Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
Dear Community,we are bringing up our own HW platform based on the STM32MP151A MPU. The use-case currently is that we obtain data permanently over several hours and store it on a sd card at a speed of max. 15MByte/sec. After the data acquisition we ...
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...
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...
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 ...
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...
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...
We use HSE osc instead of xtal as suggested by errata. However to support STANDBY we need to turn it off by GPIO. The idea is to boot from SPINAND on HSI and turn HSE in bootloader.Unfortunately it seems that ROM hangs when HSE is not present:< @ 006...
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...
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...
