STM32 MPUs Embedded software and solutions

Hi everyone, i am trying to run Distribution package from the STM on UBUNTU. It works fine with normal source command and make a build directory just by the folder of 'layers'. but how can i add my own build directory e.g. /mybuild/build_folder? I have tried the BUILD_DIR="dir" but it doesnt work and gives an error of ..[source layers/openembedded-core/oe-init-build-env][from nothing]Error: TEMPLATECONF value points to nonexistent directory '../../../layers/meta-st/meta-st-openstlinux/conf/template'

Hi,I execute the following commands according to the wiki:(I am sure accept the EULA)PC $> DISTRO=openstlinux-eglfs MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.shPC $> bitbake st-example-image-qtThe following is part of the terminal output :(bitbake st-example-image-qt)NOTE: Executing Tasks ERROR: tf-a-stm32mp-2.2.r1-r0 do_compile: oe_runmake failed ERROR: tf-a-stm32mp-2.2.r1-r0 do_compile: Execution of '../openstlinux-5.4-dunfell-mp1-20-06-24/build-openstlinuxeglfs-stm32mp1/tmp-glibc/work/stm32mp1-ostl-linux-gnueabi/tf-a-stm32mp/2.2.r1-r0/temp/run.do_compile.12684' failed with exit code 1: make: Entering directory '../openstlinux-5.4-dunfell-mp1-20-06-24/build-openstlinuxeglfs-stm32mp1/tmp-glibc/work-shared/stm32mp1/tfa-source' make: *** No targets specified and no makefile found. Stop. make: Leaving directory '../openstlinux-5.4-dunfell-mp1-20-06-24/build-openstlinuxeglfs-stm32mp1/tmp-glibc/work-shared/stm32mp1/tfa-source' WARNING: exit code 1 from a shell command.

The program can not be uploaded under the dunfell distribution via CUBEIDE 1.3.1 to the target system. Using the thud distribution, target uploads works.Are there any hidden upload scripts in the CUBEIDE - how to debug the debug upload?Which yocto packages are necessary to cooperate with the CUBEIDE?

Hi all​​I want to implement dual display using STM32MP157C chip and OpenSTLinux system.Is it possible to implement dual display using MIPI DSI / LTDC / HDMI-CEC?If you know the answer above, please reply.​Regards​Machilus

I am testing Ethernet on the STM32MP1 (on both the EV1 and DK2 eval boards) and seeing slow link up times when the board is connected to a Gigabit Ethernet switch. Here's an excerpt from the dmesg traces showing link up times of 6-7 seconds:[ 8.931934] Generic PHY stmmac-0:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=stmmac-0:00, irq=POLL) [ 8.952777] dwmac4: Master AXI performs any burst length [ 8.956664] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found [ 8.964160] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported [ 8.972895] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock [ 14.169871] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/txSince my application does not really need Gigabit Ethernet, I tried limiting the speed to 100 Mbps in the device tree, as described here: https://wiki.st.com/stm32mpu/wiki/Ethernet_device_tree_configurationHowever the results are still similar; typical li

Apparently it is not possible to set a custom baud rates for UARTs on the STM32MP1.ioctl TIOCSSERIAL fails. With a USB UART dongle that supports custom baud rates this works. Is there a something that can be changed in the device tree or config to enable custom baud rate support on the STM32MP1 U(S)ARTS ? The base rate seems 4MHz so that should be sufficient for several custom baud rates. Looked at stm32-usart.c but did not find supporting code. Custom baud rate is crucial as the serial device connected must be used with a non standard baud rate. Edit: after looking at stm32-uart.c it seems it is not supporting ioctl. Adding this support looks to be pretty straightforward by adding the ioctl call and the 2 or 3 needed functions to set and get the user info together with the magic baudrate hack. The driver seems to use uart structure instead of the tty structures so I did not get far changing the driver.. A developer familiar with the driver probably could do this in a day. If STM

Hello,I am currently initializing my STM32MP157CAC3 (TFBGA361) with CubeMX.The processor's datasheet lists USB_OTG_FS functionality as additional functions on PA11 / PA12 but there is no such selection inside CubeMX. In general, there is no USB_OTG_FS functionality listed (only USB_OTG_HS, which I can't use because the pins are already used by USB_HS2).Is it possible to configure this peripheral inside CubeMX?MPU: STM32MP157CAC3CubeMX Version: 5.6.0.202002181639MPU Firmware Package: V1.2.0

Hi,we were facing trouble booting the Ecosystem 2.0 with the new U-Boot (v2020.01-stm32mp-r1). We are using buildroot as the tool to build our distribution. With the Ecosystem 1.2 we could build everything perfectly and the booting was fine too. We used your Github to get the sources for the trusted boot chain (TF-A, OP-TEE, U-Boot, Kernel).Recently we migrated to the new Ecosystem 2.0. When using the sources from your github directly we encountered two problems:The Kernel wasn't able to load. The problem was a wrong .config file. We used your release from the wiki (the archive file with the patches) to reconstruct the .config file from that. With this new .config file it worked, the kernel got loaded. Just want to point out, that using the 'default' .config file from your github didn't work for us in case it is meant to work straight away.The other problem we were facing is that the U-Boot did write the environment variables to the MMC (we have a DK2 board so in that case to the SD ca

Hardware: STM32MP157C-DK2, VL6180 breakout from SparkfunSoftware: CubeMX IDE (1.3.0), buildroot (following the guide from Bootlin here)I'm trying to use the M4 core to communicate with an I2C sensor. I successfully talked with the sensor on the Linux side so I'm confident the wiring and hardware is good.I edited the DTS to enable the m4_i2c5 per the example provided by ST. &m4_i2c5 { pinctrl-names = "rproc_default"; pinctrl-0 = <&i2c5_pins_a>; status = "okay"; };I've also tried many variations of the following, with and without pinctrl statements:&i2c5 { status = "disabled"; };   &m4_i2c5 { status = "okay"; };From CubeMX IDE:Main initialization and while(1):/* Initialize all configured peripherals */ MX_GPIO_Init(); MX_I2C5_Init(); /* USER CODE BEGIN 2 */ gpio_init_structure.Pin = GPIO_PIN_7 ; gpio_init_structure.Mode = GPIO_MODE_OUTPUT_PP; gpio_init_structure.Pull = GPIO_PULLUP; gpio_init_structure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Ini

Hi,we are currently evaluate the STM32MP for a project and we want to ensure that we can handle all errataissues that concern our usage scenario.In Errata are the points: 2.6.1 to 2.6.4 that discribe DMAMUX issues. At this point my question is:Does Linuxdrivers use the DMAMUX module in STM32MP1 ?We dont find any codesnipets where the kernel is manipulating registers with this module.Best regards,Niklas 

Hello guys.​​I am proceeding in the manner provided on the WIKI page(https://wiki.st.com/stm32mpu/wiki/STM32MP1_Distribution_Package).​However, the following problems still occur in Step 6.​[error codes]-----------------------------------------------------------------------------------------------------------------------WARNING: iso-codes-4.4-r0 do_fetch: Failed to fetch URL git://salsa.debian.org/iso-codes-team/iso-codes.git;protocol=http, attempting MIRRORS if availableERROR: iso-codes-4.4-r0 do_fetch: Fetcher failure: Unable to find revision 38edb926592954b87eb527124da0ec68d2a748f3 in branch master even from upstreamERROR: iso-codes-4.4-r0 do_fetch: Fetcher failure for URL: 'git://salsa.debian.org/iso-codes-team/iso-codes.git;protocol=http'. Unable to fetch URL from any source.ERROR: Logfile of failure stored in: /home/parksh/STM32MPU_EV1_Workspace/SDK/Distribution-Package/openstlinux-5.4-dunfell-mp1-20-06-24/build-openstlinuxweston-stm32mp1/tmp-glibc/work/all-ostl-linux/iso-codes/4

Echo demo application works fine, but when launching ADC example it fails after transferring the elf.Windows host. DK2 board./Peter

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Hi All,I'm coding last from 6 years for embedded system projects. I have good knowledge in bare metal programming. I want learn Linux and device driver implementation using Linux.Please suggest me a board, with which I can start my Linux learning journey. Thanks,Basava

Hi, I have an STM32MP157C-DK2 reference board and it is booting with yocto linux.From the bootlog I came to know that reset reason is checked in the Primary Bootloader by reading a register from the file tf-a-stm32mp/plat/st/stm32mp1/bl2_plat_setup.c uint32_t rstsr = mmio_read_32(stm32mp_rcc_base() + RCC_MP_RSTSCLRR);   Now I want to know the reason in the uboot level before lauching the kenel image to add an extra environmental variable in uboot.I tried to read the register using readl(),_raw_readl() API's but I was throwing data abort error while booting and the board gets reboot.So I need help w.r.t the way to read register or any other way to get the reset reason information.RegardsSrikanth.

To bootup STM32MP157 from SD card, the layout for SD is partition#1, u-boot-spl.stm32, first copy of first stage bootloader partition#2, u-boot-spl.stm32, second copy of first stage bootloader partition#3, u-boot.img, second stage bootloader partition#4, rfs.ext4, root file system   here there is single copy of second stage bootloader, if there is power off during flashing firmware, uboot on partition#3 might be corrupted and then my device would not be able to bootup, I would like to change the partition layout to partition#1, u-boot-spl.stm32, first copy of first stage bootloader partition#2, u-boot-spl.stm32, second copy of first stage bootloader partition#3, u-boot.img, first copy of second stage bootloader partition#4, u-boot.img, second copy of second stage bootloader partition#5, rfs.ext4, root file system   and modify the spl first stage bootloader to add in check, if it detect 1st copy of uboot is corrupted, then it will load second copy instead, so far haven't seen

Hi,i try to use a ADM DMA with the board in object.I generate the code with CUBE MX and i add only the function HAL_ADC_Start_DMA(&hadc1, (uint32_t*)&buff, 1); before the while loop in the main.After i start the ADC, the hadc1.State remains in HAL_ADC_STATE_REG_BUSY and the DMA2_Stream0_IRQHandler never happens.I attach the .ioc file of the project.Someone can help me?Thanks a lot

Hello,I am working on a project that acquires ADC readings and saves them into a buffer in the M4 side of STM32mp157 chip on DK2 board, now I need to build a kernel module that copies the saved buffer from the SRAM to DDR on the A7 side when a certain interrupt is triggered.As I am a beginner in embedded linux world I am wondering about the way to do this, I tried memcpy() at first but errors arise when inserting the module (Can't page virtual address error), I also tried converting the SRAM address from physical to virtual before memcpy() but that didn't work as well.Is there a direct way to copy data between the memories like memcpy() or do I need to use DMA from the kernel module to copy the data, if the DMA is the way, sharing an example would be great.Thanks

I use STM32MP151CAA3 mounted on my own board.I want to start to count up TIM3 in PWM generation mode in Cortex-M4.​I have written following code, However, ​TIM3 doesn't start to count up (After Line 56, TIM3_CNT value doesn't change at all).In this code, PB04 port is used as PWM output port.​void TIM3_Count_Start(void) { TIM_HandleTypeDef m_handleTim3; TIM_OC_InitTypeDef sConfigOC; TIM_SlaveConfigTypeDef sSlaveConfig; TIM_MasterConfigTypeDef sMasterConfig; GPIO_InitTypeDef GPIO_InitStruct;   /* Peripheral clock enable */ __TIM3_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_4; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_LOW; GPIO_InitStruct.Alternate = GPIO_AF2_TIM3; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);   m_handleTim3.Instance = TIM3; m_handleTim3.Init.Prescaler = 0; m_handleTim3.Init.CounterMode = TIM_COUNTERMODE_UP; m_handleTim3.Init.Period = 0; m_handleTim3.Init.ClockDivision = TIM_

I'd like to use aiohttp on OpenSTLinux but when I try to install it complains about needing Python 3.6+.Is there a straightforward way to upgrade to a new Python? I'm running the STM32MP1 DK2 board.Thanks,Andrew

Dear STM engineers and community,I'm working with STM32MP157-DK2 (Developer-Package 1.2) and an evaluation board for ADAU1977 ADC from Analog Devices. Desired setup entails using the external codec as the master of I2S communication (the same as with the onboard Cirrus codec on the board).Following the great documentation provided by the wiki pages (kudos to the teams working on that!) I have almost managed to get everything working perfectly.In order to get to this point I have done the following:Desoldered SB1 through SB4, and then soldered SB13 through SB16 in order to disconnect onboard codec from SAI2 and access it from the GPIO headerAdded the codec_of_xlate_dai_id in the source of the manufacturers driver according to: https://wiki.st.com/stm32mpu/wiki/SAI_device_tree_configurationIncluded the source files of the edited codec driver through kconfing and menuconfig and configured them as modularEdited the device tree (stm32mp157c-dk1.dts) according to all available documentation

Hello dear.​I solved all errors and warnings.But I am getting a do_compile error and I can't figure out the cause, so I need help.I used the devtool build cherry0 command and bitbake cherry0 causes the same situation.The build message is:-------------------------------------------------------------------moonlive@kheng:~/work/STM32MP1/Distribution-Package/openstlinux-20-02-19/build-openstlinuxeglfs-stm32mp1/workspace$ devtool build cherry0NOTE: Starting bitbake server...NOTE: Started PRServer with DBfile: /home/moonlive/work/STM32MP1/Distribution-Package/openstlinux-20-02-19/build-openstlinuxeglfs-stm32mp1/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 42503, PID: 7602WARNING: You have included the meta-gnome layer, but 'x11' has not been enabled in your DISTRO_FEATURES. Some bbappend files may not take effect. See the meta-gnome README for details on enabling meta-gnome support.Loading cache: 100% |############################################################################################

Hi,I'm testing the UART_Receive_Transmit_Console example from STM32Cube_FW_MP1_V1.2.0 on the STM32MP1-DK1 discovery board. An HAL_ERROR is raised during the HAL_UART_Init and it seems that the function UART_SetConfig cannot find or set the clocksource correctly. I have set the PCLK1 clock in the u-boot and tf-a .dts files and I'm using a linux image with this setting.Is this function UART_SetConfig from the stm32mp1xx_hal_uart.c file only working in engineering mode or should it work also in normal mode?François

We made device tree for u-boot of stm32151c. But it can't work i2c4 for STPMIC1. PZ4,PZ5 is correctly connected to STMPIC1 with pull-up resistance.SDA,SCL has no signal.Attached is a device tree file.Please let me know what additional point to review.u-boot log message.************************************************************U-Boot SPL 2018.11-stm32mp-r4 (Jun 17 2020 - 11:05:13 +0900)Model: STMicroelectronics custom STM32CubeMX boardRAM: DDR3-DDR3L 16bits 533000Khzstpmic1_read: failed to read register 0x27 : -110ddr power init failedresetting ...U-Boot SPL 2018.11-stm32mp-r4 (Jun 17 2020 - 11:05:13 +0900)Model: STMicroelectronics custom STM32CubeMX boardRAM: DDR3-DDR3L 16bits 533000Khzstpmic1_read: failed to read register 0x27 : -110ddr power init failedresetting ...************************************************************

Hi, i am running yocto on STM32MP157 C reference board,Now I want use the fw_printenv from the user space for that I have found the recipe in the BSP i.e sources/poky/meta/recipes-bsp/u-boot/u-boot-fw-utils_2018.07.bb but if I include u-boot-fw-utils in the st-image-core.bb file and try to build I was throwing errors as below:make -f ./scripts/Makefile.build obj=scripts/basic| rm -f .tmp_quiet_recordmcount| make -f ./scripts/Makefile.build obj=scripts/kconfig stm32mp15_trusted_defconfig| scripts/kconfig/conf --defconfig=arch/../configs/stm32mp15_trusted_defconfig Kconfig| ***| *** Can't find default configuration "arch/../configs/stm32mp15_trusted_defconfig"!| ***| scripts/kconfig/Makefile:128: recipe for target 'stm32mp15_trusted_defconfig' failed| make[1]: *** [stm32mp15_trusted_defconfig] Error 1| Makefile:492: recipe for target 'stm32mp15_trusted_defconfig' failed| make: *** [stm32mp15_trusted_defconfig] Error 2| ERROR: oe_runmake failed| WARNING: exit code 1 from a shell comm