Solved

I'm looking to add a serial EEPROM to a product, and have a somewhat odd situation. The device will loose power spontaneously and often (few times an hour). My question is: What happens if the M24C01-R looses power during a write operation?  I assume at least that byte will potentially be corrupted, but does it have any other effects?   What about if I write a whole page? Will the whole page be erased before the writing starts ?  ( Of course I'll add CRC checks on the data so I know if I can trust it or not )

Relevant to this post, created new one per @STTwo-32's recommendation.When some USB and SDMMC pins are in the GUI set to alternate function without their respective peripherals active, then there is code generated in MX_GPIO_Init() function that renders FDCAN1 nonfunctional.Here is what's needed:MCU STM32H723ZGTIn the GUI - Pins PD0 and PD1 mapped to FDCAN1 (RX, TX) with the peripheral enabled.Pins PB14, PB15, PD6, PD7, PG11, PG12 mapped to SDMMC (D0, D1, CK, CMD, D2, D3) without the peripheral enabled.PA11, PA12 to USB DM and DP without the peripheral enabled.This code is generated in MX_GPIO_Init() which sets PA11 and PA12 to incorrect alternate function.... /*Configure GPIO pins : PB14 PB15 */ GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF9_SDMMC2; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /*Con

Hello community,i have trouble to identify a defect power semiconductor from ST.The package is TO-220 and is marked with "GF309VW" and the ST-Logo. Can anyone identfiy the device?Thanks in advance!

Hello,I am trying to setup an external ADC/DAC module with an STM32H7 microcontroller. I2C Slave - EVAL-AD5593R-PMDZI2C Master - STM32H757XIH6 on STM32 Embedded Display by RiverdiI am struggling to get the very basics of communication to work as I cannot get a return of HAL_OK.The slave address for the AD5593R should be 0b0010001 as the A0 bit for the IC on the module is always connected to Vcc according to the schematic for the board.The I2C2 peripheral is setup by STM32IDE and the timing is set for 400 kHz which the AD5593R can work on.Any thoughts on what may be my issue would be extremely helpful!!! Thanks a lot. What I have tried:-Swapping slave address bit A0 to 0-Removing left shift for slave address-Adding a 0 for write command to the slave address-Using HAL I2C Master Transmit Hardware Connections:STM32 Pin 2 +3.3V -> AD5593R Pin 6 VccSTM32 Pin 6 GND -> AD5593R Pin 5 GNDSTM32 Pin 34 I2C2_SDA -> AD5593R Pin 4 SDASTM32 Pin 36 I2C2_SCL

I am using an STM32WB5MMG for a BLE application. The device acts as a server. I have configured a number of characteristics with indication permissions. How can I confirm the correct reception of the characteristics updates by the client? I mean, where can I get the indication confirmation?Best regards and thanks.

Hello,i have the inemo-m1 board,  bought waaay back in 2015... back then i remember i managed to work with some sample code from ST.However years have passed... and would be great to find a download location for the sample code.I have tryied searching the internet and ST website, but did not find anything... probably is such a old code...Would be great to find it again... Thank you very much

Steps to reproduce:Create a new project with an STM32F779NIH processorEnable USB OTG highspeed (device only)Add USB_Device middleware (select any class)Generate the project codeInside the USB_DEVICE/App/usbd_desc.c file, the GetSerialNum(void) function, the code is generated with uninitialized device serial variables: static void Get_SerialNum(void){  uint32_t deviceserial0;  uint32_t deviceserial1;  uint32_t deviceserial2;  deviceserial0 += deviceserial2;  if (deviceserial0 != 0)  {    IntToUnicode(deviceserial0, &USBD_StringSerial[2], 8);    IntToUnicode(deviceserial1, &USBD_StringSerial[18], 4);  }} As there is no user block of code, every time my code is regenerated, I need to update those three lines again with: uint32_t deviceserial0 = *(uint32_t *) DEVICE_ID1;uint32_t deviceserial1 = *(uint32_t *) DEVICE_ID2;uint32_t deviceserial2 = *(uint32_t *) DEVICE_ID3; Thanks. 

Hello,I am experimenting on a STM32H7S78-DK board with a custom UI.Sometimes the board looks like frozen and inspecting with the debugger I always find that the core is running, but GUITask is waiting for nema semaphore.The call originates from nema_wait_irq_cl() with cl_id = last_cl_id + 1. A reset may or may not solve the problem: sometimes the board works good, others it hangs up at the first few frames or after some interactions.Removing all widgets and adding them one by one leads to incoherent results. It looks like working and then it hangs again or it may work without any change. Which steps should I take to investigate the issue? Best regards,Alessandro

Hi, we see STM32H7 has Qspi errata as below: But we are not sure where to apply the patch exactly. It says "upon reset and upon switching from memory-mapped", mean in reset function, right after or before "HAL_QSPI_Init"?      

Hallo,I struggled already two days with the implementation of USB_OTG_FS on a STM32F401 board. The most prominent error concerns the Virtual Com Port on the Windows PC: whatever I try, there is always a message saying "USB device not recognized", with as addition "Device Descriptor request failed".In a final attempt I stepped my debugger through the initialization process and encountered the function 'USB_DevConnect(...)', located in the file: "ProjectName>>Drivers>>STM32F4xx_HAL_Driver>>Src>>stm32f4xx_ll_usb.c", line 76. I considered the statements in that function a bit strange, until my eye fell on the function 'USB_DevDisconnect(...)' right below the former one. The body of both functions are exact copies of each other!At first I thought I messed up this file myself, so I checked the "master" file in the Repository for STM32F4xx targets, with the same result. Still I couldn't believe this came from ST, so I downloaded the most recent version, the "STM32Cube_

  STM32L4에서 오디오 재생 에 문제가 있습니다 .   이는 IAR 컴파일러의 경고 메시지입니다. 경고[Lt009]: 일관성 없는 wchar_t 크기 mp3d_htab_armv4.o(lib_mp3decoder_cortex_m4_v2.2.0.a)에는 wchar_t 크기 16비트 Audio_player.o 및 164개의 다른 개체가 있으며, 그 중 일부는 dl7M_tlf.a에 있고 90개의 다른 라이브러리에는 wchar_t 크기 32비트 Mobile_Laser.out이 있습니다.       lib_mp3decoder_cortex_m4_v2.2.0.a  여기에서 다운로드했습니다   https://www.st.com/en/embedded-software/x-cube-audio.html 오디오가 재생되지 않는 이유는 해당 경고 메시지와 관련이 있는 것 같습니다.   이 문제 좀 도와줘   감사합니다      

I need to read data from SD card and then send them via uart in STM32f7 discovery kit. so I did the initial setting such as open the text file using fatfs and then inside a while loop I read the data. but I need to execute that when I press fetch button in my UI, but suddenly all fall apart, I don't know exact reason is it because of interrupt of the SDMMC or is there a way to do it safely. 

Can anyone face this issue at STM32CubeMX tool while generating the code. 

Hi Folks I am porting some code from an old project where i was using FreeRTOS 10 to AzureRTOS.At the end of an ISR callback i used to call portYIELD_FROM_ISR(yield) to give back to the OS(Scheduler) the control on the next valid tick. Is there any equivalent for AzureRTOS ? I tried to search but i found nothing relevant.  RegardsDavide

Hello,   I'm currently controlling a motor with the nucleo-h743zi2 board.   I'm sending commands to the motor driver via PWM and reading the encoder's values. I can currently send commands from a PC and receive encoder values through UART communication. When using UART communication, is there any control available for receiving both encoder values and other data like speed and control signals calculated on the board at the same time?   I want to plot graphs on the PC to easily monitor control performance. Is there any reference material that would be helpful for me?   And as I'm a beginner and have used UART communication, please let me know if there are any other methods available. Thank you in advance for any advice you can provide.

Hello, I am using STM32C011F4U6 MCU.As I mentioned, I wonder if it is possible to do Erase in units smaller than Page.The specification does not describe such a function, but is this function possible?

I am using timer 2 for trigger DAC and GPIO to generate analog and digital values.own timer 2 started with DMA to change ARR by an array.My GPIO array works well and starting to change from index 0 . but my DAC array start from Index 1. as you can see, the longest pulse (200ms) in latest DAC value (dac[9] = 4000) instead of (dac[0] = 2000) time[0] = 200000;time[1] = 100000;time[2] = 100000;time[3] = 100000;time[4] = 100000;time[5] = 100000;time[6] = 100000;time[7] = 100000;time[8] = 100000;time[9] = 100000; dac[0] = 2000;dac[1] = 2200;dac[2] = 2500;dac[3] = 2700;dac[4] = 2900;dac[5] = 3100;dac[6] = 3300;dac[7] = 3500;dac[8] = 3700;dac[9] = 4000; pin[0] = 0x0000FFFF;pin[1] = 0xFFFF0000;pin[2] = 0xFFFF0000;pin[3] = 0xFFFF0000;pin[4] = 0xFFFF0000;pin[5] = 0xFFFF0000;pin[6] = 0xFFFF0000;pin[7] = 0xFFFF0000;pin[8] = 0xFFFF0000;pin[9] = 0xFFFF0000;

Hi  Supporters:    I used the St25r3911b IC to design NFC Module. Then, the new module could work.    However, the waves at the Antenna side are not well, please check the picture at the end.    I think maybe the matching circuit parameters do not match antenna? Please help me, thanks! 

I have been trying to see how fast can I toggle the pins on STM32H7 MCU. I'm using a nucleo-H723zg board. the clock configs are at the highest (550Mhz for CPU, 275 for APB and AHB), the pins are configured as very high speed. But still with a simple while loop such as  while (1) {GPIOE->BSRR = (uint32_t) GPIO_PIN_2;GPIOE->BSRR = (uint32_t) GPIO_PIN_2 << 16U;}the frequency of the PWM I see on the oscilloscope is 7.3 MHz max. Ofcourse the PWM is not the final goalbut I wanted to see how fast this mcu can implemnet the bit toggling.Am I doing something wrong here? 

Hi All,I can not send data from the board to the PC via UART. I can see that USART2 can be used as virtual com. But, when send data from board to the PC, I can not see anything on serial port, I use TeraTerm, Putty, Hercules. I thought the new version of STM32F407G-DISC1 board has this feature built in, but apparently it does not.Can anyone help me with this please ?

Hello,I have an STM32F373 and have successfully enabled a USB virtual com port.I currently send data packets from a PC host to the slave device and include a 'deviceId' in the packet data header.I would  like to support the single PC host communicating with multiple slave devices.   There would be no more than 12 slave devices, and I would like to add new devices. I plan on enabling a USB virtual com port for each slave device, and have them ignore packets not addressed to their deviceId.  Each device would only send a response if the packet is addressed to it.  The single host would ensure it only attempts to communicate with 1 device at a time.  I recall seeing that STM32 allows the USB port to connect to multiple devices in this way. ( not sure though )  What is the best way to connect each slave device to the USB connection?  Should I just split the 2 USB input (DM,DP) and send them to each slave device directly, or should I in

I am using STM32Cube Version: 1.15.0 Build: 20695_20240315_1429 (UTC) and on an STM32F767ZGTx with FW_F7 V1.17.1I have a running and tested application for which I am now including FW Update from SDCard.I got two examples on which to base the new code:The example project for IAP_Main (in STM32769I_EVAL)en.x-cube-iap-sdThe IAP occupies sectors 0 & 1 from 0x0800 0000 - 0x0800 FFFFLinker:  /* Entry Point */ ENTRY(Reset_Handler) /* Highest address of the user mode stack */ _estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */ _Min_Heap_Size = 0x200; /* required amount of heap */ _Min_Stack_Size = 0x400; /* required amount of stack */ /* Memories definition */ MEMORY { RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 512K FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 64K } The application is from 0x0801 0000 to 0x080F FFFFLinker:  /* Entry Point */ ENTRY(Reset_Handler) /* Highest address of the user mode stack */ _estack = ORIGIN(RAM) + LENGTH(RAM

Hi I have the project with the chip STSAFE_A110I don't need to development the application I just need to confirm the hardware is ok, for example, obtained the sn of the chip is successfully or other wayI don't want to add the stsw-safea1-mw to my project, There's no other easy way?

Hi,I have a current project using the M7 that I need to port over to the A7. The goal is to be running bare-metal code on the A7, like we are on the M7. Currently, I am following this open source guide to run bare-metal on the A7 and it seems to work fine. Does ST provide any support for running bare-metal on the A7? Does the stmCubeIDE allow for this? Is there a guide on porting a project from the M7 over to the A7? Any help or information regarding this would be helpful! Thanks!

I am currently ramping up a new project which has a HyperRAM installed (S70KL1282 - like in the example project of STM32H735G). With the help of this sample project code I can successfully write and read with memory mapped mode from the 16 MB RAM - but not 100%.I implemented a test routine, which counts the read errors of faulty reads after writing a pattern to the RAM. I get between 15 and 40 faulty read accesses when checking the complete 16 MB Ram.I tried to change the initialisation parameters for the OctoSPI (clock prescaler, CS high time, recovery time etc. But this doesn't solve the problem.I tried "rewriting after faulty read" - which is however not a solution: After detecting a faulty read, rewriting the pattern and reading it again: returns correct readings. So the RAM seems to be working in general.Can anyone tell, which parameters might be responsible for the wrong writings/readings?Any suggestions welcome!BR GS