STM32 MCUs Products

Requirement:   I need to repeated sending  a data buffer out through one GPIO like PA1,the buffer data is 16bit ,the buffer length about 100, frequency no more than 10MHZ.Can I use the DMA +TIM way to get it?

Hi, Greetings!!We have been using STM32F446RE MCU in the project. We have implemented the DAC in the application at pin PA4 and PA5. Both DACs are generating similar voltages for different application. The PA4 DAC is connected to ADC of another MCU through a cable with 15 cm length. In few boards we have observed that this DAC at pin PA4 stops working and gives constant 2.4V. Whereas the DAC at pin PA5 works as expected. The DAC at pin PA5 is not connected anywhere at this moment. What would be the reason for this situation. Kindly advise. We have not used any protection circuit from PA4 of STM32 to ADC pin of other MCU. It is simply connected through a cable. Thanks,Purushottam  

Hi everyone,I am doing my internship and looking for a video tutorial on how to use the SHT31 sensor with STM32 without using Arduino. My mentor suggested me to look for videos from YouTube, but so far I have had a hard time finding any. Can anyone recommend a suitable channel or video?Thank you very much for your help!

Hello,We will be using STM32H723 + FreeRTOS in our system and I am hoping to integrate Infineon's CYW4373 as the Wifi/BT controller.I am to connect to the CYW4373 using USB instead of SDIO+UART, as I am running out of pins on the H723 and using USB will save me many pins. However, I have not found any driver/firmware support for this configuration. Can someone help point me to where I can learn more about this configuration?Thank you in advance for any help!Ed  

wrote a basic test for ltdc and if i change any of the ltdc registers and pause the debug it crashes heres the functions for the ltdc ive wrote  void ltdc_gpio_init(void){ //GPIO B,C,D,E,F,G,H,I,J,K Clock Access RCC->AHB4ENR |= (1U<<1);//PORTB RCC->AHB4ENR |= (1U<<2);//PORTC RCC->AHB4ENR |= (1U<<3);//PORTD RCC->AHB4ENR |= (1U<<4);//PORTE RCC->AHB4ENR |= (1U<<5);//PORTF RCC->AHB4ENR |= (1U<<6);//PORTG RCC->AHB4ENR |= (1U<<7);//PORTH RCC->AHB4ENR |= (1U<<8);//PORTI RCC->AHB4ENR |= (1U<<9);//PORTJ RCC->AHB4ENR |= (1U<<10);//PORTK //MODE GPIOB->MODER |= (1U<<3);//PB1 AF MODE GPIOB->MODER &=~(1U<<2); GPIOC->MODER |= (1U<<1);//PC0 AF MODE GPIOC->MODER &=~(1U<<0); GPIOD->MODER |= (1U<<13);//PD6 AF MODE GPIOD->MODER &=~(1U<<12); GPIOE->MO

Hi Everybody,I have a number of Stm32L496VG without crystals but, with pin headers from 3 years ago that I would like to design a new (something) with.These were designed while then learning the stm32 MCUs as I was moving away from PIC MCUs. Bottom line I, decided during that time to develop my own. My question is, since I have the option to run these boards without an external crystal, in this new design I'm generating,I will use an 8mhz crystal but, as close as possible to the MCU. What should I be aware of meaning MCU, Pin header, and Crystal? Below, the MCU and its traces are to be removed. The capacitors and crystal as well, is to be moved closer to the pins as possible. Looking at the Photo, I'm thinking it may be a better idea to moved them opposite side of the headers since the MCU will be topside on its PCB.Will the crystal work this way?

Hello ST Community,I am working on a project where I need to interface an STM32 MCU with the ATWINC1500 Wi-Fi module and am looking for some assistance. Here are the key areas where I need guidance:1. Firmware and Libraries:Where can I find the necessary libraries that support communication between the STM32 MCU and the ATWINC1500?Are there any existing firmware examples or reference projects specifically designed for this interface?2. Interface Method:What is the recommended communication interface to use between the STM32 and ATWINC1500 (e.g., SPI, UART) for efficient data transfer?How do I initialize and configure this interface on both the STM32 MCU and the ATWINC1500?3. Hardware Setup:Any specific recommendati

Hello,I am fairly new to STM32 (and ARM MCUs in general), and I need a bit of help with DMA/MDMA transfers.I am using an STM32H747 dual core MCU and I intent to do some high-speed data sampling on the ADC (currently ~3 MSPS, going to 7-ish MSPS in the future) and process the data in the M7 core. Currently all peripheral configuration, communication etc. is done on the M4 core in order to keep the M7 free for signal processing.Basically, I am getting 64 data samples from the ADC (clocked by a free-running timer) and whenever at 64 sample (128 byte) chunk is ready, I want to move the data into DTCM and trigger the processing on the M7 core using inter-core interrupts. The processing runs in parallel with the ADC getting the next 64 samples.When data processing has completed, the resulting data should be placed back into SRAM (Accessible for the M4 core) for sending out over USART/whatever. My cu

Hello everybody,I'm quite new both on the community and on sensors using.I have 3 STEVAL-MKBOXPRO which I'd like to use to acquire orientation of the upper limb (quaternion, acceleration, gyroscope data). What I've found so far is that the ST BLE Sensor App allows to connect and read data only from one single sensor. How can I read data from multiple sensors simultaneously and syncronize them? Is there any pre-defined script I can use in MATLAB to elaborate data and collect them? Thank you very much for what you can tell me. 

in the process of or at least i want to backup the mcu data and transfer it over to another mcu,  i can connect and see the mcu with my pe cyclone fx but when i read and dump the data i get a empty file 768kb.    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

Hello,I'm using a custom board and have gone through 3 iterations one with stm made EMI filter for SD, one with F2 chip with SDIO and now I'm using stm32l496zg with 4.7k pullups on D0-D3 and CMD lines. When running the completely unchanged code generated by cubemx I keep getting sdmmc_error_cmd_rsp_timeout on initialization. With oscilloscope I have observed 2 of same/similar messages and for some reason there is no clock on the CLK line. I have triple-checked my schematics and tried the following1. 1B and 4B modes2. Different clock sources (HSI48, PLL)3. Different clock divider factors from 0-2544. More things I can't recallAll this happens with sd card either in or out.Ask for additional info if needed and any help appreciated been stuck on this problem for over 50 hours now.

When renaming a project in the project tree view it seems one can rename the project itself but not the directory it initially had been created in.I have a project "myfirst1", renamed it to "myfirst" with all references. In the treeview one can see that it has been renamed, but there is still marked like:myfirst (in myfirst1)Trying to rename myfirst1 to myfirst behind the curtain leads to things getting messed up.How can I achieve this cleanly, so that "in myfirst1" disappears and the project is located in directory "first" in the filesystem?

I am trying to toggle PB6 gpio at 10MHz on the nucleo board. I am trying to use timers to do this. Using LL library with full optimization and 250MHz system clock rate. I was able to get 3.5MHz ish. With timer 1 prescaler and divider being 0. Please help me understand how/if possible to reach 10MHz gpio toggle rate. 

Good Afternoon Sir/Mam, We are Engineering Students. We have a PCB Design and I want to get it manufactured. We want it's single piece for our Prototype Development and Testing, once our Prototype completes the requirement criteria, we will order it in bulk.So, it would be very helpful if you could tell us, if you also manufactures the customized PCB. Thanking You,ANKUR.

Hello, I have a quick question. I'm wondering if I can put the frame buffer in SDRAM connected via FMC when I use FMC LCD controller to controll Display that uses the same address pins of FMC.

I have read quite a few threads about ethernet on the H7, along with several internet posts. I've followed this guide:https://community.st.com/s/article/How-to-create-project-for-STM32H7-with-Ethernet-and-LwIP-stack-working?t=1679361727348As well as this guide:https://github.com/AnielShri/STM32H745_Ethernet/blob/master/Documentation/lwip_nortos.mdThey are similar, with some slight differences with the MPU cache settings.My first test is just basic ICMP - which doesn't work. That is, until I comment out this line:SCB_EnableDCache();So, of course, that implies something with the data cache, and memory locations.

hi every one . I want to program my stm32U5 microcontroller with a Bluetooth module that connected to Uart 1. I decided to Use "STM32 microcontroller system memory boot mode"also I use stm32cube programmer software for programing the MCU. at first I tried to program the microcontroller by connecting the uart1  RX/TX directly with a usb converter to the pc. and it was successful. below you can see the programing process . for the next step I connected the bluetooth Module to my microcontroller and try to do it again but I faced a problem .

Dear all. I stumbled across something I don't really understand. I'm trying to detect a signal using SPI1 on STM32f723 as fast as possible and fill a buffer. I configured SPI1 in SPI_DIRECTION_2LINES_RXONLY mode, set prescaler to SPI_BAUDRATEPRESCALER_2 hoping for 54MHz (I'm running 216MHz clock). Then I fed 6.75MHz square signal to the MISO. And when I configured DMA2 in DMA_NORMAL I get consistent values like 0x0f, 0x0f, 0x0f .... etc. However, when I switch to DMA_CIRCULAR i observe some kind of a shift in the data, like I was receiving more 0s than 1s. Is it even possible (I know it's a hack) to use SPI to consistently sample a signal at 54MHz? Maybe all it is able to guarantee is 54MHz during a single byte transfer, but it is adding some small delays between the consecutive bytes? My code: void spiDmaConfig () { SPIx_SCK_GPIO_CLK_ENABLE (); SPIx_MISO_GPIO_CLK_ENABLE (); SPIx_CLK_ENABLE (); DMAx_CLK_EN

Hi, any provision to plot array data in real-time during debug using F439 Nucleo?Please guide

I have just started evaluating the STM32U575ZIT6QU for a project that my company is working on.While attempting to evaluate the I2C pins for I2C1 on pings PG13 & PG14, I noticed that the pins would not work correctly and would stay low, even with internal pull-ups enabled.After this finding, I switched the pins to be basic Push-Pull output GPIO instead, and still could not get them to work. All the GPIO on the other ports seem to work fine, except for port G. The inputs to port G do not seem to work either. I am using the generated code from the .ioc file, but have followed all the code and registers to make sure that the RCC was getting enabled to the port as well as checking the GPIO registers to make sure it was configured correctly.I have also tried creating a new project to see if there was a configuration issue, but that didn't seem to solve the issue. Is there something specific I need to do to use port G on this part? Or should is it possible somethi

Hi,I have a custom board by STM32H743 and have some problems by RTC. I've used LSE with a 32.768 KHz external crystal. I have 2 or 3 seconds more in each minute. There is no reset within 3 minute and I see about 15 second more.I've used 6.8 pF for CL1 and CL2...Please help me.

Dear all, the problem has been described in the enclosed video, please watch and advise. Since shooting the video, I have flashed the software three times and no change. I suspect, software is fine as many users are already using this board and same display. I have also tested the same SSD1963 display with another same board, the display works fine. This means that SSD1963 has no issues.I suspect one or more of the signal lines from the STM32 MCU board to the SSD1963 display could be dodgy or some parameters in the software does not match with the articular display board but I do not have the tools or mechnism to investigate any further but if you do or you came across this issue, appreciate if you could advise. Thank you.

Hi Every one.When i am trying to write CS bit of RCC_CFGR register of STM32G491RE MCU to select HSE as a system clock (i.e 10) it changes to 11 (01 is default so i guess i am not able to clear these bits before assigning new value). Can anyone tell me why this happening. Here is the code for your reference.if(pCLK->SysClkSrc == SYS_CLK_SRC_HSE){if((RCC->CR) &(1<<CR_HSERDY)){ // Set the system clock source to HSERCC->CFGR &= ~(1 << 0); // Set SW bits to 10 for HSE

I made a project with stm32h7 board, and use pemicro multlink to debug it under keil. I found it keep in systick handler pending but no active.I checked systick module register as:the counter is changed.and then I checked SCB releate registers asand the interrupt handler addr is as

@Amel NASRI (Update: Comment moved here from STM32H745: DS and RM disagree, which to believe?) I've also verified that these errors still exist (though table/page numbers have changed) in latest docs ("DS12923 Rev 2 March 2023" and "RM0399 Rev 4 June 2023"). These were reported 4 years ago, ST stated it would be fixed in the next revision. The next DS revision came out 3 years later and this was not fixed. (Update: There is also a separate documentation error reported in Ethernet send complete i