Hi Bernd, You can use 320KB only if you don't need to use WiFi and BLE.
The memory is used but the WiFi/BLE driver! Do you remember the old days where your video card used to eat your main memory and you should define in the BIOS how much memory the video card will use? Same thing here! ;-) Best Regards, Alan On Thu, Apr 25, 2024 at 8:59 PM Bernd Walter <ti...@cicely7.cicely.de> wrote: > The original ESP32 is said to have 320k RAM. > All board configs have the following: > CONFIG_RAM_SIZE=114688 > > Are RAM sections added later in the startup process or is there another > reason? > > -- > B.Walter <be...@bwct.de> https://www.bwct.de > Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm. >