.heap (NOLOAD):
    {
        __uvisor_heap_start = .;
        __end__ = .;
        end = __end__;
        . += HEAP_SIZE;
        __HeapLimit = .;
        __uvisor_heap_end = .;
    } > SDRAM

Hello all ! Can someone provide me some information on how to use the SDRAM as heap for use with mbed rtx. Changing the heap location in linker-script seems not valid. I get the following link error message: c:/sysgcc/arm-eabi/bin/../lib/gcc/arm-eabi/6.2.0/../../../../arm-eabi/bin/ld.exe: Region RAM overflowed with stack and heap Target: STM32F429I-DISC1 IDE: VisualStudio w/ VisualGDB example project: LEDBlink w/ mbed from VisualGDB Wizzard I setup a new memory section: SDRAM (rwx) : ORIGIN = 0xD0000000, LENGTH = 8M and simply moved the heap section to SDRAM: <<code>> .heap (NOLOAD): { __uvisor_heap_start = .; __end__ = .; end = __end__; . += HEAP_SIZE; __HeapLimit = .; __uvisor_heap_end = .; } > SDRAM <</code>> I set the preprocessor defines DATA_IN_ExtSDRAM and STM32F429xx Seems that rtx is fixed to a certain memory-structure? Another thing I stumbled upon is the initialization of the SDRAM. In the provided system_stm32f4xx.x they initialize GPIO H and I for use wth SDRAM. They do not exist on the STM32F429I-DISC1. Maybe someone can give me a hint? Thanks in advance. Dirk

Meanwhile I corrected the GPIO initialization according to the schematic of the STM32F429I-DISC1.

I have the same problem。

Did you solve it?