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Forum Posts

Possible mistake in DMA channel 3 selection for STM32L0x2

Posted on October 08, 2016 at 16:31Found a possible mistake in ''DocID025941 Rev 3'' page 276 in C3S[3:0] description    1100: DMA channel 3 remapped to USART4_TX  1101: DMA channel 3 remapped to USART4_TX Is it real routing scheme or it should be ...

STM32F4 multi-channel input capture interrupt confusion

Posted on October 10, 2016 at 01:34 I was hoping to get some clarification on a topic that has me confused with the STM32F4. I'm wanting to use all four channels of Timer2 for measuring period and the number of events for four different incoming ...

mvaras101 by Associate II
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STM32F4 discovery SPI issue

Posted on October 09, 2016 at 07:06Hello,         - I am using STM32F4 discovery board to send data via SPI. i have got it working but there is a small issue. the SS pin goes high before the the mcu finishes sending data. i am using SPI1, and used ...

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Need help - SPI and internal pull-up

Posted on October 08, 2016 at 22:46Hi, I use STM32L073 and configure SPI port. Problem is my slave device has SPI_MISO pin as open-drain, very uncommon. Question is if I configure MCU pin as SPI_MISO can I have also pull-up function on that pin or n...

darko2 by Associate
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CubeMX 4.16.1 deletes user code

Posted on October 07, 2016 at 22:51Hi. I am writing my engineering thesis and I have to build a project based on STM32F746G-Discovery. So I started by creating a project in CubeMX, then writing some code in it in Keil uVision 5, wrote my own LCD lib...

New to STM32 microcontrollers, need some guidance & tutorial

Posted on October 04, 2016 at 03:55Hello, I am quite familiar with the AVR microcontrollers and the Arduino framework but a complete noob in STM32s. I've already asked a few questions about STM32s on another forum, but I think it's not really enough...

hu by Associate II
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STM32F103 ADC clock on DocID13587 Rev 17 is right ?

Posted on October 08, 2016 at 05:10http://www.st.com/content/ccc/resource/technical/document/datasheet/33/d4/6f/1d/df/0b/4c/6d/CD00161566.pdf/files/CD00161566.pdf/jcr:content/translations/en.CD00161566.pdfpage 12 3. To have an ADC conversion time of...

isjeon by Associate II
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Copy data to SDRAM at startup

Posted on October 03, 2016 at 12:39Hello, I am using the STM32F746 Discovery Board with STM32 System Workbench IDE. I know SDRAM is a volatile memory but I want copy a picture to the external SDRAM at startup because it's too big for the internal Fl...

43102399 by Associate II
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Issue with USB DFU, request for direction

Posted on August 15, 2016 at 05:34Hello all, I am working on a project where MCU will enter USB DFU mode via a command (STM32L151rd, USB-FS_4.0, 32MHz PLL driven by HSE) without sensing any button press or changing BOOT0 pin. I've configured USB VCP...

rumlyen by Associate II
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Double arithmetics in Cube L0 (LPUART)

Posted on October 07, 2016 at 18:49Hi, First let me say how much i hate the new Cube L0 concept. Stdperipheral libraries were so much easier to use and cost so much less flash space. Baudrate generator value is calculated using this formula #define ...