STM32 MCUs Products

need help understanding Vref / Vdda

I'm trying to find what voltage reference my ADC is using, as it is not going up to 0xFFF. Along the line, I have become quite confused about the Vref - I used to use other chips where the Vref is just a reference voltage for the ADC, but with STM32 ...

Is there multiple partition support for SDCards in the STM32 processor's HAL or libraries?

We need to erase sensitive data in the field in our STM32 controlled devices. The data is stored on an SDCard. It is assumed a secure erasure of, say, a 16GB SDCard will take a long time. Guessing 30 minutes? We don't have that amount of time. We nee...

STM32F446 does not receive SPDIF data

Hi,I'm trying to use a STM32F446 to receive some SPDIF-data. There are no complicated things to be done with the received data, just a few simple calculations. Unfortunately I do not receive anything at the moment.I have configured the SPDIF-interfac...

How to disable/MASK an exti line?

Try to implement an atomtic operation to avoid a specific interrupt generated by GPIOB GPIO_PIN_8 . If using the code as below, it works.​HAL_NVIC_DisableIRQ(EXTI9_5_IRQn); ​//atomtic operation​HAL_NVIC_EnableIRQ(EXTI9_5_IRQn); ​But tried the code as...

stm32f407 - Question of i2s clock frequency

Hi, I'd like to play music through i2s interface using external audio codec.Refer to "STM32F4xx Reference Manual", Below setting is needed if MCLK is enabled on 48Khz FS.PLLI2SN : 258 PLLI2SR : 3 I2SDIV : 3I2SODD : 1After I configured above, BCLK and...

STM32L152VDT6 extreme current draw on power-up

I have a design in which I am using an STM32L152VDT6 processor. The first prototype boards arrived, and one of the first things I noticed was that there was a resistance of 120 ohms between VCC and GND. I knew something had to be wrong at that point....

Why no variables shown in STM32STUDIO although variables are imported from .out file? My JRE are 1.8 for both 32-bit and 64-bit.

Send commands with CANopen from STM32H7 and canopennode to Elmo motion control gold drive.

Hi,as the title says, I´ve tried sending a OD object (vendor ID, for testing) via CANsend and filling the buffer with the object. I´ve have nothing in response.I´ve also filled the CANsend function with the apropiate code to send data via CANsend()....

How do I generate a clock for other devices using STM32's GPIO

I 'd like to use a GPIO of STM32 to generate a clock for other peripherals. This clock should have the same precision as HSE.Also, the clock should be stable.Also, once set successfully, its stability is not disturbed by running code/interrupts.And i...