Ask questions, find answers, and share insights on STM32 products and their technical features.
Hello st community,I work on stm32h7, and I use with RTC output alarmA, when the MCU power supple turned off, and RTC work with VBATT to wakeup some component with this signal, but this component needs any pules to wakeup and not woke up with first e...
Hi Everyone!My STM32F401 MCU is a master for communication with an I2C device which requires to write 3 bytes and than read 2 bytes. This cycle repeats each 50 ms. Each cycle includes:Check presence of the slave device using HAL_I2C_IsDeviceReadyWrit...
STM32G4 reference manual description offers only monitoring "Busy flag (BSY)" to check if SPI transfer is complete.In order to make sure the transfer is over I have to do polling of this bit. It is waste of time and resources.Is there any other reaso...
Hi Everyone, in my previous posts i pretty much beat the bush around this subject and i did get some good supportbut i keep getting stuck with this issue.im using STM32H743ZI2 Evaluation board set to 32Mhzthe ADC is 16 bits and running on "fast chann...
There is an inconsistency in RTC shadow register update frequency description. Some places in text mentions that shadow register update happens once every RTCCLK period:34.3.5, 36.3.4: "Every RTCCLK periods, the current calendar value is copied into ...
is there a way to search for which stm32h7 mcus have integrated HS usb phy?the mcu finder product selector doesn't have such filter, is there an app note, a product brief or anything like that?How is one supposed to find such a controller? (besides m...
Hello, i have a problem with my spi communication i don't recieve the information from the slave to the master Master configuration :Slave configuration : I want to receive how many time my led blink and i want to write it on my lcd screen. But every...
We don't understand the bit SCUEN of STM32H7. The description is not very clear: Could you explain what SCUEN means and if the software is supposed to write or read this bit and why ?
Hi,For a project I am using a Wiznet W5500 ethernet chip with STM32F401RET6 MCU to exchange data via HTTP over ethernet with a Windows/OSX software application. The W5500 handles the ethernet communication and speaks to the STM over SPI, which all wo...
Hi,Can somebody please explain what the "Flash memory endurance" value in the datasheet means? The max number of overall writes to the flash page or the max number of writes in the particular "cell" inside the page?Simple context:Let's say that the M...
