STM32 MCUs Products

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STM32 OHCI

Posted on September 23, 2012 at 06:30Hi,I'm looking for STM32 OHCI driver. The STM32 USB library is good, but it is not a standard of coding stype, so difficult to expand acpplications.I'd like ohci-stm32.c will appear in the Linux kernel driver lik...

SPI3 DMA Issue

Posted on September 21, 2012 at 20:26We are working on a STM32F417VGTx.  We wrote a DMA driver and confirmed it was working memory to memory.  Next, we began integrating it with an SPI driver (SPI2).  Initially, the engineer working on the SPI drive...

sjenyart by Associate II
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Problem reading the counter/timer register TIM->CNT

Posted on September 21, 2012 at 21:20STM32F407: I use Timer2-5 in QEI configuration, and in my motor control loop (coming every 45usec) I need to read out the current position from TIM->CNT. If I scan the values read out - it is strange that about e...

flyer31 by Senior
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Atomic Operation

Posted on September 18, 2012 at 21:20Hi, as i know stm32 operations alway read-modify-write. Not atomic. If i read below it looks like C is already atomic for some operations. Or is it not guarantee on stm32 platform? http://www.informit.com/guides/...

STM32F103 GPIO Output Speed

Posted on September 21, 2012 at 15:07When I program a GPIO pin, I have to define a ''speed'': 2, 10 or 50MHz. What does this mean in terms of hardware? Is this a filter? If I program the pin with 2MHz I can't output a signal with 5MHz. What is the h...

jpb by Associate
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Output voltage problem with ST802RT1A

Posted on September 18, 2012 at 17:34Hi thereI am using the Ethernet Transceiver ST802RT1A to make my own PCB board following the design of STEVAL-PCC012V1 (http://www.st.com/internet/evalboard/product/250577.jsp) except one thing - I changed the ma...

jinkang by Associate II
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STM32F407 TIM2_CH1

Posted on September 20, 2012 at 20:07Hi, Looking at the data sheet of the STM32F407X, I can't find what pin number the TIM2_CH1 maps to. Please help. Thanks Nhan Pham

npham by Associate II
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