Audio Examples using STM32F723DISCO and STM32CubeMX

[M3gaFr3ak]

I created an STM32CubeMX/STM32CubeIDE project and successfully integrated tinyusb into it. I copied the code from the uac2headset example and my MCU also enumerates as a speaker/microphone combo.

My problem at the moment is:
According to my understanding of your code (especially the audio_task), this project should work like stereomix, looping the speaker output to the microphone input. This isn't happening for me. I get the LED to signal that it's indeed streaming, but I don't get any signal on the microphone acording to the audio controlpanel when outputting sound on the speaker. spk_data_size inside audio_task actually never goes beyond 0.

Is the uac2headset currently working officially?

[hathach]

Is the uac2headset currently working officially?

Have you tried to run the example as it is to see if that work ? you may miss something while moving it to IDE. Also it depends on the mcu as well, you should always mentioned your MCU since each port is different.

[M3gaFr3ak]

I used mingw32-make BOARD=stm32f723disco all which also printed "Using OTG_HS in HighSpeed mode" (which should be correct, this info is also in the board.mk of the board)

EDIT: Using PORT=0 SPEED=full makes it "work" at the fullspeed port, but in Device Manager it shows

This device cannot start. (Code 10)

The specified range could not be found in the range list.

[M3gaFr3ak]

I tried debugging the audio_test program using the highspeed-USB port as the used port. When interrupting the program, it seems to be stuck in the dcd_init routine explaining why it won't enumerate.

Program received signal SIGTRAP, Trace/breakpoint trap.
0x0800268e in dcd_init (rhport=0 '\000') at C:/Users/leonl/repos/tinyusb/src/portable/st/synopsys/dcd_synopsys.c:473
473       while ((usb_otg->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0U) {}

[hathach]

hmm, probably issue with HS port, it is newly added. There is similar reset issue here #769 . Though I am not sure how it is fixed. Haven't got time to actually try it again.

Note: please make sure you compile with make and existing bsp since that is what I am gonna use to reproduce the issue.

[M3gaFr3ak]

I compiled using mingw32-make and the latest pull of the repos master branch.
Is there something I can do to help?

[hathach]

You can check out the above discussion, it may have some useful information to trouble shoot the issue. To be honest, it will be awhile until I could pull out 723 to test it.

[cdg66]

I have the same problem on my stm32f302 while debuging i say in dcd_stm32_fsdev.c that isochronous transfer are not supported

// Isochronous not supported (yet), and some other driver assumptions.
TU_ASSERT(p_endpoint_desc->bmAttributes.xfer != TUSB_XFER_ISOCHRONOUS);
TU_ASSERT(epnum < MAX_EP_COUNT);

// Set type
switch(p_endpoint_desc->bmAttributes.xfer) {
case TUSB_XFER_CONTROL:
wType = USB_EP_CONTROL;
break;
#if (0)
case TUSB_XFER_ISOCHRONOUS: // FIXME: Not yet supported
wType = USB_EP_ISOCHRONOUS;
break;
#endif

but on an stm32F4 it work perfectly