STM32 MPUs Embedded software and solutions

Hi: I'm testing the host mode.I follow the wiki steps to configure hostspot:https://wiki.st.com/stm32mpu/wiki/How_to_configure_a_wlan_interface_on_hotspot_mode.This was giving me the following out-put . I couldn't find what makesthis problem. I am thankful if you can help me to sort out this.# hostapd /etc/hostapd.conf -BConfiguration file: /etc/hostapd.confwlan0: Could not connect to kernel driverUsing interface wlan0 with hwaddr c0:84:7d:b6:6b:3e and ssid "test"[ 9014.137503] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes readywlan0: interface state UNINITIALIZED->ENABLEDwlan0: AP-ENABLED

hi i am using stm32mp157caa3, there is a i2c slave operating at 3v3, while design, we have not connected( "forget")pull up line on i2c clk and data line, so i tried enabling open-drain internal pull up in dtsi , but i2cdetect is not able to find the slave devicedtsi :            pins {               pinmux = <STM32_PINMUX('H', 11, AF5)>, /* I2C1_SCL */                  <STM32_PINMUX('B', 9, AF4)>; /* I2C1_SDA */               bias-pull-up;               drive-open-drain;               slew-rate = <1>;    &n

I have a problem with running the software on the Cortex-M4. Probably the default device tree configuration does not start the m4 core. Has anyone used a SoMlabs board and tried to run software on the Cortex-M4 core?

Hi, i moved to new ecosystem v2.0 "dunfell" and added my layers of wifi,camera, openCV and python packages from old Yocto ecosystem. when i trying to burn my custom board eMMC with my dcmi camera plugged it stuck on U-boot waiting for the USB connection to stm32Programmer to burn the eMMC . when i stopping the burn process and i trying to turn on USB mass storage i cannot see the eMMC on my computer and when i unplugged the dcmi camera everything working perfectly.and more wired stuff that it working fine with OLDER Yocto ECOSYSTEM. what changed in U-boot with USB/DCMI peripherals ?

Hi,I am using MB1166 Rev.A display with STM32MP1 board. In the default mode it shows the logs in portrait mode, how can I rotate it to landscape mode?Regards,Shrikant

Hi,I'm lead embedded engineer at some company. Our current tech stack is android board for GUI and networking connected to stm32f2 over uart, which controls our hardware.We're trying to give a shot to stm32mp1, which could be great way to reduce hardware cost and give us better tools to offload some not-real-time, but cpu intensive, tasks to application processor.We've bought STM32MP157C-DK2 with intention of porting our software on it. First step would, obviously, be running Android on it. Since we've got android image from vendor of our current android boards and modified it only slightly, we have no experience with android development. Where should we start? I assume that it should be rather simple task, since ST provides bsp for stm32mp157c-ev1; which shares same MPU. I basically need, right now, usb storage, MIPI DSI display (DK2's built in one will be fine for now) with touch screen and uart peripheral. I'll leave running wifi dongle, usb camera and ethernet for later.

Hi,Please tell me whether the virtual Uart take any hardware resoure (eg: actual UART port, PIN).Does the virtual Uart support the baudrate change? If it support, what maximum speed it can support?The virtual UART demo example in "STM32Cube_FW_MP1_V1.2.0/Projects/STM32MP157C-DK2/Applications/OpenAMP/OpenAMP_TTY_echo"Rgds,QiZhang

Hi all, I am trying to upgrade the kernel on a board running STM32MP15 BSP v1.2.0. From what I have seen, the kernel from BSP 2.0.0 is not compatible with the tf-a and u-boot used in previous BSP versions; I assume that this is due to a change in the way clocks/resets are managed (commit), which introduces a dependency on SCMI services provided by tf-a.On the other hand I see that a stm32mp15-no-scmi.dtsi file was introduced (commit) to "revert" this SCMI dependency.If I am correct, using this dtsi file in my device tree should make it possible to upgrade the kernel only, and still use the "old" tf-a and uboot from BSP 1.2.0. However I tried this and it does not seem to work (kernel hangs immediately after the "Starting kernel ..." message).Do I need something else? What am I missing?Thank you,Guillermo

Error: failed to download Segment[0]Error: failed to download the FileError: Download partition 0x21 failedError: TSV flashing service failedI am getting this error while flashing the image. I took the st-image-weston and deleted the ui and audio packages.After doing this i m now experiencing these errors. But on repeatedly flashing again finally after 3,4 tries it get flashed.I have seen other posts related to this that this error is somehow related to rootfs.But i am not able to understand why removing graphics and audio packages affected the rootfs? and what is the solution for thsi?

Hello ST Team!I'm trying to setup a simple headless distribution (with last available kit from ST), using st-image-core as a basis:"DISTRO=openstlinux-weston MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.sh"followed by:"bitbake st-image-core"It compiles fine, and i can test on my DK2.So I modified <builddir>/local.conf to include: IMAGE_INSTALL_append = " python3-requests"IMAGE_INSTALL_append = " python3-spidev"and to remove some package:DISTRO_FEATURES_remove = " alsa gstreamer splashscreen kde pulseaudio" in order to get a thinner distro.All is fine at this step.Unfornately i'm trying to remove 'packagegroup-st-demo" or "m4projects-stm32mp1-userfs" "linux-examples-stm32mp1-userfs"using the same methods, with no success! By the way it would be cool to remove unused partition too (/usr/local/)1) May someone could tell me what is the correct way to do this?2) When it successfuly compiles, i see an "uInitrd" thing in the /boot partition and i'm not sure what to do with it

I am building graphical app using GTK. I have code that make modal dialog and it works well on ubuntu, but on stm32mp1 it doesn't. Dialog appear ,but it is not modal (i can click outsite and it disapear, or move it around). I am doing something wrong or it is impossible to make this on stm32mp1?Here is image from Ubuntu:And here is the code:#include <gtk/gtk.h>   static GtkWidget *window = NULL;   void openDialog() { GtkWidget* dialog = gtk_dialog_new_with_buttons ( "Do you want to continue?", GTK_WINDOW(window), GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, "Yes", GTK_RESPONSE_ACCEPT, "Cancel", GTK_RESPONSE_REJECT, NULL); gtk_window_set_position(GTK_WINDOW(dialog),GTK_WIN_POS_CENTER); int result = gtk_dialog_run (dialog); gtk_widget_destroy (dialog); if(result==GTK_RESPONSE_ACCEPT) { //continuing } else { //canceling } }   int main( int argc, char *argv[]) { gtk_init(&argc, &argv);   window = gtk_window_new (GTK_WINDOW_TOPL

I would like to use node-red on STM32MP157C-DK2 to handle datas computed and shared with IPCC by Cortex-M4.Any advice ?Thank you

Hi,I was looking at the ST Yocto dunfell update and wanted to update tf-a firmware and u-boot:https://github.com/STMicroelectronics/meta-st-stm32mp/tree/dunfell/recipes-bsp/trusted-firmware-aUnfortunately I did not realize which of the tf-a versions I should use and ended up flashing the SSP version (using STM32_Programmer_CLI programmer via USB OTG connection)I had a serial terminal connected open on the other port and saw an error about SSP not being supported on this board when it tried to boot, so I wanted to flash back my old version. Unfortunately, I had to realize that its no longer possible...The USB OTG connection which is being used for DFU is dead, I do not see anything in dmesg on my notebook when plugging or unplugging the the ST board or when powering cycling the board. The other USB port which I use for a serial connection is still being detected, but I see no output in the terminal when powering the board on.Basically I lost the ability to reprogram the board via DFU...

I cannot find compatible displays for this processor.

I'm trying to build linux-5.4.31 for stm32mp1c-ev1 (tag: v5.4-stm32mp-r1). u-boot loads the kernel successfully, but then nothing happens. I've gone in with GDB, and noticed that the kernel is stuck in start_kernel(), and never leaves it.What is the fix for this?#0 cpu_v7_do_idle () at arch/arm/mm/proc-v7.S:78#1 0xc010a1a4 in arch_cpu_idle () at arch/arm/kernel/process.c:71#2 0xc0158064 in cpuidle_idle_call () at kernel/sched/idle.c:154#3 do_idle () at kernel/sched/idle.c:263#4 0xc01583d8 in cpu_startup_entry (state=CPUHP_ONLINE) at kernel/sched/idle.c:355#5 0xc0acb5b8 in rest_init () at init/main.c:451#6 0xc0f00a40 in arch_call_rest_init () at init/main.c:573#7 0xc0f00f10 in start_kernel () at init/main.c:785#8 0x00000000 in ?? ()

Hello there,I have been trying to compile the newest release 2.0.0, first with some extra packages and also without them, but at around 90% the compilation process fails with following error:ERROR: Task (/home/paradox/Desktop/workspace/openstlinux-5.4-dunfell-mp1-20-06-24/layers/meta-openembedded/meta-oe/recipes-benchmark/glmark2/glmark2_git.bb:do_configure) failed with exit code '1'I am running the newest Ubuntu 20.04 LTS, which is not under officially supported distributions, however I don't believe that it is the real cause of the problem.EDIT: It seems like it was really the 20.04 Ubuntu being an issue. The package was successfully built on the older 18.04, so my updated question is, will there be support for the newest Ubuntu version 20.04 and if so, approximately when could we expect it to be available?

I'm trying to run STM32MP1 with two CAN FD drivers connected to PD0/1 and PB5/13.I have connected saleae analyzer to all four TX, RX lines and there is no changes during candsend command. I got only " write: No buffer space available" message.How to properly run CAN bus on STM32MP1 ?root@txmp-1530:~# ifconfig -a can0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 NOARP MTU:16 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:10 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:51 can1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 NOARP MTU:16 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:10 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:53 root@txmp-1530:~# ip link set can0 type can bitrate 125000 root@txmp-1530:~# ip link set can0 up root@tx

If I configure SAI 2 in cubeMX I get a greyed out option that the synchronous slave is not available unless I have one SAI as master, but I have set SAI A as master (or master with master clock out). So what am I doing wrong?It doesn't matter if I configure it for the A7NS or the cortex-m4, the option is greyed out.The pins are available for both the SAI2 A/BIs this a limitation of cubeMX? Or am I missing something?Thanks, Robert

For STM32MP1 device we can able to check the M4 device in keil 5 . We are un able to get the cortex A7 device . Can you please suggest the supported IDe for A7. We don't want to use the os We want to use freeRtos.

is there a way to tell the kernel (I'm using the Distribution Package) to use a specific pin (not the built-in DE signal) to control the Data Enable of an rs485 transceiver whenever I write something to the related tty?

NOTE: Executing SetScene TasksNOTE: Executing RunQueue TasksERROR: u-boot-stm32mp-extlinux-2.0-r0 do_create_multiextlinux_config: Error executing a python function in exec_python_func() autogenerated:The stack trace of python calls that resulted in this exception/failure was:File: 'exec_python_func() autogenerated', lineno: 2, function: <module>    0001: *** 0002:update_extlinuxconf_targets(d)    0003:File: '/home/horner/GIT_TEST/yocto/warrior_2.7.1/sources/meta-st-stm32mp/classes/extlinuxconf-stm32mp.bbclass', lineno: 122, function: update_extlinuxconf_targets    0118:           continue    0119:       for devicetree in devicetree_list.split():    0120:           bb.note('*** Loop for devicetree: %s' % devicetree)   &n

I am trying to add nodejs to the distribution. Nodejs recipe is alreaddy present in the layers but whn i bitbake the recipe there is a very long error, hence i am not able to build it. i have seen the recipe and the compatible machines are defined as COMPATIBLE_MACHINE_armv4 = "(!.*armv4).*" COMPATIBLE_MACHINE_armv5 = "(!.*armv5).*" COMPATIBLE_MACHINE_mips64 = "(!.*mips64).*"is this something related to this? how can i add the nodejs as well as npm in my yocto os?

Hi,I'm getting errors when building the latest kernel for Developer-Package's linux-5.4.31. (Please see error below). Anyone else successfully built this version?/Developer-Package/stm32mp1-openstlinux-5.4-dunfell-mp1-20-06-24/sources/arm-ostl-linux-gnueabi/linux-stm32mp-5.4.31-r0/linux-5.4.31/scripts/dtc/yamltree.c:9:10: fatal error: yaml.h: No such file or directory #include <yaml.h>

Hello,We are considering the STM32MP151x MPU for a new project. However we need at least 20 independent PWM outputs (at the same frequency but different duty cycle). After reading the datasheet, it is still not clear to me how many PWMs STM32MP151x has.TIM1, TIM8 ==> 2 x 6 independent channels (at the same frequency) ?TIM2, TIM3, TIM4, TIM5 ==> 4 independent channels ?TIM13, TIM14, TIM16, TIM17 ==> 4 independent channels ?TIM12, TIM15 ==> 4 independent channels ?Total 24, am I right ?ThanksHugo

smt32mp157a-dk1/c-ev1 boards. When BOOTSCHEME_LABELS (stm32mp1-eval.conf) is changed from "trusted" to "basic" the build of u-boot-stm32mp recipe fails. Ecosystem 1.2.0 .