About kchuva

kchuva · 2013-01-16

Posted on January 17, 2013 at 06:09Hi all.I develop embedded software on STM32F103RC. And I having some problem with RTC Alarm. It triggers interrupt at end of second. Because of this I don't call some methods at the same second. I use LSE and presc...

kchuva · 2012-10-11

Posted on October 11, 2012 at 20:40Hello, I want to share my story about the use of the microprocessor and the problems arising from it. My system consists of a microprocessor ARM Cortex M3 STM32F103RC6 and various peripherals. I use this system to...

kchuva · 2013-01-17

Posted on January 17, 2013 at 14:01Close the subject. I solve my problem.Solution is very simple. I set alarm at time-1 and delay 1 ms in order to start my operation at begin of second boundary.

kchuva · 2013-01-16

Posted on January 17, 2013 at 08:35I find answer on my question. RTC Alarm has that behaviour because The RTC_Alarm and RTC Alarm flag (ALRF) are asserted on the last RTC Core clock cycle before the counter reaches the RTC Alarm value stored in the...

kchuva · 2012-10-13

Posted on October 13, 2012 at 09:21Thanks a lot for all who helps me.Last news: i think, my previous assumptions was not right, because I test my system without Bluetooth. I test UART in 485 mode with cable and results were good - no wasted bytes.No...

kchuva · 2012-10-12

Posted on October 12, 2012 at 11:28APB1, APB2 are also 24MHz. I don't write to flash, I work ony with RAM. Yes, my serial connection use CTS-RTS flow control, but how it can influence on data loss?I can't use DMA on USART1 because I use DMA on I2C w...

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RTC Alarm trigger at end of second

System Clock, Interrupts and USART data loss

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Re: System Clock, Interrupts and USART data loss

Re: System Clock, Interrupts and USART data loss