Solved

LSM6DSV16X QVAR

I'm setting up the ADC in "manual continuous" mode where hadc1.Init.ContinuousConvMode = DISABLE and then I call HAL_ADC_Start_IT() inside of HAL_ADC_ConvCpltCallback().  I get the first call to HAL_ADC_ConvCpltCallback and calling HAL_ADC_Start_IT() returns HAL_OK but the callback never gets called again.What am I missing?Thanks,Chris ADC_MultiModeTypeDef multimode = {0}; ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC1_Init 1 */ /* USER CODE END ADC1_Init 1 */ /** Common config */ hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.GainCompensation = 0; hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = DISABLE; hadc1.Init.ContinuousConvMode = DISABLE; hadc1.Init.NbrOfConversion = 1; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigC

Hello,I'm having an issue with the SPI clock on the NUCLEO MB2032 board. As you can see in the image, I only have the debugger connected, and the clock signal isn't completely square.In the code, the only thing I'm running is the following:const uint8_t EEPROM_RDSR = 0b00000101;while(1){      HAL_SPI_Transmit(&hspi3, (uint8_t *)&EEPROM_RDSR, 1, 100);}What I'm measuring with the oscilloscope is pin SB14, which, according to the PCB file provided by ST, is directly connected to the SPI clock.   

After a lot of searching i couldn't find this ST part number. Can anyone identify this part?  Is there a way to methodically find pert numbers from ST? Thanks in advace. 

Hello,I bought P-NUCLEO-LRWAN3 which is STM32 Nucleo pack LoRa™ LF band sensor and gateway. It has NUCLEO-F746ZG and NUCLEO-L073RZ boards and both boards have expansion boards for LoRa communication. NUCLEO-F746ZG has LRWAN_GS_LF1, NUCLEO-L073RZ has LRWAN_NS1 as expansion boards. LRWAN_GS_LF1 and LRWAN_NS1 are both from RisingHF.When you develop software for LRWAN_NS1, you don't directly communicate with Semtech SX1278, you send AT commands to LRWAN_NS1 via UART and RisingHF handles rest of the job. So I can have my own firmware on NUCLEO-L073RZ to do both my tasks and LoRa communication. (My point is document of LRWAN_NS1 tells you how to control LRWAN_NS1 independently)On the other hand, NUCLEO-F746ZG and LRWAN_GS_LF1 communicates via SPI. I found a document about LRWAN_GS_LF1, it shows how to use initial firmware (firmware which is on device when you first bought) of  NUCLEO-F746ZG. You are sending AT commands via com port to initial firmware, it translates your AT command and

I have tried to run the "UX Device HID Standalone" example under nucleo-wba65ri, and it doesn't seem to work.I connected the board's via the USB connector to my PC and while it is recognized, in function USBX_DEVICE_HID_MOUSE_Task on line 160 both:1. hid_mouse == UX_NULL2. device->ux_slave_device_state == UX_DEVICE_ATTACHED and not UX_DEVICE_CONFIGURED as needed would appreciate your support, might be imply a setup issue (I simply used a new nucleo boar and compiled and flashed the example)

Hi, everyone What does the letter MAR printed on the STmicroelectronics TDA7294 IC mean?See attached image fileThanksTDA7294CZ7S8428V6 CZ MAR

Hi there,I am using the full featured USART in LIN mode. The start of a LIN packet is signaled by a BREAK condition. The next byte is the SYNC (0x55). After the BREAK is detected, I enable the receiver timeout so that if the SYNC (0x55) is not received then the LIN reception must restart. This does not happen, i.e. after a BREAK with no other bytes, it does not generate a receive timeout.According to the RM, the receiver timeout starts after a valid STOP. So is the end of a BREAK not considered a valid STOP and therefore the receive timeout does not start?Thanks in advance,Pieterhttps://piconomix.com

Hello everyone,I’m working on a project where I am using STM32F407 and I’m trying to establish USB communication between my STM32F407 Discovery board and a PC. I have configured the board for USB_OTG_FS in STM32CubeMX, and I’m trying to use it as a Virtual COM Port (VCP). However, when I connect the board to the PC using the USB_FS port, it’s not being recognized as a COM port or any device at all in the Device Manager.I want to read the output of the ADC channels using the hercules software I would really appreciate any suggestions or guidance on:Getting the board to show up as a VCP in the Device Manager.Troubleshooting USB enumeration issues.

The Toolchain Manager takes 5–10 minutes to load the toolchain list, even with only a few installed.It happens every first time I open it after launching the IDE.If I close it and reopen it during the same session, it loads instantly.But if I restart the IDE, the delay returns.Is this normal behavior?If so, is there anything that can be done to speed it up?STM32CubeIDEVersion: 1.18.1Build: 24813_20250409_2138 (UTC)

Hi STM Community,I'm developing a custom LoRa-based board using the STM32WL55CC MCU, migrated from the STM32WL55JC, and referencing the MB138 STM32WL Nucleo-64 board as a design guide.I've attached a portion of my schematic (generated in KiCad), and I would appreciate if the community could help review the following:Schematic and power supply arrangementPin configuration and peripheral mappingRadio signal path integrityCompatibility or functional issues that may arise due to migrating from STM32WL55JC to STM32WL55CCGeneral layout or connection concerns for RF and MCU sectionsS

Hello STM32 Community,I'm working on a custom board based on the MB1389 (Nucleo-WL55JC) reference design, which uses the STM32WL55JC17 (UFBGA) package. Now, I am migrating to the STM32WL55CC in the UFQFPN package for cost and space reasons.While adapting the schematic, I noticed the following pins from the original design are not available in the UFQFPN package:PC3PC4PC5PB14PB1VSSRFVREF+I understand that the pin count is reduced in the UFQFPN package, but I need guidance on the following:Are there any internal remapping or alternative GPIOs for the above functions in the STM32WL55CC UFQFPN package?How should I handle VSSRF and VREF+, since they are critical for RF and analog operations? Can they be connected internally, or do they need external routing?Any advice or reference designs (for UFQFPN-based layouts) that clarify how to proceed with features that originally used those missing pins?For reference, I am attaching a snippet of my schematic based on MB1389, where these pins are cu

Hi, there's something confusing in the schematic for the H755 Nucleo's reference PCB schematic (MB1363).I don't mind adding that I'm getting a bit tired of confusing and contradictory documentation from ST Micro.The description of changes when configuring PSU config modes 2 and 3 are as below:In the highlighted note at lower left it says that to enable Config 3: "Connect VDD_SMPS_IND_OUT to VDD_LDO".However, looking just above at Config 2 it seems clear that VDD_SMPS_IND_OUT is already connected to VDD_LDO via the node 1V2_MCU which is always connected to both VDD_LDO and VDD_SMPS_IND_OUT.Can somebody from please confirm how this should work?My understanding is that the two modes can be summarised as follows (ignoring some capacitor changes):Mode 2VDD_LDO == VDD_SMPS_IND_OUTVDBSD == VCAPMode 3VDD_LDO == VDD_SMPS_IND_OUTVFBSD == VDD_LDOI need a quick answer please because I've a PCB layout needing to go to manufacture.Thanks

Hello,  I logged data using the STEVAL-STWINKT1 (flashed with DATALOG2_Release.bin) by connecting the sensor to the iOS app ST BLE Sensor. Then, I used the Python notebook "nb_stdatalog_converters.ipynb" to convert the .dat files to .csv. However, for some sensors, I can't retrieve the dataframe, and I get the following errors:   Error: No [iis3dwb_acc] sensor available in your selected acquisition folder. Please check the sensor name and try again. Error extracting data from C:\Users\...\iis3dwb_acc.dat file. Missing packets revealed, data corrupted.   Do you know why this problem occurs, or is the data actually corrupted? I've noticed that the error occurs when processing large files—specifically, data from sensors ism330dhcx_acc, imp23absu_mic, and imp34dt05_mic, which exceed 129,000 KB. This might be related to the issue. If you'd like to reproduce the problem, the code is provided below, and you can download my .dat files via this WeTransfer link : https://we.

Hi,We are currently implementing ADC on the STM32G491 MCU using ADC2, Channel 15, with Vref set to 3.3V.The ADC configuration is as shown below: hadc2.Instance = ADC2; hadc2.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2; hadc2.Init.Resolution = ADC_RESOLUTION_12B; hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc2.Init.GainCompensation = 0; hadc2.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc2.Init.LowPowerAutoWait = DISABLE; hadc2.Init.ContinuousConvMode = DISABLE; hadc2.Init.NbrOfConversion = 1; hadc2.Init.DiscontinuousConvMode = DISABLE; hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc2.Init.DMAContinuousRequests = DISABLE; hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED; hadc2.Init.OversamplingMode = DISABLE; if (HAL_ADC_Init(&hadc2) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_15; sConfig.Rank =

Hello,I noticed in the document RM0368 (Rev 6) for F401RE the SPI Register map (Table 93 page 611) is missing the SPI_CR2 register.I came across this topic, created in 2021 and now closed :https://community.st.com/t5/stm32-mcus-products/error-in-rm0368-reference-manual-spi-register-map-or-i-miss/m-p/225332This topic was about Rev 5, and the problem should have been fixed in Rev 6. Is my Rev 6 a too old document and it was patched in later revisions or is it still in the latest revisions as it appears that REV 6 is the latest version of RM0368 according to the F401RE product page :https://www.st.com/en/microcontrollers-microprocessors/stm32f401re.html#documentationMatt

Hello,I have purchased the "STEVAL-25R200SA – Discovery Kit for the ST25R200 high-performance NFC device" and attempted to run the sample application STSW-ST25R020 (Firmware for STEVAL-25R200 kit) available on the portal.I was able to build and flash the code successfully; however, the reader is unable to detect the tag when it is presented. Additionally, I do not see any output (Even with USE_LOGGER=LOGGER_ON) on the Tera Term terminal.Interestingly, when I use the same firmware along with the ST25R200 Eval GUI PC application, the reader appears to wake up, detect tags, and return to sleep mode as expected but no output on the Tera Term terminal.Could anyone assist me in identifying the issue and provide guidance on how to resolve it? Thanks & Regards,Tanuj

Dear Support,Good day.What is the meaning of the suffix that indicated on the label itself for the second line part no.?Is it because of the COO that makes the suffix different? Or it’s just the internal code for STMIC?  

Hi,I have to use the transceiver for pure RF communications and implement my own protocole.After checking several boards, I've be recommended the P-NUCLEO-WB55 but from all the doc and example I find, the transceiver is used for BlueTooth communications, which I don't need at all.Is it possible to use its transceiver RF without BLE, Zigbee, etc... as a simple 2.4Ghz range transmitter and receiver?If not, which MCU should I get, that includes a dev board offering AD, DA and pure RF ?Thanks for any light. Steve

Hello STM32 Community,I'm trying to implement CAN communication on my Nucleo F446RE board and I'm facing some challenges getting it to work properly. I've attached screenshots of my .ioc configuration and the auto-generated code from STM32CubeIDE for reference.Current SetupHardware: STM32 Nucleo F446RETransceiver: SN65HVD230Baudrate: 500kbps (Prescaler=5, BS1=6TQ, BS2=3TQ)IDE: STM32CubeIDEIssues I'm ExperiencingWhen trying to transmit CAN messages, I'm getting "TX Error" and "CAN State: RESET" messages through UART. The free TX mailboxes show as 0, which seems unusual for initialisation.What I've TriedConfigured CAN1 in normal modeSet up the pins PA11 (RX) and PA12 (TX) for CANImplemented basic transmission code using HAL_CAN_AddTxMessage()Added proper termination resistors (120Ω)QuestionsIs my CAN configuration correct in the .ioc file?What could be causing the CAN peripheral to remain in RESET state?Are there any specific initialization steps I'm missing for the SN65HVD230 transceive

Hi everyone, I'm trying to generate a sine wave using PWM output updated by GPDMA transfer on an STM32H5 device. I'm following this tutorial:STM32 Change PWM Duty Cycle With DMA For Sine Wave Generation However, when I try to implement it with STM32H5 (which uses GPDMA instead of classical DMA), I can't get any output at all or get the PWM to update properly. My Goal: Generate a continuous PWM output.Update the duty cycle from a sine wave lookup table stored in memory.Use GPDMA Standard Request Mode to update the TIM2 compare register (TIM2->CCR1). My Setup:MCU: STM32H563ZI (Nucleo-H563ZI board) PWM Output: TIM2_CH1 on pin PE0 Timer for DMA triggering: TIM4_CH1 DMA Mode: GPDMA Standard Request Mode (not Linked List) Circular Mode: Enabled Data Size: Word (32 bits) Transfer: Memory to Peripheral (M2P)   PWM Output (TIM2_CH1):The PWM output is generated on PE0: Notes: TIM2 configured for PWM mode 1 Channel 1 is used Output routed to PE0 (verified)   TIM4 Configuration(To O

The AN5322 specifies the Murata LXRW series as the voltage-controlled capacitor. Murata's capacitor is EOL. What alternatives are there?

Hello, I'm trying to use this nucleo board with the camera DCMI interface. This camera has operation condition between 2V8 and 3V1.Currently, I power the camera with a external source of 2.9V but the nucleo board is in 3V3.Is there a solution to power the MCU (but still have the st-link working) to 3V or 2V8? Thank you, Simon

the integrated circuit is mounted on an electronic board.I can't find any reference.Can you tell me what it does.Is there an equivalent? thanks.  

Hello Experts,i am facing a similar issue on the STM32F407G discovery board. Is there any solution or a temporary fix for this iisue?https://community.st.com/t5/stm32cubemx-mcus/re-freertos-semaphore-not-initialised-correctly-by-cubemx/td-p/780252 Changing the initial state of the semaphore to Depleted does nothing in the semaphore definition and creation:In freertos.c, inside the function MX_FREERTOS_Init(). i  think the second function parameter should be zero I am trying a simple GPIO interrupt to task signaling, but the task always takes a semaphore without the GPIO interrupt the first time. I have attached the complete freertos.c file for context. This is the console screenshot to highlight the bug:  I tried to manually change:myBinarySem01Handle = osSemaphoreCreate(osSemaphore(myBinarySem01), 1);tomyBinarySem01Handle = osSemaphoreCreate(osSemaphore(myBinarySem01), 0);Now the task does not take the semaphore during start up, but the moment the GPIO in