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I have designed a TDA7575B based audio amplifier, see attached screenshot image. The tone control as configured, will the input signal not be below standard 2v line input voltage that the TDA would typically be used with? I dont know how to add a preamp. Can someone please clarify or help me to get it designed. I apologies and I am new to electronics.

Dear Experts,After erasing all flash, I flash new program to SPC58 and it can just work as soon as flashing the application execution file (e.g. elf).My SPC58 cannot run the application code after reset or re-powered.Based on the SPC58 H Line Reference Manual, I checked the Boot record structure searched by the BAF on SPC58 flash and they all was correct as I've known:Addr 0x00FC_0000: value=0x00A50000Addr 0x00FC_0004: value=0x00FC8000 (It is start address of Boot CPU (Core2) Reset vector table)I think I missing any setting for SPC58 flash but I cannot find more information currently.So please help me if you was experienced about this.Thanks in advance!Ben

Hi there!i hope some oe can help me, are a couple of days i go crazy to find the problem. I create my own program with touchgfx with STM32G071_NUCLEO , i just put one buttonjust for try, i hopen the program with STM32Cubeide. I compile and try to dowload on Nucleo board but that is what apppend. Please some one can help me ? thank a lot Sergio

Hello!I'm using MYD-YA15XC-T board based on stm32mp151 kernel 5.4.And wanted to share files with it via FileZilla ftp/sftp file manager on the PC.But i could not connect to the board, there is always login incorrect error, whichever login or password I try to use: My board uses automatic login, so there is no password that i know, really.And i believe the openssh-sftp package is installed.Do i missing something for sftp/ftp connection to work?Regards, Vlad.

Hi,I've got an stm32H743 webserver with LWIP working ok on dhcp displaying data.Is it possible to alter the html file on the webserver to be able to access other similar webservers?e.g. Say I have 10 machines - each with one stm32 webserver attached and connected to the same lan. Can I use HTML/JS to present a menu so that all machines could be accessed from the same initial web page? Is this even possible?Thanks,Chris

Hello,I want to know if a STM32WB with BLE can connect to a classic bluetooth deviceThank you

Here is my code in main() to config field NRST_MODE: HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); gFlashOBST.OptionType = OPTIONBYTE_USER; gFlashOBST.USERType  = OB_USER_NRST_MODE; gFlashOBST.USERConfig = FLASH_OPTR_NRST_MODE_1; HAL_FLASHEx_OBProgram(&gFlashOBST); HAL_FLASH_OB_Lock(); HAL_FLASH_Lock();I find the NRST_MODE changes from 3 to 2 in the SFRs window after my code when I run it online. Then I ground PG10-NRST directly and the mcu goes to reset. I connect mcu to STM32CubeProgrammer and read the NRST_MODE, it is 3. I change it to 2 and run my code, I find the mcu no longer reset when PG10-NRST comes to low level even though I will change NRST_MODE to 3 in my project which means PG10-NRST will work as a reset pin.I guess that the field NRST_MODE will follow the factory setup which is 3 when mcu power up, then it modified by the user code.1.But why it still reset when I modify the NRST_MODE to 2 in my project?2.How to config PG10-NRS

hi, am doing a keyword spotting in SensorTile_Box. I have done TFlite model and analyzed in MX tool, generated C code. Now, I want to know where the execution takes place. I want to use LED when it recognizes the voice. But, I didn't know where to write the code led to respond to voice.Can you help please?Regards,shankari

Hi everyone, I'm just trying to test and verify some clock frequencies for a PWM waveform are correct. I used CubeMX to generate some code that has set the clock frequency of the MCU to 72 mHz and I am trying to achieve a 20 kHz PWM frequency. I enabled Timer 1 with channel 1 as the output channel (Muxed to Pin E9 on my board). I also made sure to make the call to HAL_TIM_PWM_Start so my timer would actually start counting and thus generate the waveform. Currently I have the pulse set to a value which should generate a 100% duty rate, but no matter what duty rate I set to, I never get any waveform. Connecting the pin to a logic analyzer shows that nothing is every captured and the pin stays low the whole time. I confirmed this by hooking the pin up to a breadboard with an LED and when I step through my code nothing ever drives the LED to be turned on. I noticed during my step through in Keil that the IDR register for Port E will toggle bit 9, so the PWM must be effecting the pin state

An internal voltage regulator allows the external voltage applied on VCC to supply the ST25DVxxKC, while preventing the internal power supply (rectified RF waveforms) to output a DC voltage on the VCC pin.Whats the purpose to output a DC voltage on VCC?I measure 2,3 Volts on VCC once the power is off. Whats the purpose of it? I guess its delivered by the I2C bus?

I searching the simple and usefull way to change wingets location for more flexible debug UI design. For example how to place the gauge first before and 20 pixels lower the chart on the dashboard?The flow looks like:

Hi, Using SPINFamily Evaluation Tool 3.2, STnucleo-f401re and IHM03A1, I'm trying to drive a 48V-9A motor.On IHM03A1, I add 15mOhm/3W resistances in parallel of R1 and R2, so R1 and R2 value is now 13mOhm. According to @Cristiana SCARAMEL​ recommandations, in SPINFamily interface, I choosed current mode, set run current to 9A (117.19mV) and overcurrent threshold to 13.22A (343,75mV).But measured output current is below 8A, do you have recommandations to increase output current up to 9A ? Thanks,Laetitia

I am using stm32MP157F-DK eval board (on windows) and I would like to try the DDR testing tool on cubeMX. But this is my first time trying to do so - I try to follow steps in "U-Boot SPL: DDR interactive mode" (url: https://wiki.st.com/stm32mpu/wiki/U-Boot_SPL:_DDR_int). It states i should define this mode under CONFIG_STM32MP1_DDR_INTERACTIVE - but I dont understand when or how should I do that? Should this be done on full flashlayout_st-image-*** or should i just have boot running?

SOIC 8Marking code CS561 ST 50XH

Hello, on an electronic card which has suffered a surge, i have a electronic coponent which is out of order because it is cracked. On it, i can see the ST logo and on the first line: MX and second line C739. I searched but impossible to find information about function and caracteristics.Does somebody have an idea ?Thanks.

Hardware 1: STM32F767ZGT6 with LSE Crystal Model:  CM9V-T1A-32.768KHZ-7PF-20PPM-TA-QC Maker: Micro Crystal AG Hardware 2: STM32F767IIT6 with LSE Crystal  Model: ECS-.327-12.5-12R-C-TR Maker: ECS IncCompiler: IAR Workbench v8.32.1Driver: STM32Cube_FW_F7_V1.15.0Hi.I have two PCB designs with the above different MCU and LSE crystals chosen from AN4759. However, HAL_RTC_Init(…) usually fails and when it does work the RTC clock is very inaccurate. Can someone please advise what I am doing wrong in by code?Regards, Andrew#include "stm32f7xx_ll_bus.h" #include "stm32f7xx_ll_rcc.h" #include "stm32f7xx_ll_system.h" #include "stm32f7xx_ll_utils.h" #include "stm32f7xx_ll_gpio.h" #include "stm32f7xx_ll_rtc.h" #include "stm32f7xx_ll_pwr.h" #include "stm32f7xx_ll_cortex.h" #include "main.h"   extern RTC_HandleTypeDef hRTC_Handle;   int main(void) { RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_OscInitTypeDef RCC_OscInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkIni

I've always been curious to know if there was a method to find out the data transferred via the DMA into the peripheral has been sent out probably. For example a TimerAll it does isCreate an array with varying CCR1 values (Duty Cycles) Once done, enable the DMA to start transferring the CCR1 values from the array into the peripheral Then from here I monitor the DMA Transfer Complete flag, however this just tells you the DMA is done, but how do I know the peripheral is done sending out the data into the real world? if that makes any senseCode:Create the Arrayuint32_t RGB = GREEN << 16 | RED << 8 | BLUE;   wait();   LL_DMA_SetDataLength(DMA1, LL_DMA_STREAM_4, ((offset * 24) + 50)); for (uint32_t LED = 0; LED < offset; LED++) {   if ((offset - 1) == LED) {   for (int bit = 23 + ((int)LED * 24); bit >= 0 + ((int)LED * 24); bit--) {   if ((RGB) & (1 << ((23 + (LED * 24)) - bit))) {   WS28128B_BUFF[bit] = 0xC0; }

hello everyone, i am using stm32f407 discovery board and i would receive data from a device (load cell amplifier) which communicates via RS232. So my question is : can i use a simple USART in my stm32f4 to receive data ? or i need to use ( RS232 --> UART) converter between the device and my stm32f4 ?

Hi,I'm using a STM32MP157a with yocto dunfell with 5.4 kernel version, and I'm trying to enable the kernel splashscreen. On my board I'm using the RBG lcd interface, and when the system is UP my application in showing curretly. On kernel config I have enabled the flags:LOGOLOGO_LINUX_CLUT224FRAMEBUFFER_CONSOLEbut no tux are showing at startup...Where I'm wrong ?

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Hi,We are working on product reliability calculation and need LIS3DHTR's MTBF and FIT data for the same.Can you please share it?Thanks,Hitesh

I am using the LSM6DSL for a high frequency vibration measurement involving the accelerometer sensor only (gyroscope is turned off). Output data rates are variable between 400-3.3kHz. A recent frequency sweep experiment (0-6kHz applied on external speaker) with the 3.3kHz ODR in high performance mode, analog anti-aliasing filter bandwidth set at 1.5kHz and digital filter at ODR/2 as per the datasheet. In the resultant spectrogram, the frequency sweep signal aliases after crossing ODR/2, ODR, and 1.5*ODR multiple times over, with no obvious roll-off as would be expected with analog filter cutoff at 1.5kHz and digital filter at 1.66kHz. Forcing the analog filter to 400Hz and digital filter to ODR/4 does not seem to change anything.These anti-aliasing filters at minimum ODR/2 should be active at all times, but this seems not to be the case. Is it possible that switching off the gyroscope might be causing issues with the enabling of these necessary filters? Similar aliasing has been noted

Hello, I have a custom designed board with 7 analog inputs on sigma delta ADC's.6 of my inputs are working properly. I have a software issue.When I erase the flash or de-solder the mcu I can measure the correct voltage from my test points.But when I upload the stmcubeide generated empty project, only 1 input goes low. Other 6 inputs are ok.Where to check? What to check?

I would like to investigate velocity control of a brushed DC motor using the STSPIN240/250 devices. The motor velocity can be measured using the back emf from the motor. Does anyone know if there is any off the shelf software for this?I notice the X-NUCLEO-IHM13A1 driver board doesn't even connect the current shunts to the C7/C10 connectors so I'm guessing not. Asking just in case...Thanks