Ports menu grayed out

Software IDE 2.x
1

I'm trying to use Arduino 2.3.2 with an STM32F405 board and I configured it to use these recommended settings, but I can't open the Serial monitor for the board. It can connect to my laptop and even upload code successfully, but I can't access the ports menu and receive Serial output from the board.

Edit: I'm able to get the Ports menu to open back up if I go into the Device manager and add additional ports, but usually my boards use COM3 or COM5, which I cannot access through the ports menu. All of the legacy hardware I install (tried the Arduino USB Serial adapter and the STMicroelectronics Virtual COM port) will only install in ports after 5. I was only able to get it working once, and that was when I was able to connect to COM5, but I don't know what happened to allow access to COM5, and it stopped working as soon as I attempted to upload a different sketch to the board.

2

I have another version STM32 (Blue Pill). This is supposed to be ok for any STM32

USBSerial serial;

void setup() {
  serial.begin(115200);
}

void loop() {
  serial.println("Hello");
  delay(200);
}
3

The code I'm trying to run looks pretty similar:

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println("Serial is alive!");
  delay(500);
}

But I did try to run yours just now and I'm running into the same problem: the Serial Monitor says that there aren't any boards connected.

4

But it's not. The code I posted does not use Serial. It uses USBSerial.
Note it isn't Serial.begin(), it's serial.begin() (lower case 's')

5

Right! Sorry for the confusion, I'm trying to say that running your code didn't fix the issue either. :frowning_face:

6

Try these recommendations from Arduino...