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In the STM32F469, can the bus arbitration priority (amongst the different bus masters) be changed? From my reading of the Application Notes and the Reference Manuals this doesn't seem to be the case. But I'd like to get a confirmation just the same.  I wanted to give DMA2 a higher priority over the core, but I suppose that's not how it works by default (or at any point, if the arbitration prioriy assignments are fixed)

Hi everybody, how can the CPU1 of module STM32WB5MMG be waken up by the RF subsystem?The idea in mind is to use the module as a BLE Server, have the CPU2 perform advertising while the CPU1 is in STOP2 mode. According to the reference manual RM0434, this could be done?  And in the Datasheet of STM32WB55xx, the RF is listed as a possible wake up source as well.Waking up with the the RTC, an EXTI event and EXTI interrupt worked, but the CPU2 stops its advertising shortly after the CPU1 goes to STOP2 mode, even though the low power mode for the CPU2 is disabled. I thought that the CPU2 would continue the adversiting and either the EXTI listed as "CPU2 SEV interrupt..." or "PWR switching on the fly, ..." could wake up the CPU1 if a connection is requested from the client. Obviosly I am missing somehting, does anybody has an idea of what am I getting wrong?Thanks in advance!  

Hi all, I think this is a bug of CubeMX. Everytime the .ioc gets updated for the project, the code written for the descriptor characteristics get deleted in the SVCCTL_InitCustomSvc() of the autogenerated custom_stm.c file.I don't know if this issue is konwn or I am missing something while updating the .ioc file. Best Regards. 

I found something interresting.If we look at the STM32MP15XXAC (package TFBGA361) we can see that:DLCD_B1 is connected to K4 and Y17OTG_HS_ID is connected to Y17ETH_PHY_INTN is connectes to K4In this case, I need DLCD_B1 and OTG_HS_ID for flashing the eMMC with Linux. What I found is that ETH_PHY_INTN is actually connected to AC8 for the STM32MP157 dev-kit, and that leads me to the question:Is AC8 an interrupt or a wakeup pin for the Ethernet PHY? Why is AC8 selected? Should I declare it as an External Interrupt in CubeMX?If I look at CubeMX, there is an option for Ethernet Interrupt.   

Implement CAN Communication on STM32F407 discovery board using register level programming.In which we transmit some messages and receive same messages in loopback mode. Can you please write the code for this.

Hi, I've created a project in STM32CubeIDE 1.14.1 for the Discovery board B-U585I-IOT02A with TrustZone enabled. Unfortunately, I'm unable to select any of the TIM timers as the SYS_NS and SYS time source. They are disabled with the following message: "TIM6 disabled: This IP instance is already used or no context is selected."However, I activated the TIM6 timer with a Non-secure context enabled.Thanks in advance for your help!@STea 

Can somebody explain what is the hardware and software breakpoint ?When I add a breakpoint in STM32CubeIDE, what is the type of this breakpoint ?What is the difference between these two? 

For best EMC immunity and minimum cell current (need months of cell life), how to setup un-used pins of STM32WLE5JCI6?  The chip in a module with metal screen box.  Pins are 'broken out' to edge of module with pcb trace of a few mm.a. Should we program un-used pins as digital input (internal pull up, pull down or none), digital output (set to zero or one) or analogue input (seem minimum cell current drain as application note)?b. Should un-used pin connect to Vdd, Ground or left open (if it is digital output)?For EMC, the device should function properly near a cellular phone transmitting at maximum power (assume phone is far away from base station).  Phone is likely 4G or 5G (and 3G rarely).  Not sure if maximum transmit power differ?Many thanks

COMP2 is not listed on the configuration tool... eventhough it is well documented on the RM0455. Please provide directions to activate and use properly COMP2 on the H7A3

Hello,I am trying to evaluate the use of MCSDK in a dual-motor application.  Motor 1 works, but motor 2 does not.I have a fresh Workbench project, with both motors configured identically, with the exception of Over-Current Protection.  When I generate, I get a "NOTICE: Please disable the overcurrent protection of Stage 2 to avoid resource assignment conflict on COMP2.  The power state is already protected by STDRIVE101."  Under Current Sensing of Stage 2, I disabled Over-Current Protection, but still get the notice.The generated CubeIDE project compiles and uploads without issue.I use MC_FOC_SDK_2_Motors to try to start/stop the motors.  After connecting, I hit press Start on Motor 1.  I hear the PWM, and after a second (as expected), the motor starts ramping according to my startup sequence.  When I press Start on Motor2, I get no sound, and no motion.I analyze the outputs to the motor with a dual channel oscilloscope.  On Motor 1, U, V, W signa

We have been told Asymmetric Serial Packet Exchange Protocol documentation would be available with the release of MC Workbench V6. We're at V6.3 now. Can you direct me to where I might find said documentation?The old serial communication class available in MC Workbench 5.4.8 doesn't seem to work with the new Workbench versions.Here I sit at 5.4.8 wondering, where is the flying car I was promised?Thank you in advance.

I'm trying to get my STM8AF5288 to read CAN from a TJA1050.I had it reading perfectly.  1Mbps @ 16Mhz.  Using time_seg1 of 8, tim_seg2 of 7, prescale of 1.  SJW1.The sending unit is an Arduino attached to an MCP2515 and TJA1050.  Verified with another arduino unit that it can read the sending on the CAN bus.Now, I decided that after utilizing the internal clock and being able to read CAN, I would switch to an external resonator.  Threw that on, and suddenly couldn't get CAN to work anymore.  I hadn't even selected the external clock to be used.  Still had internal setup in the code.So, I removed the resonator I installed.  Still can't get CAN.I have 7x of these PCB, so I thought maybe I messed something up.  Rebuilt another w/ all new components.  Still not seeing CAN.I am getting stuff populated in the CAN FIFO data.  But, it's always the same thing and appears to be 'junk'.  Where, previously I was seeing the correct st

Hi everyone, I am kinda new at Embedded programming and I wanna ask a question.I am working on a library development of ADXL345 sensor and when I read the datasheet of this sensor here is the information that I got:"An alternate I2C address of 0x53 (followed by the R/W bit) can be chosen by grounding the SDO/ALT ADDRESS pin (Pin 12). This translates to 0xA6 for a write and 0xA7 for a read." This means I2C address of ADXL345 is = 0x53 HEX and "0101 0011" Binary.after 1 bit left shift and write address is = 0xA6 HEX and "1010 0110" Binary.after add 1 bit to the shift address is = 0xA7 HEX and "010 0110" Binary. When I run this code block in STM32 : I got the A6 write address instead of 0x53 I2C address. Do you know why ? I got an opinion but I am not sure. When I read the brief of HAL_I2C_IsDeviceReady() function it says:"@brief Checks if target device is ready for communication."so its mean " I am trying to write something and checking for knowing can I write or

I've complained about this before, and got nowhere. It's still completely unworkable. When can we light a fire under the developers to get this addressed? Showing FIVE potential matches might work in a system with SIX users, it is not viable in one with over SIXTY THOUSAND.https://community.st.com/t5/feedback-forum/having-quot-fun-quot-with-khoros-editor-failures/m-p/594201/highlight/true#M518 

Hii ,Does VL53L8 tof sensor support ROI selection or Reduced FoV as VL53L1 , if yes how do i do it ?Thanks,Poornima B

HI: I want to write the board SN, REV, TIME to STM32C031F6 OTP area 0x1FFF7000~0x1FFF705F, which is almost 96bytes to write, from the stm32cubeprogrammer manual -W64 command can to write, but is needs to be repeated 6 times, right?Also from the manual there have write file for the OTP command "fwrite", how do i understand parameter "word"  , can you tell me what command to use?"STM32_Programmer_CLI.exe --connect port=usb1 -otp fwrite example.bin word=??" example data:47333934302D36313833304130314653323331353030303100FF71D2FFFFFFFF66138B6F00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3106FFFFFFFF41303100FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD115FFFFFFFF Can you tell me how it would be easier to write these data? thanks! 

Hello,I am using the STM32U575ZIT6 microcontroller and enabling the TrustZone option. When executing projects, the HardFault handler triggers when switching to the non-secure zone, displaying the message "No source available for <signal handler called>() at 0xffffffa9". This also happens when running a blank project. Do you have any solutions?

Hello everyone! I would like to ask about the DSPI baud rate setting for the SPC582BE1 microcontroller. As shown in the following figure, when using the SPC5828XX-RLA DSPI Test Application for Discovery routine, I found that the default setting for Baud Rate Prescaler is PRE5 and Baud Rate Divider is DIV2 The Baud Rate (Bit/s) is 8000000, and I used a logic analyzer to collect the SCK signal line of DSPI and found it to be 1.25MHz! I would like to ask how did this 1.25MHz come about? Can you tell me?

I have a self-powered device.  It appears as a USB CDC device /dev/ttyACM0, when plugged into a Linux host.  The device port is wired to USB_VBUS, so that pin will only be high when connected to a USB host.I would like to detect the presence of the USB cable, so that the device can sleep if there is no cable and other conditions are met.- How can I detect the presence of the USB cable?  I'm using CubeIDE and the HAL.- How can I put the STM32 to sleep in such a way that it will wake up when the USB cable is plugged back in? 

I am attempting to set up an encoder on STM32G431RB using Tim 2 which is 32bit but it is only counting up to a 16bit value and going negative. I looked at the register through SFR and only the first 16 bits are active, is there another setting I need to change to use the full 32 bits? SFRConfig

Here is what I observe:I have an application running that communicates via the CAN bus. With a certain command via CAN the STM32 (STM32F2xx) is put into sleep mode. Thereby I configure the microcontroller to wake up and get an interrupt when activity is detected on the CAN bus. I wait until the configuration is done successfully by the hardware and then call __WFI(). As soon as a message comes in on the CAN bus the microcontroller also wakes up without problems and does its job perfectly BUT here one thing happens:Should it be alone on the bus (apart from the sender of course), then the first message that wakes up the MC is answered with a NAK; only on the second repetition (ARQ) the message is answered with an ACK. Almost as if the controller takes too long to wake up.In the Reference Manual I read that the bxCAN module needs 11 consecutive recessivebits to synchronize with the CAN after a sleep. Does this mean that this behavior can be considered normal?Thanks for your help

Problem:The USB communication between STM32F401RC and MacOS v14.3.1 (Sonoma) doesn't work when the MCU is running on a bare metal, but it works when the MCU runs on FreeRTOS. It does "connect" on bare metal, but sending any USB MIDI messages from the app on MacOS to MCU doesn't have any expected effect on the MCU. We are using:- STM32F4xx HAL Driver v1.8.0- usb_device, usb_desc v1.0_Cube What have we tried:1. The same problem occurs with STM32F401RB.2. The USB communication works fine between STM32F103 (bare metal) and MacOS v14.3.13. The USB communication works fine between STM32F401 (bare metal) and MacOS v12.7 (Monterey).4. The USB communication works fine between STM32F401 running on Free RTOS (doesn't work when on bare metal) and MacOS v14.3.1.5. We are aware that from MacOS Ventura a permission has to be given for USB accessory connection, but this is not applicable to Mac Studio that we are using.6. We use "Pocket MIDI" app on MacOS and we can see that the input p

Hi,I am looking for the drivers that support multiple USB Printer Vendors. Can anyone has configure the STM32MP135  with multiple USB Printers support.Warm regardsMohammad Faizan

To STM,Subject: NanoEdge AI package not compile with B-L4S5I-IOT01A Board.Board - B-L4S5I-IOT01A BoardAI application tool - NanoEdge AI StudioCUBEMXIDE -  STM32CubeIDE 1.15.11. AI model generate from NanoEdge AI Studio for B-L4S5I-IOT01A Board. Package download for deployment.2. CUBE mx generate code for B-L4S5I-IOT01A Board.3. NanoEdge AI Studio package include in code.4. Code compile for variable from header file of NanoEdge AI.Please see image file - ModelPackInclude2Code5. Compilation fail on function call of NanoEdge AI.Please see image file - Cmplitn fail on edge ai fun cal Please help to include deployment package to B-L4S5I-IOT01A Board code. Reference :[1] https://www.youtube.com/watch?v=yXMUv_C5FGk&t=101s[2] https://stm32ai.st.com/nanoedge-ai/[3] https://wiki.stmicroelectronics.cn/stm32mcu/wiki/STM32StepByStep:Step4_Sensors_usage#Using_sensors_with_B-L475E-IOT0-

Board: STM32F411REGreetings,I am trying to make a program where the mcu read an audio file on the SD card, apply a sound filter on it, and write the output to a different file. The program will split the audio file into small chunks and compute them one by one:Open the source file to readOpen a new file to write the resultRead a chunk of the source fileApply filter onto the chunk, the output is written into a distinct buffer (array)Write the buffer into the opened fileRepeat 3-5 until the whole file is done (total chunk size = source file size)Close source fileClose new fileI am facing a problem where f_write will trigger a HardFault interrupt handler when it is called a 2nd time. (Code is attached below.The audio is in the format .wav, so I have adapted tinywav library by mhroth to work over SPI for fatfs:For reading, I'm using: f_open(..., ..., FA_READ)For writing, I'm using: f_open(..., ..., FA_WRITE | FA_CREATE_ALWAYS), I tried to add FA_OPEN_APPEND as well but result is the same.&