Can unpowered H7 MCU suffer active IO?
The H7 MCU may be powered off by ex controller. At this suitation, can this unpowered MCU suffer other active IOs?
STM32 MCUs Products
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Where to specify ADC clock frequency?
Hello,I'm using the H745ZI-Q and the CubeIDE. I want to configure the ADC clock but I can't find the clock settings mentioned in the documentation. Namely the adc_ker_ck. I found the AHB clock but with 240MHz it's a lot higher than specified in the d...
Resolved! timer reset by clearing counter register
Hi,I'm resetting the timer without disabling it, i clear the counter register by __HAL_TIM_SET_COUNTER(&htim2, 0);this will reset the htim2.Instance->CNT, which is the counter period,however the timer was set to be count up to (prescalar) * (counter...
Resolved! Is STM32746BG and STM32F767BG equivalent?
Hi everyone,I workin on a project that use STM32F746BG microcontrollers. I completed design and mass production process for PCB's. Now I working on software that use TouchGFX, LWIP, 7 inch Display and many other component for project. But I fulled 32...
STM32H750-DK FD CAN packet reception is not working in normal mode
HI all,I am developing a CAN FD application using STM32H750-DK. Packet reception to FIFO is working in External Loopback mode and packet transmission works as well. But once I change the mode to Normal, packet reception (FIFO interrupt) dosent fire I...
Problem reading dht11 sensor data with stm32f429i-disc1.
Hi everyone. I am using a stm32f429i-disc1 board to read data from the dht11 sensor, but it cannot read the humidity and temperature. I attach the code that I am using.The screen displays "Hello world!", "Humidity: 0.0" and "Temp: 0.0", and when I u...
Trigger TIM2 using a GPIO as external trigger
Hi,on a STM32L451CE I try to make use of TIM2 timer. I want to start this timer on an external trigger event. From the device datasheet I know that the pin PA0 can be used with AF14 as a TIM2_ETR. However when I setup the timer it doesnt start counti...
Does an ISR violate ongoing I2C communication?
I am doing i2c reads in my while(1) loop. I do have an external interrupt source. I wonder, if the external interrupt arrives while data is being sent on i2c bus, what will happen? The mcu will enter to interrupt service routine clearly, will i2c per...
LPUART baud rate
I have chosen the STM32L07 as it has a LPUART that, from my reading, is ideal for my project where I have to communicate with an SDI12 sensor running 1200-baud 7-bits even parity. When I try and change the 209700bits/s default in the STMCubeMX to 120...
