About mjuels

mjuels · 2024-10-21

I am working on a board containing two STM32F412, and I am having a hard time reaching the DFU bootloader:If I power off the board, pull the boot pin low, and then power on the board directly via USB, then cubeProgrammer is able to connect to the boo...

mjuels · 2023-12-05

I am working with an STM32MP157d-dk1 board, but am trying to make my own MVP board running yocto on the STM32MP157 chip and have questions concerning the use of the debug console.I believe the debugging console for the dev board runs via uart4, and i...

mjuels · 2023-11-11

Hi,I have an STM32MP157d-dk1 board, which I am flashing with a Yocto Kirkstone, core-image-minimal image.I am trying to enable production mode debugging of the M4 through STM32CubeIDE, but so far without success.I have added ssh and sftp to my local....

mjuels · 2023-11-02

I am bitbaking the core-image-minimal image, for a plain yocto poky distribution (Kirkstone), using stm32mp1 as my machine, and I am trying to figure out how the various st partition images are included in the build process. That is, how and where ar...

mjuels · 2023-09-01

I am working on a STM32MP157D-DK1 board, and I am trying to follow the guide from the wiki to start the coprocessor from u-boot:https://wiki.st.com/stm32mpu/wiki/How_to_start_the_coprocessor_from_the_bootloader#Start_from_the_bootcmd I have pulled th...

mjuels · 2024-10-30

I figured it out.I had forgotten that BOOT1 is a physical pin on the F412 (PB2) - I had left it floating in my design, so the wrong boot mode is selected.If I manually ground PB2 with a jumperwire during reset, the correct bootmode is selected, and t...

mjuels · 2024-10-22

Hello @STOne-32 ,I saw you added a kudo but no remark om the issue:Do you have any suggestions on why the NRST does not reset the USB phy?We have used the same STM32F412 on other boards where this issue does not occurI have measured that the NRST is ...

mjuels · 2024-10-22

Hello @STOne-32 ,I think I maybe understood your suggestion:Before powering on the board, I grounded the boot pin (and left it grounded for all of the following)I then powered the board via a 24V external supplyI attached the USB cable-> CubeProgramm...

mjuels · 2024-10-22

Hello @STOne-32 ,Thank you for your reply, although I am not certain I understand - Can you elaborate what you suggest I should try?To elaborate on my issue:My board can be powered either by a 24V supply, or directly by USB cable In the description t...

mjuels · 2023-11-27

I figured it out (more or less).I followed the guide available here:https://linuxlink.timesys.com/docs/wiki/engineering/HOWTO_Use_USB_Gadget_EthernetAfter modprobe, and ifconfig on the board side, both the board, and my host computer gets an addition...

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Power cycle required to enter DFU

Where is uart4 configured for output on STM32MP157d-dk1

How to enable production mode debugging in Yocto

Where are bootfs, userfs, and vendorfs installed by bitbake?

STM32MP1 - How to start the coprocessor from the bootloader

Re: Power cycle required to enter DFU

Re: Power cycle required to enter DFU

Re: Power cycle required to enter DFU

Re: Power cycle required to enter DFU

Re: How to enable production mode debugging in Yocto