STM32 MCUs Products
Ask questions, find answers, and share insights on STM32 products and their technical features.
Forum Posts
DMA UART transfer error "HAL_DMA_ERROR_TE"
Hi all,I'm trying to setup a DMA TX UART code using STM32H743VI MCU. The problem I'm facing right now is every time I call HAL_UART_Transmit_DMA function, I get a HAL_DMA_ERROR_TE in my DMA error call-back. The actual line of code is as follows:char ...
Resolved! Wrong min. sample time mentioned in the STM32L475 data sheet.
The min sample time is 2.5 ADC clock cycles and max.ADC clock is 80MHz, with this the sampling time is coming as 31.25ns but you mentioned as 18.75ns. Here, I think ST has taken the ADC clock cycles are 1.5. I felt it as a bug.
Resolved! How to use TIM2 ETR and TIM2 CH1 at the same time?
On F4 (and also other families) The TIM2_ETR and TIM2_CH1 are both on the same pins.The pins are PA0, PA5 and PA15.How can I configure the timer/gpio to get ETR on PA5 and CH1 on PA15 ?The alternate function numbers are the same for ETR and CH1...I n...
STM32H7 WWDG1 on Cortex M7 - Early Wakeup Interrupt Context Backup
Hi,I am looking on getting CM7 CPU Context backup inside Window Watchdog Early Interrupt handler (HAL_WWDG_EarlyWakeupCallback). The CPU context should include LR, PC, PSR, R0 to R3 and R12.Any help, example or code reference is appreciated.Thanks
Is it possible to use STM32H750VB with two QSPI Nor Flash in Memory Mapped & Read/Write Mode
Hi, i want to use STM32H750 with two QSPI Nor flash (W25Q128JV). Purpose of one of them is store static libs and constants. So i will use in memory mapped xip mode. The other one is using in read/write mode for store data.Before, i have used both of ...
Setting clock to 168MHz on the STM32F407 and enabling MCO1 [bare metal]
Hi,I'm trying my hand at bare metal programming on the F4 Discovery board. I've been loosely following this code to get the RCC configuration sequence right to set the main sys clock to 168MHz but with my adaptations. I'm able to see 16MHz on MCO1 (P...
I'm using an stm32f429 2MB dual bank mcu and erasing a sector in flash bank2 from code running in bank1. I can't achieve this without the code in bank1 stalling. I can't find any documentation relating to the stm32f429 2MB to allow this.
For the stm32f429 1MB dual bank there is documentation relating to setting dual bank mode, and for the stm32lxxx there is documentation relating to setting dual bank mode, but not for the stm32f429 2MB dual bank. I'm wondering now if read-while-wri...
STM32CubeF7 QSPI Flash example issue on STM32F769I_EVAL
Hello,I'm currently playing around with the QSPI_ReadWrite_DMA example on an STM32F769I_EVAL board.Link to example: https://github.com/STMicroelectronics/STM32CubeF7/tree/master/Projects/STM32F769I_EVAL/Examples/QSPI/QSPI_ReadWrite_DMA.The demo seems...
