STM32 MPUs Embedded software and solutions

Hi, I use SPI1 and SPI4 in CM4 context on my custom board. Now, I use SPI_FullDuplex_ComIT_Master_CM4.elf binary to test those SPI controllers. The SPI4 is working, but the SPI1 doesn't working. Below is the log when SPI1 firmware started root@stm32mp1:~# echo "start" > /sys/class/remoteproc/remoteproc0/state [ 47.494072] remoteproc remoteproc0: powering up m4 [ 47.549448] remoteproc remoteproc0: Booting fw image SPI_FullDuplex_ComIT_Master_CM4.elf, size 2009036 [ 47.557833] remoteproc remoteproc0: header-less resource table [ 47.564191] remoteproc remoteproc0: not resource table found for this firmware [ 47.571421] remoteproc remoteproc0: header-less resource table [ 47.637048] rproc-srm-core m4@0:m4_system_resources: bound m4@0:m4_system_resources:serial@4000e000 (ops 0xc0a935f8) [ 47.646744] rproc-srm-core m4@0:m4_system_resources: bound m4@0:m4_system_resources:serial@40011000 (ops 0xc0a935f8) [ 47.672140] rproc-srm-core m4@0:m4_system_resources: bound m4@0:m4_system_resources:d

Hi,Section "4.3.11 NVIC register map" states that the base address of the main NVIC register block is 0xE000E100 and NVIC_ISERx registers starts at offset 0x100 (Table 49. NVIC register map and reset values). The same offset is given in section "4.3.2 Interrupt set-enable register x (NVIC_ISERx)".The problem is that the correct offset is 0x00 and the corresponding sections for registers ISERx, ICERx, ISPRx, ICPRx, IABRx and IPx provides the offsets' values greater by 0x100 than real values.The table 45 "NVIC register summary" and CMSIS source code (core_cm4.h declaration of NVIC_Type struct) provide correct values.

Hi, Is there a way to take screenshots on the STM32MP157C-DK2? thanks in advanceLukas

Hi, how can I disable the autostart of the demo-application on the STM32MP157C-DK2 and make my own application autostart ?thanks in advanceLukas

Hello, I am using STM32MP157C-DK2 evalution board and I successfully booted the board with STM yocto,now I was trying to add a new environment variable in the Uboot.But I was not able to get how to do that.Can anyone suggest how to do this.RegardsSrikanth.

I have successfully built the st-example-image-qt using Bitbake (see first image) and have successfully downloaded it to the stm32mp157c-dk2 board (see second image). But now I cannot SSH into the board. When I use the ip add show eth0 command I can only see the inet6 ip and not inet. Then I tried to follow this article, https://wiki.st.com/stm32mpu/wiki/How_to_perform_ssh_connection, but there is no /etc/init.d/sshd directory and I can't use apt install as I have no wifi connection on the board. Anyone else have this issue with the qt example image?EDIT 1: I also tried this article with no luck although now I do see an inet IP address when I manually set it with the ifconfig command I still can't SSH in, https://wiki.st.com/stm32mpu/wiki/How_to_configure_ethernet_interface. More information, I am using an Ubuntu virtual box as my host computer and using a usb 3 ethernet to USB adapter so not sure if that has anything to do with it? I did try this on a native linux computer with an eth

Hi St-Community,im hanging around with the following Problem:I build up a yocto environment and build sucessfully images. No its time to add a custom devicetree to the linux. So i followed the instructions on:https://wiki.st.com/stm32mpu/wiki/How_to_create_your_own_machineBut i get the following error when i start to build a image with bitbake image-base-minimal.ERROR: u-boot-stm32mp-extlinux-2.0-r0 do_create_multiextlinux_config: No UBOOT_EXTLINUX_CONFIG_FLAGS list defined, nothing to do ERROR: u-boot-stm32mp-extlinux-2.0-r0 do_create_multiextlinux_config: Function failed: update_extlinuxconf_targets ERROR: Logfile of failure stored in: /opt/build/tmp/work/stm32mp1_mustera-poky-linux-gnueabi/u-boot-stm32mp-extlinux/2.0-r0/temp/log.do_create_multiextlinux_config.5058 ERROR: Task (/opt/yocto/meta-st-stm32mp/recipes-bsp/u-boot/u-boot-stm32mp-extlinux.bb:do_create_multiextlinux_config) failed with exit code '1'Have you any hints to me where i can debug. I dont know wehere these variables

I checked out the Yocto based OpenSTLinux distribution, it has `m4projects` recipe in recipes-extended. However, I don't see an easy and modular way to add STM32CubeIDE based projects into the OpenSTLinux framework. Do you have any suggestions on it? I was thinking of developing a yocto layer or a recipe base for it.

STM32MP157DAB1, WINBOND QSPI memory attached to default pins.How to program first stage bootloader trough DFU mode? Boot pins=000STM32CuneProgrammer says:15:11:45:986 : failed to read the requested memory content15:11:46:788 : failed to read the requested memory content15:11:47:790 : failed to read the requested memory contentand nothing able to download. Memory work fine, If I use external SPI FLSH programmer - any diagnostics work well, JEDEC commands (Serial Flash Discoverable Parameters (SFDP), for Serial NOR Flash) to memory pass and get all properties.MPU boot process from SPI memory well done (if boot pins = 001). Then I open my fsbl.stm32, message box about Partition ID appear at download phase, Where I should specify this ID?

EDIT: issue resolved after clearing my tmp

Hi everyone,Can I use SJA1105Q is automotive ethernet swifch IC with mp1? Also, while debugging via SSH can I use it?

Here the output of some commands issued on our target at u-boot stage:> STM32MP> mmc list > STM32 SDMMC2: 0 (SD) > STM32 SDMMC2: 1 > > STM32MP> ls mmc 0:4 > <DIR> 1024 . > <DIR> 1024 .. > <DIR> 12288 lost+found > 8192 uboot.env > 6677056 uImage > 71859 stm32mp151a-<myimage>-mx.dtb > 583 boot.scr.uimg > > STM32MP> mmc list > STM32 SDMMC2: 0 (SD) > STM32 SDMMC2: 1 (eMMC)Two questions:why the eMMC is not enumerated before trying to list anything in the SD device?why both are referred to the SDMMC2 bus? I'm expecting the SD card on SDMMC2 and eMMC on SDMMC1... in other words, how to check if the MPU finds the right device when changing the boot dip-switches to eMMC?

Hello!I try to understand how to exclude some memory from ddr for Linux, but M4 must have to access to that memory, because M4 needs to store about 40 Mb, but not RETRAM or SYSRAM doesn't allow it. So, I try to store this in ddr, but I don't want that Linux can use this memory region.I try to use reserved memory in Linux dts like that: in root node in stm32mp157a-dk1.dtsmemory@c0000000 {      reg = <0xc0000000 0x20000000>;    };      reserved-memory {      #address-cells = <1>;      #size-cells = <1>;      ranges; m4ddr: m4ddr@0xd7ffffff {          reg = <0xd7ffffff 0x4000000>;          no-map;        };...And in m4 node I added this region to memory-region:&m4_rproc {&nbsp

Is it possible to Load/Start the Cortex-M4 from TF-A or uboot ?For our use case we want RTOS in Cortex-M4 running as soon as possible.Well before linux finishes booting.

Hi,I want to use modbus TCP with the libmodbus library (https://libmodbus.org/) on the STM32MP157C-DK2. However I struggle to install/use the library. Any experiences or suggestions on installing/use external libraries with the SDK?For cross-compilation I use the SDK with the development packageregards,Lukas

I would like to use the I2C_EXT channel on the EV1. The only devices in STLinux are /dev/i2c-1, /dev/i2c-2We are evaluating for purpose of supplanting development on R.Pi with something more industrial, like MP1.2 things I want to accomplish:1: have kernel / OS complete connection chain in orderwhat are the steps I need to take to make this happen?2: use PYTHON SMBus to communicate to my devicesapt-get install does not find anything beyond low-level I2C utils prepackaged, sowhat are the step I need to take to get SMBus in PYTHON operating? thanks. -PUP.

Hi!I installed st-example-image-x11 on the board STM32MP157x-DK2.I can not log in :(In the comments, I read that I need to fix the rootfs / etc / lxdm / lxdm.conf file.Here is the file with my corrections[base]## uncomment and set autologin username to enable autologinautologin=root## uncomment and set timeout to enable timeout autologin,## the value should >=5#timeout=10## default session or desktop used when no systemwide config#session=/usr/bin/startlxdesession=/usr/bin/openbox-session## uncomment and set to set numlock on your keyboard# numlock=0## set this if you don't want to put xauth file at ~/.Xauthority# xauth_path=/tmp# not ask password for users who have empty passwordskip_password=1## greeter used to welcome the usergreeter=/usr/libexec/lxdm-greeter-gtk[server]## arg used to start xserver, not fully functionarg=/usr/bin/X -s 0# uncomment this if you really want xserver listen to tcp# tcp_listen=1# uncoment this if you want reset the xserver after logou# reset=1[display]

Hi guys.i can quickly and easily access SYSRAM in engineering mode.i read in RM0436 Reference manual:backhand_index_pointing_down:  SYSRAM is implicitly allocated to the MPU. So there is no enable bit for the MPU to allocate this memory. But when the MCU wants to access the SYSRAM, the memory must be enabled via RCC AXI Periph. Enable For MCU Set Register ...I enabled the SYSRAM peripheral clocks, But nothing has changed yet:pensive_face: . i have no idea what to do...thanks in advance for all your help:folded_hands:

I want to use a Winbond W25M02Gxx 256MByte (2x1Gbit) on MP157 QSPI1 port. It seems that the boot mode supports the use of Serial NAND Flash.Anyone tried this?

Hi everyone,Can I assign, for example, UART to Cortex M4 runtime context, and generate appropriate device tree files for STM32MP1, and then after boot, reassign UART to Cortex A7 runtime context somehow? Best regards, Nenad

Hello everyone,I managed to build st-example-image-qt on my STM32MP157C-DK2 with some extra image features.Now i just want to run bitbake meta-toolchain-qt5 but the build end up with errors that i can't solve.I attached the output console when i try to build it. Do you have any clue how to resolve this ?Thank you.

Hi,I want to generate a new distro for MP1 with distribution package and qt-examples. I downloaded all of the packages via fetchall command to avoid getting an internet connection error during generating. After that, I have tried to generate an image including qt examles. However, it wasn't completed for 2 days(it didn't compile qtwebkit for 2 days). I then have cleaned qtwebkit with "bitbake -c clean qtwebkit" command and tried compile only it(bitbake qtwebkit) but get an error is error 1 again. Why does it compile? And, how can I disable it from the image?

Hello On a STM32MP1-DK2 discovery board, running the latest starter image, flooding the ethernet interface with SYN packages leads to a reboot of the system. This behavior is reproducible and appears after around 30 secs.I stress tested the network interface of the STM32MP1-DK2 board with high loads, generated by a self written SYN flood application.The board is connected via Gbit Ethernet to a developer PC, which sends the SYN packets (around 400Mb/s on sender device).After around 30 seconds the boards reboots due to a stack exception. Is this issue already known?I appended the debug print over the serial interface during the network attack.Thank you and best regardsFlorian

Hi all,I'm developing a custom board based on STM32MP153 SoC, and I need to use the internal RTC. I also need to output its 32.768kHz reference clock from I8 pin.As stated at https://wiki.st.com/stm32mpu/wiki/RTC_device_tree_configuration, into the Linux dts I enabled the internal RTC using this node:&rtc { st,lsco = <RTC_OUT2_RMP>; pinctrl-0 = <&rtc_out2_rmp_pins_a>; pinctrl-names = "default"; status = "okay"; };but at the boot I get this log message:stm32_rtc 5c004000.rtc: Can't enter in init mode. Prescaler config failed. stm32_rtc: probe of 5c004000.rtc failed with error -110The driver is not loaded, thus I don't have the 32.768kHz clock on I8 pin.Could you help me to figure out what I'm doing wrong?Thanks in advance, regardsMauro

Hello thereI'm not familiar with building linux for embedded systems. I need to build an yocto openstlinux distro with arm-ostl-linux-gnueabi-gcc to be able to compile at least simple "helloworld" on STM32MP157-DK1My extra packages in local.conf are:CORE_IMAGE_EXTRA_INSTALL += " \mc \minicom \gcc \libgcc \glibc \bluez5 \binutils \"But when i run compilation (DISTRO=openstlinux-weston MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.sh , bitbake st-image-weston), i get errors:root@stm32mp1:~# arm-ostl-linux-gnueabi-gcc -o helloworld helloworld.chelloworld.c:1:10: fatal error: stdio.h: No such file or directory #include <stdio.h>     ^~~~~~~~~compilation terminated./usr/local/include doesn't exist and do not contain any headersWhich packages should I add in local.conf to avoid this error and compile 'helloworld'?