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Posted on October 15, 2013 at 14:44Hello,we want to build a system with some STM32F407s. For error memory, it is important that all controllers have the same time. I would like to use the RTC and the RTC_REFIN input to synchronize the RTCs.The RTC w...
Posted on October 15, 2013 at 12:06Hi I think it is not a problem of Win7. I have the same problem here. I Generate a DFU file with the DFU file manager. Programming with DfuSe Demo works without problems. But when comparing the program crashes. Whe...
Posted on October 14, 2013 at 15:49I'm new to STM32 so please help :) Is that possible to trigger SPI+DMA transfer from GPIO? I have RM0038 document and on ''DMA1 request mapping'' (page 213) diagram there are no GPIO pins. I assume that SPIx_RX and...
Posted on October 08, 2013 at 13:49Hello,I work with a STm32F417 FreeRTOS + lwip 1.4.0 + 7.1.1.I get crash HardFault_Handler. Sometimes after a few minutes, sometimes after a few hours.There is a screenshot in attachment.I can see that it comes from...
Posted on October 12, 2013 at 22:03Hello,I am trying to apply CRC to an 8-bit array for creating checksum in order to use in transfer. Since CRC of STM32F4 uses registers as 32-bit, I need to do something tricky.For instance, a 8-bit buffer with 42 ...
Posted on October 11, 2013 at 16:46For example i want to use TIM9_CC2 event trigger. I don't understand when does this event happens & triggers the ADC to start sampling. I thought one controls it with TIM9->CCR2 value, but thought wrong - unless i...
Posted on October 14, 2013 at 16:38Hi all,in the http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/DM00043574.pdf at page 369 is reported, about the timer functional description, the next sentence ''refer also...
Posted on October 14, 2013 at 10:35I have a question I'm hoping someone might be able to answer for me: I have a STM32F4 Discovery board which has USB OTG FS and USB OTG HS. All I want to do is connect up a simple USB A connector for reading a memor...
Posted on October 14, 2013 at 08:32 Hello, I want to sample 3 channels on ADC1 and 2 channels on ADC3. Does i have the ADCs to use in dual or tripple mode? The following Code does not work :( /* Sample Temp, VRef, VBat...
Posted on October 14, 2013 at 12:47Hi, I am trying to drive a servo motor(for this case, TowerPro MG90S), so I want to get 50 hz frequency and duty cycle between %5 and %10. My board is STM32F407 Discovery. I tried to change Peripheral Lib example a...
