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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...
Posted on September 18, 2012 at 04:11I have not done any usb before so i'm a little, well a lot ignorant in how it works. Could I get a $3 usb<->wifi dongle and somehow use it on a stm32 m4 ? Would it be really hard ? Where should I start reading. I...
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...
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/...
Posted on September 21, 2012 at 18:08The ST32F4xx user manual, RM0090, on page 205, for the EXTI_PR (pending register) bits says: > This bit is cleared by writing a 1 to the bit > or by changing the sensitivity of the edge detector. The latter one ...
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...
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...
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
Posted on May 20, 2009 at 04:21Power mode - STOP
Posted on September 20, 2012 at 12:05there have been lots of posts on dcmi. but I couldnt find what I wanted on any of them.i have a STM3240-G eval board with ov2640 camera. I am getting pictures at 320x240. I store it in the SRAM and transfer it to...
