STM32 MCUs Products

Hello,I am working with the STM32U585AI using OCTOSPI2 to interface with the IS66WVO32M8 32 Mbyte ISSI OctalRAM. Currently I am facing an issue of read operations failing for both register and memory access, both in and out of OPI DTR mode. Register reads return a value of 0x8080 or 0x8888. Memory reads (using both HAL_OSPI_Receive() and HAL_OSPI_Receive_DMA() return some sequence of 0x80s and 0x88s in the amount of data requested (32 byte read returns 32 bytes of 0x80, 0x88, or some combination).EDIT: Dummy cycles in code snippets corrected to both be 16 (based on config being applied to IS66WVO32M8 configuration register).Here is my OCTOSPI2 initialization:void MX_OCTOSPI2_Init(void) { /* USER CODE BEGIN OCTOSPI2_Init 0 */ /* USER CODE END OCTOSPI2_Init 0 */ OSPIM_CfgTypeDef sOspiManagerCfg = {0}; HAL_OSPI_DLYB_CfgTypeDef HAL_OSPI_DLYB_Cfg_Struct = {0}; /* USER CODE BEGIN OCTOSPI2_Init 1 */ /* USER C

Hello, I am experiencing the following issue with the STM32L433RCT microcontroller I am using: when I pull the NRST pin LOW and then release it to HIGH, the microcontroller does not recover from reset. In this case, power cycling the device does not solve the problem either. However, if I disconnect the battery from the circuit and then reapply power, the device starts up normally. This issue occurs mostly during the first boot. After the initial startup is successful, even if I reconnect the battery and pull NRST LOW again, the system does not lock up. I am concerned about what would happen in the field if the device were to freeze and could not recover using a reset.

We have been playing with the NUCLEO-C071RB for a few weeks, waiting for our first revision of a board using the STM32C071KBT to be fabricated and assembled. We got most things going without issue, including USB CDC + HID. Power up of the custom board went smoothly in that there was no smoke, however getting basic things going has been a struggle. Initial notes:1. The MCU is connected to a DFP of a Microchip HUB (USB5744).2. One of the goals was to ensure the HUB could startup / enumerate even when the MCU was blank, and hopefully end up in DFU mode, for initial programming (just enumerated under the HUB vs direct connect to HOST). As such, we did our best to ensure pins were connected such that they do not trigger one of the other boot loops (and for example, get stuck in UART, etc.), or cause odd behavior with the HUB especially. We reviewed AN2606 about a million times. 

This previous thread refershttps://community.st.com/t5/stm32-mcus-products/stm32f4xx-does-going-up-a-package-pin-count-impact-pin-af/td-p/862282The 437 is curiously a very close superset of the 417. Apart from the extra 64k RAM, the only difference is which ADC channel is used to read Vbat. And of course the device ID is changed. This makes the 437 a very easy and useful upgrade from the 407/417.My Q is whether AF mapping is really identical, so that a 417 project can access the additional 437 peripherals (e.g. SPI4,5,6) by going to a larger pin count package.Comparing the data sheets, it does not appear that the 437 gives you any new peripheral access without going to a larger package i.e. it does not offer any new AF flexibility. For example you cannot access SPI4-6 on the QFP100.I am using t

MCU: STM32F767ZI-NUCLEOSTM32CubeIDE Version 1.19.0Hello Everyone!We are trying to make the MCU enter DFU mode through firmware (without connecting BOOT0 and VDD). DFU mode works well, but we do not know how to determine USBD_DFU_APP_DEFAULT_ADD and USBD_DFU_APP_MASK (0x2FFE0000) in order to exit DFU mode in the following code(Line 37 in the code always fails.).typedef void (*pFunction)(void); pFunction JumpToApplication; uint32_t JumpAddress; int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_

Can STM32L051 set LSE be LPUART clock source to wake up the MCU? If yes, how to configure.

Team, I have designed Custom Board with STM32F303Rb device and Having USB FS Communication and PWM Compare Output. I m Using The 8Mhz SMD Crystal (YXC make) : https://www.hxcyic.com/upload/202311/27/202311272250036173.pdf Datasheet States CL = 20 pF , Cs = 3 pF and ESR = 80 ohm. From this post : https://community.st.com/t5/stm32-mcus/how-to-select-a-compatible-crystal-and-load-capacitors-for-stm32/ta-p/780236 Deriving Excel Calculation , CL1=CL2 terms out 33pF. Which I populated On Board. Issue : Sometimes , I am getting Pulse missing Issue during the Run time...Not sure why  I just want to Verify the CL Value I am using is Corect or Not ? Prev

Hi all,I've created a new default project for the STM32N6 Discovery Kit, and set up a simple blinking application using the BSP LED functions. /* USER CODE BEGIN 2 */ BSP_LED_Init(LED_GREEN); while(1) { HAL_Delay(1000); BSP_LED_Toggle(LED_GREEN); } /* USER CODE END 2 */I've noticed that in the Application, HAL_Delay() runs roughly 2× too fast. For example, HAL_Delay(1000) only delays for ~500 ms. I can see this because the LED is blinking too quickly.In this Application, TIM2 is used as the timebase source (I presume because of ThreadX using SysTick).I looked at the TIM2 setup in HAL_InitTick() (inside stm32n6xx_hal_timebase_tim.c). The relevant snippet is: /* Compute TIM2 clock */ uwTimclock = HAL_RCC_GetPCLK1Freq(); /* Compute the prescaler value to have TIM2 counter clock equal to 1MHz */ uwPrescale

Hi,I am trying to configure the internal cooperators in the STM32F051 micro-controller, but in the .ioc file I am able to configure only one Comparator. I require three comparators for my application. Is it possible to configure multiple comparators on the STM32F051 development board? If so, could someone please explain how to configure multiple comparators in the STM32F051 micro-controller?

I would like to implement delay signal output with STM32 MCU.So I use the original signal input for EXT interrupt.EXT interrupt's callback activates the timerIf a timer callback is called after a time delay of the desired value, it is implemented by setting the GPIO pin to HIGH.However, it can be confirmed that the desired amount of delay is achieved, but the timing of the pin becoming HIGH varies each time, and it takes about 1.5 to 1.8us between EXT and TIMER.I would like to know if the idea can be implemented as STM32 MCU series. also posting my Clock Configuration pic 

I am using I2S (SAI) on the STM32L433 nucleo board and using the internal MSI RC as the clock source.I also have a 32.768kHz LSE external crystral which I believe helps to make the MSI RC clock more accurate when used with PLL.Is the internal MSI RC clock suitable for I2S, or do I need to use an external crystal HSE (12.288MHz) ?I do get occasional glitches/clicking but I am using development boards with jumper wires, even a small amount of movement with these wires cause issues.The clock configuration is below...The STM32 is configured to be the I2S master which receives audio from a bluetooth

Hi, I am using an STM32H755XIH6 MCU in a custom design. I want to use only LDO supply configuration for the internal power regulator that provides the VCORE and I don't really intend to use the SMPS configuration. My schematic has some hardware mistakes, just want to understand their impact before doing a rev. 1. According to RM0399, Section 7.4 - Figure 22, when using LDO supply, do we still need the cap (mentioned) on the VCAP pin? Is it recommended or mandatory? Would it cause major issues if its left floating for example? 1.1. Follow up question on this, is

I do a project with the newer STM32 G , C series and i am curious what are the benefits of external clock vs using the internal clock, because it will save cost and layout space ?

Hello, as in this post i'm linkingIs there a way to use absolute encoders/resolvers ... - STMicroelectronics Communityi need to use a Biss-c absoulte encoder for a servo drive application using BLDC motors with STSPIN32G4, we are testing using EVSPIN32G4.In the workbench i did not find the configuration for directly feedback through absolute Biss-C encoder. Am i missing something?Other way to do this could be go through SPI peripheral to read absolute Biss-C encoders, but as asked in the post linked, how could i use SPI data to be used from BLDC controller?  Thanks to everyone helping. Jackex

Hi.I have Uart pins (Rx/Tx) PA3 and PA2 on STM32F407VET6. Can these pins be changed to I2C (SDA SCL) in the program?Are the pins on STM32 that have been assigned a protocol (SPI/I2C/Uart) constant and cannot be changed or replaced?Thank you.

 The maximum I2C (Standard) Rise Time/Fall Time of STM32F413VGT is stated as 0.1us/0.3us, but STM32 Datasheet says 1us/3us. Please confirm which one is correct.  

Hi fellows,I have a custom board with STM32F407VGT6. The board was able to be programmed via the JTAG (4 wire JTAG interface; Boot pin is pulled low to ground and reset is connected to the JTAG interface (Nrset pin)) with a segger programmer - multiple times at that and can run for hours, however sometimes it code wipes. The board works fine for some time, but only upon boot-up (at random, happened twice thus far) we have seemingly a code-wipe as well as a bricked chip with the RDP set to 0xFF and unable to do anything with the chip. This does not happen during continuous running of the chip. We have this across 2 differently designed boards, which are designed according to the reference manual for power supply and for the tests were supplied with external linear regulator with low noise.   I have seen some posts here but not conclusive solutions or cause for this issue, is it possible to trigger this external

Hello,I have application which go to STOP2 mode once no LPUART/Modbus communication (Running at 32Khz LSI clock) is in progress.Using lptimer for silence timeout logic for UART data frame completion. The code sometimes cause delay during modbus communication.void setLowPowerMode() { clearFaultStatus(); ResetTickMs(); HAL_UARTEx_EnableStopMode(&hlpuart1); HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); ResetTickMs(); Reset_SystemClock();//internally call SystemClock_Config() HAL_LPTIM_Init(&hlptim2); //Need to re-init otherwise doesnt work HAL_LPTIM_Counter_Start(&hlptim2); HAL_UARTEx_DisableStopMode(&hlpuart1); } uint32_t GetTickMs(void) { uint32_t now = HAL_LPTIM_ReadCounter(&hlptim2); uint32_t delta; if (now >= lptim_last_cnt) { delta = now - lptim_last_cnt; } else { delta = 65536U + now - lptim_last_cnt; // w

Hi All,I am trying to send data to SPI1 via DMA1 Stream 0, using a timer to trigger DMA.Currently, I have used TIM4 Channel2 and Enabled DMA Update with DIER register (UDE bit).DMAMUX1 Channel 0 Request is set to 32.So far, this part seems to work: I have used a LED to monitor HT and TC flags of DMA, and it toggles at the speed it should.But the SPI does not send anything (I checked the MOSI and SCK lines with an oscilloscope)... as if TXDR register was not filled by the DMA.Do you have an idea of what is happening?I have checked that my buffer xyDacData is correct (not null), and also I monitored SPI CR1 as well as SPI SR with SWD debug, all seems OK (SR is null, CR1 shows SPE and CSTART at 1).Thank you!(About SSM and SSI bits, I have set these to test, but they should be useless, since I am in master transmitter mode.. /* * FBx_XY.c * * Created on: Sep 10

Hello, i am stuck on UART topic and i have an argument with someone.He states that ReadMemory(0x11) is sent by STM32. Is that really so? Does STM32 at any point sends "0x11" as response? I must be missing something...

Hi in an dual core stm32h7, if we use each iwdg for each cores, when iwdg trigger reset,it will reset the particular core or both the cores will reset.If particular core reset happens means, how to manage the other core from initial boot.Suppose if cm7 IWDG trigger reset, meanwhile cm4 is running on other side, during this time after cm7 reset we have to read the iwdg register, then perform nvic reset?If cm4 iwdg trigger reset, it will affect the other side running cm7 core.  Regards,Srinath  

MCU: STM32H723VET6ADC: ADC1 / ADC2 / ADC3 (12-bit, single-ended)VREF: 3.3 VApplication: Digital Multi meter (DC / AC voltage measurement) Problem DescriptionIn my DMM hardware design, the Analog frontend applies a mid-scale level shift (VREF/2 = 1.65 V) before the ADC input.This is done intentionally to support bipolar AC measurements using a single-ended ADC:  Input signal → amplifier/divider → +1.65V offset → ADC (0–3.3V)As expected:0 V input → ADC reads ~1.65 VPositive/negative AC swings are in aro

I have a custom board with an STM32G051.  The STM32 is a SPI receive only device.  PA1 is SCLK, PA2 is MOSI, PB0 is nSS (which is hardware controlled).  The beginnings of the project where created with CubeMX so the clocks should all be set correctly.The SPI transactions are simple 12-bit data with an active low chip select.  Note that the MISO signal is not connected on the board.  The master device does not read any data from the STM32G051.The SPI peripheral is setup as below: hspi1.Instance = SPI1; hspi1.Init.Mode = SPI_MODE_SLAVE; hspi1.Init.Direction = SP

i have written a driver code to run 4 wire resistive touch panel. I use only 1 adc and change its adc channel during runtime. Like i set X+ and Y+ as output high by default and X- and Y- set as low by default and set X- and y- pull down to make ADC read 0 when not pressed. Basically, I have few functions that change the configuration such as X+ and X- to output, set Y+ to analog and Y- to input to set Y+ and Y- as an output, set X+ to analog and X- to input. read x voltage in previous case and read y voltage in later case. ADC is only one to switch the configuration during runtime and its resolution is 16 bit with 810.5 cycles sampling time.    ISSUES: 1- gpio output 3.3v and ground but its adc measuring voltage is from (0.7 to 1.15 for x axis) and (0.55 to 2.8 for y axis) 2- if i move the wires then its voltage ranges change.   Is this issue related with the firmware de

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