title: STM32 USB VCP (Virtual Com Port)
body: <p>I generated a code for "stm32f103c8t6" with CubeMX for USB VCP, when I add "CDC_Transmit_FS" command to send data, the port isn't recognized by windows10!
  what should I do? Here is the code which is compiled without error:</p>
  
  <pre><code>#include "stm32f1xx_hal.h"
  #include "usb_device.h"
  #include "usbd_cdc_if.h"
  
  int main(void)
  {
    uint8_t Text[] = "Hello\r\n";
    while (1)
    {
      CDC_Transmit_FS(Text,6); /*when commented the port is recognized*/
          HAL_Delay(1000);
    }
  }
  </code></pre>