Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on December 21, 2011 at 15:59I had a few general questions regarding the RTX RTOS on an STM32F4. What are the limitations with regard to the FPU while using RTX? Is it possible to switch tasks while in the middle of a floating point operati...
Posted on December 19, 2011 at 17:20 Hi I trying to access UART connection between eval board and pc. I am using uart 1 on PA9 and PA To change the signals i am using a MAX From the eval board to the pc the signals are correct, but b...
Posted on November 01, 2011 at 15:00I have been trying to compile the Demo for the STM32F4 Discovery board and I have been getting errors for Missing header files. Does anyone know where I can get the following header files? armcm4.h arm_math.h Than...
Posted on December 18, 2011 at 20:24Hello, Im trying to use st standart peripherial libraries. In my project im adding stm32f10x.h file ,and also i uncommented #include ''stm32f10x_rcc.h'' line. There is a question at this point. When i activate #i...
Posted on December 20, 2011 at 20:21I am using TIM2_CH3 configured for a DMA1 request on Stream1_Channel3. On Output Compare I would like TIM2_CH3 to trigger SPI1 to begin a DMA2 request on Stream5_Channel3. How do I associate the TIM2_CH3 event wit...
Posted on December 13, 2011 at 15:35Hello there, I'd like to set up an ADC and DMA so that converted data is directly written into an array in memory. I modified the ADC3_DMA example but it doesn't work correctly. I replaced ''ADC3ConvertedValue'' ...
Posted on December 15, 2011 at 20:30Hello, I'm trying to put USB communication in suspend mode, but when I force wake up, just can read data from PC, but nothing is sent. The interrupt for correct Tx transmition isn't fired. The end point is well co...
Posted on December 19, 2011 at 10:40Hi, ADC resolution is working for ''ADC_Resolution_6b'' and ''ADC_Resolution_12b'' but not working for ''ADC_Resolution_8b'' and ''ADC_Resolution_10b'' resolutions, they're same with 12-bit resolution. Does anyone...
Posted on December 19, 2011 at 00:33Hi, I am a complete novice to the stm32f4discovery, I have made a 8x8 RGB led matrix using 4 74HC595 8 Bit Shift Registers with only 3 wires going to my now fried arduino, from the old arduino pins I had the 74HC5...
Posted on December 18, 2011 at 01:56Hi, I am trying to get the quadrature encoder working. I found and copied code from these forums for setting it up with a different micro controller but the one on the STM32F4 does not support RCC_APB2Periph_GPIO...
