STM32 MPUs

Are there any specific kernel config options to get the console to work on UART4?I feel like I've tried every permutation of build, DT, and loading configuration at this point.I'm working on a custom board with a new 'machine' building on the Distribution packageI have the choosen node in the Device Tree with stdout-path set to the aliases uart4, deubg UART options enabled along with early printf, I tried disabling all display and touchscreen options.The output is correctly directed for u-boot and tf-a.I was able to configure and attach the debugger and the kernel appears to be running.

I have a custom board I made with the STM32MP1 and I seemed to have royally messed up the clock circuit. I have an ASDMB-24.000MHZ-LC-T clock chip generating a square wave clock but HSE_OUT is being pulled high which puts the STM32MP1 into analog-bypass mode. The chip does not seem to be booting to the point where I can access USB or UART DFU mode. UART lines are both low and I would expect the TX line to be high until a start bit is sent. I am assuming this is because the chip is not getting clocked properly. Looking to the experts to tell me if this really is the case or if I am chasing a red herring and it should work OK on analog-bypass with a square wave clock. I have attached a photo of the clock signal, best I have right now but I can get a better one later if it's required. I plan on attempting to perform some board surgery to cut the trace pulling the HSE_OUT high and tie it low but was looking for some input before I go do that. PA13 is low as well which I would expect to be

Hi AllWhen building "Eco system V2.1.0" distribution of Custom Board based on STM32MP151C chip, there is a problem that devicetree symbolic link is not created.Symbolic link of custom board devicetree is not created in "tmp-glibc/work-shared/stm32mp1-fiscal/kernel-source/arch/arm/boot/dts" folder."TF-A" and "U-Boot" also do not create symbolic link of custom board device tree.Due to the above, an error occurs because there is no "xxxxxxx.dtb" file when building with the "bitbake st-image-core" command.Please let me know if there is a way to fix it without manually creating the symbolic link.Thanks and regardsMachilus

Hi, I am currently looking at how to enable a GPIO pin on the M4 with the MP157A-DK1 kit. In the datasheet it is unclear to me how I can assign the gpio pin specifically to one of the two processors (A7 or M4) or is this not necessary?Thanks, Rens

I am super new to this and I need guidance. Does anyone have experience with using Android Studio to build an app and then using Bluetooth or WiFi so the app can connect to a STM32 Eval board? Where would be a good place to start? I have found the "STM32MP1 Distribution Package for Android" page here: https://wiki.st.com/stm32mpu-ecosystem-v1/wiki/STM32MP1_Distribution_Package_for_Android#Development_setup but can someone explain what any of this means?

I am using UART5 on an STM32MP151 to communicate with an external processor. The Cortex-A7 is running Linux and DMA is in use for both receive and transmit. Hardware flow control is also enabled and the transfer rate is 6 Mbps. Currently we are running test code to repeatedly send messages between the processors in both directions simultaneously. During this test, eventually the MP151 will send part of a message, and then the transmission will stop and never complete. I have verified this both by examining what is received on the other processor, as well as by using an oscilloscope. Here is the data that I have about the problem:Hardware flow control is not activating in this scenario, as verified by the oscilloscopeThe DMA transfer is still active. This has been verified by noting that the EN bit of the SCR register is still set and the SNDTR register still has the correct count of the remaining bytes that haven't yet been sent.The serial port is still active. This has been verified b

I have an STM32MP157A-DK1 dev board and I have successfully build and flashed the st-image-core (Distribution-Package) and flashed to sdcard.I want to add ModemManager and NetworkManager to the build. I see that meta-oe layer appears to be included and within meta-oe is a recipes-connectivity which contains ModemManager. How can I enable this in the build?Additionally, I don't see NetworkManager in any layers. Is thare an equivalent functionality within another package?Thank you

Helloi'm trying to get started with the STM32MP1 env, and I'm having some issues building the trusted firmware boot image, after following the steps from: https://wiki.st.com/stm32mpu/wiki/STM32MP15_TF-AI'm, building it with the following commands, on the v2.2-stm32mp branch, with gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04) , no changes on the git branch:make distclean   make CROSS_COMPILE=arm-linux-gnueabihf- ARCH=aarch32 ARM_ARCH_MAJOR=7 PLAT=stm32mp1 DTB_FILE_NAME=stm32mp157a-dk1.dtb FDT_SOURCES=fdts/stm32mp157a-dk1.dts DEBUG=1 STM32MP_SDMMC=1 dtbs   make CROSS_COMPILE=arm-linux-gnueabihf- ARCH=aarch32 ARM_ARCH_MAJOR=7 PLAT=stm32mp1 DTB_FILE_NAME=stm32mp157a-dk1.dtb FDT_SOURCES=fdts/stm32mp157a-dk1.dts DEBUG=1 STM32MP_SDMMC=1I can see the following messages on the serial console:NOTICE: CPU: STM32MP157AAC Rev.B NOTICE: Model: STMicroelectronics STM32MP157A-DK1 Discovery Board NOTICE: Board: MB1272 Var1.0 Rev.C-01 INFO: Reset reason (0x15): INFO: Power-on Reset (rst_po

I am installing all of the prerequisites and have some issues. This is on Windows 10 running VirtualBox with a Linux environment running Ubuntu 20.04.1 LTS. Everything seems relatively smooth but some of the apt-get commands don't seem to work, specifically:sudo apt-get updateOKsudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib build-essential chrpath socat cpio python python3 python3-pip python3-pexpect xz-utils debianutils iputils-pingOKsudo apt-get install libsdl1.2-dev xtermOKsudo apt-get install make xsltproc docbook-utils fop dblatex xmltoOKsudo apt-get install python-gitReading package lists... DoneBuilding dependency tree    Reading state information... DonePackage python-git is not available, but is referred to by another package.This may mean that the package is missing, has been obsoleted, oris only available from another sourceHowever the following packages replace it: python-git-docE: Package 'python-git' has no installatio

I executed the following command in linux system:make -f Makefile.sdk all TF_A_CONFIG=trusted FTA_DEVICETREE=stm32mp15c-ev1but there is the following fault information:/bin/sh: 22: stm32wrapper4dbg: not foundI have a try to install it, this is not successful. (sudo spt-get install stm32wrapper4dbg)How to fix this question?

Hello I am trying to curl from a server using this command from my STM32MP157C-DK2curl -i -k -X POST -H "Content-Type: application/json" --data '{ "id":"2","timestamp":"200","data":"100"}' https://dv7knsjzph.execute-api.eu-central-1.amazonaws.com/prod/boxtronic-devices/2/data/but I am gettingcurl: (7) Failed to connect to dv7knsjzph.execute-api.eu-central-1.amazonaws.com port 443: No route to hostvi /etc/hosts/ gives me:127.0.0.1 localhost   127.0.1.1 buildrootHow can I do that. Thank you

Is it possible to boot over UART on the STM32MP157C-DK2? I set the BOOT pins as following:BOOT0 - OFFBOOT1 - OFFI am using the FT232 UART-USB Adapter and have connected the following pins:UART GND - CN16 GNDUART VCC - CN16 3.3VUART TX - CN14 ARD_D1UART RX - CN14 ARD_D0​Here is the CubeProgrammer command and its output:´´´$ STM32_Programmer_CLI -c port=/dev/ttyUSB0     -------------------------------------------------------------------                       STM32CubeProgrammer v2.5.0                      -------------------------------------------------------------------Serial Port /dev/ttyUSB0 is successfully opened.Port configuration: parity = even, baudrate = 115200, data-bit = 8,         &nbsp

Hello,No dev kit is available for STM32MP151x microprocessors, do you know if it is possible to replace the STM32MP157 chip by a STM32MP151 one on the STM32MP157A-DK1 ?I have read that STM32MP1 are pin to pin compatible, but I want to be sure and if someone has already done this, that would be interesting.Thank you in advance.Charles Blanchard

Hello,I'm trying to send a CAN frame with can-utils library on STM32MP157F-EVAL board.I read the following sites [1] and [2] and tried the commands:root@stm32mp1:~# ip link set can0 up type can bitrate 1000000 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 root@stm32mp1:~# cansend can0 055#11223344 write: No buffer space availableno messages are sent and after some trys I get the error: No buffer space available.root@stm32mp1:~# candump can0candump also receives no frames. The opposite station sends can messages and they are arriving the stm32 eval board. I have measu

I am working on STM32MP1 DK2 as a Hobby Project, can anyone suggest me a complex project to get to a linux + RTOS based project developement. I want to get an hands on idea on RTOS + Linux project. I saw a video of Zephyr project with Intel which ran linux and RTOS by partitioning SD Card, I would like to work on such a complex project. Please help me with good resources on such projects?

We have a custom board based on the STM32MP157 series, and are trying to get the TF-A boot chain working.  We have downloaded and compiled the linux kernel, u-boot, and arm-trusted-firmware for the STLinux ecosystem v2.  We can boot to u-boot, and the kernel decompresses and begins running, but it appears that none of the peripheral clocks are accessable (I2C, SPI, SDMMC etc).My question is what part of the boot chain is repsonsible for initilizeing the non-secure rtt clocks? Is it uboot? I don't see any initialization there. I don't think it's the kernel, but please correct me if I am wrong. I see some Cortex M4 code generated by the CubeMX took, is it REQUIRED that the M4 initialize the non-secure rtt clocks?

Hi All​​If you create a distribution with RTL8723BU enabled in the Linux kernel and boot, you will see the error message below.[  30.102790] usb 2-1.2: 1f8: ff ff ff ff ff ff ff ff[  30.106213] usb 2-1.2: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, WiFi=1, BT=1, GPS=0, HI PA=0[  30.118408] usb 2-1.2: RTL8723BU MAC: 34:c9:f0:8d:fc:72[  30.124300] usb 2-1.2: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin[  30.131982] usb 2-1.2: Direct firmware load for rtlwifi/rtl8723bu_nic.bin failed with error -2[  30.141236] usb 2-1.2: request_firmware(rtlwifi/rtl8723bu_nic.bin) failed[  30.146569] usb 2-1.2: Fatal - failed to load firmware[  30.155477] rtl8xxxu: probe of 2-1.2:1.2 failed with error -11If you search for the "rtl8723_nic.bin" file on the entire Linux system, it doesn't exist.Is there any other way to use RTL8723BU in "Ecosystem V2.0.0"?The method shown on the ST WiKi site is not a solution as it assumes

Hello ST Teams!Question, again! I'd like to know if the image "st-image-core" or "st-image-weston" are compatible with the "read-only-rootfs" from yocto append? (thud or dunfell) Well I've already tried on the st-image-core and bitbake compilation failed, saying something about user-fs.Any hints would be welcome!Have a nice confined day!

Hello,I try to build the kernel for the first time on my Ubuntu 18.04 new install.Following the step by step Wiki build kernel.make ARCH=arm uImage vmlinux dtbs LOADADDR=0xC2000040The compilation runs fine for many files until this step.Thank you by advance for any suggestion.Regards*****************drivers/clk/clk-stm32mp1.c:1925:12: error: 'PCLK1' undeclared here (not in a function); did you mean 'PCLK'? 1925 | DIV_TABLE(PCLK1, "pclk1", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB1DIVR, 0,     |           ^~~~~drivers/clk/clk-stm32mp1.c:1260:9: note: in definition of macro 'DIV_TABLE' 1260 | .id = _id,\     |        ^~~drivers/clk/clk-stm32mp1.c:1928:12: error: 'PCLK2' undeclared here (not in a function); did you mean 'PCLK'? 1928 | DIV_TABLE(PCLK2, "pclk2", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB2DIVR, 0,  

Hi, I'm trying to generate secure boot keys using native linux tools. I assumed the secureboot format would be documented, but all I found was links to STM32MP_KeyGen.I can use openssl to generate ECDSA keys, and also get publik keys out. I am at teh point where I can take the private key from STM32MP_KeyGen, and convert it to a public key:openssl ec -in private-key.pem -pubout -out public-key.pemHowever, what I can't figure out is how to get the SHA256 hash of the public key in a way that I can burn in the OTP fuses. openssl hash functions give a different result than the one generated by STM32MP_KeyGen. What is the format that the chip expects?

Hello,I am completely newby on embedded linux stuffs.Can any one tell me how to drive any available LED on the STM32MP157C-Dk2 board by using the linux shell commands.Unfortunatelly i did not find the information on the wiki stm32mcu.Thank you by advance.

Hi all.I want to prevent the contents of "RETRAM" from being erased when I run the firmware with m4 rproc on "OpenSTLinux"."RETRAM" is powered by the battery through the VBAT pin to maintain data.To this end, TF-A was also modified to set and maintain the value of "PWR_CR2_RREN" in the "PWR_CR2" registry.In the "Engineering Mode" where M4 Firmware can be run on its own, "RETRAM" data is well maintained. However, when you boot into "OpenSTLinux" and load the firmware into M4 rproc and debug it, the contents of "RETRAM" are initialized.The following is the contents of the "RETRAM" related ld file.MEMORY{ m_interrupts (RX) : ORIGIN = 0x00000000, LENGTH = 0x00000298 m_retram   (RWX) : ORIGIN = 0x00000400, LENGTH = 0x0000FC00 m_text    (RX) : ORIGIN = 0x10000000, LENGTH = 0x00030000 m_data    (RW) : ORIGIN = 0x10030000, LENGTH = 0x00010000 m_ipc_shm  (RW) : ORIGIN = 0x10040000, LENGTH = 0x00008000}SECTIONS{

I have a pair of DK1 boards I just received that I wanted to get working with wifi direct, but neither even can show a wlan0 interface. In the past I have used a DK2 with buildroot and got the wlan0, and a coworker used stock yocto build on the DK2 and said wlan0 was there too. Is there some problem with the DK1?#first check:root@stm32mp1:~# ifconfig -aeth0     Link encap:Ethernet HWaddr 00:80:E1:42:70:CC           UP BROADCAST MULTICAST MTU:1500 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:1000          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)        &nbs

Hi：​Anyone familiar with this issue?When I plug in the network cable, the following information will be printed later:​[ 373.607360] ------------[ cut here ]------------[ 373.610551] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x300/0x304[ 373.618870] NETDEV WATCHDOG: eth0 (stm32-dwmac): transmit queue 0 timed out[ 373.625765] Modules linked in: aes_arm_bs crypto_simd cryptd algif_skcipher brcmfmac cfg80211 galcore(OE) hci_uart brcmutil btbcm stm32_cec spi_stm32 sch_fq_codel ipv6 nf_defrag_ipv6[ 373.642115] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G          OE    5.4.31 #1[ 373.649368] Hardware name: STM32 (Device Tree Support)[ 373.654536] [<c01124dc>] (unwind_backtrace) from [<c010d784>] (show_stack+0x10/0x14)[ 373.662275] [<c010d784>] (show_stack) from [<c0bead54>] (dump_stack+0xb0/0xc4)[ 373.669510] [<c0bead54>] (dump

Hi, I'm trying to make a headless system using the STM32MP153 and I would like to disable all graphical layers in the standard distribution.I'm using openstlinux-5.4-dunfell-mp1-20-06-24 (ECO V2 I believe)I have made my-own distro layer and was able to bitbake st-image-core( have added to my own_distro.conf file:DISTRO_FEATURES_remove = " wayland "DISTRO_FEATURES_remove = " x11 ")Next step is to remove the graphical layers starting with qt5If I do a bitbake-layers show-layers I don't want to find meta-qt5 (or meta-gnome, meta-xfce)Question: how do I do that?BTW I'm using the STM32MP157C evaluation board to get my headless distro up and running.