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STM32World Rant #2 - MYSTERIOUS UNKNOWN MCUJust a short rant about the MYSTERIOUS STM32F402. This MCU does NOT exist in ST's catalog, and yet you can readily buy them in China. In this video I will go through the datasheet, find a comparable MCU which exists and compare them.#STM32 #China #MCU #STM32Worldhttps://www.youtube.com/watch?v=ILUuB6Kaz5U

Hi,I'm looking at implementing USB on my the NUCLEO-64 STM32F303RE EVAL BRD, with of course the STM32F303RE microcontroller. I'm having issues understanding what alternate function is needed for the USB-DM and DP pins. In the datasheet https://www.st.com/resource/en/datasheet/stm32f303re.pdf Table 13 shows that the USB pins are "Additional Functions" on PA11/PA12. I'm not sure what that means? Additionally I'm used to going to Table 14 the alternate function table to see what AF is needed on those 2 pins for USB. However in Table 14 the USB_DM and USB_DP are no where to be found. Your help would be appreciated. Thanks

Hello, I have the following problem - I configured TIM2 of STM32H723 in Encoder Mode following all recommendations in the Reference Manual RM0468, chapter Encoder Interface Mode, p. 1694: • CC1S= 01 (TIMx_CCMR1 register, TI1FP1 mapped on TI1)• CC2S= 01 (TIMx_CCMR2 register, TI2FP2 mapped on TI2)• CC1P and CC1NP = ‘0’ (TIMx_CCER register, TI1FP1 noninverted, TI1FP1=TI1)• CC2P and CC2NP = ‘0’ (TIMx_CCER register, TI2FP2 noninverted, TI2FP2=TI2)• SMS= 011 (TIMx_SMCR register, both inputs are active on both rising and fallingedges)• CEN= 1 (TIMx_CR1 register, Counter is enabled) I also checked these settings in the TIM2 registers in debug mode with halting the micro and they were exactly as recommended. I checked the input quadrature signals - they are there. But still the TIM2 counter value stays 0 and does not change. Any ideas what I might be missing? Thanks a lot, Radek

Hi,I used to run my STM32F303RE at 72Mhz clock from a 8Mhz CMOS oscillator. . Timers8/1 operated at 72Mhz as well. That worked fine. I had to change the CMOS oscillator from 8 to 24Mhz.I tried two modifications, see attachment:a) I changed PLLMul from x9 to x3 and left PREDiv. at /1.b) I changed PREDiv to /3 and left PLLMul at x9.In both cases CubeIDE clocktree was fine with the setup, 72Mhz imput clock at Timers8/1.Eventually now the input clock of the timers is low by factor 9, it is 8Mhz. What did I miss?Thank you.CheersDetlef 

Hi all.I have this piece of code: __HAL_RCC_CORDIC_CLK_ENABLE(); CORDIC->CSR |= CORDIC_CSR_NARGS; CORDIC->CSR |= (CORDIC_CSR_PRECISION_3 | CORDIC_CSR_PRECISION_2 | CORDIC_CSR_PRECISION_1 | CORDIC_CSR_PRECISION_0); CORDIC->CSR |= CORDIC_CSR_FUNC_1; // Phase function (atan2) int32_t a = 1000; int32_t b = 1000; CORDIC->WDATA = a; CORDIC->WDATA = b; volatile double result_from_hw = (double)CORDIC->RDATA / 2147483648.0 * 180.0; volatile double result_from_sw = ((atan2((double)a, (double)b)) / M_PI) * (180.0); __NOP(); __NOP(); __NOP();The result from SW is 45 (as expected).However the result from HW is 43.2.WHY??

Hello STM32 community,I'm relatively new to STM32 development and I'm currently working with the I3G4250D Gyro Sensor on the STM32F411e-Discovery board. I've been using the stm32f411e_discovery_gyroscope.c file provided by STM32Cube to interface with the sensor.I've managed to retrieve data from the sensor using the provided code snippet:BSP_GYRO_GetXYZ(Buffer2); Xval = Buffer2[0]; Yval = Buffer2[1]; Zval = Buffer2[2]; However, the output I'm getting seems to be raw data, and I'm not quite sure how to interpret it correctly. My understanding is that these values represent the raw sensor readings, but I'm unsure how to convert them into meaningful X, Y, and Z values.Could someone please provide guidance on how to properly interpret and convert these raw values into meaningful data? Additionally, if there are any specific calibration steps or formulas that need to be applied to obtain accurate results, I would greatly appreciate any insights on that as well.Thank you in advance for

Software tool: IAR Workbench 9.60#include <stdio.h>#include <math.h>#include <stdlib.h>#include <string.h>#include <intrinsics.h>int putchar( int ch ){    while(!(USART2->ISR&0X0080));   USART2->TDR  = (unsigned char)ch; return ch;} test code:printf("%d\n",ADC_array[0]);printf("%f\n",1.234567); Output on computer:62615       ----correct%f             ----incorrect(should output 1.234567)

I'm working with TouchGFX, in my project I include n files that are needed for the hardware I use, a custom hardware with STM32F429II...They are variable interchange files between the TouchGFX engine and my hardware.The entire project works when it is compiled and programmed on the target, while it doesn't work when I start the simulator: gcc, during compilation, does not find the files I include.Can anyone help me resolve the problem? 

Using a custom board.Used CubeMX and CubeIDE to develop the code which is attached to this post.A read of WHO_AM_I_A results with the command in rxData[0] and nothing in rxData[1].Same thing happens when reading registers.

Hi,I got several FreeMarker template errors when I tried to compile the code to test out EVLSPIN32G0A1. It looks like all the files under MotorControl folder were affected by what I assume is the same error type (see attached picture).FreeMarker template error. The steps to reproduce this error are as shown below.Hardware Platform:Board: EVLSPIN32G0A1Motor: GBM2804H 100TSoftware:OS: Windows 11System Type: x64Motor Control Workbench v6.3.2STM32CubeMX v6.14.1STM32CubeIDE v1.18.1STM32Cube MCU Package v1.6.2Sequence of operation to reproduce error:I folowed the instructions in section 3.2 of UM3398 (User's manual: Getting started with EVLSPIN32G0A1)Launch the Motor Control Workbench tool.Select the target control algorithm from Field Oriented Control (FOC) or 6STEP.Select the target motor or create a new motor.Select the target evaluation board in the inverter section.Configure the solution according to application requirements.Generate the project and compile the codeI'm a newbie when it

Unable to generate motor control project using MCSDK 6.3.2The MCU is STM32G473CCU6"It is not possible to create a motor control project with the FOC algorithm using the selected hardware. No proper path for motor control signals was found for the following mandatory features: - Current SensingFor more details, please, look at the following log file in your home directory: .st_workbench/connectAlgo.log"I'm using three shunt resistors for current sensing, I have no idea where is wrong.

I'm using a Nucleo-F446RE board and have successfully flashed my application code to Sector 5 of the internal flash memory. The code runs correctly right after flashing, but it does not run after a reset or power cycle. It seems the MCU still boots from the default start address (Sector 0), and doesn't automatically jump to Sector 5. :question_mark:My main questions are: How can I make the STM32F446RE boot from Sector 5 after every reset? Is it necessary to place a custom bootloader at Sector 0 that manually jumps to the application code at Sector 5? Is there any other way? Any guidance would be very helpful. Thanks!

Hi everyone,I'm facing a frustrating issue and would really appreciate any help or insight you could provide.I’m trying to get the STM32WB55CGU6 into STOP2 mode, but I consistently see current consumption over 600 µA, both on my custom PCB and on the WeActStudio.STM32WB55CoreBoard. I’ve been stuck here for days and can’t make progress with my project because of this.Here’s what I’ve done so far:Thoroughly studied AN5071 and AN5289.Read several community posts and blogs from users with similar problems.Ported the official examples PWR_STOP2_RTC and PWR_EnterStopMode to my MCU.Verified that the project builds correctly and behaves as expected, except for the power consumption.Despite following all the steps I could find, the current remains way too high. I would expect it to be in the range of a few microamps.Here’s a screenshot from my PPK2 measurements: (I would expect that when LED is off, the STOP2 mode would be much more evident in terms of consumption)To be extra sure, I follo

Hello, I'm struggling with frequent overcurrent faults at the EVSPIN32G4 board.I found some mismatch of current sensing with 3-shunt and 2-OPAMP topology.Default current sensing for EVSPIN32G4 is described as following diagram at motor control workbench. But, the EVSPIN32G4 schematic drawing is as follows. It is a mismatch of the MC workbench and the schematic of EVSPIN32G4  [MC workbench : W Phase] OPAMP2 (+) : PB0, OPAMP2 (-) : PC5, OPAMP2 (out) : PA6[Schematic: V Phase]  OPAMP2 (+) : PA7, OPAMP2 (-) : PC5, OPAMP2 (out) : PA6  I'm wondering about this mismatch and it might be the cause of overcurrent fault.  Thanks for any advice in advance.      

I am working on FDCAN communication using an STM32G0B1CCT6 microcontroller. I am trying to perform a simple Tx/Rx loopback test (and later communication with external tools like Vehicle Spy), but I am facing the following problem: FDCAN is not transmitting or receiving any message. I have configured the peripheral in Normal mode with the following settings: Clock: 64 MHz Bitrate: 1 Mbps Prescaler: 16, TimeSeg1: 13, TimeSeg2: 2, SJW: 1 Frame Format: Classic CAN Auto-Retransmission: Enabled I also added a filter (Filter 0) to accept all standard IDs into RX FIFO 0, but still no data is received. FDCAN init and message send/receive functions return HAL_OK, but no actual communication happens on the bus. I’ve verified the transceiver wiring (ISO1044), and I'm testing using Vehicle Spy and ValueCAN4. I’ve also tried internal loopback, but still no response.

Hi there, I'm trying to program LSM6DSV80x to read sensor values in -500Hz for a certain period of time and send them for process (thus no realtime process, but need timestamps).  The sensor values include xl, hg_xl, gyro, and also Game rotation vector, gravity calculated by SFLP.  According to the use case, all values will be read through FIFO.  Mostly works well but I've come up with two questions.  - What timestamp means? Is it time of the latest FIFO entry,  or of the next FIFO entry, or irrelevant with other entries?- for game rotation vector, I got two consequtive entries having TAG=19 in FIFO everytime,  at the same timing.  Those two entries have completely different values. With the application note and the post in this forum, I understand the FIFO  entry for game rotation vector hold only x, y, z elements and w needs to be calculated at the host side.  For example (the order is, w - which I calculate, x, y, z):LSM6DSV80X_

I've been working on my own code for using USB DFU with our device and it is failing with the downloadFile call. I decided to test with the CLT (command line tools) and am seeing similar results. If I tell STM32_Programmer_CLI.exe to use the STLINK-V3SET with my hex file, it pushes the file without issue: However, if I put the device into USB DFU mode, it fails as such:  This failure output is the same failure output I get when running STM32CubePrgAPI - USB_Example, as well as when I run my own application.  The HEX file being used is the same in all instances. I've also tried using the corresponding ELF file. The device is an STM32H747XI and should load code at 0x08000000 as shown. I do however have a modified linker file that defines a NOINIT section at the top of the DTCM block, as well as some data that is shared between the CM4 and CM7 cores in the top of the RAM D3 block. Could these be the source of the errors when trying to use USB DFU? Thanks, C-C

Hello,I’ve been reviewing the current consumption section (Section 7.4) of the VL53L8CH datasheet.I’m currently using the Detection Thresholds plugin, and I would like to ask:Which power mode does this correspond to?Continuous mode (Table 15)?Autonomous mode (Table 16)?When Detection Thresholds are enabled, what are the assumed internal ranging settings (e.g., frame rate or integration time)?Additionally, if we reduce the integration time to 1 ms, could you clarify:How much power savings can we expect?Would this affect detection reliability or ranging stability?Thank you for your support.

I have purchased STM32F103c8t6 microcontrollers from three different vendors, but they are behaving differently.I am working on CAN, and on the microcontrollers from one vendor, it is working properly. But on the microcontrollers from other two vendors it is having issues with receiving CAN data. I am using same firmware on all microcontrollers and the CAN bus hardware is also same. by just replacing the microcontroller from different vendors I am having issues.So, what could be the issue which is causing the receiving issues with microcontroller. I tried lowering the baud rate from 500,000 to 40,000 as I thought that it is having issues with high frequency. but it still is not working. The problem is only for receiving, it is able to transmit properly. I also set a breakpoint inside the receive callback function, but the program is not even going there. The microcontroller which is working properly  The microcontrollers which have issues with receiving data.  

Hello,I am starting a project using this eval board.I need to route octo-spi flash and ram (like on the eval board).Do you have information about the stackup used ? Altium files give me a stackup but I find it a bit weird :Cu1 is 42µm / D1 is core 100µm Cu2 is 35µm / D2 is prepeg 100µmCu3 is 35µm / D3 946µm coreCu4 is 35µm / D4 is 100µm prepegCu6 42µmFlash and Ram tracks impedance are not 50ohms using those parameters. W (tracks width is 120µm).Regards,Dli 

Hi,I read (here) that it's possible to use a Nucelo board's in-built ST-Link Vn debugger to program/debug a custom STM32 board. However, I have a doubt about this.Please can anyone tell me whether such an approach is possible? I have available two Nucleo's: STM32F429 and STM32H755, and if either can be used to debug my custom H755 board that would be very good.Advice about how to connect boards would be much appreciated.Purchasing a debugger is obviously an option, but I don't like spending money.Thanks

  Moved from STM32H7B0 DFSDM Synchronization: Abnormal Clock Output During Register Configuration to a new thread in STM32CubeMX forum.   Thank you for your detailed instructions!I set a breakpoint as you suggested and found that the audio clock is indeed generated as you said, but its behavior is abnormal, and not modified by codes after.Unfortunately, I cannot measure the waveform of the audio clock (DFSDM1 ACLK) directly, as it is not mapped to any IO output by default.  To debug this, I re-mapped the DFSDM1 clock output (DFSDM1_CKOUT) from PC2_C to PB0. Surprisingly, the clock waveform on PB0 is now output correctly at the expected frequency (2.4MHz). This suggests a potential issue with the original GPIO pin PC2_C. Could this be due to accidental ESD damage to PC2_C? I would greatly appreciate your insights on whether this pin re-mapping approach is feasible for long-term use, or if there are better ways to diagnose/recover the original pin f

Hello,  I am currently in the midst of developing a super simple system to create a varying load. It's basically to resistors in series with a transistor in parallel of the second resistor. The transistor is driven by a PWM signal to bypass the second resistor and modify the load.I've been trying the circuit with a function generator and it's working perfectly.I now need to switch the PWM generation to a timer of a STM32. I have a nucleog474RE.I used one of the example code available via cubeIDE (TIM_PWMOutput) and changed the frequency to match what i need (3.2kHz) but whenever I try and use my circuit with it, the signal generated by the nucleo is nowhere near clean and smooth, there is a huge jitter that basically renders my circuit useless (I need very high precision and stability). Would any one have any idea why this is happening and what to do to correct it ? Thanks for the answers ! 

Hi I am currently trying to realise a motor control project for my custom designed circuit board using the STM32 G474 VE microcontroller. I found the motor control workbench by stm which allows me to relatively easy configure the control algorithm in a user interface which is beneficial as I am an electrical engineer and not a programmer. However the software only allows me to configure the system for STM boards and a range of specific motors. Is there any way to adopt the project for my system.  I would be really happy if someone could help me in this matter.

I have started looking at using the Azure RTOS package for my project but see it has since become Eclipse RTOS? Is STM supporting this RTOS anymore as I see the H7S3 Azure RTOS package was only updated seven months ago whereas the H7 branch as updated more recently? Is it still secure?