STM32 MCUs Products

DAC in DMA not working?

dear all,I keep studing the STM32H7 architecture and this time I am trying to control a DAC using DMA which seems an easy task. However, in my case, the output is always at zero. I have used it without DMA and it works, therefore my HW debugging work...

new vs malloc - surprising results with IAR

Hello,Recently I started using c++ application with STM32, and I encounter a very strange behavior:It seems that after 1-3 calls to new() operator the new operator call get hang somewhere into assembly. When I try to step into the problematic new cal...

Using subseconds register on STM32F7 RTC

We have a driver for the RTC which I am trying to enhance with sub-second resolution.I am testing with a tight loop which is repeatedly reading the time. First I am reading the SSR register (which should 'lock' TR and DR?) then the TR, then DR (to 'u...

STM32H750 Timers

Hi,In one of my project I am using STM32H750 controller.I want to measure the pulse width which is an input to the controller whose width will be in some nanoseconds so I want to configure the timer in a way that it can support to start the count fro...

Use MCO for I2S clock(SCK)

Hello​I use STM32L100.I try to use the clock output from the MCO as the I2S clock.​STM32L100 is an I2S slave and outputs an external clock using MCO(24.5MHz).​Can it use without problems？​​Thank you.​

Updated version of the HAL driver related to the package STM32Cube FW_F7 V1.15.0.

Hello, I'm working with F746ZG Nucleo board with fw package STM32Cube FW_F7 V1.15.0. I seem that the included user manual UM1905 is not updated: C functions related to the CAN described in the document don't correspond to the function interfaces defi...

The following error message is displayed: Please tell me how to respond. Error downloading the following files: stm32cube_fw_IO_v112.zip (Target directory already exists)

weird instruction throughput on STM32F756

I try to measure instruction throughput with the following snippet:float bench(int tries, int repeat) { uint32_t t0, t1, d = 0; unsigned A0, A1, A2, A3, A4, A5, A6, A7, B = 1; A0 = A1 = A2 = A3 = A4 = A5 = A6 = A7 = 0;   for (int i = 0; i < t...