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TDJ · 2023-09-21

While investigating for the firth evening in the row why OTH_HS USB on STM32U5A9x does not work I reviewed USB registers. There are quite few of them and in HAL some are them are named differently than in RM0456 (details here), but that is not the ro...

TDJ · 2023-09-19

In RM0456 section 73.4.3 OTG_HS core (p.3279) I found the following statement:"The OTG_HS receives the 60 MHz clock from the reset and clock controller (RCC). This is typically generated in the PLL associated with the HS PHY and enabled in the RCC. T...

TDJ · 2023-09-18

I am unable to make working ThreadX USBX Host example for STM32U5 adopted for Nucleo-U575ZI-Q.All, but the last setup step described in Introduction to USBX section 3.3 complete properly, but when finally HAL_HCD_Start() is called, ThreadX crashes. W...

TDJ · 2023-09-15

Every time I need to configure I2C, which is not often, I have to check the correct rise and fall times for the default 100kHz frequency and doing so I am asking myself a question why the typical 100kHz value is provided by default but rise and fall ...

TDJ · 2023-09-14

I am unable to configure TCPP03-M20 USB power controller chip available on B-U585I-IOT02A board.Supposedly, unlike most other boards, this board should be able to provide power to a device over USB-C connector.However, I found no examples of how to p...

TDJ · 2023-09-25

Today I did more testing and it gets interesting.For USB Host to function some interrupt masks (GINTMSK register) have to be set which takes place in USB_HostInit() function. I am showing that this register is written to, but the value does not get s...

TDJ · 2023-09-23

To summarize,CubeMX does not properly configure high speed USB IP available on new STM32U59x/5Ax/5Fx/5Gx MCUs. RCC.APB3ENR.SYSCFGEN is not enabled first.HS USB_OTG examples are available for STM32U5G9J-DK2 (board not available yet) and NUCLEO-U5A5ZJ-...

TDJ · 2023-09-22

@CLeo.1 Is clock stretching enabled?

TDJ · 2023-09-22

@ABOUA If you mean NUCLEO-U5A5ZJ-Q board, than it can be configure to provide USB power using SB8-10 jumpers, although it is not documented and should be done with caution.True, such configuration is not an option for STM32U5A9J-DK board, which proba...

TDJ · 2023-09-21

@Pavel A. I have tried available Ux_Host_xx examples first, but could not get any of them working.I am well aware that ST is not a software company and their software testing process, if it exists at all (which often I doubt and by no means I try to ...

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Why OTH_HS USB on STM32U5A9x just does not work?

USB on-the-go high-speed (OTG_HS) - core setup confusion

USBX and STM32U5 crash

CubeMX I2C stupid UX issue

B-U585I-IOT02A board configured as USB-C power source - please help

Re: Why OTH_HS USB on STM32U5A9x just does not work?

Re: Why OTH_HS USB on STM32U5A9x just does not work?

Re: STM32H743ZI Bizzare behavior from I2C with Reload = 1

Re: Why OTH_HS USB on STM32U5A9x just does not work?

Re: Why OTH_HS USB on STM32U5A9x just does not work?