Solved

Hello,I've a project with the STM32G030F6 which use the RTC (SYSCLK=64MHz RTCCLK=32768Hz). During the setting of new date/time I enable the INIT mode with: LL_RTC_EnableInitMode (RTC); while (0u == READ_BIT (RTC->ICSR, RTC_ICSR_INITF)) { } The runtime of this while() loop is from 42µs to over 60µs. In the refernce manuel is descripe 61µs.If the measured timing normal? An how can I reduce it?The application use:RTCWakeUp TimerBackUp RegisterThanks for our help,Bernd

Hello,I've a spezial question about the reading of the RTC date/time. In my project are used the STM32G030F6 with SYSCLK=64MHz and RTCCLK=32768Hz. Per reset value the BYPSHAD=0.Now I read the date/time with the follwoing consecutive two lines: const uint32_t time_u32 = READ_BIT (RTC->TR, (RTC_TR_HT | RTC_TR_HU | RTC_TR_MNT | RTC_TR_MNU | RTC_TR_ST | RTC_TR_SU)); const uint32_t date_u32 = READ_BIT (RTC->DR, (RTC_DR_WDU | RTC_DR_MT | RTC_DR_MU | RTC_DR_DT | RTC_DR_DU | RTC_DR_YT | RTC_DR_YU)); I can change it to reduce the runtime to: const uint32_t time_u32 = RTC->TR; const uint32_t date_u32 = RTC->DR; We have don't use any IRQ's during reading the date/time.In the referenzmanual is describe that the shadow register are set every RTCCLK cycle. Also it is describe that when I have a verry fast SYSCLK than is not used a twice read of the date/time to check if it changed during the read.It is not complete clear when the shadow register are refreshed. In the

Hi, I have managed to get my ipm motor running with hall sensors. I can run the motor with motor pilot no problem. I can run the motor down to zero rpm and in reverse direction. I have it running with a pwm signal generated on an arduino in forward rotation. The code generated by MC Workbench only allows for forward rotation. Can anyone tell if it is actually possible to get the motor to run in forward and reverse with a pwm signal.

STM32H747XICubeIDECubeMXCubeProgrammerWindows 11I am building a static library that will be used by both CM7 and CM4 cores. I have enabled FreeRTOS for each core. How do I link FreeRTOS into my static library?

I'm trying to read ADC2 IN1(PA0 connected to GND) and ADC2 IN2 (PA1 connected to 3.3V). static void MX_ADC2_Init(void) { /* USER CODE BEGIN ADC2_Init 0 */ /* USER CODE END ADC2_Init 0 */ ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC2_Init 1 */ /* USER CODE END ADC2_Init 1 */ /** Common config */ hadc2.Instance = ADC2; hadc2.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc2.Init.Resolution = ADC_RESOLUTION_12B; hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc2.Init.GainCompensation = 0; hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE; hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc2.Init.LowPowerAutoWait = DISABLE; hadc2.Init.ContinuousConvMode = ENABLE; hadc2.Init.NbrOfConversion = 2; hadc2.Init.DiscontinuousConvMode = DISABLE; hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc2.Init.DMAContinuousRequests = ENABLE; hadc2.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; hadc2.

HelloI am designing a board based on the STM32U5A9ZJxQ and I would like to use MIPI as the video output.On stm32 cube IDE it does not show the peripheral to enable it.Is is some kind of bug? Shouldnt be there?  Thank you 

Hello ST experts,I hope this message finds you well!I am writing to request your support for a project involving the Nucleo-WL55JC. I have successfully communicated between two Nucleo boards using RF communication with the SUBGHZ protocol (not LoRa).However, I have encountered difficulties in establishing communication with other RF devices.Could you please assist me in developing an application -similar to the ping-pong example- that can scan RF signals within the range of 150 MHz to 980 MHz?Here you can find the last post.@STTwo-32 Many thanks in advance for your support.Best regards,Zayoud

Hi there!I 've got a project where i use the STM32H757 dual core (Riverdi 7")the M7 core runs freeRTOS with Ethenet (ping and echo OK)the M4 coreruns freeRTOS with ADC  using DMA and some EXTI (working as expected)When starting the M7 core first and then the M4 core for debugging (AN5361 - STLink GDB Server) the Ethernet connection is interrupted (no successfull ping), when the M4 debug session starts. M4 DMA is set behind the user_heap_stack in the .ld file .dma_buffer : { . = ALIGN(8); *(.dma_buffer) } >RAM  Cheers!

I'm updating a text field (textArea with wild card) every tick (only for testing, in practice it will be updated less, and only when invalidated when changed). It updates the field just fine, however the old value remains in the other frame buffer. So the value alternates between the new value and the old value. But only if new text is smaller than old text.Here was my initial code:  void Screen1View::updatePowerState(const char* str) { touchgfx::Unicode::strncpy(textAreaPowerControlStateBuffer, str, TEXTAREAPOWERCONTROLSTATE_SIZE -1); textAreaPowerControlState.resizeToCurrentText(); textAreaPowerControlState.invalidate() }  But this code didn't work when increasing the size. So I tried to invalidate by rectangle instead:  void Screen1View::updatePowerState(const char* str) { Rect invalidatedArea = textAreaPowerControlState.getRect(); invalidatedArea.x=0; // convert to relative rect invalidatedArea.y=0; // convert to relative rect touchgfx::Unicod

Hi ST support team,I'm trying to implement OTA in my application using the BLE-OTA bootloader firmware and test it using BLE sensor application running on a mobile device. I have successfully tested the BLE-OTA using the heart rate sensor OTA application, and everything worked fine. I made the same changes as suggested in the user guide and also referred to the HRSTM OTA application. In my custom BLE firmware, all changes are done, and I can see the reboot OTA characteristics.However, when I start OTA in my firmware, it receives the data on the reboot characteristic, and the application switches to bootloader mode. After switching to bootloader mode, the BLE-OTA application gets stuck and does not start any advertisements or BLE connections. The only difference between my application and the heart rate sensor application is that my application uses FreeRTOS config.While debugging the BLE-OTA application, I found that the OTA app gets stuck in the SHCI_C2_BLE_Init function, specifically

I just wanted to check the validity of an old post from 2022.The VL53L8CX, like other TOF devices returns a 8x8 grid of distances.The distances are tuned, so if a flat surface for example a wall is directly in front of the sensor (sensor is facing the wall with no offset or rotation) at a distance of 1 metre. Then all the 8x8 Zones will report a distance of 1 metre (assuming no floor, ceiling etc..., so there are no other reflections etc...). The measured distances are in fact larger for angles offset from zero, but they compensated for the requirements of the mobile phone manufacturers etc... Is this still true. Link to post:-Solved: VL53L5CX Distances Don't Match Theory - What am I ... - STMicroelectronics Community

Hi, I'm trying to change the value of the register RCC_RDLSICR (RCC reset duration and LSI control register, address offset 0x144). I need to change the Minimum Reset Duration value.In all power management/low power handling manuals for STM32MP15x lines the documentation says that you can change the registers value, but I can't find HOW I can achieve that. I can write them in dts? inside u-boot? please I need clarifications about that. NOTE: I'm using a custom STM32MP153 board with OpenSTLinux distribution on it.  Thanks a lot

I have a circuit with pmic STPMIC1APQR and STM32MP157DAA1 processor. For reference, I take STM32MP157A-EV1.There are cases when STPMIC1APQR does not turn on every time you turn on the power (1 time out of 20-50 turns on). At the same time, the input power of 5V (VIN) is present on it, but there is no output voltage and therefore the processor does not start. When such a situation occurs, only PONKEY_N (PIN 17) helps, then pmic restarts and turns on.Please help.I am attaching a schematic and a piece of the pcb.

I'm working with a nucleo-L432kc board. I use a mac, VSC, Platformio and I use screen as a terminal. I used MXcube to setup a UART to use the VCP. MX cube generates the code. I have followed the instructions from several online sources to get it to work, but no luck seeing any output with "screen". I must be missing something fundamental. Does anyone have working sample code for this board I can look at to see what I'm doing wrong.

Hi ST Community,I am working on a bootloader for my STM32H735 board, and I'm encountering issues with setting the Vector Table Offset Register (VTOR) correctly for my application, which is loaded at address 0x90000000. The main problem I'm facing is that the Ethernet interrupt is not firing as expected, which leads me to believe that the VTOR might not be correctly set.Here's a brief overview of my setup:Bootloader Configuration:My bootloader is running from the internal flash, and it attempts to jump to the application located at 0x90000000. /* Bootloader Code */ #define APPLICATION_ADDRESS 0x90000000 typedef void (*pFunction)(void); pFunction JumpToApplication; void Bootloader_JumpToApplication(void) { /* Disable global interrupts */ __disable_irq(); /* Disable SysTick interrupt */ SysTick->CTRL = 0; /* Initialize user application's Stack Pointer */ __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS); /* Set the Vector Table Offset Register to the application address

Every project in this folder for OSPI in H7 chips using CubeIDE compiles with error, Keil complies without errors 

I am using STM32H745 MCU. My requirement is to receive 33 bits of data on SPI in slave mode. The master transmits 33 clocks. It is not possible to split the data as reconfiguration of SPI in between the clocks is difficult. Is there a way to read partially filled SPI data register? If I know the end of 33 clocks, and if the configure the data size is 32 bits, at the end of 33 clocks I can read 32 bits from the FIFO. The last 1 bit which will be available in the data register is to be read. The data register data doesn’t go to the FIFO for reading until 32 bits are received. How to resolve this issue?

Hi,I am trying to generate waveforms using the STM32H563 microcontroller and several AD5791 DAC ICs. I am using the ADG732 Multiplexer with 5 select lines to connect my CS line to the required DAC IC. A simplified image of the hardware is provided below: I have to generate triangle waveforms on two channels simultaneously. Generating the waveform on one channel at a time works perfectly. However, when I attempt to generate two waveforms on two channels, I get the following output:The two triangle waves have amplitudes of 1.5V and 2.5V, but the output of both channels appears on a single channel, while the second channel remains unchanged. The SPI frequency is 10MHz. I have configured two timers to trigger interrupts based on the frequency and sampling rate of the waveform. I am storing the amplitude values (100 samples) in two different lookup tables. Every time a timer interrupt is triggered, the select value of the multiplexer is changed, and a value from the LUT is transmitted

Running my application in the Simulator, after a few seconds on a screen with a ScrollList I get this assertion. Can anyone tell me what components use excessive amounts of these timer objects, so I can try to work around it?The same code running on the target runs fine.The ScrollListItems have several MoveAnimators, but only a few of them are running an animation. Do MoveAnimators use TimerWidgets?

I'm working on a project using an STM32H7 series MCU with FreeRTOS. I've customized the .ld file to configure the stack and have set up the internal ADC and DMA to continuously read and store ADC values. I've statically assigned the DMA data registers starting at 0x24000000. Initially, my project worked fine, but I needed to increase the execution speed, so I enabled compiler optimizations for speed.However, after enabling optimizations, I started experiencing a HardFault error which I've been unable to resolve. The error occurs only after the optimizations are turned on. Here are the settings and configuration details:MCU: STM32H7 seriesRTOS: FreeRTOSMemory Configuration: Customized .ld file, DMA data registers at 0x24000000Compiler Settings: Optimization for speed enabledI suspect the issue might be related to memory access or alignment due to the optimizations altering how quickly certain operations are executed. Has anyone faced a similar issue, or can anyone suggest potential fixe

STM32F746-Disco board; Windows 10, STM32CubeIDE 1.7.0, empty project, only CMSIS and nothing else.I'm writing an interrupt-based UART transmit driver with ring buffer on registers for the sake of learning (no DMA, that will come later, after I grow some IQ). Reading datasheet, reference manual and programming manual (for NVIC), I think I understand the stuff. The driver is not test-ready yet, it's work in progress, although the setup is done. I want to make sure I understand the stuff correctly.To the point: See the picture attached, top notch paint skills to explain how my uart tx ring buffer works.In written form: I have an array that I use as a ring buffer for transmission. There is a pointer to the element that is currently being sent and the "after last element" pointer. When I reach the last element of array, I move to the beginning of the array. Hence, ring buffer. Now, imagine I'm already sending something. At that moment I have another send request. What I do is I check how mu

Keil projects shows an error when I add more than 65 screens in the project (works fine with less than or equal to 65 screens). I checked this multiple times by creating multiple new projects and even multiple versions of cubemx and touchgfx designers still no luck. I have tried cubemx 5.3, cubemx 5.6, cube mx 6.0 basically every version since 5.3. I even tried diffrent touchgfx designers from 4.10 to 4.15. When I create the same project with more than 65 screens for STM32cubeIDE it works perfectly fine. Here's the procedure I followOpen touchGFX designerSelect my board STM32F469i-DISCO and Blank uiAdd 66 screen and 2-3 buttons Generate projectOpen cubemx file of project and select MDK ARM 5.28.0.0 Keil IDE and generate project for keilOpen project in keil Compile errors in meta.h file which is part of touchgfx framework and not a user fileIf if follow above steps for less than or equal to 65 screens It works fine. And everything works for STM32CubeIDE even 66+ screensYou can easi

Hi there,I'm designing a very compact PCB. For the debug header I'm using 4-wire SWD with a 2x2 header on the board (specifically CLP-102-02-L-D). There's no keying or polarisation meaning that the programming lead could be plugged in in four different orientations, potentially connecting MCU VDD/GND from the ST-LINK to any of the pins on the board. Hopefully this image illustrates the (potential) problem:I haven't been able to find if there is any concern with connecting incorrect pins together. I know MCU VDD is a measured voltage, my only concern would be connecting GND from the ST-LINK to +3V£ on the board side; could this cause a short or is this all protected on the ST-LINK side? I have struggled to find a header that is small enough with some kind of keying to prevent invalid connections, but if there is a real possibility of damage to the board I will need to rethink this!Thank you for your help.

Hi there, I was unable to find any matching for this part below, some bi-directionnal TVS I presume, but "L06" returns nothing.I need your help ^^ thanks.Nicolas.

I have question about STM32H7 QUADSPI clock configuration.It seems STM32H7 contains two different source clocks.If I select HCLK3 as the clock source for the QUADSPI Clock Mux, how is the QUADSPI clock frequency calculated? Regardless of selecting HCLK3, will the QUADSPI clock still be calculated as PLL1Q / (Prescaler + 1)?