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weird problem with clocks and timers

Posted on May 27, 2014 at 12:04 Hi all, at the moment I am trying to configure the update interrupt of timer 2 like this. The update interrupt should occur every 4ms. With the following code everything is fine, the pin is toggling every ...

STM32F103RB ADC Noise

Posted on May 27, 2014 at 17:06HiI'm having problems with noise on the STM32F103RB ADC.At the VDDA pin there is 20mV pk-pk noise from a 300KHz switch regulator.I am using the recommended 1uF || 10nF caps on the pin.I was going to add a series ferrit...

jamie by Associate II
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ST LINK V2 & STM32F205

Posted on May 27, 2014 at 15:17Hi everybody,I'm programming a STM32F205. I program it with a J-LINK and IAR, and it works well.Now I'm trying to use a ST LINK V2. It seems to program my microcontroller, because I have no error, but I have a warming ...

peripheral clock speeds on STM32f207

Posted on May 21, 2014 at 21:43i am using STM32f207i have a flash memory connected to SPI2.  I used the ST examples and i got it working, read/write, .. great, ... the problem is the speed ... how fast can i run SPI2?  There is a setting SPI_InitStr...

epataky by Associate II
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PWM problem

Posted on May 27, 2014 at 19:17Dear all,I have tested the pwm on the STM32F429 EVAL board. It seems all ok.Then I have seen with oscilloscope that with low values of duty cycle from 1% to 20% the pwm works for a while then stops and then restarts.Wi...

STM32L Discovery set clock speed

Posted on May 27, 2014 at 08:11Hi.I wonder how i can config the STM32L Discovery clock speed from 32 Mhz as it is now down to 25 Mhz. #clock #stm32 #discovery #speed #mhz

Configuration differences STM32F401 to STM32F4?

Posted on May 26, 2014 at 10:50Hi, I just try to get an STM32F401 running, but it somehow does not seem to work with the standard STM32F4 system-startup files (e. g. from STM32F4 discovery). Is there some comparison PDF about necessary changes when ...

flyer31 by Senior
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STM32F107RC USART2 TX Problem

Posted on May 27, 2014 at 13:53I use an STM32F107RC board and use  USART2 interface. But USART2 Tx doesn't send first four bytes of each data transaction. I have tried both INTERRUPT and DMA mode.What is the problem? #dma #usart #stm32