STM32 MCUs Boards and hardware tools

i have a problem regarding the usage of the jpeg codec on a stm32n657x0h-q to decode images. the project also involves the transfer of such images over eth0 but for the sake of isolation of the problem i have bypassed mongoose. the problem seems to relate only to jpeg interrupts since the hpdma channel0, used to feed the periperal, is working.To develop this project i followed this example for the discovery kit.doing some debugging, i noticed that confr0 is being manipulated (i used a watchpoint), both jpeg_cr and jpeg_sr are being set, but confr1 has a strange behaviour: during Init_process, its registers are properly set, then, when manually halting execution in the cycle in main, the confr1 is set to all zeros. During initialization, registers are as follows:Confr1 has DE and HDR set to 0x1, the others to 0x0;cr has JCEN, EOCIE and HPDIE set to 0x1, the others to 0x0sr has IFTF, IFNFF and COF set to 0x1, the Others to 0x0COF in jpg_cr remains 0x1, as does the JCEN, thus the pheriper

I am using the STM32H7B3I-EVAL board. According to the user manual, both the ST-LINK Virtual COM Port and the RS-232 connector (CN9) use USART1 on PB14/PB15 in the default configuration.I have configured USART1 in asynchronous mode with:TX: PB14 RX: PB15 Baud rate: 115200 Hardware flow control: NoneThe ST-LINK VCP works correctly, and I can see the transmitted data on the PC. However, the RS-232 port on CN9 does not work.I am using a DTECH USB-to-RS232 cable connected to CN9.My questions are:Is any jumper or solder bridge configuration required to enable the RS-232 port, even when using PB14/PB15? Since both ST-LINK VCP and RS-232 share USART1, should the transmitted data appear on both interfaces simultaneously? Does CN9 require a straight-through RS-232 cable or a null-modem cable? Has anyone successfully used the RS-232 port on STM32H7B3I-EVAL with a USB-to-RS232 adapter?Any suggestions on what else I should check would be appreciated.

I’ve set pin PD8 and PD9 for USART3 and I’ve checked the baud rate that is 115200, but usart3 does not transmit data to serial monitor yet. How can I solve the problem?

I’m having an issue with throughput on the STLINK-V3MODS VCP when used with the second BRIDGE UART.  If I set both the VCP and 2nd VCP for 115200 baud, I am only able to simultaneously send 5.76 KiB/s through each (half throughput).  If I use only the VCP at 115200, I’m able to send 11.52 KiB/s (full throughput).I saw no mention of any such limitation in the documentation.  Am I doing something wrong?STLINK-V3MODS firmware 3.17.11Windows 11 version 25H2 (OS Build 26200.8875) 

Hi all,I'm reusing the STM32H7S78-DK's Octo-SPI flash (MX66UW1G45G) and Hexadeca-SPI PSRAM (APS256) sub-circuits on a custom board and want to match the DK's signal integrity. I can't find the fabrication stackup or impedance spec in the docs. Could ST share, for the DK (please confirm board rev):Full layer stackup — copper weights and each dielectric thickness/material. Target impedance (single-ended + any diff) and tolerance for the Octo-SPI / Hexa-SPI nets. Trace width/spacing for those buses, and their routing layer + reference plane. Any length-matching constraints on those groups.For reference, the published Altium reference-design project ships with an unconfigured stackup (single 1.5 mm dielectric, all layers typed Signal), so it doesn't reflect the real fabricated stack — which is why I'm asking for the actual values.Thanks!

Hi everyone,​I'm currently developing a MIDI controller/audio device for guitar VST plug-ins.​The project features a guitar audio input using the CS4272K IC connected to an STM32F446RET6. Additionally, the STM32 will operate in USB High Speed mode using Microchip's USB3300 PHY.​My main challenge at the moment is finding or designing the standalone minimum circuit (schematic) for these components to move forward with the project. Could anyone provide some guidance or share reference schematics for this setup?​Thanks in advance!

Hi there,I am frustrated while searching the web for an normally easy task - 😒I am not able to detect, where Boot0 pin is on STLink-v3MODS module Rev.B.Does anyone know?I also asked ChatGPT and Google, but this only results in false answers - bricking the device.Please hlep - Thanks a lot.STLink-v3MODS Rev.B - front STLink-v3MODS Rev.B - backST32CubeProgrammer v.2.2.3.0 

I soft-bricked a keyboard using a STM32F103C8T6 by, I think, trying to write too large an image, and I guess I overwrote the USB bootloader. I have an identical keyboard and I just ordered an ST-Link v2 but I haven’t been able to pull up instructions for cloning the firmware from the working board using the ST-Link. Is this possible?

I purchased a brand new Nucleo board. plugged it into my computer, USB device detected, please update firmware; yes; then the process stopped “Error 33” Now my BRAND NEW  nucleo board seems bricked.  Is there any recovery mode?  I have tried several times on STM32 Cube Programmer; The board is detected,      Does anyone have any suggestions? - This does not bode well for my first introduction to ST. What a flaky system. I have changed cables etc, several different combinations, changed USB ports, rebooted, all of the standard stuff.  It seems as though the Nucleo board’s serial number is being detected.  The firmware update process starts, runs for a few seconds, several red LED flashes, then halts and gives error 33.  

Hi all,Is there a replacement LCD/touch panel for STM32U5G9J-DK2. I found a company that sells them but they have a minimum order of 200. I’m only in need of the LCD/touch panel, I have the PCB (MB1860A). The manufacturer Rocktech show no info that I could find. Nothing comes up in octopart.com either.Thanks.

Hi, Please forgive my ignorance in advance.I have been asked to acquire the equivalent of the hardware show in the attached photographs (both items).I am hoping that someone in the community can point me at the relevant product in on this website. I don’t have experience of what the product is used for to be able to make a proper judgement myself.I suspect the one that I have is old and has been replaced with a newer model, hence my inability to find a direct match in the product pages.Any assistance would be much appreciated.Thank you for your time.

Hello,I am debugging USB function on STM NUCLEO-H723ZG demo board. I set the USB_DEVICE Mode as CDC(Virtual Port) mode. USB_OTG_HS can as below.Now I can get the virtual port number on the computer. But the VBUS over current LED (LD7) is always on. It indicates the VBUS over current. But I have configured the EN pin of STMPS2141STR as high (Set PD10/USB_FS_PWR_EN) to disable this fault. Can anyone please help to check what’s the problem? Thanks, 

Hello,At present I trt o interface an SPI based SSD1309 Display and I2C based DS3231 RTC with STM32F103RBT6 using Nucleo board MB1136 F103RB C. For your reference I have attached screenshot of port assignment for those devices.  void Init_GPIOs(void) {/* --- 1. Peripheral Clock Enable --- */// Enable clocks for all GPIO ports and AFIO (Alternate Function I/O)RCC->APB2ENR |= (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN |RCC_APB2ENR_AFIOEN); /* --- 2. Pin Remapping & JTAG Management --- */// Disable JTAG/SWD remap to reclaim PB3, PB4, and PA15 for GPIO/Alternate Function usageAFIO->MAPR &= ~AFIO_MAPR_SWJ_CFG;AFIO->MAPR |= AFIO_MAPR_SWJ_CFG_JTAGDISABLE;// Remap SPI1 to PB3/PB4/PB5 as per hardware designAFIO->MAPR |= AFIO_MAPR_SPI1_REMAP; /* --- 3. Initialize Display Control Pins (Soft-Step) --- */// Configuring critical control pins first ensures the display state is stable// before the high-speed SPI clock begins toggling.GPIOB-&gt

Hi,after starting with Nucleo-L432KC development board I need to switch to a variant with more I/Os, and thus I’m creating a stand-alone development board with STM32L462CET in LQFP48 package.I purchased a STLink-V3MINIE for programming/debugging but, like others, was confused on how to properly connect the STLink to the MCU. Since various answers are given in lots of threads I summarized in a simplified sketch what I consider as correct.Please have a look on attached schematic and configuration of MCU done in CubeMX. To keep it as simple as possible I removed everything but the MCU, the STDC14 connector of the V3MINIE and just an LED to apply the minimum blink-example.Please, focus on the connection of STDC14 connector and BOOT0. I think, with this, it is possible to download the blink-software and run the debugger. Am I correct?RegardsSebastian 

Hello,Does someone have footprint, symbol and 3D model for this STM32F407ZGT6 board?Best regards and thanks in advance,Toby 

Hi,I am trying to connect SDRAM AS4C16M16SB from Alliance Memmory to STM32N655X0 MCU, but i did not find any reccomended connection. I am “pinned” this memorry to MCU according STM32Cube MX software and MCU datasheet. But there is not much more information about “autoprecharge” function. Only in reference manual RM0486 is small note “The AutoPrecharge is not supported. However, FMC_A[10] must be connected to SDRAM A[0]”. But the memmory has dual function on the address 10 pin (address 10 + AP). Do you have some recommendation how this memmory connect to STM32N655X0 MCU, or is it suitable for this MCU?Below is my wiring diagram, in purple are FMC signals corresponding with pins on MCU. Is it right or am I must somehow reroute the address signal signal (A10)?Thanks a lot. R. 

 Dear STMicroelectronics Support,In our application, the STM32H7B3I-DK board is used in a "shield" configuration: it is mounted on a carrier/daughter board(PHOTO 2) (via the Arduino connectors CN19/CN20/CN10/CN11) which supplies its power. The daughter board therefore injects a 5V voltage directly onto CN19, pin 1 (5V_VIN), without going through a USB supply or through the standard VIN input of the kit.Power configuration5 V is applied to CN19, pin 1 (5V_VIN). JP1 is configured in the 5V_VIN position. VIN (CN19, pin 8) is left unconnected.MeasurementsVoltage before R114 (1 kΩ): 5.0 V Voltage after R114: 1.6 VThis corresponds to a voltage drop of approximately 3.4 V across R114, which indicates a current of about 3.4 mA flowing through the resistor.I would like to better understand whether this behavior is expected and the purpose of R114 in this circuit.Could you please clarify the following points?Is this voltage drop across R114 normal when powering the board through 5V_VIN? What is

Hi Dear,I connected as picture my SWD pins. What is best solution for SWD Pins? Sould i capasitor, TVS or safety component? Is there any guide for STM32?     

The GT911 configuration (as far as I know registers 0x8047 - 0x8100, but maybe there is more?) on my module got overwritten by my experiments, and touch now has large dead zones, where no touch is registered at all. The driver/sensor channel map is specific to this panel and isn’t in any BSP, so I have no factory copy to restore from, and I also don’t have a 2nd board.Could anyone with a working DK dump their GT911 config and paste the values? (Or does ST have the default config for this module, I sadly couldn’t find it anywhere?) From my understanding it should be as simple as: uint8_t reg[2] = {0x80, 0x47};uint8_t cfg[186];i2c_write(0x5D, reg, 2);i2c_read (0x5D, cfg, 186);  

Hello, I am new to high speed layout and am just learning a new layout tool so the pressure is on. What I need is some layout examples I can study to boost my chances of getting it right. Can anyone help please?

Hello, I was going through the schematic of STM32U5G9J-DK1 where I came across the unused LDO (U19) for generating 1.8 V on this board. I wanted to know the significance of this LDO and what were the reasons to keep it unpopulated?Also, can I expect to see an improvement in the driving capability of this rail in case I wish to populate U19 with TPS76301? If yes, which orderable part no. of the same would be recommended?

The schematic is shown below. I have pulled  down BOOT0 to ground through a jumper ， power supply voltage is normal. Could you please help me check if there is a problem with the MCU configuration。 

Hello Team,I want to store Binary files in STlink-V3 Or any other model , to flash the target on the field without host PC / Cube Programmer.I came to know , this device model has Bianary / hex file drag and drop feater , would it helpful in my scenario ?If not , Suggets any other option. 

Hi everyone,I'm working on a project using NASA's Core Flight System (cFS) running over RTEMS RTOS, and I need approximately 8MB or more of external RAM for the workspace/heap.Currently, I'm using a NUCLEO-H753ZI board (STM32H753ZI), which only has 1MB of internal SRAM. I've been looking for an easy way to add external RAM, but I'm running into some challenges.My questions: Is there an easy way to add 8MB+ of external RAM to the NUCLEO-H753ZI? I've looked into FMC-based SDRAM shields/expansion boards, but I haven't found any off-the-shelf solutions that work well with this board. Is there a shield, module, or expansion board I should know about? If adding RAM to this board is not practical, which STM32 board would you recommend instead? I need: 8MB+ RAM, Cortex-M7 (or similar performance), and preferably existing RTEMS/cFS support. I've seen mentions of STM32H745I-DISCO or STM32H747I-DISCO having onboard SDRAM, but I'd like community input on the best choice. My sta