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The output status of A7987 chips varies from batch to batch. We purchased materials from different suppliers, and one batch will have a high pulse of about 7V after recovering from a 5V short circuit, while the other batch will have a high pulse of about 13V after recovering from a 5V short circuit. The maximum withstand voltage of the rear chip is 7V, and this 13V pulse can cause damage to the rear chip.Analysis of Failure Causes of CAN Transceiver Chip on HJ81 Circuit BoardA7987 abnormal chip, the voltage surged to around 13V when powered on after a 5V short circuit, causing the backend chip to burn out。   After replacing the chip with A7987 that tested normally, the voltage fluctuated to around 7V when powered on after a 5V short circuit, within the range that the CAN transceiver chip can withstand。    

The register map of L9961 BMS IC is missing from the datasheet, where can i find it?

Hello,I have generated a makefile project on CubeIDE for STM32WB55RG and I'm trying to debugging it on CubeIDE . After a research on the forum I got to know that this is achievable and set up build settings accordingly.  When I try to debug I get the error: ../Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal.c:35:10: fatal error: stm32wbxx_hal.h: No such file or directory    35 | #include "stm32wbxx_hal.h"       | ^~~~~~~~~~~~~~~~~ compilation terminated. I've checked my file system and the file does exist and on my Makefile file I have it included (4th code line) # C includes C_INCLUDES = \ -ICore/Inc \ -IDrivers/STM32WBxx_HAL_Driver/Inc \ -IDrivers/STM32WBxx_HAL_Driver/Inc/Legacy \ -IDrivers/CMSIS/Device/ST/STM32WBxx/Include \ -IDrivers/CMSIS/Include  Still don't understand why the file can't be found. Any clue? 

Hello,I'm beginner in STM32 and would need help with HAL callback function usage.When I've started to use STM32s after PICs, one of the reasons why I was happy that the timer module encoder receiver function works really well, robust. I did used other interrupts, but somehow I have not used other timer interrupts ... until now. And now I'm stuck.I try to use an STM32G474 with an I2C oled on, encoder on timer 4, some spi peripherials and want to measure frequency on timer 5. My problem is, with HAL, how can I separate the two actions? Both encoder and time measurement calls the HAL_TIM_IC_CaptureCallback. Both works fine ... as long as there is no interrupt coming in from the other. At the moment the function looks like what I copy below. Can you please help how to separate the 2 actions, how to refer in in(**) to one or the other or any other, but with using HAL.Thanks!!JG  void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim){// If the Interrupt is triggered by 1st Channe

I have created my first PCB with a STM32C011F6P6 on it, but I am not able to measure a GPIO I set high from my testpoint.I am setting PB6 high the following way:I flashed the code to the MCU via the cube ide and it told me that everything went fine.This is what cubemx generated for the gpio init:static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* USER CODE BEGIN MX_GPIO_Init_1 */ /* USER CODE END MX_GPIO_Init_1 */ /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); /*Configure GPIO pin : PB6 */ GPIO_InitStruct.Pin = GPIO_PIN_6; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* USER CODE BEGIN MX_GPIO_Init_2 */ /* USER CODE END MX_GPIO_Init_2 */ }I have it wired the foll

The link on the bottom of page 158 is bad.There is no SBF flag in PWR_CR3, actually it is in PWR_SR1.     

Is STDES-BCBIDIR source code available?Only hex can be found in web site belowhttps://www.st.com/en/embedded-software/stsw-bcbidir.html 

I have made a PCB with the STM32C011F6P6 on it and am trying to program it via an ST-LinkV2. While trying it out yesterday, it connected just fine with the cube programmer. Now I am trying to do the same thing again, but both the cube programmer and the cube ide tell me that they can't connect.I have already upgraded the firmware via "stsw-link004".Does someone have an idea what might be causing this?Schematic of my MCU wiring: 

The Reference Manual for STM32U0 series MCUs, RM0503 Rev2, specifies, in table 2 on page 57, that SRAM starts at 0x2000 0000 and ends at 0x2002 9FFF.  This is a contiguous region with a size of 168KB.  However, the Size column shows 40KB.  This document is confusing.  What is the correct size of SRAM?Furthermore, in section 2.3 on page 60,  table 5 lists 2  SRAM segments, SRAM1 (32KB) and SRAM2 (8KB).  These add up to 40KB, which is the size listed in table 2.  However, the locations of these segments within the SRAM region are not documented.  The table does not specify where the start addresses are, nor does it specify whether or not the two segments are contiguous or separated.What are the start addresses of SRAM1 and SRAM2?Why are they separated?What are the differences between these two segments?Is  there a different document that explains these in better detail?

Hi all,My colleague's Windows IDE version is 1.7.0, while I installed the latest version 1.17.0. However, I found that the MCU can work normally after the sfb file compiled in his IDE and loaded into the MCU. But when the sfb file compiled in my IDE and loaded into the MCU, the MCU cannot operate normally. Is it possible that the IDE version is too different to cause this? If I want to install an old version of IDE for testing, how can I get the old version of Windows IDE version 1.7.0?Thanks a lot.

Hi, I'm trying to compile NFC Tap for iOS but no luck so far.  I've resolved the following issues, by following the advice of other posts on this forum:Add st25sdk header search pathRemove ST25NFCAppClip from buildFix signing and j2objc pathAdd st25sdk framework from en.stsw-st25ios005.zipChange bundle identifierAfter these fixes, the project still fails to compile due to the errors shown below.  I'm suspecting  an issue with the j2objc version.  I'm using the latest from their repo.  Is there any recommended version that I should use?Xcode Version: 16.1STSW-ST25IOS002 version: 7.6.0STSW-ST25IOS005 version: 1.0.0Thanks! 

I want to initialize the STM32H573 ETH module using the STM32CubeMX code generator (see ioc file attached). It should run in MII mode using an external transceiver.I kept the configuration unchanged, however it always jumps to ErrorHandler, because HAL_ETH_Init returns HAL_ERROR on timeout of ETH_DMAMR_SWR at the following routine: SET_BIT(heth->Instance->DMAMR, ETH_DMAMR_SWR); /* Get tick */ tickstart = HAL_GetTick(); /* Wait for software reset */ while (READ_BIT(heth->Instance->DMAMR, ETH_DMAMR_SWR) > 0U) { if (((HAL_GetTick() - tickstart) > ETH_SWRESET_TIMEOUT)) { /* Set Error Code */ heth->ErrorCode = HAL_ETH_ERROR_TIMEOUT; /* Set State as Error */ heth->gState = HAL_ETH_STATE_ERROR; /* Return Error */ return HAL_ERROR; } }From what I've read on this forum, the ETH somehow needs an external clock input from the transceiver. However, ETH_REF_CLK is only defined in RMII mode, but I want MII mode with RX and TX clocks. Does it st

I downloaded the STM32H753 SVD file from https://www.st.com/resource/en/svd/stm32h7-svd.zipI have found a number of discrepancies between this file and RM0433  (reference manual)That leaves me wondering if this file is outdated and a more recent, corrected version exists somewhere?Examples:FDCAN_DBTP is read-only access in SVD but read-write in RM0433FDCAN_RXF1C is missing F1OM (Bit 31) in SVD, exists in RM0433FDCAN_TEST is read-only access in SVD but read-write in RM0433

Hi,I am using VL53L8CX sensor from Pololu and connected it with Nucleo-F411RE board. I am using Arduino IDE 2.3 where I have downloaded STM32duino VL53L8CX library. When I run HelloWorld_I2C example with the wire  connections as mentioned with (SPI/I2c-->GND, Lpn-->A3), I am getting the distance result. But when I do the same with the HelloWorld_SPI example with mentioned connection (SPI/I2c-->3v3, Lpn-->3v3), I am getting nothing. When I put the breaker in between, the initialization itself fails saying sensor initialization status 1. I would be a great relief if you could help me with this.Thank you

Hi, CARHER  I just want to know what is the software you show in the picture? Where to download it? thank you. post created based on a command posted on an old thread. here is the picture mentioned by the customer:     

Hi, I use STM32CubeMX 6.10.0 and I have a STM32H7 CPU.The LPTIM is a frequency counter that can give an ISR when thecounter reached a specified value; after reaching this value it startsagain from zero (ARR mode), or it continues towards the max valueon 16 bits and then starts again from zero (CMP mode)My question is: can I configure from CubeMX this LPTIM in CMP mode?To me it seems there is no settings for this, whatever I do it's still in ARR mode ..the solution would be to make manual code changes ? 

HelloA few days ago, I went through the SDMMC registers using stm32l4r9-discovery.I am using the "June 2021 RM0432 Rev 9" and haven't found a more recent datasheet for it.Using stm32cubeide (1.17.0) (window->show view->)SFRs panel, the bits shown in SDMMC1 STA don't match with the datasheet ones in 54.10.11 SDMMC_STAR section as follow. The IDMA labels are missing too in SFRs.In 54.10.17 (p. 2030/3000), the IDMABNDT attribute is defined for the [12:5] bits (8-bit long value).On the bit table, the 16th bit is shown as "rw" which is false as the [31:13] are specified as "reserved, must be kept at reset value". (In some stm32 boards, the sdmmc IDMABNDT is defined on [5:16] bits so it just might be a copy-paste error).My main concerns about this register are the differences between the datasheet and HAL function.The datasheet specifies a constant bit offset 5 for IDMABNDT, but in the HAL function, the IDMABSIZE is set depending on the BLOCKSIZE (constant 512 bytes) which is unclear/c

Hello everyone,I'm working on a project for which I designed a custom board. It consists of the following components.STM32H7R3L8H6H MCUArm® Cortex®-M7 32-bit 600 MHz MCU, 64 KB flash, 620 KB RAM, Ethernet, 2x USB, 2x FD-CAN, advanced graphics, 2x12-bit ADCsMX25UW25645GXDI00-T1.8V 256M-BIT [x 1/x 8] Read-While-Write Octal SPI MemoryAPS256XXN-OBR-BG1.8V 256M-BIT Double-Data-Rate Octal SPI PSRAM with x8/x16 interfaceEMMC08G-MV28-01J108G-BYTE eMMC chipLAN8742A-CZ-TRMII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® TechnologyL6364Qdual channel transceiver IC for SIO and IO-Link sensor applicationsRC-SPIRIT2-xxxRC-SPIRIT2-915 module based on STMicroelectronics S2-LP transceiver Here are some pictures of the board: I chose this MBU because it's a potent and flexible device with many possibilities. The downside is that it is relatively new and not commonly used. During my work on this project, I encountered many challenges and obstacles. The investment of count

Hi,I'm trying to learn programming STM32MP157 with qt library using boot2qt module.I flashed microSD card using boot2qt module, prepared and employed samlpe project from qt Creator to STM32MP157. - this works fine.Now I would like to control interfaces (ec. GPIO, SPI, CAN) in STM using qt.  - there is where my knowledge ends.I think so that I should connect libraries delivered by STM  to my qt project?, So what libraries I should including to control DIDO? 

Hi thereStarting pointI am currently working on porting our NFC implementation from the ST25R3916 to the ST25R100.We will also replace our current library (Lib-NFC & ST_25r & RFAL) and use the current libraries (RFAL and NDEF) from ST.For the migration I currently use a NUCLEO-U575ZI-Q board and two NFC shields (X-NUCLEO-NFC06A1 with the current ST25R3916 and X-NUCLEO-NFC09A1 with the new ST25R100).I already successfully migrated our implementation to the new library. I'm able to poll for NFCA and NFCV tags using the X-NUCLEO-NFC06A1 shield.Issue DescriptionWith the X-NUCLEO-NFC09A1 shield connected, I'm not able to discover any NFCA or NFCV tags. Communication with the ST25R100 seems to work just fine (no errors).gNfcDev.state enters states: RFAL_NFC_STATE_START_DISCOVERY, RFAL_NFC_STATE_POLL_TECHDETECT and RFAL_NFC_STATE_LISTEN_TECHDETECT (which indicates that no tag has been detected) May you have a clue why ST25R100 sees nothing?Any support is highly appreciated.Best,S

Hello,I am using the internal pull up for the input pins, but when read the port status using the program, it always reads 0 instead of 1. I expected it to read 1 and if make that pin grounded it shall read 0.   

I'm trying to add an LIS2MDL (STEVAL-MKI181V1) magnetometer to my LSM6DSV32X's (STEVAL-MKI240KA) sensor hub. I can't get the LSM6DSV32X to properly identify the LIS2MDL, and I'm not sure if it's a hardware- or firmware-related problem. My current hardware configuration is:SCx on MKI240KA tied to SCL on MKI181V1SDx on MKI240KA tied to SDA on MKI181V1INT2 on MKI240KA tied to DRDY on MKI181V1Jumpers on MKI240KA shifted to SCx/SDx positionsCS on MKI181V1 tied to VddFor context I'm using Zephyr RTOS, but the initialization sequence for the LSM6DSV32X should be the same, especially since it fails right at the beginning when attempting to identify slaves. From the LA output, it looks like the LSM6DSV32X is trying to communicate with the external sensor but it can't sufficiently drive its SCx/SDx pins?

Hello all,   I made my first "from scratch" STM32 board (in the past I always used demo boards).  I cabled JTAG connector  : I was able to flash and debug from CubeIDE in SWD mode with a Stlinkv2, but did not succeed in JTAG mode, don't know why but it is not my today's topic. Works ok for what I did at the time.  I used the internal clock (HSI RC) and my application worked well.   Then I wanted to add USB, so I had to use an HSE clock (it seems the HSI RC is not stable enougth). i added external quartz (ABLS 8 MHz with two 33pf capacitors), changed the clocking configuration from the Cube assistant, regenerated the code, then flashed. Now the chip is nor more accessible, it does not boot, and I can't flash it, even if I change the clocking setup to HSI RC again.   I have two questions :    - is there a way to get my board STM32F303 flashed again or is it dead ?    - Is there a way to make some electrical diagno

Using MC Workbench to generate an ST Motor Control application and selecting the EVSPIN32G4 as the inverter, it includes the STM32G431VBTx LQFP100 (100 pin edition). This can be seen when opening CubeMX (screenshot included).The EVSPIN32G4 comes with the STSPIN32G4 in the package type "VFQFPN 9X9X1.0 64" using STM32G431VBx3 as according to its datasheet. Hence it is the wrong package type (64 pins vs 100 pins) and more pins are exposed for use than actually available on the inverter board.If I try to create a project directly in CubeMX using STM32G431VBx3, only STM32G431VBT3 shows up (LQFP 100 package), which is indeed what the MC Workbench is selected with EVSPIN32G4. So it is not possible to create a project using STM32G431VBx3 with 64 pin package at all. [VERSION]: 6.3.2 (latest version for all tools)[TOOL]: MC WB[DETAILS]: See above.[EXPECTED BEHAVIOR]: Correct package type used for EVSPIN32G4 (VFQFPN 9X9X1.0 64)[HOW TO REPRODUCE]: See above.

I have designed a STM32F429 Custom TFT Board With 4.3" TFT it is based on 32F429IDISCOVERY MCU + RAM + 4.3" TFT in 16 bit mode and I'm using TouchGFX. I have few questions.1) It is possible to remove External RAM from the System.2) How to limit RAM Usage so as to use the internal MCU RAM only