anybody got usbx / Azure rtos MSC host (USB stick) working ? (on H563-nucleo, CubeMX seem useless )

[AScha.3]

as a somewhat naive fool i was thinking, CubeMX and ..IDE is a great tool to create a working basic program, running a chip/soc and its peripherals in short time. And the problems or errors in this tools will be removed sooner or later, leading to an almost perfect tool.

So i tried the "new" H563 , on NUCLEO-H563ZI , using SD-card and USB-stick as storage and driving USB-audio-host. ok, it has only one usb-port, so i tried just make an audio-host at first.

but surprise, i cannot use FATFS, because no more there in Cube, only Azure rtos and Filex from M**bleep** to choose...

ok, so i tried this. Nothing working - what a surprise.

And the only existing example is made only for IAR , not easy to get it to stm-IDE in any useful way.

So i tried now a new simple project: just use USB-MSC , to connect a USB-stick -- to see, whats missing , to get it activated in my usb-audio-host.

But surprise, not working...out of the box. 🙂

see: this its usb handling:

yes, really doing nothing. perfect tool.

in old times, with fatfs and "simple" usb lib, on H743 i did usb-msc-host, working really:

in my simple understanding of such complex thing, as connecting an usb-stick , this old MX generated code did something useful, the new "improvement" with Azure/rtos i just dont understand - for my small brain it just looks like people with no brain at all working here to do the best they can. 

[TDJ]

@AScha.3 Yes, on Nucleo-U5A5ZJ-Q - see here.

[AScha.3]

so...is the state machine (usb_connect /..disconect etc) populated there ? or empty frame like i see on H563 ?

and where is activation/setting of usb peripheral (hardware) ? 

in all these files with very informative and creative names i cannot find, where the hardware is set to useful state:

the usb registers just stay at this state without any change :

[AScha.3]

3 days later....

:unamused_face:

[xyzzy]

@AScha.3 can you share what you needed to change to get the USB host working?

[AScha.3 · Accepted solution]

@xyzzy , maybe , if i remember all the things, i tried...

+ USB host -> for ?  I did msc here, but more audio host i want to run - and got it running.

USB MSC host "did nothing" (as on first post shown), usb stick insertion empty; 

here i had to put in this :

      /* USER CODE BEGIN UX_DEVICE_INSERTION */
    	  /* Get current Storage Class */
    	      if (current_class -> ux_host_class_entry_function == ux_host_class_storage_entry)
    	      {

    	        for (idx = 0; idx < MSC_INSTANCE; )
    	        {
    	          if (storage_instance[idx] != NULL)
    	          {
    	            /* Move to next storage instance */
    	            idx ++;
    	          }
    	          else
    	          {
    	            /* Get current Storage Instance */
    	            storage_instance[idx] = (UX_HOST_CLASS_STORAGE *)current_instance;
    	            msc_index = idx;
    	            break;
    	          }
    	        }

    	        printf("\nUSB Mass Storage Device Plugged");
    	        printf("PID: %#x ", (UINT)storage_instance[msc_index] -> ux_host_class_storage_device -> ux_device_descriptor.idProduct);
    	        printf("VID: %#x ", (UINT)storage_instance[msc_index] -> ux_host_class_storage_device -> ux_device_descriptor.idVendor);

    	        /* Get the storage media */
    	        storage_media = (UX_HOST_CLASS_STORAGE_MEDIA *)current_class -> ux_host_class_media;

    	        if (storage_media[msc_index].ux_host_class_storage_media_lun != 0)
    	        {
    	          storage_media = UX_NULL;
    	        }
    	        else
    	        {
    	          /* Get the media file */
    	          media[msc_index] = &storage_media[msc_index].ux_host_class_storage_media;

    	          /* Check the storage class state */
    	          if (storage_instance[msc_index] -> ux_host_class_storage_state ==  UX_HOST_CLASS_INSTANCE_LIVE)
    	          {
    	            /* Set STORAGE_MEDIA flag */
    	            if (tx_event_flags_set(&ux_app_EventFlag, STORAGE_MEDIA, TX_OR) != TX_SUCCESS)
    	            {
    	              Error_Handler();
    	            }
    	          }
    	        }
    	      }
      /* USER CODE END UX_DEVICE_INSERTION */

 + maybe if you use the newest "examples" from STM on github, its already there.

+

for audio host :   unbelievable , but the basic problem was: the USB port was not powered at all !!!

in xxx_hal_msp.c  i had to add:  

void HAL_HCD_MspInit(HCD_HandleTypeDef* hhcd)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hhcd->Instance==USB_DRD_FS)
  {
  /* USER CODE BEGIN USB_DRD_FS_MspInit 0 */

  /* USER CODE END USB_DRD_FS_MspInit 0 */

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USB GPIO Configuration
    PA11     ------> USB_DM
    PA12     ------> USB_DP
    */
    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_USB;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* Peripheral clock enable */
    __HAL_RCC_USB_CLK_ENABLE();
    /* USB_DRD_FS interrupt Init */
    HAL_NVIC_SetPriority(USB_DRD_FS_IRQn, 3, 0);
    HAL_NVIC_EnableIRQ(USB_DRD_FS_IRQn);
  /* USER CODE BEGIN USB_DRD_FS_MspInit 1 */
    HAL_PWREx_EnableVddUSB();       // this was missing !!!! so no power at all...
  /* USER CODE END USB_DRD_FS_MspInit 1 */
  }

}

+ then, with power enabled, surprise, surprise -- it begins to work !

[TDJ]

@AScha.3  The trap here is that ST marketing does way better job that software development does while USB is an animal particularly difficult to deal with - but you already know that. It is what it is. After listening some nice high-level presentation starting with "Hello and welcome to this presentation on..." for the most part you are on your own.
I think ST is still hoping to have low-cost self-supporting engineers community inspired by several likely compensated individuals.

It is not going to work for one fundamental reason I recently realized: people offering their precious time to help others usually do it to fulfill their own needs, to feel good about themselves earning kudos and virtual badges while usually well-paid top engineers just do not have such needs to fulfill.

I do not know if it helps, but I have a working example for USB MSC and STM32U5 I shared here to get ST's help.
It took me weeks to get it working. Probably you want to use FileX (exFAT support) and USBX, thus ThreadX.

[xyzzy]

@AScha.3 brilliant, thank you!  I was missing the call to HAL_PWREx_EnableVddUSB() so the USB registers were just sat there not signalling any device attached.