HAL Example how to read VBAT pin for low voltage
I have a capacitor connected and need an example of HAL function that read register which signal that VBAT pin if low level of voltage detected.Thank you.
Forum Posts
How to set SWD pins as GPIO pins in STM32H743ZI ?
Want to use SWD pins as GPIO pins.
USART timeout counter does not operate after a long gap in iincoming characters
Hi,I'm receiving characters in polling mode on USART2 in an STM32L476VG.The USART is set up and enabled. I have set the timeout period using LL_USART_SetRxTimeout(USART2, 30000);ie 3 seconds at 9600 baud.My Get Char routine is as follows:int8_t AquaG...
Excessive backup battery current draw on board power down. Better way to fix it?
I have a board using an STM32F407VGT6 that draws excessive current from the backup battery for the RTC when board power is bleeding down. The board is powered by 24VDC and bucked to +5V with an LDO used to generate the +3.3V power for the STM32. A ...
How best to connect multiple memories
Hi,I am working on a fairly complex setup. I have a need for a fair bit of SDRAM and also potentially a lot ofstorage. So i would like to use NAND FLASH. I also have some small QSPI memory for system profiles and firmware updates etc.My MCU is the ST...
I2c HAL_I2C_ERROR_AF error in slave mode
Hello,I am using I2C on STM32F part STM32F407VG.I have taken example code from https://github.com/PaxInstruments/STM32CubeF4/tree/master/Projects/STM32F4-Discovery/Examples/I2C/I2C_TwoBoards_ComITThe I2C configuration for STM32F as slave are followin...
Chip stops working and does not return to work even with the use of NRST reset.
I have a curious problem on a board that uses STM32F103c8t6 and and it's stopping working after using it for a few days. This problem happens in 20% of my boards.The voltage on the VDD is 3.3V. NRST reset does not work. After disconnecting the power ...
how to communicate two stm32f030k6t6 board using i2c protocol ??
i have Two stm32f030k6t6 board . so i want to program one stm32f030k6t6 board as a master device and second stm32f030k6t6 board as a slave .so how to configuration slave module address and Read byte and Write byte ??
Resolved! STM32G4 ADC clock frequency limitations
Hi,I would like to get some clarification on the maximum STM32G4 ADC clock frequency. In the STM32G473xB datasheet (DS12712 Rev 2), on page 138 it shows a max fADC of 60 MHz for Range 1, single ADC operation. What exactly is meant by "single ADC oper...
STM32F4 Deep Sleep
Hi. I confused about deep sleep on ST's Cortex M4 processor. As I understand If I use HSE as an system clock and go to deep sleep, HSE will turn off. And in wake up ST's document says HSI is used as system clock source after wake up from STOP and Sta...
