STM32 MCUs Products

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Forum Posts

TIM3 timer period

Posted on May 21, 2014 at 15:46Hi,I use STM32F427 chip. In my application, I am generating a 25.6 kHz signal using an external signal with 9.984 MHz. In order to do so, the calculation for timer period should be as follows; (9.984MHz / 25.6kHz) - 1 ...

asecen89 by Associate II
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  • 8 replies
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Microcontroller does not start

Posted on May 13, 2014 at 21:45I am facing a strange problem using STM3205RBT6Sometimes when I power up my controller it does not get start executing the code.First line of my code is to configure a pin output & toggle it. Sometimes it doesn't happe...

32F429IDISCOVERY SDRAM Code execution error!

Posted on November 02, 2013 at 10:08Hi guys,I have a strange problem about STM32F429-DISCO. I have used this board in a couple of weeks. I have run every hardware blocks successfully including SDRAM. Everything look fine to the right now! I want to ...

tmkaran by Associate II
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  • 6 replies
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Error Message ''Unknown Target Connected''

Posted on October 17, 2012 at 10:14Hi Guys, I have been playing with my STM32F4Discovery board for a few weeks now using the provided programs, but now I wrote one of my own and can not get it to work. I am using some of the files form the IO_Toogle...

Jumping to Application

Posted on May 13, 2014 at 16:53Hi, I'm quite new with the ARM and STM32 world. I'm developing an application wich has to load a bootloader and, at a certain point, jump to the main application. I'm using the STM32F4-Disco. The bootload is quite comp...

Lori B. by Associate III
  • 5673 Views
  • 25 replies
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''Unknown Target Connected'' After I connected 3v to PF9

Posted on May 22, 2014 at 17:02After I connected 3v to PF9, then It happened ''Unknown Target Connected''. I am not sure it is coincident, or that connection caused some problem in hardware  . I was planning to use PF9 as ADC to check the voltage. P...

Linda by Associate II
  • 541 Views
  • 2 replies
  • 0 kudos

Help with STM32F051 USART2

Posted on May 22, 2014 at 03:48STM32F051 Discovery USART2 problem I wanted to know if someone can help me with a problem I am having with the STM32F051 USART. I’m using the STM32F0DISCOVERY kit and have added a few additional LED’s for testing which...

FPU options between GCC and Keil - Link error

Posted on May 22, 2014 at 14:13Hi,Using the STM32F407 discovery board, when trying to link with Keil (armlink) against a static library built with GCC, I encounter the following link error:Object toto.o contains Build Attributes that are incompatibl...

mfm by Associate II
  • 738 Views
  • 0 replies
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stmcdc and Win 8.1?

Posted on May 22, 2014 at 12:12Our product that uses the Virtual COM port example from STM32_USB-FS-Device_Lib_V4.0.0 comes up fine all by itself on all versions of Windows up until 8.0, but for Windows 8.1 it doesn't install until you manually feed...

mats2 by Associate
  • 470 Views
  • 0 replies
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