HS Example Issues

[BennyEvans]

Hi,

I've been experimenting with the STM32H7 series and thought I'd give tinyUSB a go as STs USB library doesn't seem great. I've been using a Waveshare STM32H743 board (ensure you check for any solder bridges on these boards - I quickly found one on the LCD ribbon connector) with USB3300 PHY. This seems to be the same board discussed breifly in discussion #633 by @squintz and @MimitechIndustries

I can run examples fine at FS, but after making the appropriate pin config changes and tinyUSB config changes, I cannot seem to get any of the HS examples to work. They compile and flash fine but when plugging the board in, nothing happens at all. I've tested the hardware by compiling a HID example with the ST USB library and it all worked fine. I just can't figure out why the tinyUSB HS examples aren't working and without any expensive HS USB analyser, it seems like it may be a difficult task to debug. In addition, I've tried flashing a NUCLEO-H743ZI2 with a HS example without success, though I don't entirely trust the connection from the dev board to USB PHY was great using dupoint breadboard jumper wires.

I'll keep digging and debugging, but any help I can get here might save me a heap of time. Where is the most obvious place I should be looking for issues? Any help is greatly appreciated.

Cheers,
Ben

[hathach]

make sure you run with stock example and add your own bsp based on other similar supported bsp such as h743eval https://github.com/hathach/tinyusb/blob/master/hw/bsp/stm32h7/boards/stm32h743eval/board.mk you need to run make with PORT=1 as option (h743eval has it set to 1 by default). Always start with stock example first.

[BennyEvans]

Bit of an update on the BSP package for this board. I'm happy to submit a PR for the board with FS working, however, I cannot get HS to work reliably. I'm sure if I commit in it's current state, we'll end up with more questions about why it doesn't work. I can commit the code as is with a disclaimer that HS isn't working fully, but want your opinion on what I should do here.

I'm still digging to find why it isn't working reliably.

[BennyEvans]

My custom HS CDC only code in STMCube seems to work very reliably now, but when compiling the cdc_msc example with the GNU Arm Embedded Toolchain, I can't get the PHY running at all. I have a loop at startup that continually attempts to read from the PHY, resetting the PHY on a timeout but it just never responds. I'll keep digging and might probe some signals with an oscilloscope to see what's happening. But it might take me longer than expected to get a HS BSP.

The FS examples work fine in either toolchain and in every example I've tested so far.

[BennyEvans]

Apologies for my rambling, it's been driving me crazy but both HS and FS seem to be working fairly reliably with my BSP in both toolchains now. The addition of __HAL_RCC_SYSCFG_CLK_ENABLE() also helped 😖

Expect a PR within the next couple of days after I've tested some more.

[hathach]

no problems at all, I appreciate your effort and update on the progress. I am glad you figured it out. It is really hard to work with HS PHY from my last experience getting it running :)

[BennyEvans]

I've just submitted the PR. It all seems to be working well. Cheers.