cant open the stm32f401cc serial terminal

[leonardo]

my board is stm32f401cc，and IDE is PlatformIO in vscode.

When I build and upload the code (via serial port), I open the monitor with serial port but can't see any data, thanks for your help

Code: Select all

#include <Arduino.h>
void setup() {

Serial.begin(9600);

}

void loop() 
{

    Serial.println(" Hello Arduino ");

}

This is what I have after opening the serial monitor

Code: Select all

--- Terminal on /dev/cu.SLAB_USBtoUART | 9600 8-N-1
--- Available filters and text transformations: colorize, debug, default, direct, hexlify, log2file, nocontrol, printable, send_on_enter, time
--- More details at https://bit.ly/pio-monitor-filters
--- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H

[GonzoG]

What are your board settings ??
As Serial might be USB Serial, not UART.

[leonardo]

What are your board settings ??
As Serial might be USB Serial, not UART.

hi，thanks.my board setting is UART.

[GonzoG]

UART what ??