STM32 MPUs Embedded software and solutions

Hi I am using the discovery kit (STM32MP157F-dk2), i check the manual and i did not get the Actual pin of the CANFD , so please let me know the pin of the CANFD or other-wise could you please provide me the example how to read the CANFD value from the pin.

Hi everyone i download the Distribution package for ##STM32MP1F-DK2 and i made some changes on kernel like in device tree, my colleague is doing work-from-home job, So my colleague wanted to see the changes own there laptop and something want to change according to there requirement on same source code( Distribution package). how we can do that .please help me out this 

Hi Every One i am facing the issue to find the pins of PWM in the (STM32mp157f-dk2 ), i configured the PWM channel in device tree and pwm channel is visible in  /sys/class/pemchip0/pwm , so i need to collect the input from the pins but which pin is connected to PWM i do not know , could you please help me out this.(this is my my output form the board terminal )root@stm32mp1:/sys/class/pwm/pwmchip0/pwm0# lscapture duty_cycle enable period polarity power ueventroot@stm32mp1:/sys/class/pwm/pwmchip0/pwm0#I Need 1. how to use pin and which pin i  need to connect 2. i want to collect the input prom the PWM.3. and the should be show on the terminal. if i am wrong and any thing missing , please correct me 

Hello,I am wondering what could be the best way to write a device tree that sets the STM32MP1 as SAI SLAVE with a CODEC also running as SAI slave. The HW design I am studying has the following specs:1) STM32MP1 with ALSA and one SAI interface.2) A codec chipset running as SAI slave.3) The Si5351B part running as a MASTER clock providing the SAI bit and frame (L/R) clocks to both the SoC and CODEC.I understand such a setup is a little out of the norm. How can the device tree be modified on the SAI side to avoid the STM32MP1 to become a MASTER. The snippet of a possible device tree is below.How can  I force the STM32MP1 to be a SLAVE on SAI?I would imagine writing the device tree as follows: &sai1{ pinctrl-names = "default", "sleep"; pinctrl-0 = <&sai1b_pins_mx>; pinctrl-1 = <&sai1b_sleep_pins_mx>; status = "okay"; /* USER CODE BEGIN sai1 */ /* Specify external clock sources for SAI1 We MUST add the clock-names according to the doc. */ clocks = <&

I tried to replace the uImage and .dtb file inside the starter package.First I copied over the kernel and .dtb file.sudo mount -o loop st-image-bootfs-openstlinux-weston-stm32mp1.ext4 /mnt/bootfs sudo cp ../linux-6.1.82/build/arch/arm/boot/uImage /mnt/bootfs/ sudo cp ../linux-6.1.82/build/arch/arm/boot/dts/stm32mp151a-stm32-computer-firmware-mx.dtb /mnt/bootfs sudo umount /mnt/bootfs Then I booted the Linux kernel. See the log file log.txt. It stopped at the USB Hub decleration. So I guess that linux kernel was booted, but not initrd.I tried to boot the system manually via U-boot and this happen.STM32MP> part list mmc 0 Partition Map for MMC device 0 -- Partition Type: EFI Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000400 0x000007ff "metadata1" attrs: 0x0000000000000000 type: 8a7a84a0-8387-40f6-ab41-a8b9a5a60d23 (8a7a84a0-8387-40f6-ab41-a8b9a5a60d23) guid: 92f0b426-e174-4bac-9287-019e4f858971 2 0x00000800 0x00000bff "metadata2" attrs: 0x

Spoiler (Highlight to read)  Hello,I am trying to configure an ADC channel using IIO library to work in triggered buffer with high frequency (preferably more than 100kHz). I configured ADC and timers as described here (including trigger configuration in kernel device tree) and tested the its performance:https://wiki.st.com/stm32mpu/wiki/How_to_use_the_IIO_user_space_interface Testing MethodI tested the configuration by measuring 100Hz sinusoidal signal made with a function generator at different sampling frequencies. The sampling frequency value was set to 10000Hz in iio user space as displayed in iio_info (important later):attr 0: sampling_frequency value: 10000The signal was measured with the iio_readdev | hexdump command and ploted on a graph Blue is 100Hz, 1Vpp amplitude, 1V DC offset sine (ignore orange).The sine looks good and it takes 10kHz/100Hz=100 samples to display a full sine period, so everything works correctly. The ProblemThe sampling rate was then se

STM32MP157D-DK1https://github.com/STMicroelectronics/oe-manifest.git -b refs/tags/openstlinux-6.1-yocto-mickledore-mp1-v23.11.15DISTRO=openstlinux-weston MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.shbitbake st-image-westoni2c and USB touchHow do I find a compatible LCD touch screen for STM32MP157D-DK1?Also, I need a guide to set up the driver.I am not sure which of the USB type and I2C type is better in terms of price, reliability, and driver settings.Please, help me.

Hi, I’m new to the stm32mp15 series and I’ve been trying to convert code over from a previous microcontroller (stm32f429i-disc1) onto my new MPU. I try to read an input voltage value by running the HAL_ADC_GetValue driver but when I run live expressions to read the variable for my adc value, it is just maxed out at whatever I set the resolution to be (i.e., ADC1 resolution is 12 bits so the value is stuck at 4095). I use STM32CubeMX right now, I enabled continuous conversions but I get stuck at this 4095 value every time I debug and run. Any help or suggestions?

I compiled the linux kernel uImage and corresponding .dtb file with CubeIDE.Then I mounted the st-image-bootfs-openstlinux-weston-stm32mp1.ext4 and changed the extlinux.conf inside the folder /bootfs/mmc0_extlinux to    # Generic Distro Configuration file generated by OpenEmbedded MENU BACKGROUND /splash_landscape.bmp TIMEOUT 20 LABEL OpenSTLinux KERNEL /uImage FDTDIR /stm32mp151a-stm32-computer-firmware-mx.dtb INITRD /st-image-resize-initrd APPEND root=PARTUUID=e91c4e10-16e6-4c0e-bd0e-77becf4a3582 rootwait rw console=${console},${baudrate}    Then I successfully flashed my emmc0 and U-boot started the linux kernel. I have some thoughts about the UART output log.Does my processor communicate with my PMIC?Why could it not find the /stm32mp151a-stm32-computer-firmware-mx.dtb file at the beginning of the log?Is my Ethernet working? I cannot se any LED-lamp blinking when I plug in the cable, only the orange LED is active, but not blinking.Why doe

Hi Team,             We are currently working on a UAV detection project and are in the process of implementing Fast Fourier Transform (FFT) for signal processing. Our setup includes an ADC with a data rate of 1 MSPS (Mega Samples Per Second). We are looking for a suitable Digital Signal Processor (DSP) that can efficiently handle this data rate and perform real-time FFT processing.Could you please recommend a DSP that would be best suited for our application? Additionally, if there are any available FFT driver files or libraries compatible with the suggested DSP, I would greatly appreciate it if you could provide those references or links.Thank you in advance for your assistance.Best regards,Aravind

I don't have the knowledge to look at the LCD touch screen specifications to determine if it can be used on my board.I am looking for a 7-inch LCD touch screen that can be used with openstlinux on STM32MP157D-DK1.openstlinux was set up like this:repo init -u https://github.com/STMicroelectronics/oe-manifest.git -b refs/tags/openstlinux-6.1-yocto-micckledore-mp1-v23.11.15repo syncDISTRO=openstlinux-weston MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.shbitbake -k st-image-westonLinux stm32mp1 6.1.28 #1 SMP PREEMPT Thu May 11 14:04:52 UTC 2023 armv7l GNU/LinuxPlease help me.

I compiled the linux kernel with STM32CubeIDE and notice that the linux kernel vmlinux is about 242 Mb.Why so large?Or do I looking at the wrong folder? I'm standing inside the build folder.

Hello I have built the st-example-image-qt using openstlinux(Openstlinux-5.15-yocto-kirkstone-mp1-v23.07.26)  to run a qt application for stm32mp157f-dk2 board.I could run the application the application successfully.It would be very helpful to move forward with my further development, if i could get the clarifications regarding the below mentioned points :1.How to enable window manager support in the example image that i am working with.2.How to implement  debugging of  QT Application using remote gdb server.3.How to display on application on DSI and HDMI simultaneously.  Thanks in AdvanceSrikanth      

Hi,I want to create a custom machine for my board. I've found the wiki page "how to create your own machine" but this assumes you create your own layer/machine inside meta-st, but I want my machine to be inside /layers/.I want this outside meta-st because I want to add the machine inside a git repo, meta-st-stm32mp-addons is already a git repo on its own.I want to setup my distribution package the following way, is this possible, and how?repo init -u https://github.com/STMicroelectronics/oe-manifest.git -b refs/tags/openstlinux-6.1-yocto-mickledore-mp1-v23.06.21repo syncgit clone <git server/repo that contains custom layer + machine> ./layers/meta-mylayer/DISTRO=openstlinux-weston MACHINE=my-custom-machine(inside meta-mylayer) source layers/meta-st/scripts/envsetup.shbitbake st-image-core 

I have compiled.OpteeTF-AU-bootLinuxAnd it seems to work well. I have also tried to implement a pre-made OpenSTLinux from the Source files. And it seems to work well too. I haven't got any terminal up and running. I can only see the display output of messages when I start it up.Notice that the kernel comes from STM32MP157 and before the kernel startup, it's from STM32MP151. That's why you see that the MAC address is not set, but once linux kernel is started, you can see inside the log that the MAC address is set to "56:bf:8f:58:f8:31".https://pastebin.com/QTV4qbHrI need to create bootfs, vendorfs, userfs and rootfs.ext4, so what should I do next? Should I create empty .ext4 files and then mount the .ext4 files and later fill them with...?  

Hi ST Community, @Erwan SZYMANSKI I’ve been working on integrating a Qt example from ~/Qt/Examples/Qt-6.7.2/quickcontrols/imagine into my custom Yocto layer for an STM32 board. I created a recipe for this and updated my local.conf accordingly. After building the image and flashing it to my board, I encountered the following error when running the application. I have added my .bb recipe file and local.conf file. (I have qt5 layer installed too) nesnes@nesnes-ABRA-A5-V19-2:~/STM32MPU-Ecosystem-v5.1.0/Distribution-Package/build-openstlinuxweston-stm32mp15-disco$ bitbake automotive NOTE: Started PRServer with DBfile: /home/nesnes/STM32MPU-Ecosystem-v5.1.0/Distribution-Package/build-openstlinuxweston-stm32mp15-disco/cache/prserv.sqlite3, Address: 127.0.0.1:33289, PID: 89725 Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:00 Loade

The 'of_device_id' in my module is as follows:static const struct of_device_id gcnano_of_match[] = { { .compatible = "st,gcnano" }, { .compatible = "vivante,gc" }, { /* end node */ } };In the device tree:compatible = "vivante,gc";When using the 'modprobe' command to load the module, it was unable to match successfully and the 'probe' function of the module was not executed. The 'compatible' property of the module is the same as the 'compatible' property of the device tree, but I changed both the 'compatible' property of the module and the device tree to 'vivante_1, gc_1' to match successfully and execute the 'probe' function. I have tried many times to change it to anything, as long as I change it back to 'vivante, gc', it won't work. Has anyone encountered this problem?

Does anyone know how to view and modify the current CPU frequency of STM32MP157D? I also cannot use the following command: root@stm32mp1:/sys# cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 5 (v7l) BogoMIPS : 48.00 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 5 processor : 1 model name : ARMv7 Processor rev 5 (v7l) BogoMIPS : 48.00 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 5 Hardware : STM32 (Device Tree Support) Revision : 0000 Serial : 003C00403132510831323338 root@stm32mp1:/sys# cd / root@stm32mp1:/# cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 5 (v7l) BogoMIPS : 48.00 Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva

x linux-5.15-stm32mp-r2 for our puposes. I have also attached the pps-gpio source code in case it is useful. 

Hi, when trying the new ST BSP release base on linux kernel 6.1.82 on my stm32mp157f-dk2 I noticed that the legacy framebuffer support is not working anymore.this was working perfectly on the previous release with linux kernel 6.1.28.I didn't succeed in getting it working again, here is a fragment of my linux kernel configuration: CONFIG_DRM=yCONFIG_DRM_STM=yCONFIG_DRM_STM_DSI=yCONFIG_DRM_PANEL_ORISETECH_OTM8009A=yCONFIG_DRM_SII902X=yCONFIG_FB=yCONFIG_FB_SIMPLE=yCONFIG_BACKLIGHT_CLASS_DEVICE=yCONFIG_BACKLIGHT_PWM=yCONFIG_BACKLIGHT_GPIO=yCONFIG_FRAMEBUFFER_CONSOLE=yCONFIG_FRAMEBUFFER_CONSOLE_ROTATION=yCONFIG_DRM_FBDEV_EMULATION=yCONFIG_LOGO=ycan you please advice how to get it working again ? I don't plan to use DRM. Best regards

The Linux version I am using is 6.1.28, and the chip is STM32MP157D. Currently, the USB-OTG chip uses FUSB302. I tried the online driver and found some issues. When I plugged in the USB device, there was no response. However, setting the USB-OTG to host or peripheral mode separately is normal, so I suspect it may be a problem with the FUSB302 driver.

I have only one MMC, in this case it's an eMMC on SDMMC2. I have some issues when I loading over the TF-A and the FIP.bin file.Update:I have change the clock frequency to 49.5 MHz and measured the v3v3 signal to 3.3V and the vdd signal to 3.3V as well. I got still the same issue.  &sdmmc2{ pinctrl-names = "default", "opendrain", "sleep"; pinctrl-0 = <&sdmmc2_pins_mx>; pinctrl-1 = <&sdmmc2_opendrain_pins_mx>; pinctrl-2 = <&sdmmc2_sleep_pins_mx>; status = "okay"; /* USER CODE BEGIN sdmmc2 */ non-removable; no-sd; no-sdio; st,neg-edge; bus-width = <8>; vmmc-supply = <&v3v3>; vqmmc-supply = <&vdd>; mmc-ddr-3_3v; /* USER CODE END sdmmc2 */ };  This is the debug output. Here we can see that I have only one eMMC. I don't know if the log says that the eMMC is mounted on 0, or if it's the first index. Second suspect is "Loading Enviroment from nowhere... OK". So that means...what? An empty system?&nb

Hello We have built OpenSTLinux(Openstlinux-6.1-yocto-mickledore-mp1-v23.06.21) for stm32mp157f-dk2 Board and I have built st-image-weston image. Iam new to this Yocto,so I request you to help with the following:How to make changes in dts & dtsi files (u-boot & Linux) and source files and build the image.And Iam working on display, I would like to write an application and run it on the display. So hoping to get help regarding how to add Qt (Qt5) packages and the respective libraries so that i could run a GUI on the display.  Thanks & RegardsSrikanth.R

I never heard about the PER clock. I'm looking inside CubeMX, but I don't see any PER clock at all. I guess it's periferial clock. So how do I start it? My U-boot won't boot. I guess that if PER will be like 24 MHz, then U-boot will continue. Or am I wrong? D/TC:0 0 call_initcalls:40 level 6 stm32mp1_init_lp_states() D/TC:0 0 stm32mp1_init_lp_states:230 Power configuration: shutdown to 6, suspend to 2 D/TC:0 0 call_initcalls:40 level 6 regulator_core_init() D/TC:0 0 call_initcalls:40 level 7 stm32_rng_release() D/TC:0 0 call_initcalls:40 level 7 regulator_core_cleanup() D/TC:0 0 regulator_core_cleanup:916 disable usb33 D/TC:0 0 regulator_core_cleanup:916 disable reg18 D/TC:0 0 regulator_core_cleanup:916 disable reg11 D/TC:0 0 call_initcalls:40 level 7 release_probe_lists() D/TC:0 0 call_finalcalls:59 level 1 release_external_dt() I/TC: Primary CPU switching to normal world boot serial_stm32 serial@40010000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19

Custom STM32MP151A board with 512MB DDR2.I am trying to write via UART communication with STM32CubeProgrammer, but BL32 processing does not start.What should I do to investigate the cause? [2024-01-12 14:11:52.591] NOTICE: CPU: STM32MP151AAC Rev.Z[2024-01-12 14:11:52.591] NOTICE: Model: STMicroelectronics custom STM32CubeMX board - openstlinux-5.15-yocto-kirkstone-mp1-v22.11.23[2024-01-12 14:11:52.623] INFO: PMIC version = 0x21[2024-01-12 14:11:52.623] WARNING: VDD unknown[2024-01-12 14:11:52.623] INFO: Reset reason (0x14):[2024-01-12 14:11:52.696] INFO: Pad Reset from NRST[2024-01-12 14:11:52.696] INFO: FCONF: Reading TB_FW firmware configuration file from: 0x2ffe2000[2024-01-12 14:11:52.696] INFO: FCONF: Reading firmware configuration information for: stm32mp_io[2024-01-12 14:11:52.696] INFO: Using UART[2024-01-12 14:11:52.696] INFO: Instance 8[2024-01-12 14:11:52.696] INFO: Boot used partition fsbl1[2024-01-12 14:11:52.696] NOTICE: BL2: v2.6-stm32mp1-r2.0(debug):v2.6-dirty(a1f0