About koenvv

koenvv · 2015-11-11

Posted on November 12, 2015 at 02:36Hi,I'm using an STM32L051R8 clocked off HSI 16Mhz and with a 32.768KHz external crystal (LSE) that drives the RTC and an LPTIMER.I have set the RTC to generate periodic wakeup interrupts every X seconds, just befo...

koenvv · 2015-11-12

Posted on November 12, 2015 at 12:58OK I found a small bug in my code; when loading the RTC->WUTR register you have to subtract one period. (1 second in my case)So now I have it set to 5 seconds (RTC->WUTR = 4); I sleep for 4990ms; which means my co...

koenvv · 2015-11-11

Posted on November 12, 2015 at 04:04Hi Clive,Subsecond counts are not always similar before and after the STOP mode; 1 sec RTC wakeup subsecond registers:0xFF before and aft the first time; LPtimer reported 994 ms (1018 ticks)0xFE the second time; L...

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STM32L0 RTC wakeup time offset (in STOP mode)

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Re: STM32L0 RTC wakeup time offset (in STOP mode)