STM32 MCUs Products

Hello guys, is there a SIP library for VOIP or an example of a project without using other third party libraries for VoIP? Thankyou in advance

Hello! We are trying to implement a project that involves the STM32F429 microcontroller and the project must work with hardware floating point. We would like to use the library lib_mp3decoder_cortex_m4_v2.2.0 which is included in the package X-CUBE-AUDIO but this library compiled with soft floating point. This is strange, because other libraries from X-CUBE-AUDIO, for example SRC236_CM4_GCC.a compiled with hardware FPU. Where can I download version of lib_mp3decoder_cortex for hard FPU ?

Some 'L4 RMs suffered/suffer from this, too (lazy to look up).JW

Dear expertI am currently implementing the SMBUS communication with TI BQ40Z80 via STM32L431xxx + Middle ware.However, when observing the smbus waveform, N byte block write does not work properly and block read is also strange.Other register accesses of BQ40Z80 that operate with READ, BLOCK_WRITE cmnd_query operate normally.I would like help with the middle ware stack interface argument.-. cmnd_query , direction , piobuf = STACK_SMBUS_GetBuffer(..) implement. 

Hello, we're using STM32H753XI in our custom board wherein we've ADIN1200 LAN driver, W25Q flash on QUADSPI. we've configured the memory regions for Ethernet Rx, TX DMAs and pool memory like this       RW_DMARxDscrTab 0x30040000 0x60 { *(.RxDecripSection) } RW_DMATxDscrTab 0x30040060 0x140 { *(.TxDecripSection) } memory_RX_POOL_base 0x30040200 0x12676 { *(.Rx_PoolSection) }           we've assigned some memory from address location 0x30000000 for other purpose         RW___SRAM1_Buf 0x30000000 0x14000 { *(.SRAM1_Buf) } RW___SRAM1 0x30014000 0xC000 { *(.SRAM1_data) }         MPU Config is initialized like this, &nbs

Hello all .  I have been working for days to make nucleo f446re reads i2c eeprom .  The i2c eeprom am trying to read uses 0x78 address as the slave address .  I tried use the Nucleo-64 f446re with stm32 cube ide using IsDeviceReady in hal i2c . And i2c scanners from many different sources to try even to ensure that device is connected or not . With internal and external pullups but with no chance . I tried all hal i2c modes as interrupt mode or polling with no chance.  My i2c eeprom part number is tiob46b1.  And i did try to communicate with it using RPI 1 and it can easilly read it or detect it in i2c scanner.  Arduino can really really easy communicate with it . I have tons of this eeproms with many projects i did with uno or esp8266 . For resetting some toners chip uses this unchanging address .  After searching many and many days . I found that f446re source in atm32 ide . Use this address as reserved for 10 bit addr

Hi community,I have a display, which has only CLK, DI and CS pin for SPI communication. It uses TI protocol.The original driver is only working with raspberry pi, I try to import it into my custom STM32 MCU board, the CLK and CS signals seem okay,  Only the MOSI signal is always low. it seems no data is really sent to the display. here is the signal capture from logic analyzer. The whole write sequence: zoom in, single byte write:

Sorry, my first time programming an STM32.  I have a bunch of data I need to store for a few hours, and the thought was to store it in Flash since there's a lot more of it (512k vs. 128k for regular RAM) but it looks to be pretty daunting. I've been reading a bunch of articles online, and they all seem to contradict each other, and they all say things like "all you do is write to the memory location, just like regular RAM" and then in the fine print it lists the 43 things you have to do first, - turn off IRQs, update control registers, etc., etc., etc.Is there an example program for the STM32G474RE that shows a simple "write a bunch of data to Flash" and an equally simple "read a bunch of data from Flash"?Thanks!Chris 

Hello All,I designed and built a bare metal board with an STM32H723ZGT6 and it runs fine.I have blinking LED's, timer / interrupts running, HSE and LSE etc.I have been trying to figure out why if I toggle the power supply the device will not boot up clean.The device appears stable in that I have left it running overnight withn o issues.I have looked through datasheets etc. but think I am missing something really simple.The device is powered through a 3.6V 500ma LDO voltage regulator and I can see no issues on this. Pointers on where too look would be appreciated.  

Hi,I am a beginner in STM32 programming. I chose purely register based programming approach without using HAL as I find it a bit harder and slower but more contributing to the overall system performance in the long term code writing skills. This time I am asking help with the external interrupt code. Idea is to hook the external interrupt on an pulled up button and generate the interrupt each time the button is pressed (when the MCU receives falling edge.) I wrote this code that compiles and runs, but nothing happens when the button is pressed (it should turn 2 leds off). I have already verified and tested the timer, gpio and core clock setup functions, everything is working. So the problem lies somewhere in the interrupt setup syntax or the ISR itself. Since it is my first time working with interrupts on STM32, I hope only minor syntax update will get my code doing its duty. #include "main.h"

Two devices A & B are communicating on UART. A sends data stream to B. B sends one byte data back to A to acknowldge that data has been received. I want to implement if A doesn't receive acknowledgement from B then it display Error message on LCD.Please suggest best logic in A to implement this.As far I think I should start the UART_Receive_IT API for one byte . and complete callback sets the flag for acknowlegement. Incase flag is not set within one second or so after sending data then A display Error message on LCD. Should I start HAL_Delay(1000) after sending data and then check for flag set or not?If anyother best way, kindly suggest. I am still relatively new to coding word..so trying to find best ways.. ;)

Hello,we have a validated project based on the stm32l072rb (FLASH 128KB) microcontroller and in stop mode the entire system consumes 3.5uA.We have updated to the stm32l072rz (FLASH 192KB) and the stop mode current raised to 23uA. In standby mode both boards consume 3uA.Are there different actions we have to take to enter stop mode between the two uC which differ only in flash size?Thanks for your help,Andrea

I am trying to establsih communication between a NUCLEO G474RE and a NUCLEO H7A3ZI-Q thorugh FDCAN. I have successfully accomplished FDCAN communication for both the boards individually using Normal mode as these boards have multiple FDCAN peripherals. I am using two ADM3050E FDCAN transceivers for communication. Now, I have set the baud rate and clock speed of FDCAN same for both boards, yet I have been unsuccessful. So, I wanted to know what I am doing wrong. Please find atteched zip files containing my projects.

Hi,i was hoping, that the Link-V3 would just work, after i used nucleo boards already. But i was dissapointed. I use the GDB server, and it says:ST-Link enumeration failedError in initializing ST-LINK device.Reason: ST-LINK DLL error.I just checked a Nucleo board, and there is no problem.The installation of the driver worked without errors.  

Hi everyone, I'm deep into developing a project that is not only a passion but also a venture I'm financially invested in. I recently ordered a small batch of 50 PCBAs equipped with STM32L476RET6 microcontrollers from a well-known Chinese manufacturer. I've used their services before without any issues, and I’m sure many of you would have heard of them. However, I've encountered a significant challenge and could really use your collective wisdom. I'm experiencing a troubling 50% failure rate with the STM32 microcontrollers across the boards. While there could be various factors at play, one concern I have is the authenticity of the STM chips. I intend to discuss this matter with the supplier, especially since I'm contemplating another order of the same microcontrollers. Hopeful a transparent and open communication will help resolve this issue. I'm attaching a photo of one of the chips on the PCB for referenc

Hi all,I am using an stm32wb55 neucleo board for a wearable based project. I am using ADC1-IN1 to read the adc raw value from MCU pin PC0 of wb55 board.  A voltage divider circuit was connected to scale down the BAT voltage from (4.2-3.7) to (1.8-1.585).Vref  = 3.3v.Below are readings i gotBAT         ADC_BATT      read_raw0               0                     1420 ( Expected = 0 )3.7            1.577               2030 ( Expected = 1960 )4.2            1.8                   2120 ( Expected = 2230 ) Is there any way to rectify this?

RM0440 rev.7 mentions nonexistent RTC_BKPxR in 9 instances.JW

Figure 669. Message RAM configuration clearly shows that the message RAM is 0x350 bytes long which corresponds to 212 32-bit words. But later the following example is used to show, how the message RAM of FDCAN2 follows message RAM for FDCAN1:As an example, for two instances:• FDCAN1: – start address 0x0000 – end address 0x0350 (as in Figure 669) • FDCAN2: – start address = 0x0350 (FDCAN1 end address) + 4 = 0x0354 – end address = 0x0354 (FDCAN2 start address) + 0x0350 - 4 = 0x06A0.Addresses for FDCAN2 are clearly incorrect since this calculation (0x6A0 - 0x354 = 34C) would mean that FDCAN has only 0x34C bytes instead of 0x350.Can you please clearly list base addresses of each peripheral's message RAM?

The word "OSC_IN" is missing from the following sentence:"When the oscillator is configured in a user external clock mode, only the pin is reserved for clock input and the OSC_OUT or OSC32_OUT pin can still be used as normal GPIO."Should say: "...only the OSC_IN pin is reserved..."

Table 285, register map for general timers, TIMx_SMCR, contains two errors:This shows SMSPE in bit 25, I believe it is actually in bit 24.Also it shows SMSPS in bit 26, I think it is actually in bit 25.Please let me know if I'm mistaken. Thank youRM0440 Rev 4 page 1341, STM32G47xxxxxx

Hello Everyone, I want to Update Firmware on my device using Network/WiFi.But I dont Know Where to begane and how to Update. Need solution. Thank You

Hello, I am using LwIP alongside a STM32F7. I am very new to network programming and I was wonder why the webpage is not updating when I modify the html code. If I visit the page via the IDE, the changes are there but on a live version of the site, nothing is updated. Is there a step I am missing to reflect the changes I make on the website?   

Hello STM32 Community,I am currently working on a project where I’m trying to test I2S communication with a MAX98357 amplifier using the STM32F746G-DISCOVERY board. I believe I have configured everything correctly, but I keep receiving an error code of 1 (HAL_ERROR) from the HAL_I2S_Transmit function, which prevents me from transmitting any data.Here is the relevant part of my code:#define SAMPLE_RATE 10000 #define FREQ 140.0 #define PI 3.14159265 #define DEBUG_PRINTF(fmt, ...) \ UART_Printf("DEBUG: %s:%d: " fmt, __FILE__, __LINE__, __VA_ARGS__)void generateSineWave(uint16_t *buffer, uint32_t size) { for(uint32_t i = 0; i < size; i++) { buffer[i] = (uint16_t)(0xFFF * (sin(2 * PI * FREQ * ((float)i / SAMPLE_RATE)) + 1.0) / 2.0); } } uint16_t testToneBuffer[SAMPLE_RATE]; HAL_StatusTypeDef res;void

Dear all,is it possible to use CMSIS-DSP with STM32F302XXX? Actually I'm working with NUCLEO STM32F302R8Tx (but final board will have STM32F302RCT6) and I have two issues :1) I am not able to find lib *.a in repository CMSIS_DSP 2) Following this guide Guide I get this error ../Drivers/CMSIS/Include/core_cm4.h:105:8: error: #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" Is there some hardware limitation?Or am I missing some step? Thank you

Hello,I'm encountering an issue where the printf function is providing an incorrect output for float or double values. The simplified code snippet causing this problem is as follows:float f = 0.33; printf("d:%4.2f;\r\n", f);Upon analyzing the output using a logic analyzer, I initially observe the two bytes \xF0 \x87 followed by "0.33;\r\n", indicating that the "d:" prefix is not matching as expected.I'm using a STM32L432KCU microcontroller with STM32CubeIDE version 1.14.0. The option to utilize floats with printf is enabled in the settings.Would appreciate any insights or suggestions to resolve this issue.Kind RegardsLutz