https://devzone.nordicsemi.com/f/nordic-q-a/35735/not-able-to-compile-sdk12-3-0-for-nrf51822_xxaa-16k-ram-256k-flash-gcc-compileI have changed the RAM (rwx) : ORIGIN = 0x20001fe8, LENGTH = 0x2018 in ble_app_buttonless_gcc_nrf51.ld. Build, it appears to me /usr/local/gcc-arm-none-eabi-4_9-2015q3/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld: region RAM overfloweden-USTelligent Community 13Tue, 26 Jun 2018 07:25:26 GMThttps://devzone.nordicsemi.com/thread/137586?ContentTypeID=1Tue, 26 Jun 2018 07:25:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3cf75f12-b5fe-4d88-8559-1c8a41f74619alivexiaoluo<p>It works well.Thanks again!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137502?ContentTypeID=1Mon, 25 Jun 2018 15:23:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b9565305-8b86-4f3f-95d6-66a71cfae79calivexiaoluo<p>I will try it tomorrow and give you the feedback.Thanks！</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137479?ContentTypeID=1Mon, 25 Jun 2018 14:25:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6173ab7b-8a66-4cc3-9d77-0b8cbd96d8dcH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>You can remove the HEAP by adding this in your Makefile:</p> <p>ASMFLAGS += -D__HEAP_SIZE=0</p> <p>&nbsp;</p> <p>Note: you&#39;ll need to go back to your original LENGTH=0x2018 in order for your RAM to not go out-of-bounds.</p> <p>&nbsp;</p> <p>Kind regards,.</p> <p>Håkon</p><div style="clear:both;"></div>