STM32 MCUs Products

how to make RTC active when power is off

I am going to use STM32F030k6t6. IC is not having VBAT pin. Please suggest how to make RTC active when power is off

Can a microcontroller take damage from faulty soldered Joint?

I have a microcontroller that restarts by switching a switch to PE1 (Pin 142).The switch is grounded and has a resistance to VCC. PE1 is connected between resistor and switch via a low-pass filter.I'm worried that VDD (pin 144) has a cold solder join...

ADC accuracy without internal re-calibration

Hello,I have an application, where I need ADC samples at a fixed rate, if the device is running. So, I can do a ADC self-calibration at start up and while idle, but not while the application is running.The application can run for several hours and th...

Resolved! SPI using DMA on STM32F103 transmits one word too much

On an STM32F103 I configure SPI in 16bit wide mode and set up a DMA transfer to transmit one word:SPI2->CR1 &= ~SPI_CR1_SPE; SPI2->CR2 = 0; SPI2->CR1 = SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_DFF | SPI_CR1_SPE | /* Some baud rate flag...

How do I read the RTC on the STM32L433 after power up.

Hi I am using the RTC on the STM32L433 with battery backup. After the date/time been set and running , then either processor reset or repoert the unit the date/time resets to the default time. As it happens even after reset (power not disconnected) ...

How to turn on backup RTC registers on STM32F051R8T6

Hello, i have probem with backup registers, which are powered from VBAT pin on Dicsovery board.First problem was CubeMX init, where i can't choose LSE source, because the value of clock box, was not active. I tried differend things like change txt c...

Which pins are needed to program a mcu via swd

hello everyone !i'm using a nucleo board (NUCLEO-F401RE) to program a MCU STM32F301 placed on newly fabricated pcb; the mcu has never been programmed.i have disconnected the jumpers to use the CN4 connector. i have just connected the SWCLK (clock sig...

Can we continuously read registers using I2c ?

i have interfaced opt8320 optical sensor to stm32f446zet.I hav configured STM as master and Opt8320 as Slave. Can i initiate continuous registers read from sensor using I2c ?Please share suggestions regarding this issue.

how to perform i2c implementation on STM32l053R8T6 for interfacing with Lis3dh STEVAL MKI105V1.

I am more of a assembly guy. So I have problem in understanding the functionality of I2C control registers. It would be helpful if you could provide an outline or a pseudocode as how to write to a register or how to read from a register ? How to writ...

Resolved! Oscillator calculation STM32

I want to use a STM32F103, STM32L431, 451 and 471 microcontroller, but i don´t know if the crystal that i selected (ABS07-120-32.768kHz-T and ABMM2-8.000MHZ-E2-T) is valid for this microcontroller.And another question is how to calcule the load capac...

STM32 MCUs Products

Forum Posts

how to make RTC active when power is off

Can a microcontroller take damage from faulty soldered Joint?

ADC accuracy without internal re-calibration

Resolved! SPI using DMA on STM32F103 transmits one word too much

How do I read the RTC on the STM32L433 after power up.

How to turn on backup RTC registers on STM32F051R8T6

Which pins are needed to program a mcu via swd

Can we continuously read registers using I2c ?

how to perform i2c implementation on STM32l053R8T6 for interfacing with Lis3dh STEVAL MKI105V1.

Resolved! Oscillator calculation STM32

Periodic PC sample packets via DWT

Custom board with STM32f446rRE: JTAG TDI not succe...

What is impure_data?

How to read the volume keys from a USB keyboard

Differences in Flash Error Occurrence by Code Loca...

Fixed number (5) of Pulses triggered by external e...