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Do you know the specified values for tr, tf and THSE?

Hello, I am developing a custom made PCB, for a pico balloon, mounting a STM32F103C8T6. For this project I will need to use low power techniques but before going deep into the Sleep/Standby/Stop mode I was working on understanding and reducing the power consumption of the STM32 during RUN mode. For these tests, the STM32 has only the decoupling caps in the VDD, VBAT and VDDA pins, and the rest of the PCB are left unpopulated to ensure the current consumption comes only from the STM32.I reduced the code to the minimum by just setting the Clock configuration for 8 MHz (directly from HSI, PLL and LSI off) , setting all the GPIO to INPUT + PULLDOWN + Set to RESET, configure 1 GPIO as output + set to RESET, and then wait forever in a while(1) loop.The problem is that, when I compile the project without optimization "-O0" the STM32 consumes 9 mA, however when I set the "-O1" flag the same code runs at 2 mA. In the "-O1" compilation if, instead of an e

Hi team, We are working for redesign board which should not have any China parts, so we are looking for non-China origin / manufactured part.Could you please confirm the below details for LDO part - LDFMPVR1) Country of origin (Manufacturing / Assembly / Testing)Thanks,Radhika S

Hey everybody,I was wondering if someone could help me correct my firmware that I've written.I created a custom board using the STM32C011F4P6 MCU. I put an FTDI UART-to-USB converter on the board to be able to view outgoing messages from the custom board on my laptop. While writing the firmware needed to demonstrate this functionality of the board, I referenced the C011 reference manual. There, STM describes the following steps to take when transmitting a character via USART, on page 752. I have tried to follow their advice to the best of my ability, but I notice that my board hangs while waiting for the transmission of a character to complete.My testing code (in my main.c) is shown below:int main(void) { char msg[] = "d"; // initialize debug LED user_led_init(); // initialize the usart usart_init(); while (1) { // transmit string of characters (one character here) usart_write_chars(msg,

Hello everyone:I came to a need,that I need to copy part of a dynamic Bitmap to another postion of the same bitmap.I current use a for loop and memcpy func,It works but cost 4ms each run.How can I use touchgfx's blockCopy functions to do this? as DMA2D was already enabled.

Hello, I have made my own STM32F732RET6 board that has a USB FS configured as a Stereo, 24 bit 48kHz Audio Interface and SAI2 connected to an SN75176BDR (Differential Bus Transceiver IC) because I want to transmit AES3-AES/EBU (same as SPDIF) audio data coming from the USB). So USB Audio -> SPDIF TX. Problem is I cannot get it to work right and ALWAYS get noise in the output signal (I have hardware that can receive AES3-AES/EBU so I can hear it). I am suspecting this is a clock issue where the frequency of the SPDIF signal is not high enough to support 24 bit stereo 48kHz, from what I've read, this would require an SPDIF frequency of 6.144MHz. I don't know if "Real Audio Frequency" in the .ioc "Pinout & Configuration" on SAI2 should match this number (6.144MHz) or the Audio Sampling Frequency (48kHz). I cannot get "Real Audio Frequency" to be exactly 6.144MHz. I don't know if this should be the frequency the the SAI2 Clock Mux outputs (SAI2 Clock Mux sources f

stm32wba55g-dk1Subject: Support Required – BLE_Audio_PBP_Sink Auracast Receiver Not Visible on MobileHi Team,I am currently working on the Auracast project using the STM32WBA55G-DK1 board.In this setup, the board is configured as the receiver side (Sink). After building and flashing, the board is expected to appear as AURACAST SINK STM32Auracast1, 2, 3, etc.The project code location I am using is:/home/engineer/Music/STM32CubeWBA/Projects/STM32WBA55G-DK1/Applications/BLE/BLE_Audio_PBP_SinkI have also tested with the following smartphones that support BLE Audio / Auracast:  but not able to  see device  information related  to receiver  side device  in phoneGoogle Pixel: Pixel 7 / 7 Pro, Pixel 8 / 8 Pro, Pixel 9 / 9 Pro / 9 Pro XL / 9 Pro FoldOnePlus: OnePlus

Hi, I'm trying to get a few lines of text displayed on an OLED screen using 4-wire SPI on an STM32H755 board, but I haven't succeeded yet. I've looked into the sample code provided by the manufacturer (which is Arduino-based), but it hasn’t helped much so far. Has anyone worked with this display or with the SSD1322 controller before? I’m mainly looking for example code for the STM32 platform.I’ll be uploading my current progress to my GitHub repo.   Thanks in advance!

I am working with the STM32WB55VGQ6 and using the V1.23.0 / 02-June-2025 STM32WB Copro Wireless Binaries. Specifically,  stm32wb5x_FUS_fw.bin @ 0x080EE000 and stm32wb5x_BLE_Stack_full_fw.bin @ 0x080D0000.The STM32WB BLE API (hci_le) provides the function to read the values for the version information for the local Controller (`hci_read_local_version_information`).Per the BLE Core 5.4 spec:The HCI_Version information defines the version information of the HCI layer. The LMP_Version information defines the version of the LMP. The Company_Identifier information indicates the manufacturer of the local device.The HCI_Subversion and LMP_Subversion are vendor-specific.Since the Bluetooth Core Specification defines these as vendor-specifi

Dear Team,Could you please provide the reference design schematic of STM32WBA5MMG module.I check the documents section.Did not find anything.RegardsHari

Hi, I am trying to use the VL53L7CX to do gesture detection for a household product. A few questions:Do these software downloads only run on a Windows PC? https://www.st.com/en/embedded-software/stsw-img035.html ? I am trying to do embedded development and gesture recognition on a microcontroller.Are the "gestures" recognized only static signs, like a thumbs up, heart, etc? Or does ST have software or firmware written to recognize dynamic gestures, like a wave left, wave right, etc?I am trying to write my own gesture recognition code to run directly on an embedded microcontroller. There seems to be a lot of spurious or incorrect distance data. Currently I am filtering for 1) distances not too close or too far 2) signal_per_spad must be sufficiently high and range_sigma_mm must be sufficiently low and 3) target_status = 5. Still I get bad or

So I want to use a capture compare to measure an input frequency 0.1Hz to 100kHz. Peripheral clock is set to 32MHz to cover full range and maximise speed of calculations. At lower frequency I have to count the number of times the over capture call-back is called, to put into the calculation. However there are a few frequencies where the over capture and edge detection IRQs have a beating effect, I have delt with this on other processors by ensuring the order IRQs are delt with but it doesn't seem to be working here.Sometimes the last over capture is called first, other times in is not, leading to a large jump in my calculated result. As anyone any experience with this issue on the STM32 TIM peripherals?/****************************************************************************** Function : Calculate_Frequency Return : Frequency post calculation as a float *******************************************

Hello,Sorry if it's a *** question but I don't understand something.I want to have an HID and MassStorage usb device. I've seen that ST add USE_USBD_COMPOSITE but I don't understand why we use it for USBD_ClassTypeDef.For me, we have 1 device desc + 1 config desc with 2 interfaces, it's not enough to have only 1 class (with init, setup, dataIn, dataOut, getHsDesc) and put 2 registerInterface in MX_USB_DEVICE_Init and an if(epnum == HidEp) else if(epnum == MscEp) in dataIn and dataOut ?I think I missing something.Thank you for your answer.

Hello,I'm building a BLE receiver using an STM32WBA55CG.The device should only receive BLE advertising packets, never transmit, so I've put it in a "central" role. The device will be used very close to sensitive equipment, so it is very important that the radio never transmit.Despite being configured as a central, and having not called any functions which I would expect to transmit (such as scanning), I am seeing two different RF emission events from the radio:A "chirp" as soon as the device is powered onMultiple "blips" some time later at random intervalsThe "chirp" is a fairly quiet burst, which seems to rise in frequency across the 2.4-2.5GHz ISM band. I assume this is some kind of calibration/set-up, as it's always emitted as soon as HOST_BLE_Init() is called, from what I can see. This is manageable, as I can block the RF path when powering on/initialising the receiver for a few seconds, which should be sufficient to prevent

Hey, we have purchased the Nucleo board H7S3L8-B02. We always run in a timeout during USB core reset. This problem seems quite popular with multiple forum posts. However we still didn't manage to get it to run. I will give a set by step explanation of what we've done. Maybe someone catches the mistake. We made all of our settings in "Application", none in "Boot".USB_OTG_FS settings:USB_OTG_FSMiddleware CDC settings:  

 Hi,I'm working on a project using the STM32WB5MMG, which supports up to 4 simultaneous BLE connections.When a central device enables or disables notifications, my firmware receives the corresponding events (NOTIFY_ENABLED_EVT / NOTIFY_DISABLED_EVT) inside the Custom_STM_App_Notification() function. However, I'm unsure whether the ConnectionHandle parameter in this context reliably identifies which central device triggered the change.Additionally, when the firmware updates a characteristic's value using Custom_STM_App_Update_Char(), we know we must wait for the CUSTOM_STM_NOTIFICATION_COMPLETE_EVT (handled in custom_app.c) before sending the next notification.Now that we're dealing with multiple central devices, here's my main concern:Does CUSTOM_STM_NOTIFICATION_COMPLETE_EVT include the specific ConnectionHandle of the device that received

Good morningI must project a board in this way:This baord will be connect to usb -c of the computer.There will be a converter 5V --> 3.3V.A MCU with bluetooth and antenna integrated.The goal is: the computer must recognize the board like USB serial Port (COMx) like a FTDI? So.. not virtual COM.My question is: can the computer recognize STM32WB5MMGH6TR like a serial USB serial Port (COMx)?Does it need some drivers about it?

I'm using tcpp01-m12 and stm32u5 borad to develop a UCPD sink application.The UCPD module seems works fine, and I can request selected voltage from source.But when I closed the MOS which controlled by tcpp(mcu set tcpp ctrl pin high), the vcc output voltage still have about 500mV.Is this a Characteristics of MOS tube, or any hardware design suggestion?   

Hi, everyone. FYI:I have a board STM32MP257F-DK-C01. I flashed the latest release according to https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP2_boards/STM32MP257x-DK/Let%27s_start/Populate_the_target_and_boot_the_imageIt starts and everything looks ok, but the ethernet is absent. etho is absent if I run "ifconfig", "if up", etc. LEDs are not flashing when cable is plugged.I tried to flash it second time, no changes. I tried to use same sdcard on another  STM32MP257F-DK-C01 board, but had no luck.After reverting to v24.12.05 everything works fine.Some facts that might help from v25.06.11:1) U-Boot prints message: Net: No ethernet found2)

Hi team, We are working for redesign board which should not have any China parts, so we are looking for Non China origin /  manufactured part. Could you please confirm the below details for LDO partLDH40PURY1) Country of origin (Manufacturing / Assembly / Testing)Thanks,Vandana  

NUCLEO F411RE, CubeIDEAs a learning exercise I'm trying to generate 100Hz cosine wave & then eventually do a DFT on it but I'm getting some odd results from the cos function using code below... #include "arm_math.h" #define NUM_SAMP 100 #define SIGNAL_FREQ 100.0 #define SAMPLING_FREQ 1000 static void fpu_enable(void); typedef struct { float real; float imag; }complex_number; complex_number samples[NUM_SAMP]; main() { fpu_enable(); /* Generate a test signal 100Hz */ for(int n = 0; n < NUM_SAMP; n++ ) { samples[n].real = cos(2 * PI* SIGNAL_FREQ * n / SAMPLING_FREQ); samples[n].imag = 0.0; } } static void fpu_enable(void) { SCB->CPACR |= ((3UL << 10 * 2) | (3UL << 11 * 2)); }  When I check the values in samples in the debugger....

Hello,We are working on a smart floor system for sports applications using STM32WB55 MCUs.Each floor tile has its own STM32WB55 that collects sensor data (foot pressure/position).Our requirement:Send data from many STM32WB nodes simultaneously to a PC for visualization (MATLAB/custom UI).Main Question::backhand_index_pointing_right: What is the recommended way to achieve simultaneous BLE data streaming from multiple STM32WB nodes to a PC? Are there example projects or application notes for this scenario?Thank you very much,

Hi,I am trying to set up bootloader on my STM32G030, via usart. When I enter it and send start command (0x7F) I do get ACK response(0x79). I cna read ID and protocol verions, but when I try do use "Go" command to start my application, it gets stuck.What I am sending and responses I get from bootlaoder:Send:  0x7F    (start)Response: 0x79Send:  0x21    0xDE    (go command)Response: 0x79Send:  0x0800004 0x04 (my application program is at address 0x08000000) (0x04 is length of address in bytes for checksum)Response: nothing I assume I am doing something wrong with checksum value, but I cant figure out what.

Original title: "What is the correspondence between the overcurrent protection threshold and the DAC value for STSPIN32G4? Can you provide the calculation formul"Shortened in accordance with the posting guidelines.I have an EVSPIN32G4 evaluation board with a sampling resistor of 0.005Ω.Why does a current of 40A correspond to a threshold of 7427 (0.37V)?

hai everyone,i’m working with the sgtl5000 codec on my stm32mp13-disco board but i get no sound from the headphone jack or line-out. here are my alsa mixer settings after amixer -c 0.  root@stm32mp13-disco:~# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: stm32mp1sgtl500 [stm32mp1-sgtl5000], device 0: 4400a004.audio-controller-sgtl5000 sgtl5000-0 [4400a004.audio-controller-sgtl5000 sgtl5000-0] Subdevices: 1/1 Subdevice #0: subdevice #0  Subdevice #0: subdevice #0 root@stm32mp13-disco:~# amixer -c 0 Simple mixer control 'Headphone',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 127 [100%] [12.00dB] [on] Front Right: Playback 127 [100%] [12.00dB] [on] Simple mixer control 'Hea