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discovery stm32f4's ld1(usb communication)not works

Posted on January 07, 2015 at 08:34hi there is a problem when i connect my discovery board to the computer and USB port, the LD1 on board not works and +5 volt pins on the board, have +2.67 volts the 4 user led's have very low light ... whats the pr...

STM32CubeMX 4.5.0 is incompatible with Atollic True Studio

Posted on November 26, 2014 at 18:28I recently upgraded my STM32CubeMX from version 4.3.1 to version 4.5.0. I did this because 4.3.1 had a bug causing user modifies code in the automatically generated files to be corrupted whenever the project was r...

krubow by Associate II
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Problem with CubeMX 4.5.0

Posted on December 11, 2014 at 17:28I would like to point out the problems that I have encountered with CubeMX thus far.I am trying to set up an SPI communication between an STM32F401RE Nucleo board (Master) and an mbed LPC1768. I tried using the Cu...

backup SRAM contents are not retained

Posted on January 09, 2015 at 10:36Hello.I am programming RTC function including time/date and backup SRAM with STM32F407VG.There is a 3.3V battery on the Vbat and a 32.768KHz xtal in my boards.But there are very strange operations in my board.When ...

kbcloud by Associate
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Operation on PC10 causing interference with JTAG comm.?

Posted on January 08, 2015 at 12:38Hello, a while back I encountered a problem where I am unable to JLink-debug my project. Now I have pinpointed the exact line of the problem: GPIO_SetBits   (GPIOC,GPIO_Pin_10); It's a library func. I've checked th...

st-vlink v2 no target connected

Posted on January 07, 2015 at 09:40hi, im trying to connect a STM32F107VCT6 to flash it, but the st-linkv2 doesnt detect it.I have conected pins:4--GROUND6--GROUND7--SWDIO---------------------------PIN 72  MICROCONTROLER8--GROUND9--SECLK------------...

ARM M4 - Timer 2&5 as Encoder Inputs

Posted on January 08, 2015 at 17:14 Hello everyone, Working on a Differentially Steered robot, nothing new (except to me). I found some code on the web that sets up Timer2 in mode3 (Encoder mode) using PA0 & PA1. I have the contents of t...

duane by Associate II
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STM32F4xx & eMMC

Posted on September 21, 2012 at 21:11Hello all,I have a problem I hope you can help out with. I have grabbed the sample code for writing to an SD card and am modifying it to write to an eMMC chip.In the SD_PowerON() function the original code does a...

dmwarnke by Associate
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How to change target device in STM32CubeMX

Posted on December 13, 2014 at 00:19How do I change the target device in STM32CubeMX?  Do I need to recreate the entire project and copy over the user sections?  or is there a simple way to do it?Right now, I only want to change from STM32F302R8T6 t...

caleb by Associate III
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Loosing scope in global variables

Posted on January 08, 2015 at 14:22Hello!I'm using STM32 CubeMX 4.3.1 generating code in Keil. I experienced extrange behavior with Global variables. It seems as if at some point within a function a local variable loses its contents...But debugging ...

edmunoz by Associate II
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