STM32 MCUs Products

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Forum Posts

Testing USART1 on STM32F429I-DISCO board

Posted on October 28, 2013 at 15:22Hi All, I am working on USART1 device for STM32F429I_DISCO board. [I have already tested my serial device (code) on stm32429i_eval1 board.] I am using following USART setup/pin mapping unsigned int temp; /* Enab...

H UQ by Associate II
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  • 4 replies
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ESD problem

Posted on November 05, 2013 at 17:21Recently I had a chance to do some quick ESD tests on my board, unfortunately time was very limited. Some basic information: -STM32F103T8U6 MCU, -USB bus powered, -USB is already protected with USBLC6-2SC6, -Plas...

jzawadzk by Associate II
  • 585 Views
  • 1 replies
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STM32 Behavior different when on debugger

Posted on November 07, 2013 at 15:44Hello all,Recently I came across a puzzling situation. I have a system that behaves differently depending on whether I am debugging the application or running otherwise. My environment1) STM32F103x running at 8MHz...

kaustubh by Associate II
  • 1111 Views
  • 3 replies
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STM32F4 - Discovery - Example ''Audio_playback_and_record''

Posted on November 08, 2013 at 10:28Good morning,i have a problem with the board STM32F4 - Discovery. I'm using the example ''Audio_playback_and_record'' for this board. I configured this example to read file from a media usb key ( i have uncommente...

fabrizio by Associate
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  • 0 replies
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STM32F4 Unknown CFSR register constents problem

Posted on November 05, 2013 at 14:31 Hi all, I am porting code from an existing Intel 8031 platform onto a STM32F4 The software performs PID calculations. The softwqare has been running without issues on the 8031 for several years, but...

hermanv by Associate II
  • 1527 Views
  • 8 replies
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How to recover data from SD?

Posted on November 07, 2013 at 12:14Hello everyone,I'm writing data to SD for a few seconds/minutes. If I disconnect the board while recording, when I look at the file with windows, it shows the file with an extension of 0Kb. How can I fix the file ...

Changing Timer Triggers on the Fly...

Posted on November 07, 2013 at 18:17I have designed a variable pulse generator using the STM32F4 and using 7 timers which outputs on three pins, using AF pin couplings to TIM1/TIM8/TIM9(all operated in OPM mode) because I wanted the 6ns resolution p...

jason2 by Associate II
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  • 1 replies
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Multi DMA channel configuration

Posted on November 06, 2013 at 23:06Hi, Last time, I programed multi channel ADC with channel0 of DMA2_stream0. And now I try to add one more channel for USART with DMA2_stream0. I know each DMA stream has maximum 8 channel and they share DMA_SxCR...

STM32F427II (UBGA176) can not program

Posted on November 06, 2013 at 22:39Hi Everyone,I have just finished a project with the MCU STM32F427II but I can not program it. I use the ST-LINK v2 programmer with a 4 wire (SWD).I have check all the connection and I found that the pin (bypass_re...

dombog by Associate
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  • 3 replies
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Problem with Flash Loader Demonstrator and STM32F407ZG

Posted on June 11, 2013 at 13:02Hi,I'm trying to use FLD v2.6.0 with STM32F407ZG rev Z. No problem to connect, uploading an image written by SWD works most of the time, erasing and downloading gives mixed error messages such as for example that eras...