On Fri, Apr 26, 2024 at 11:01:20AM -0300, Alan C. Assis wrote: > 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.
Well - in my case I needed ethernet. But unfortunately I'm chasing a problem right now in that the system hangs after a short while, which is somewhat reproduceable. That's why my first investigations also went into memory and stack issues. But I am using an older NuttX, so things might be a local issue. Additionally I needed local hacks to get ethernet running because of my hardware hacks to work arround the PHY clock issues. Not going to love the ESP32 for ethernet. > 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. > > > > > > > > > > > > > > -- B.Walter <be...@bwct.de> https://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
