char *data = "Hello World";   while (1) {   HAL_GPIO_TogglePin(LD2_GPIO_Port,LD2_Pin);   HAL_Delay(1000);   CDC_Transmit_FS((uint8_t*)data,strlen(data)); }uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len) { uint8_t result = USBD...