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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...

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arm-elf-objcopy.exe on Windowns 10

Posted on March 03, 2016 at 19:54Hi,I am trying to test the IAP exemple and I am having problems with  arm-elf-objcopy.exe. Every time I run it it seems to enter in a loop where it creates new process non stop and freezes my desktop.  Tried to run a...

slatour by Associate
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More efficient startup code

Posted on March 02, 2016 at 22:03Hi all,For an application I'm working on, I needed to speed up startup. I looked into the .init and .bss routines and saw that they weren't very efficient. I re-wrote them and got about a 2.2x improvement in startup ...

ppannuto by Associate
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What is stm32fxx_xx.s startup file for?

Posted on March 03, 2016 at 09:22Hi all,Thanks in advance for your time spent on this topic.I have spent several months on STM32 project, fine with software coding, but keep confusion on the startup file, which would appear inalmost every project as...

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laojian by Associate II
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  • 2 replies
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Split EXTI4_15_IRQHandler into smaller ISRs possible ?

Posted on March 03, 2016 at 14:48Hi there, is it possible to divide the EXTI4_15_IRQHandler into smaller groups of EXTI Lines ? For example EXTI0_1_IRQHandler is responsible for EXTI line 0 and 1 and EXTI2_3_IRQHandler for EXTI line 2 and 3. But all...

klaus2 by Associate II
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  • 5 replies
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STM32 discovery DMA with SPI

Posted on March 02, 2016 at 14:00 Hello everyone, I'm trying to initialize the DMA for SPI2 but DMA is not working for my code , I don't know the reason. Surely I can say that it's not working as the LED which is turned ON in ISR is not glowing....

How to find the right processor?

Posted on March 02, 2016 at 15:37My particularquestionis I need a processor that can quickly measure the analog voltage i.e., it has the fastest ADC or preferably more, which may be combined in one. I find STM32F303 with 4x 5MSPS ADC, but perhaps e...

berger by Associate II
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FMC SRAM - Initialization parameter

Posted on March 03, 2016 at 15:36 Hello ST-community, I am able to setup my external SRAM and access and test (memtest) its memory regions. It works! However, I do not know if my configurations are correct. It is hard for me to und...