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...


internal flash

Posted on February 19, 2018 at 09:57 hello! i am working with stm32 cortex-M0? IN FACT i want to know how to modify bytes from the internal flash without erasing the whole page , in addition i don't have RAM space to copy code there and modify byte...

ham10za by Associate II
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Resolved! STM32CubeMX for STM32L4 Discovery kit IoT node

Posted on September 19, 2017 at 04:17Hi,I would like to generate the code by using STM32CubeMX for STM32L4 Discovery kit IoT node (B-L475E-IOT01A).But I don't see the STM32L4 Discovery kit IoT node in the Boards List.Could you suggest for me?Thank y...

Good B by Associate II
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STM systick counter

Posted on July 31, 2012 at 06:55I am trying to use systick counter to verify the accuracy of my RTC. Bascially what I did is check the systick counter against RTC timer in the second interrupt. I find it seems the systick count is heavily affected b...

leon23 by Associate II
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Systick and TIM6

Posted on February 19, 2018 at 12:55The original post was too long to process during our migration. Please click on the attachment to read the original post.

AutoPolling QSPI and memory erase

Posted on February 16, 2018 at 19:52Hello friends.I have a problem. I erase external memory. But this procedure last long time. So I set autopolling mode with interrupt. But It doesn't work.When I send erase command I need wait on WIP bit in status ...


Encoder overflow or underflow?

Posted on February 17, 2018 at 16:56Hello,I configured the TIMER1 to use like an encoder counter. My question is: How I can detect inside the in the interrupt function if the interrupt was caused by an overflow or underflow in the counter?void HAL_T...

Raül G by Associate II
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Setting nss_soft in Master (SPI)

Posted on February 17, 2018 at 23:00I want to set NSS pin to software mode in master using STM32F103RB. But I've few questions?In reference manual, they say,In NSS Software mode, set the SSM and SSI bits in the SPI_CR1 register. If the NSS pin is re...

CAN Filter passes more messages as defined

Posted on February 17, 2018 at 10:09 I have a problem with STM32F042 CAN Filter mechanism. Basically the CAN is working. I can send and receive messages. But my filter are passing more messages to the FIFO as defined. This is leading to an overru...

klaus2 by Associate II
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stm32F4xx - UART - IT - stay enable!

Posted on February 19, 2018 at 09:51hi,stm32F4xx configured with 2 uart(uart1 and uart2) with DMA and uart (UART_IT_IDLE).Sometime, i have a issue regarding the status of uart2 IT stay enable.when i receive message on uart2, fct HAL_UART_IdleCallbac...