I have two vMicro projects for the two STM boards (STM32 C0... and STM32 H7...) using Visual Micro Release 2023.0507.14 - 26th July 2023.

These projects are created using

   Generic STM32C0 series and
   Generic STM32H7 series

My problem is: By using 

   Serial.println("Hello World");

I get no output on the serial console. 

Any help appreciated.

Thanks
Richard

Hi Tim,

the DTR checkbox at the bottom of the serial monitor is ON. 

Attached you find the Compiler Build Properties.

Thanks
Richard

No, it does not work with the Arduino IDE 2.1.1. I get

Sketch uses 12012 bytes (36%) of program storage space. Maximum is 32768 bytes.
Global variables use 1176 bytes (19%) of dynamic memory, leaving 4968 bytes for local variables. Maximum is 6144 bytes.
      -------------------------------------------------------------
                       STM32CubeProgrammer v2.13.0                  
      -------------------------------------------------------------

ST-LINK SN  : 066AFF313050353043144645
ST-LINK FW  : V2J41M27
Board       : NUCLEO-C031C6
Voltage     : 3.24V
SWD freq    : 4000 KHz
Connect mode: Under Reset
Reset mode  : Hardware reset
Device ID   : 0x453
Revision ID : Rev Z
Device name : STM32C03x
Flash size  : 32 KBytes
Device type : MCU
Device CPU  : Cortex-M0+
BL Version  : 0x52



Memory Programming ...
Opening and parsing file: STM32_C0.ino.bin
  File          : STM32_C0.ino.bin
  Size          : 11.94 KB 
  Address       : 0x08000000 


Erasing memory corresponding to segment 0:
Erasing internal memory sectors [0 5]
Download in Progress:


File download complete
Time elapsed during download operation: 00:00:00.453

RUNNING Program ... 
  Address:      : 0x8000000
Application is running, Please Hold on...
Start operation achieved successfully


With the scetch

void setup()
{
  Serial.begin(115200);
  while (!Serial) {}

  Serial.println("Setup STM32-C0");
}

void loop()
{
Serial.println("loop STM32-C0");
}
 

nothing is displayed on the serial monitor.

Richard

Yes, both boards have the STLink probe. 

On the boards they are identified by

   Nucleo-C031C6 NucC031C6$KU2
   Nucleo-H745ZI-Q NuH745ZIQ$AT3

Richard

Hi Simon,

using the Nucleo-64 board group was the key. Thank you so much.

I would never have thought that a board named "STM32 ..." with a 32-bit M0 belongs to a board group named "Nucleo-64". 

When I was trying to solve the problem by searching the internet, I got a lot of confusing information. Quite a lot of people failed with this problem, and finished with the conclusion, that it is not possible to use serial.println with STM boards and the Visual Micro extension.

Thank you
Richard