STM32 MPUs Products and hardware related

Hello, i need a recommendation on which MCU to use on my device for image processing, it needs to run OPENCV, use very low amounts of power(important) and it doesn´t need to process in real time. Thank you

DAC stops working on M4 side shortly after Linux boots.

This is might save someone the few hours I spent tracking this down. I am wondering if this is a bug. It would seem like a reason that you have m4 sections in the device tree. So linux can be aware not to touch an M4 resource. Linux shuts off the vdd...

Transfer Data from A7 to M4 faster than from M4 to A7

Hi,i have done some Benchmarktest via Rpmsg and iam getting following results:Maximal datarate sending data from M4 to A7 4.359 MB/s.Maximal datarate sending data from A7 to M4 9.16 MB/s.Now iam not sure why reading from A7 side is so much slower tha...

How can I set up or reset my SD card for the STM32MP157A-DK1 board?

Hello everybody,i have a problem booting the SD card. The problem occurred after I copied the device tree (.dtb) from my project from STM32CubeMx to the STM32MP157A under / boot. When booting, the U-Boot and the start kernel run endlessly. How can I ...

OpenAMP_TTY_echo example with stm32mp15xx_sram.icf

I see that the OpenAMP_TTY_echo example uses the stm32mp15xx_retram.icf file in the EWARM. But thereis also an stm32mp15xx_sram.icf file. Can someone please point out the differences between the two ic files and why the OpenAMP example used the retra...

Why does the FreeRTOS_CreateThread application example not allow breakpoints?

After importing from the repo (1.3) the application example FreeRTOS_CreateThread_CM4 when loaded for debugging, the debugger fails to set breakpoints complaining that there are already too many break points set. I only set one. It looks like the a...

Connecting microSD and eMMC at same time?

I have an STM32MP157 discovery kit and we are considering using STM32MP157 at my work for a future PCBA we are creating.We would like to connect an external UHS1 microSD slot to the STM32MP157, but for data collection writing at 100 MB/s. We would al...

GUI doesnt loads post ST Banner after USART changes in STM32MP157C-DK2 board. DIsplay controller probe failure -22

Hello, I have done the modification in the device tree related to inclusion of usart3 as per 3.3.1 Activation of a USART or UART instance in https://wiki.st.com/stm32mpu/wiki/Serial_TTY_device_tree_configuration&usart3 { pinctrl-names = "default", "s...

STM32MP1 u-boot v2020 freezes while "starting kernel" - custom board and DT

Hi,I'm using a custom board with custom device tree, the distribution is built with ST's Distribution Package (st-image-core). Now the bootloader (u-boot v2020.01) freezes while "starting kernel" with some strange errors before. Should I search for e...