STM32 MCUs products

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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...


Resolved! STM32L476 LPTIM1 counter register

Posted on October 06, 2017 at 21:42I know the counter register read is not very reliable:Bits 15:0 CNT: Counter valueWhen the LPTIM is running with an asynchronous clock, reading the LPTIM_CNT register mayreturn unreliable values. So in this case it...

STM32L011 I2C timing calculation

Posted on February 15, 2018 at 20:15Can anyone help to explain the method to calculate the I2C timing register?I am trying to come up with a value for 400KHz. I2C1 clock is from HSI16 which also has the /div4 enabled.I am very confused by the set up...

RTC Calibration Woes!

Posted on February 15, 2018 at 20:04Hi! Working with the STM32F746ZG RTC. Clock, Calendar, and wakeup interrupt working fine. Have Battery Backup for RTC. I'm trying to perform a Smooth Calibration which does work but I find that not all of the CALM...

Resolved! USB DFU bootloader on STM32F7

Posted on February 14, 2018 at 13:35Hi,I am currently using the STM32F769I-EVAL MB1219 Rev B board. I wanted to boot the MCU in the DFU bootloader mode, and as the manual suggests I removed the 0 Ohm resistor R124. I also set SW1 to `1`.This looks l...


STM32F769I Windows 10 USB not detected

Posted on February 15, 2018 at 15:44I just purchased the STM32F769I discovery board. I am trying to connect my windows 10 machine to the board using the ST_LINK usb connecter on the board, but the USB port does not show up in the device manager. I h...


Posted on February 15, 2018 at 09:32Hi All,in my application, i need sometimes to stop PWM and Force Output to High.I write this code but seem not run good. void forcePwmActive(void){    TIM_OC_InitTypeDef configOC;   HAL_TIM_PWM_Stop(&htim21, TIM_C...

OTP and option bytes flash banks

Posted on February 15, 2018 at 08:33HelloI am developing some project using STM32L4xx microcontroller.In technical reference manual, the chapter describing how the Flash memory behaves explains that these micro have two Flash banks. It also says tha...

Freeze watchdog in debug

Posted on February 15, 2018 at 10:48Hi,I am trying to stop the watchdog when I hit suspend in TrueStudio. Is there something to add in the startup scripts? Or another option to do that ?Thanks,A.

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Posted on February 15, 2018 at 13:34Hi,I am looking at using this WiFi expansion board. I am trying to understand the code example and I would like to integrate it with FreeRTOS. I can see there is a Timer running at 10KHz. I'd like to know whether ...

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