Bluetooth with STM32
Is there any part from STM which able to operates as bluetooth HID keyboard as well as bluetooth touchpad?
STM32 MCUs Products
Ask questions, find answers, and share insights on STM32 products and their technical features.
Forum Posts
Floating input pins under startup - is it really that bad?
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...
Resolved! Running SPI receive in the background
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...
Resolved! STM32G474 TIM1 Update Event Triggered Twice In a Row and Channels Enable Was Delayed
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...
Difference in programing STM32L562 and STM32H735 MCU
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...
How to keep RTC ticking when wakeup enabled?
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...
Resolved! IWDG reset and data retention
Hi following a reset by the IWDG, does the SRAM1 or SRAM2 keep their content?Thanks
Resolved! SPI DMA transfer triggered by LPTIM
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...
Typo in RM0438
The interrupt vector table lists TIM3-TIM7 as having the acronym TIM2.
Update STM32 Firmware from external flash
Hello,I am designing an embedded system with these parts:A Low-Power STM32F091RCT6 microcontrollerEC25 LTE/GPRS moduleA 16 Mbit serial flash (W25Q128JV)After each reset, the microcontroller should check if a new version of firmware is available. If s...
