44Z https://community.nxp.com/t5/S32K/S32K312-standby-ram-initialized-data/m-p/1887660#M36599 <P>I am using S32K312 (RTD 3.0.0 P07).<BR />In the ghs\linker_flash_s32k312.ld file<BR />The Standby_data section is commented to include only uninitialized data.<BR />The standby_bss section is not visible.<BR />Can't initialized data be assigned to standby RAM?</P> Fri, 14 Jun 2024 07:48:50 GMT https://community.nxp.com/t5/S32K/S32K312-standby-ram-initialized-data/m-p/1887660#M36599 kjy106906 2024-06-14T07:48:50Z https://community.nxp.com/t5/S32K/S32K312-standby-ram-initialized-data/m-p/1889138#M36687 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/187044">@kjy106906</a>&nbsp;</P> <P>the linker file and startup code is prepared to use standby RAM feature which can keep the content of RAM during standby mode. So, it makes sense to not include initialized data to this section. The linker file explicitly mentions that:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lukaszadrapa_0-1718686528499.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/284565i3339239E35810DB5/image-size/medium?v=v2&amp;px=400" role="button" title="lukaszadrapa_0-1718686528499.png" alt="lukaszadrapa_0-1718686528499.png" /></span></P> <P>And you can find in startup code that this RAM is initialized only after POR:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="lukaszadrapa_1-1718686553370.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/284566i893731F86453AC7E/image-size/medium?v=v2&amp;px=400" role="button" title="lukaszadrapa_1-1718686553370.png" alt="lukaszadrapa_1-1718686553370.png" /></span></P> <P>Of course, if you don't want to use this feature, you can update the linker file and startup code as needed.</P> <P>Regards,</P> <P>Lukas</P> <P>&nbsp;</P> Tue, 18 Jun 2024 04:56:44 GMT https://community.nxp.com/t5/S32K/S32K312-standby-ram-initialized-data/m-p/1889138#M36687 lukaszadrapa 2024-06-18T04:56:44Z