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Old DMA2 bug found in new MPU STM32F427 ?

Posted on March 04, 2014 at 13:59Hello, We use STM32Fxx MPU in many projects. During the developmentof new equipment with STM32F427, we have run into this problem:We useSPI4, which is controlled by the DMA. Streamer DMA2_Stream1 is used for sending,...

zbynek by Associate II
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[newbie] how to use systick?

Posted on March 05, 2014 at 00:23Hi all,I saw many examples using systick interrupt handler to generate the accurate delay time (like the example below).  My question would be pretty simple here:  why does ''http://www.keil.com/pack/doc/cmsis/Core/h...

ESD and STM32F407

Posted on March 05, 2014 at 01:44It's ESD season once again. I have been getting far too many STM32-F407 TQPF IC's being blown up. I believe ESD is the culprit. Failure mode is a bit used as an input is blowing out the internal pullup or that what i...

VE7HR by Associate II
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STM32L1 up to 512KB Flash

Posted on March 05, 2014 at 16:53STMicroelectronics has extended its STM32 L1 series of ultra-low-power ARM�Cortex�-M3 32-bit microcontrollers with new 512KB flash devices.Key features of the L1 series include: High-performance ARM Cortex-M3 32-b...

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STM32F4 - Peripheral library documentation

Posted on May 27, 2013 at 10:17Hi guys,does anyone have a working Peripheral Library documentation for the STM32F4xx. The one I downloaded from the STM Homepage is now working. I can open it, I see the index and the structure, but I don't see any do...

manuel by Associate II
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DMA triggered DMA

Posted on March 05, 2014 at 11:32Hey everybody, Is it somehow possible to start/enable/trigger a DMA transfer with the help of another DMA transfer? I'm thinking of the following scenario: - DMA transfer 1 is timer triggered (every 1us) and transfer...

Audio Playback and recording

Posted on September 06, 2013 at 11:21I am using the sample application Audio playback and recording available along with the STM32F4 evaluation kit. The sample application will save the recorded file to USB memory stick. Currently we are using this ...

niju by Associate
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STM32F429I-DISCO USB Problems

Posted on January 28, 2014 at 15:56 Hello. I have serious problems getting the STM32F429I-DISCO board to work either in USB Host or Device mode. Now I'm trying to get audio example from USB library v2.1.0 to work but when I use internal DMA mode...

proc9 by Associate II
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flow control uart1 -- odd behavior

Posted on May 10, 2011 at 16:50I'm trying to get flow control working on Uart1 on the discovery board and am seeing some odd behavior.  I have a little test program that receives 10 characters, pauses, and then echos them back.   At the host (linux)...