Yes, Abdelatif is right, I think only Bluetooth requires a reserved area of the RAM.
For WiFi the driver itself on the NuttX kernel is enough. Currently there is no support to direct boot on ESP32 (to avoid using the bootloader), only ESP32-C3 and newer chips have support for it. Best Regards, Alan On Fri, Apr 26, 2024 at 9:26 AM Abdelatif Guettouche < abdelatif.guettou...@gmail.com> wrote: > 200KB should be the remaining SRAM size. > > BLE uses 32KB of SRAM. I don't remember Wifi having a fixed carevout in > SRAM. Then there are other areas used by the ROM bootloader that can be > revoked once the system has fully booted. > > > On Fri, Apr 26, 2024 at 2:22 PM Nathan Hartman <hartman.nat...@gmail.com> > wrote: > > > I recommend to add a comment there, to explain that although the board > has > > 320KB in total, ~200KB is used for WiFi and BLE. > > > > On Thu, Apr 25, 2024 at 8:36 PM Alan C. Assis <acas...@gmail.com> wrote: > > > > > 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. > > > > > > > > > >
