STM32 MCUs Products

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Forum Posts

Using Level Triggered Interrupts on STM32F4 and other devices

Posted on January 23, 2014 at 18:40Hi, All EXTI-External interrupts  on STM32Fxx and other STM32 devices implemented by STM are EDGE triggered interrupts. The ARM core however supports Level, Pulse and Edge triggered interrupts. STM32Fxx Tech.Ref.M...

canbu22 by Associate III
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  • 2 replies
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STM32F405RG using SPI2 and SPI3 at the same time with DMA?

Posted on January 23, 2014 at 16:44Hi,In my application I would like to use all three SPI interfaces of the STM32F405RG at the same time, with DMA. I noticed that SPI2 and SPI3 are both assigned to DMA1 Channel 0, but different streams. Does this me...

mluessi by Associate II
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  • 2 replies
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Deep sleep issue on STM32W108

Posted on December 27, 2013 at 11:39Hello,I am using the STM32W-RFCKIT (MB950 and MB951) to create some prototypes. I've tried both Simple MAC sample applications (sun & planets, talk) version 2.0.1 and Contiki (2.5, 2.6, 2.7). In all of these, ever...

vanja by Associate
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  • 1 replies
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STM32F103 - FSMC 8 bit BUS

Posted on January 23, 2014 at 14:24Hello,in RM008 Rev. 14 at Section 21.5.2 -''Supported memories and transactions'' -  it is written (in table 108) that memory data size is always 16 bit - can we write single byte from 8 bit BUS without effecting t...

asherp by Associate
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  • 1 replies
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Forcing float on a matlab generated code

Posted on January 22, 2014 at 16:25Hi all, I use matlab to generate c code and have this code compile in IAR for STM32F4 as a library. So I have no ST libraries added just the c code and h files from matlab. Matlab uses sqrt, sin functions etc. decl...

igal by Associate II
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  • 10 replies
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I2S MCLK slew rate issue

Posted on January 22, 2014 at 20:26Hi, I've been using an audio codec with the STM32F407 Discovery. Data is transferred using I2S, with the STM32F407 as master. It generates an MCLK signal at a frequency of 256*fs, i.e at 2.048 MHz for 8 kHz samplin...

d_1 by Associate II
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  • 4 replies
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USB vendor/product ID

Posted on January 22, 2014 at 12:34Hi,I have seen mentioned in the forum that ST have provided use of their Vendor ID, with a unique Product ID to people using their processors.I would like to ask how I could obtain a unique product ID for our compa...

mark2399 by Associate II
  • 8567 Views
  • 6 replies
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SPI Multi-Master mode with STM32F050

Posted on January 14, 2014 at 15:35Hey Guys, I have some question about the SPI Multi-Master mode with the STM32F050. What I want to do is shown in the Picture. I have two Boards connected over a plug. When they are pluged together, the MCU is the S...

0690X000006051EQAQ.png
dirk by Associate
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  • 3 replies
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PDM Filter problem

Posted on January 22, 2014 at 10:08Hi, can someone help me solve a problem on PDM Filter Init function:PDM_Filter_Init() cannot return from it in second invoke.How can we reset the function and call it again?Thanks!  ..........  RCC->AHB1ENR |= RCC_...

PWM tim3

Posted on January 23, 2014 at 04:02 hi, I'm using STM32F030R8T6 to create PWM with tim3 chanel3 (PB0) but after I check in oscilloscope nothing appear in pin B0. can someone help me find what is wrong with my code. #include ''stm3...