Others: hardware and software

I programmed the STM8S208RB Nucleo board to blink the LD2 LED (connected to pin C5). The `main.c` file is attached. I loaded the file with the `.19` extension using STVP. The file loaded successfully (Image_1.jpg), but LD2 did not blink. LD2 started blinking only after I closed STVP. However, it stopped working when I disconnected and reconnected the USB cable. When I checked the Program Memory using STVP, I saw different, shorter code (Image_2). Why Nucleo board is behaving this way?I am using Win 10 and STVP 3.4.1

Does ST still produce the IMU LSM6DSVDTR and what is the different between LSM6DSVTR and LSM6DSVDTR?

Is there currently a recommended alternative for the ST7540? Also, what is the PLC (powerline communication) chip that ST is currently promoting?

I am troubleshooting a USB device that is not being detected by my computer. What are the main hardware and software checks I should perform to determine whether the problem is related to the USB connection, drivers, or the device itself?

Hi Sir,We plan to extend an existing project into a new one. One of the components is the ESDZV054-1BF4, but we haven't found the corresponding datasheet. Could you provide it?

Hi STMicroelectronics Team,My name is Tanet Suksang as Product component engineer. I am interested in your product  TS3312AMR , The TS33 family of low power series voltage references. Does product has automotive grade ? or any part number with AEC-Q100 qualified. Thank you.  

Good Morning.When I sending the time message request ($PSTMGETRTCTIME), through UART, the gps TESEO-LIV3F answers correctly.But when I try to configure it to send GPGGA & GNGSA messages every second, I doesn’t receive any answer from the GPS ($PSTMCFGMSGLOK or $PSTMCFGMSGLERROR).Respecting the software manual, I send following following message :"$PSTMCFGMSGL,0,1,00000042,00000000*6E\r\n";Is my configuration message wrong ? Thanks a lot.Sincerely,Vincent

Hello,I recently purchased the STEVAL-LLL005V1 evaluation board and I am currently preparing to use it for evaluation and testing.According to the ST documentation for the board, an Android application called Led Drawer is available for controlling the LED matrix through Bluetooth Low Energy.However, I could not find the Android application on the current ST website. I have also searched for it on the Internet, but unfortunately I have not been able to find a working or reliable download of the application.Since I have purchased the STEVAL-LLL005V1 board and the Android application is part of the functionality described in the official documentation, I would like to ask whether ST still has the original application available.If the application is still available internally, could you please provide the APK file by email or by another suitable download method?If the original application is no longer officially distributed, I would also appreciate it if you could let me know whether ther

Hello,I am having a problem connecting to an STM32F103C8T6 (Blue Pill) using an ST-LINK V2.The interesting thing is that this exact ST-LINK programmer was working correctly with both STM32CubeIDE and STM32CubeProgrammer before. I was able to program and debug the STM32 without any problems.Now, STM32CubeIDE gives me the following error when I try to start debugging: Failed to execute MI command:target remote localhost:61234cannot resolve name: The specified class was not found.I checked the Debug Configuration in CubeIDE, and the settings are:Debug probe: ST-LINK (ST-LINK GDB Server) Interface: SWD Host: localhost Port: 61234 Frequency: Auto Access Port: Cortex-M3 Autostart local GDB server: EnabledCubeIDE can detect the ST-LINK during the Scan operation, and it shows its serial number. However, when I try to debug, it says that no ST-LINK with that serial number can be found.I also installed STM32CubeProgrammer to test the connection independently. However, CubeProgrammer is also unab

Hi everyone,I’ve been working on some firmware lately for a media-based project, and I’m looking at the practical limits of decoding high-fidelity mp3 streams (specifically 320kbps CBR) on mid-range MCUs like the STM32U5 series.While standard 128kbps streams are easy enough to handle, moving to the 320kbps standard introduces some interesting challenges regarding the DMA (Direct Memory Access) buffer size and the overhead of the file system (FatFS) when reading from an SD card.I’d love to get some insights from the community here on a few technical points: Buffer Management: For a stable 320kbps mp3 playback without stutter, what is your preferred double-buffer size to minimize SAI (Serial Audio Interface) underruns? Hardware vs. Software Codecs: Are most of you using dedicated external hardware decoders for high-fidelity audio, or are you achieving stable results using software libraries like Helix or minimp3 on the Cortex-M33 core? Power Optimization: Since 320kbps requires more

I'm working on a touchscreen application and I'm looking into ways to protect the display surface from scratches and everyday wear.I'm curious whether anyone has tested a transparent protective film over an STM32-based capacitive touchscreen.In particular, I'd like to understand:Does the additional film thickness affect touch sensitivity? Can the adhesive layer interfere with capacitive touch detection? Does optical clarity remain good enough for a UI developed with TouchGFX? Are there recommended film materials or thicknesses for touchscreen applications? Could the film cause any issues with heat or long-term display performance?I'm mainly interested in practical experience from anyone who has tested protective films on embedded touchscreens.Has anyone tried this with an STM32 + TouchGFX project, and what were the results?

I'm trying to identify an STM8 microcontroller on a BLDC ceiling fan motor-driver PCB (JV2-Gorilla-2017 Atomberg fan appliance board, not an ST eval board), with the goal of confirming whether I can reprogram it via the exposed SWIM header.What I've confirmed so far:A 4-pad unpopulated header silkscreened SWIM / RST / 3V3 / GND Two TSSOP-20 ICs on the board (designators U3 and U4 in silkscreen) U4 shows a visible STMicroelectronics logo under magnification, but the part-number text beneath it is too worn/corroded to read reliably even after cleaning with isopropyl alcohol and raking light U3's top marking is fully illegible (possibly unbranded, possibly just more worn) Board also has a separate 8-pin SOIC gate-driver-looking IC, a 3-pin Hall-sensor connector, and a 3-phase MOSFET bridge under a heatsink — consistent with a BLDC commutation + speed-control boardQuestions:Given only a TSSOP-20 package and a genuine ST logo, is there a way to narrow down which STM8 family/part this likely

Hi, I ordered on rs-online memory M24M02E-UFMN6TP. The memory that I received has SMD marking 24M02FU (photo: https://ibb.co/gLCbX0vb). I was unable to lookup this marking on the st.com web nor in the M24M02E datasheet. The rs-online vendor also don’t know :). Can anybody verify that it’s the M24M02E, i.e. memory with the following datasheet: https://www.st.com/resource/en/datasheet/m24m02e-u.pdf ? I need 2 MBit, up to 5 ms write. IMHO the suffix 'E' distinguishes the 5 ms memories from the 10 ms and I need to be sure it’s the 5 ms version of the memory. Thanks.

When running an LCD display project, the screen fails to turn on after I cut the power and turn it back on.It only comes on when I short the NRST and GND pins.I have a 10k pull-up and a 100nF pull-down connected to the NRST pin; what should I do?

Hello, does anybody know if its possible to get the VIPER06XSTR onto ST eDSIM. I thought this would be available but its not.

#include "dac.h"#include "main.h"#define CURRENT_MIN    5#define CURRENT_MAX    400#define DAC_MIN        248      // 0.2 V#define DAC_MAX        4095     // 3.3 Vvoid DAC_Init(void){    HAL_DAC_Start(&hdac1, DAC_CHANNEL_1);    HAL_DAC_SetValue(&hdac1,                     DAC_CHANNEL_1,                     DAC_ALIGN_12B_R,                     4095);}void DAC_SetCurrent(uint16_t current){    uint32_t dac;    if(current < CURRENT_MIN)        current = CURRENT_MIN;    if(current > CURRENT_MAX)        current = CURRENT_MAX;    dac = DAC_MIN +          (((uint32_t)(current - CURRENT_MIN) *            (DAC_MAX - DAC_MIN)) /            (CURRENT_MAX - CURRENT_MIN));    HAL_DAC_SetValue(&hdac1,                     DAC_CHANNEL_1,                     DAC_ALIGN_12B_R,                     dac);}void DAC_OutputOff(void){    HAL_DAC_SetValue(&hdac1,                     DAC_CHANNEL_1,                     DAC_ALIGN_12B_R,                     0);} 

Hello,I am trying to use the M95M04 as a SPI slave device from the ADI DS28E18 one-wire bridge. A picture has been uploaded to show the entire hardware setup. My main issue is that whenever I try to send data to the EEprom and then read that data back, I only get FF as a result. When setting write enable or write disable, the MISO line pulls low like would be expected and returns 00. I have used an oscilloscope with a bus decoder to ensure that the correct commands are being sent out of the DS28E18 to the M95M04, and they are. We never see the WIP bit go high, and we have tried many changes in both the hardware and the software. Our current hardware setup is based off of the schematic image I have posted, but there have been some modifications. C1001 has been changed to 10uF X7R, C1002 has been changed to 1uF X7R, and 10k pull-up resistors have been added on the S# and D pins. From the software side, I have attached the code that our software engineer is using. I have tried replacing t

Anybody worked with STM32F446RE in WOKWE? please guide, or suggest best simulator for STM32F446RE. 

Hi. I built the PCB myself at home. While working, I noticed strange anomalies in the image. The anomalies are in different places and on different photos. I asked AI but didn't get a satisfactory answer. I tried reducing the frequency without any positive effect. I suspect ESD or power supply issues. The traces are very thin, 0.4 mm for power and 0.35 mm for data. Has anyone experienced this? 

Hello,I would like to confirm my interpretation of the marking M1013 on the old BUX10 transistors (TO-3 package) I’m using. I believe M stands for Malaysia and 1013 stands for week 10 of 2013 ; is this correct ?Thanks !

Hi ST Team, for the ECMF02-2BF3 and have a question regarding the recommended stencil opening. In the datasheet, the stencil aperture is specified as 220 µm, but it is not clear whether the aperture should be: Square (220 µm × 220 µm)  or  Round (220 µm diameter)

I want to make analytical loss model of SCT50N120 device so for that I need Eon and Eoff vs Rg(ext) variation plot. where to find it?Sorry for the wrong description name .

  I am using STM32F411CEU6 Black Pill from WeAct. Stlink was working I was able to flash the code but now after testing when I tried to connect it wouldn't connect I keep getting this error. I am using stlink clone.  USB under DFU mode gets connected, full chip erase works but when I try to flash the code I get this error      Please help me out

Hi,I struggled a while to find out why my STM8S I2C was always “Busy”.Even AI had some headaches (except only one put me on the track ...)This device requires to configure the definition of I2C pinout in special FLASH.To do this, compile your project and open ST Visual Programmer.Load your “My_project.s19” file. There are three TABS in the window: PROGRAM MEMORY, DATA MEMRORY and OPTION BYTE. Click on option byte, select AFR6 and change it for “I2C SDA SCK” instead of “AIN4 AIN5”. Save your “My_project.s19” file.When your will burn the device, it will write the new parameters in the FLASH and the device will always be configured for I2C. You do this exercise only once.Hope it will help ….

Could you share ST60A3H1 IBIS model?Due to ST60A3H1 include eUSB signal, we would like to simulate the eUSB signal integrity on our design layout.ThanksHank