STM32 MCUs Products

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stm32F4 sdio write multiblock problem

Posted on January 10, 2014 at 03:32when i try to write data into a file use SD_WriteMultiBlocks function then some blocks didnt fill the data i want, the block looks filled with old deleted file data and all this blocks start with XXXXXe00 end with ...

STM32F1 encoder problem

Posted on January 09, 2014 at 09:56I have a board with an STM32F100 and a quadrature encoder connected to TIM1 channels 1 and 2 PA8 and PA9, the index output is connected to GPIO pin. I have checked the input from the encoder and it is generating th...

STM32F105 Shared Pin PA9 (USART1-TX and VBUS) conflict

Posted on January 05, 2014 at 19:36Hello, the STM32F105 Device share USART1-TX and VBUS for USB on Port PA9. I need the USART1 for communication and for the internal Bootloader (only USART1 on my used 64pin Devices possible), if the firmware corrupt...

ralf by Associate
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Interrupt priority problem

Posted on January 08, 2014 at 16:06HiI'm working on a project where I use a interrupt from the RTC. This is the one second interrupt. I also use a couple of other interrupts, for example timer 3. The RTC interrup can have the lowest interrupt possib...

m_ by Associate II
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Help me choose a programmer [newbie]

Posted on January 08, 2014 at 21:05I have a legacy system that uses a STM32F103RE device and I would like to connect to it via JTAG (or any other on board option) and view the code on the device to verify it's version (and possibly update).  It seem...

STM32f-Discovery USART send BREAK

Posted on January 09, 2014 at 17:19I have setup the USART to Tx/Rx however my application requires sending a Break. The STM32F programmer's manual refernces sending Idle and Break, provides an example and register for sending an idle character but n...

vendor by Associate II
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  • 4 replies
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STM32F103 USB Virtual COM problem

Posted on October 25, 2013 at 16:13Hi, I am using olimex kit of  STM32F103RBT6 microcontroller. I am new in USB virtual COM programming. I am using STM32_USB-FS-Device_Lib_V3.3.0 with Keil MDK-ARM 5.0 IDE. I opened the precompiled Virtual Com port p...

Measuring Vdd through Vbat

Posted on January 07, 2014 at 23:00Using an STM32F407xx, I want to monitor Vdd by connecting it to Vbat and using ADC1_IN18. If I am not actually powering my device from the battery, is it still possible (or advisable) to do this?The reason that I a...

dibs by Associate II
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  • 7 replies
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