STM32 MCUs Products

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Forum Posts

STM32F105 USB Device (VCP)

Posted on February 25, 2016 at 04:43Dear all, I have made a board with STM32F105RCT6 to suit my requirements. I want to use the USB as device (Virtual ComPort). I downloaded the USB libraries from ST, where there is a mention of 105 libraries being ...

nps by Associate II
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VBUS usage by bootloader.

Posted on February 16, 2016 at 10:36I have a board that has an STM32F405 with the USB pins routed to the USB connector. I had problems getting that board to boot, and I was unable to get it to work as DFU device on USB. One of the possible causes is...

Wrong CRC calculation with optimized code

Posted on February 16, 2016 at 20:00Hi.I encountered a problem where I use CRC hardware with optimized code in Keil. I use CRC hardware inside of interrupt routine and without optimization I get correct result. But if I turn optimization on (level 1...

matic by Associate III
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  • 12 replies
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stm32f407zg usb problem

Posted on February 24, 2016 at 16:50Hello!I have a strange problem with the mass storage usb on stm32407ZGt6. Why is it odd ? That's because the same code works on stm32f407ZEt6 just fine. I thought that these cpu's differ only in the amount of flas...

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Doubt in SDIO

Posted on February 23, 2016 at 17:40Hi i have a doubt about reponse register. The manual says that response register format is 48 bits but the SDIO reponse register is only 32 bits. then what about the remaining 16 bits .may be its sounds stupid but...

arunease by Associate II
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  • 3 replies
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STM32F072 TIM2 CH1

Posted on February 24, 2016 at 11:26Hello, we have a simple question. In the device http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00090510.pdf for the stm32f072 page 41 - table 14  colum ''AF2'' describes  thre...

SPI not working on port B

Posted on February 17, 2016 at 12:57Hi to all, I tried to build my own acquisition board using a STM32F030K6 microcontroller and I am experiencing problems with SPI interface. At present only microcontroller is mounted, no other devices on board. As...

STM32F030F4P6 Enter in standby mode without SysTick

Posted on February 24, 2016 at 07:55When disable://if (SysTick_Config(SystemCoreClock/2000-1))//{ while(1){;} }Then STM32 entering and exiting in standby mode. When not disable previous code, then STM32 do not enter in standby mode.When enable previ...

9056766 by Associate II
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Compiling STM32 PMSM FOC LIBv4.2 projects with GCC.

Posted on December 20, 2015 at 20:45Hi, After about 20 hours of work I've managed to compile an example FOC application with GCC.  I have to link with the ''non-source-code'' precompiled library that is provided. In my case: ''MC_Library_STM32F302x8...

Turn on circuitry issue: Delay at start-up

Posted on February 23, 2016 at 21:49Hi,I'm developing on an STM32F410RB Nucleo and have a need for a simple, pushbutton on/off switch for my project.I'd like the pushbutton to be the single on/off switch, however the system will also need to be able...