Forum Posts
FMC: How to get full memory access on a 32 bit SDRAM via 16 bit data bus?
1)STM32H745I-DISCO, the bus is 16bit and the memory is 32bit. In the spec there is 128M-bit SDRAM.Question is if full memory 1(28M-bit) is available for usage on this kit?2) If answer is yes on first question. We can only access half of the memory an...
RTC lags
Hi I am having lags in the RTC after one day. I am currently using the Nucleo L476RG board, the RTC oscillator is LSE and my CubeIDE version is 1.6.1. It seems as if in the time intervals where I do not read the RTC it is not updated. The next table ...
Is this correct about the RTC and the sub second counter
I'm using an STM32L051.Is this how the sub second counter works in the RTC? The sub second counter always starts at PREDIV_S when a new second starts?The graph shows a simplified example when PREDIV_S is 3.
Resolved! Hello my friends, Does anyone know why scanf doesn't work here? i checked many things, but only the first printf works and when i write sth in putty scanf doesn't work! i use Nucleo STM32F303K8 Thank you
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/#include "main.h"/* Private includes ----------------------------------------------------------*//* USER CODE BEGIN Includes */#include <stdio.h...
STM32H725 FDCAN：A CAN bus fault is caused when the FDCAN is Stoped
One VCU controller A, one USBCAN converter B, one my H7 device C. A is sending, B and C are receiving. When C Stop FDCAN, both A and B report a bus failure.One VCU controller A, two USBCAN converters B1 and B2, . A is transmitting, B1 and B2 are rec...
STM32: Performance for FFTs
1) We are looking to perform 140 FFTs each having 2048 samples every second. How can I gauge the performance of STM chips for this purpose or are there benchmarks or data published about this?2) Are their suggested libraries for running FFT’s on STM3...
Resolved! Currently we make use of three SPI busses on a STM32F405. SPI1 is a slave and SPI 2/3 are masters. I switch SPI1 to master mode and it just doesn't work. I suspect the APB2 bus but I think I have it set correctly.
Here's my code:SPI_HandleTypeDef spi_handle = { .Instance = DEF_SPI_INS_SPI1, .Init = { .Direction = SPI_DIRECTION_2LINES, .BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2, .CLKPh...
HAL_SPI_TxRxCpltCallback is not reached using SPI on STM32H743
Greetings. I am having an issue with SPI communication Note: In my case, under STM32H743, with SPI4 used as "Full-Duplex Slave" and "Hardware NSS Input Signal". The SPI4 pins used are PE11 (SPI4_NSS), PE12 (SPI4_SCK), PE13 (SPI4_MISO), and PE14 (S...
