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it seems that a write to AXI SRAM very shortly before a system reset (via AIRCR) gets lost. I wrote a very short block of code that simply reads a word from 0x24000000, increments it, writes it back, and resets the processor. I can see that the value...
I am using STM32H743BI controller. I need to use backup RAM as nonvolatile ram. So I use external 3V battery and LSE 32.768 crystal for RTC. RTC works well but I can not use backup RAM. I use code like below;PWR->CR1 |= PWR_CR1_DBP;while(((PWR->CR1 &...
Is there any part from STM which able to operates as bluetooth HID keyboard as well as bluetooth touchpad?
Hi :) So I keep reading everywhere that leaving a CMOS input pin floating is bad because it is high impedance, can oscillate, etc. I understand and agree.But while a MCU is starting up (or when you're programming it) all its pin are in input state un...
Hi, I have a STM32F407 board that is running as a full duplex slave. it receives data from a Raspberry Pi configured as a SPI master. Is there a way to receive data from the RPi in a non-blocking mode? One way I could think of was to set the CSN line...
void TIM1_UP_TIM16_IRQHandler (void) { volatile uint8_t t; uint32_t sr; sr = TIM1->SR; sr &= ~TIM_SR_UIF; gpio_set(TIM1_PORT, TIM1_PIN); gpio_clr(TIM1_PORT, TIM1_PIN); TIM1->SR = sr; while (TIM1->SR & TIM_SR_UIF); }Above i...
Hello, In my project I need to have MCU that can handle lot's of data and be power efficient when I need to. In first, i was running STM32L562, but it looks like I will need tones more performance to complete many tasks in time.I use DMA alot, for se...
Is there a way to make the RTC continue keeping time while the wakeup timer is enabled? On my end, time freezes whenever the `cr.wute` bit is set.The RTC is listed as frozen in init mode, but It's not in init mode. It could be a shadow register issue...
Hi following a reset by the IWDG, does the SRAM1 or SRAM2 keep their content?Thanks
I'm trying to set up SPI transfer via DMA which is triggered by LPTIM1 on STM32H745IIK6. Unfortunately for some reason, no SPI activity is present regardless of the config register values, which seem to be correct. Here's the LPTIM1 and DMA1 config:A...
