Resolved! What is the timer clock frequency for STM32H755 chip ?
Hi, What is the frequency of timer2 which is of 32 bit with prescaler value 0 for NUCLEO-H755 board and how to check it ?
STM32 MCUs Products
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Debugging an application run from external flash memory
Hi,Is there any way to debug an application launched from external flash memory? I use J-Link and IAR, the application is loaded into flash but I am not able to start debugging. I assume that in order for the microcontroller to even start executing c...
Resolved! How to expose QSPI flash (W25Q128JVSIQ) at 0x9000 0000 over USB DFU on STM32H750VB?
Given that my QSPI driver and external loader for the W25Q128JVSIQ are already working, is there a hidden CubeProgrammer/DFU-descriptor trick that lets the stock USB bootloader read/write my external QSPI flash at 0x90000000, or must I build a custom...
Resolved! Flash structure confusing page number
HiiI am using stm32g0b0cet6, while writing bootloader, i am confused with the page number and the total storage.Its total storage is 512 kb, According to the reference manual, The Main memory is shown like belowQuestion1: If each page is 2kb & total ...
Stm32h743ii 2 i2c independant bus
Dear all; I have a *** question but it dont work can we have quantity 2 different i2c bus 1 is reconized but not the second bus /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_LTDC_Init(); MX_QUADSPI_Init(); MX_FMC_Init(); ...
STM32H503CBT6 NRST and VCAP Behavior – Severe Stability Issue
Hello,I’m using the STM32H503CBT6 microcontroller in my project. At this stage, the firmware simply toggles a single LED. I’m using STM32CubeMX (code configurator) and compiling with STM32CubeIDE. The system is configured to run at 250 MHz using a 16...
Questions on FMC throughput with DMA
I'm working on a project which uses DMA to pull data from an external chip controlled by the FMC into a buffer in AXI SRAM, and am seeing a much lower throughput than expected. It looks like the FMC is idle for long periods of time, and I'm looking f...
UART RS485 how to manage half-duplex
Hello,I implement RS-485 on STM32G491. I receive with ReceiveToIdle_DMA and I also transmit with DMA. I need to know if currently something is being received because that means I cannot send data now because RS485 is half-duplex. As far as I know I c...
Resolved! Selection of PSRAM (APS256XXN-OBR-BG, APS6408L-3OBM-BA) that can be used in my design
Hello All, I am developing a design based on STM32N647A0 and have limitation on the number of pins to accommodate 16 data lines. The PSRAM used in STM32N6DK board is APS256XXN-OBR-BG and is based on 16 data lines. So, can i use APS6408L-3OBM-BA, PSRA...
Resolved! STM32 Nucleo boards, Modbus TCP/IP, Server (Slave) and Client (Master) Examples
Hi all, Is there a Modbus tcp/ip Server (Slave) and client (Master) examples for STM32 Nucleo F429ZI board or any other similar boards? Thanks,
