How much ram is available on the micro to allocate a buffer?

[JTLGE]

Hi,

I'm using the SWIN SensorTile Wireless Industrial Node development board that has an Ultra-low-power ARM Cortex-M4 MCU at 120 MHz with FPU, 2048 kbytes Flash memory (STM32L4R9).

On this micro I am using a freertos middleware that I use to manage tasks.

How can I know how much ram I have available to make a buffer in which to allocate data that I read from an accelerometer and then read the buffer and forward it on a serial line?

thanks in advance

[MM..1]

R9 have 640kB RAM, then you can arange buffers in this range minus reserved heap for freertos...

But memory is in some regions with or without DMA access, then check datasheet.