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Forum Posts

STM32 Flash being wiped?

Posted on December 12, 2013 at 11:22Hi This is Not a software problem. This is an electrical problem! We are seeing a number of unexpected Flash sector erasures/wipes. Typically, we are powering up/down the system connecting/disconnecting USB or RS...

chen by Associate II
  • 1020 Views
  • 2 replies
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RTC Time on Discovery L152

Posted on December 06, 2013 at 08:31 Dear Sir/Madam, I am a novice ARM programmer, trying to get the hang of things. It's a bit more complex than programming an 8-bit AVR controller... Anyway I was wondering, why I cannot read th...

klemen by Associate II
  • 2038 Views
  • 11 replies
  • 0 kudos

I2C causes STM32F051 to crash/reboot

Posted on November 29, 2013 at 16:07Hello, I've an STM32F051 where i2c modules can be connected (SFP video modules) These modules should be hot swappable, however it seems that the I2C communication is not dealing properly with these modules because...

evert2 by Associate II
  • 3701 Views
  • 18 replies
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STM32F4 and ARM DS-5

Posted on December 10, 2013 at 03:34Does ARM DS-5 works with STM32F4 out of box?I downloaded one, but seems default project is linux.Thanks #what-it-says-on-the-tin #right-tool-for-the-job

sharethl by Associate II
  • 789 Views
  • 3 replies
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Setting up HSE on STM32F4 Discovery

Posted on December 12, 2013 at 15:48 I'm sure there's probably already a post on how to do this, but I can't find it so here goes: I'm trying to set up the external 8 MHz oscillator on the F4 Discovery. I'm using Keil IDE and have set my...

USART communication via RXNE interrupt only reads one char

Posted on December 11, 2013 at 22:37Hello ST Community,I am using a STM32F2 uC for my project, and I have configured an USART interface as an UART by not initializing the clock settings. In order to program the device the UART is connected to I send...

dmg0048 by Associate II
  • 1274 Views
  • 3 replies
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Certificate Management for Embedded Devices

Posted on December 11, 2013 at 20:24One of the building blocks that we see most commonly misunderstood is how to manage SSL certificates in embedded devices. For this reason we have designed a whitepaper that provides an introduction to SSL certific...

wilfred by Associate
  • 690 Views
  • 0 replies
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STM32f427 clock system

Posted on December 11, 2013 at 11:43Hi,Is there the possibility to achieve the maximum CPU clock speed (180MHz) with the USB clock at 48MHz??According my calculations, to have USB clock of 48MHz I need to reduce the CPU clock to 168MHz, instead of 1...

ababo by Associate II
  • 1127 Views
  • 4 replies
  • 0 kudos