CubeMx, FreeRTOS, LwIP and MBEDTLS - mbedtls_calloc fails to allocate - what to check?

[bully]

Hello,

I've generated simple SSL Client example from CubeMX using FreeRTOS, MBED TLS and LwIP components. I'd like to connect to SSL server (test server present in CubeF4 package).

I have pretty similar default settings for these components from CubeMX. Obviously I don't have memory available, or maybe something is wrong with settings and dynamic allocation is not possible.

This part of code fails (it tries to allocate 935 bytes for certificate parsing :

if( ( buf = mbedtls_calloc( 1, len ) ) == NULL )
        return( MBEDTLS_ERR_PEM_ALLOC_FAILED );

Can anyone please help, what settings to check or how to analyze this problem correctly to get to the solution ?

Thanks in advance,

regards,

Bully.

[bully]

In such combination of components it seems that default settings for dynamic allocation of objects in MBEDTLS are not working out of the box.

You need to decide and setup a proper dynamic allocation strategy. I've solved this problem by using MBEDTLS_MEMORY_BUFFER_ALLOC_C way.

[paulrbryson]

Could you elaborate on the solution you found?

Is MBEDTLS_MEMORY_BUFFER_ALLOC_C set-able from the STM32CubeIde? If so, I haven't been able to find it.

or do I have to set it manually in a header file?

What else do I have to do to make this work?