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I am working with an STM32F303 and trying to generate a PWM signal on TIM3, Channel 1 (PA6). Everything seems to be correctly configured (verified in the debugger – registers appear correct), but there is no PWM signal on PA6. The function responsible for clock configuration worked correctly in the case of USART. In the IRQ handler, the flag registers are set correctly, which I verified using a breakpoint. I would appreciate any help in identifying the possible cause of why the PWM is not activating.          void configureTIMER3(void) { //PA6:D12 RCC -> APB1ENR |= RCC_APB1ENR_TIM3EN; TIM3->PSC = 711; //72mghz TIM3->ARR = 99; //PA6 } void clock_config(void) { RCC->CR |= RCC_CR_HSION; while (!(RCC->CR & RCC_CR_HSIRDY)); RCC->AHBENR |= RCC_AHBENR_GPIOAEN; RCC->APB1ENR |= RCC_APB1ENR_PWREN; // FLASH -> ACR = FLASH_ACR_PRFTBE | FLASH_ACR_PRFTBS | FLASH_ACR_LATENCY_2; RCC->CFGR |= RCC

I'm working on a custom PCB with an STM32H750VB and the ST-link is unable to find the target in both CubeProgrammer and St-link Utility via SWD, below are screenshots of some of the error messages I received and our microcontroller schematic. I've probed all of the VBAT, VDDA, VDDA, and VREF+ and they are all at 3.3V. All of the grounds are connected and are at 0V. I've tested the ST-link with a nucleo board and was able to connect to and program it. I measured VCAP1 and VCAP2 and they were at 1.008V, matching the voltage same pins on our nucleo board. The only odd thing I found was that NRST is at 0V when the board is powered. It's not shorted to GND and has a measured resistance of 16 Mohm. Even though the MCU has internal pullup on NRST, I tried adding an external pullup 10k but was still unable to receive a connection. Could there be an issue that my schematic is indicating? One possibility is that the chip could just be fried since the SWD connector pinout on the custom PCB w

Hello! I am struggling to get TouchGFX fully working on my custom PCB using a STM32u5A9ZJT (LQFP144). Everything compiles correctly and uploads. I can see my Screen1 background and button on my screen so at least that is working. But when I touch my button it does not transition to the next screen (as it does in the TouchGFX simulator when I run this code). Using my debugger i can see that the touch is triggering the external interrupt, and the coordinates are correct in STM32TouchController::sampleTouch but the expected screen transition never occurs. When comparing the IOC files between my working demo project and custom project, I noticed I did not have DCACHE enabled, but when I enable DCACHE I get a HardFault right after registering a touch. Setup background -- I began development with the Riverdi_50STM32u5a9. This was available as a board option on TouchGFX so I was able to create my project through TouchGFX first. However, the STM32u5 used in our custom PCB was not a board

I need IBIS model for part STM32F303RET6.Thanks in advance.

Our requirement was to create a LED driver circuit to power 12 strings of 7 LEDs from a 12V DC supply with a nominal current of 20mA per string.Using the STEVAL-ILL035V1 Development board data for PCB layout guidance and the LED7708 design tool spreadsheet for component selection we successfully built a prototype driver PCB and produced firmware to setup the on-board registers and control the LEDs for our application.Initial results were good and all appeared to be working as expected until we noticed that after a random period (5 to 10 minutes) the LEDs would go off completely and wouldn't recover normal operation untill the device was disabled (DEVCFG0.DEN = 0) and then re-enabled.When the LEDs go off the boost converter goes into a skipping mode of operation but no errors are indicated either from the XFLT pin or the status registers.After disabling/enabling the device, the LEDs would come back on normally but would then go off again some time later. Interestingly this would be a mu

Hi everyone,I'm currently working on a project where I need to interface an STM32 with the L9963E BMS IC from ST. Before developing my own driver, I wanted to check if anyone has already written a C library for this IC and would be willing to share it or provide some guidance.If you have experience with the L9963E and have developed a driver, I'd appreciate any insights, code references, or suggestions you can provide.Thanks in advance!

Hi fellow engineers,I'm trying to create a minimal example of blinky using an RTOS task in STM32CubeIDE. My MCU is a bare STM32F070CBT6. The code ends up in Default_Handler just a moment after the startIOC file is as follows, nothing is configured, except FREERTOS, GPIO port for the LED and TIM6 as timebase source#MicroXplorer Configuration settings - do not modify CAD.formats= CAD.pinconfig= CAD.provider= FREERTOS.IPParameters=Tasks01 FREERTOS.Tasks01=defaultTask,24,128,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL File.Version=6 GPIO.groupedBy=Group By Peripherals KeepUserPlacement=false Mcu.CPN=STM32F070CBT6 Mcu.Family=STM32F0 Mcu.IP0=FREERTOS Mcu.IP1=NVIC Mcu.IP2=RCC Mcu.IP3=SYS Mcu.IPNb=4 Mcu.Name=STM32F070CBTx Mcu.Package=LQFP48 Mcu.Pin0=PC13 Mcu.Pin1=VP_FREERTOS_VS_CMSIS_V2 Mcu.Pin2=VP_SYS_VS_tim6 Mcu.PinsNb=3 Mcu.ThirdPartyNb=0 Mcu.UserConstants= Mcu.UserName=STM32F070CBTx MxCube.Version=6.13.0 MxDb.Version=DB.6.0.130 NVIC.ForceEnableDMAVector=true NVIC.HardFault_IRQn=true\:0

Hi, As I communicated previously I am currently working on upgrading our EV charging solution from OpenSTLinux Ecosystem v4 (Linux kernel 5.15) to Ecosystem v6 (Linux kernel 6.6).The following are my targeted components abd versions to upgrade: Linux Kernel: 6.6-stm32mp-r1 (v6.6.48) Trusted Firmware-A (TF-A): v2.10-stm32mp-r1 U-Boot: v2023.10-stm32mp-r1 OP-TEE: 4.0.0-stm32mp-r1 Now, I started compiling the OP-TEE (4.0.0-stm32mp-r1) and I started getting the following error:  Wrong CFG_DRAM_SIZE 1024MBytes, in device-tree: 512MBytes make[2]: *** [core/arch/arm/plat-stm32mp1/link.mk:17: check_build_variables] Error 1 After doing a bit of looking around I found someone had this issue and the following patch fixed it:  core/arch/arm/plat-stm32mp1/conf.mk flavor_dts_file-157F_DK2 = stm32mp157f-dk2.dts flavor_dts_file-157F_ED1 = stm32mp157f-ed1.dts flavor_dts_file-157F_EV1 = stm32mp157f-ev1.dts +flavor_dts_file-custom = stm32mp157c-cc

Hi, I have a situation where the startup screen is chosen based on a the value of a variable. Is there any way to programmatically add a if else for the startup screen?

Hi AllI have the B-WL5M-SUBG1 board this uses the STM32WL5MOC mcu.The datasheet for the B-WL5M-SUBG1 board says that the RF switch uses PINS:SW_RFPC_5PC_3In the datasheet for the STM32WL5MOC I cannot locate SW_RF it does not exsit.  Also in the datasheet for the B-WL5M-SUBG1 Table 18 I/O assignment there is no reference to SW_RF. I do see SW_CTL?PC_5 and PC_3 are not in the table. I assume these are interal.  Help...  

Hello,I am using a STM32H733VGT on a custom design board. On a fresh project in CubeMX, I tried to activate data cache but the autogenerated code crashes at  SCB_EnableDCache(); . (nothing has been activated on the CubeMX, just the external crystal and debugging port)i tried enabling or disabling MPU as well, same results.I need data cache for activating ethernet. Any help would be highly appreciated.

Hi There,I have setup TIMER4 on STM32G484 device for overflow event and enabled interrupt for events. Everything works fine and as expected with correct fire time if I RESET the CNT register in the ISR. However, if I do not, it seems to do some level of free-running.I only inquire about this, as in all of the STM32 reference manual images, when an overflow event occurs and it's been enabled to detect this, the CNT resets in the peripheral (as long as not single shot mode). So I'm just wanting to confirm that this seems normal and is not a hint that I've misconfigured something. Here are my configuration calls and ISR, I verify the ISR timing on the scope with a GPIO toggling (not shown here).    Register_t rcc_tim4_en = { .address = 0x40021058, .mask = 0x1, .bit_pos = 2 }; Read_Then_Write_Masked(rcc_tim4_en, 0x1); Register_t tim4_cr_dir = { .address = k_tim4_addr + k_timx_cr1_offset, .mask = 0x1, .bit_pos = 4 }; Read_Then_Write_Masked(tim4_cr_dir, 0); // Up coun

Good afternoon,  I am currently trying to calibrate my ADC4 of my NUCLEO U545 and I am using the following function: HAL_ADCEx_Calibration_Start(&hadc4, CalibrationMode, SingleDiff);As said before the first parameter is going to be the ADC4 that I am using but what about the other two parameters?What are they exactly? Do i have to declare the parameters somewhere in the code? Is there anyway that I can see in the documentation what are this parameters and the value i have to introduce to them? And finally, the ADC1 configuration is done the same way as in the ADC4? Thank you,  Marc 

I am currently using stm32f407 with FreeRTOS as operating system in MDK IDE. Recently, When I added a new function ( The new function is ospf routing algorithm, and it is very complex and involves many files ) to my project, I began to encounter hard fought exception. I use the call stack window to check the context of the exception and found that the context is uart_send function. Since I redirect the printf function to uart_send and use it to print debug information so uart_send is called most frequently. When I comment the new added ospf function, everything goes fine, no hard fault exception and uart_send goes fine. So, the hard fault exception comes from the new added ospf function. However, I have no idea which part of the ospf function goes wrong and the call stack window gave nothing useful. I have no idea what to do next? Could anyone tell me what to do next? Is there a procedure to debug a hard falt exception? Thanks in advance!

Hi, I am trying to develop ethernet project on stm32f767zi. I am facing the problem when I am trying to pinging from PC to stm32. "Destination host unreachable." How can I fix this? I read similar topic but anything couldn't solve the problem. I shared the configurations and main code with you. I am waiting for the answers. They will really help me I believe. Have a nice day.  

This is mostly a post to help people who try to google this later since I couldn't find anything. If you look at AN2606 table 197, it lists the minimum startup time for the bootloader on a bunch of different STM32 microcontrollers. For some reason, just two MCUs have "NA" listed including the chip I'm currently working with - the STM32L4R. So if anyone is wondering, my testing has shown that it takes ~90ms from reset/powerup to when the chip will ACK the 0x7F message on USART.I am curious though, does anyone know why no time is listed for these chips?

Hi everyone, I'm currently experiencing a strange crash on a STM32G473 and I'm a bit stumped on how to debug it. First the crash: The system is a STM32G473 running FreeRTOS V10.5.1. I have a simple FDCAN ISR which takes the incoming CAN frames and pushes it to a FreeRTOS queue for use in user space in a task; nothing fancy except this, just transforming the data to a nicer structure and clearing the FIFO and so on. During high bus loads however, the FDCAN ISR will sometimes fire during a FreeRTOS context switch. When it does, the system crashes, which is a problem in and of itself, but the main issue is that the NMI is triggered and not the Hardfault. SRAM Parity is enabled, but not Clock Security. Attached is the NMI Handler. I'm checking every bit in HFSR, CFSR, AFSR, The parity error bit and the flash ecc bit and even the css bit are checked. I'm stepping through the function and checking if anything could have triggered the NMI. None of the relevant bits are set to 1 howe

Recently, I have been working on a project that intends to utilize the v9.x bootloader on an STM32L471VGT6 through the SPI 2 port. When utilizing the write memory command, I would find that the STM32L4 would occasionally have 0xFFFFFFFFFFFFFFFF written to its flash rather than the data I had requested. The frequency of this error increased the higher the baud rate of the SPI was and I found the issue was also much more prevalent in polling mode vs DMA mode. I happened to be reading through AN2606 and found in the version history for the L496 that theres is a known limitation on that processor with SPI writes. The behaviour listed was identical to what I was observing on the L4 and thankfully, the listed WA1 also solved the issue for the L4. Thus, I believe that the SPI write failure described for the L496 bootloader also exists on the L47 family and is currently undocumented. 

I am working on a STM32H723 microcontroller and I am trying to use and SPI communication in mixed mode, i.e. normal and DMA.The reason I need this is because I have a third party software stack for a device that is set up in a certain way, and it cyclically has to send small packets before sendind a big packet of user data. The application requires hard real-timeness so I want this exchange to be as fast and as little CPU blocking as possible. Considering these transfers must follow a certain order and that the stack I'm using is not organised as a state machine, I can only send the little packets in blocking mode, but then I'd like to send the big packet in DMA mode. The problem I'm encountering is that after using once the SPI transfer in DMA mode, the blocking transfers don't work anymore. When debugging I see that the periphery becomes permanently busy when trying to perform a normal transfer after using it in DMA mode in the previous cycle. I'd like to know whether it's

Hello, I have a question about LWIP functionality.I'd like to know if it's possible to redirect a tcp request received on the pppos interface, to a device that is connected onto the ethernet interface and listening on the desired port.Thanks in advance!

 I am working on a prototype board using the STM32H725VGT, based on an existing custom board where LWIP/RTOS Ethernet is already working. Since I have a preference to keep the same MCU for the next design, I am evaluating its ability to support an 8-bit wide data bus with a strobe clock and DMA write-only transfers. I have a few specific questions:1. OctoSPI Availability:• In STM32CubeIDE, the OctoSPI peripheral is disabled for this MCU/package.• I could not find a clear reason in the datasheet or reference manual. Why is it unavailable, and is there any way to enable it?2. FMC Peripheral for 8-bit Bus:• The Flexible Memory Controller (FMC) seems to allow different configurations depending on the package.• Some STM32H725 variants have different FMC modes available. Why do FMC options differ between STM32H725 packages?• Would LCD mode be a viable alternative to achieve a DMA-driven 8-bit wide write bus with a strobe clock?3. Alternative Solutions:• If OctoSPI is unavailable an

Hi community!I'm using Touchgfx 4.24.1 with a STM32H753ZIT6, integrated to a 1024x600 (RGB565) display. We use double frame buffer in an external SDRAM (parallel) with DMA2D enabled. This is a OEM custom board design for us, so the hardware is already validated.Application is running with FreeRTOS.My question to this thread is about the Modal Window.We design a pop up question in our application that have been a weird behaiviour.Always I call the popup.show() or popup.hide(), the entire screen is redraw. I believe it's true, specially if we apply a shade color with shade alpha higher than 0, am I correct?I do not use the popup.show() or popup.hide() frequently, it only are used after an button callback.The weird behavior using Modal is when it show or hide, affect another widgets in my view, specially the TextArea. Sometimes the a character disappear or just swap to '?'.About the '?', I double check the Typographies is everthing is OK, otherwise with/without the modal I always wil

Im building some phase shifting control sensing for a Dual Active Bridge.Im using TIMA and TIMD (shown in pictures) in retrigerable single mode, both signals are triggered by sepparate CR from the master timer. https://community.st.com/t5/stm32-mcus-products/synching-hrtim-s-tima-and-timb/td-p/770972Im trying to trigger ADC measurements only on the high side of the PWM but im getting low side aswel.:( , i dont want those 0s there  Is there any way of using PWM in centered mode and also just triggering ADC measurements in high PWM period?

Hi,I am encountering a hard fault on my STM32F407ZG when using snprintf(). We are using FreeRTOS for the development.The system resets due to a precise data access violation (PRECISERR).Below is the fault status: HFSR: 0x40000000 BFAR: 0x38383600 BF: 0x82 PC: 0x0806D62E at "_Balloc"  This error occurs randomly after multiple calls to snprintf(). Below is a simplified version of my actual code: #define BUF_SIZE 10 char temp_str[9][BUF_SIZE]; float temp[9]; for (int n = 0; n < 9; n++) { snprintf(temp_str[n], BUF_SIZE, "%.3g", temp[n]); } Fault Trace: task1() → snprintf() → _svfprintf_r() → _dtoa_r() → _Balloc() → <signal handler called>() → HardFault_Handler() at STM32f4xx_it.c Memory Layout (Snippet from Linker Script): /* Entry Point */ ENTRY(Reset_Handler) /* Highest address of the user mode stack */ _estack = 0x20020000; /* end of RAM */ _Min_Heap_Size = 0x200; /* required amount of heap */ _Min_Stack_Size = 0x400; /* requir

Hi,We are working on a board with the STM32H7S7Z8J6 in a BG144 package. We use cubemx to create the correct pinout for this part, but we see the datasheet has different pinout then the CubeMX tool. Is this a bug in CubeMX?