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Posted on June 03, 2013 at 15:06Hello I want to use sqrt (square root) function to calculate sqrt (x^2 + y^2) but i haven't math.h in my root this is the error undefined reference to `sqrt' collect2: ld returned 1 exit status how can i fix it ple...
Posted on June 03, 2013 at 10:42Hello, I'm currently programmed a STM32F4 Discovery with the IDE Atollic. In my program, I get two fonction, the first in the file ''stm32f4xx_it.c'' and the second in the file main.c and i want to known if i can tran...
Posted on June 03, 2013 at 13:36Anyone know the fastest possible frequency that any GPIO pin state can be toggled?
Posted on June 02, 2013 at 15:52Hi community, for a few days i try to use the SPI1 on the F4Discovery board. I use the PA5-PA7 pins on AF5. But after my init the code does nothing? What is wrong in my init function? #define Open_SPI_MISO_PIN ...
Posted on June 01, 2013 at 17:05I have implemented the code of this linkhttp://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/PF252419 that allows sending and receiving a file from a flash drive via the usb stm .. but the problem is that an indi...
Posted on June 02, 2013 at 23:56Hi, Iam completely new and lost, i want to interface a bluetooth module, I have found some examples but i cannot receive any data on hyperterminal when i run these codes. Actually i need help to find out from where i ...
Posted on June 01, 2013 at 08:55hiI have a problem with jtag tck pin on my board.When I touch it with my finger the st-link Works properly & connect to stm32f417 but if i remove my finger from this pin the st-link not connect to my mcu.i pull-down...
Posted on May 31, 2013 at 16:15Hello, I need some help with creating fat files on microSD.I found some files on the demo builder but it only provied viewing directories.Many thanks.
Posted on May 30, 2013 at 17:00 The original post was too long to process during our migration. Please click on the attachment to read the original post.
Posted on May 27, 2013 at 05:31Application note AN3070 describes a procedure for releasing RS485 bus when using DMA to transfer USART data. The procedure uses two interrupts: * DMA transfer complete (DMA_TC) interrupt * USART transfer complete ...
