About juntakei

juntakei · 2024-10-03

Hello everyone, I'm Jun and I live in Japan.The board is a custom board based on BLACK_F407VE, and is for hobby engine control. The crystal oscillator is ABS07-LR-32.768kHz-6 (load capacitance 6pF) recommended by STM.The development environment is Vi...

juntakei · 2024-10-04

Thank you for your reply.I think there is a problem with the clock source after all.Thank you.

juntakei · 2024-10-04

Thank you for your reply.>Only LSE can run via VBATI understand this. >LSI won't and has a different frequency and prescalers / dividers. A mismatch of those will result in divergence of time.What does this mean?Does this mean that the RTC clock uses...

juntakei · 2024-10-04

I turned the power off for an hour of testing and nothing happened.

juntakei · 2024-10-04

I think I can check every 10 minutes.If I find out anything, I'll ask again.Thank you.

juntakei · 2024-10-03

Thank you for your reply.The following is written in the setup function for the clock source, so I think it is set to LSE.if (rtc.isTimeSet()) { rtc.setClockSource(STM32RTC::LSE_CLOCK); //Initialise external clock for RTC if clock is set. That is t...

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About the drift of the RTC of STM32F407VET6

Re: About the drift of the RTC of STM32F407VET6

Re: About the drift of the RTC of STM32F407VET6

Re: About the drift of the RTC of STM32F407VET6

Re: About the drift of the RTC of STM32F407VET6

Re: About the drift of the RTC of STM32F407VET6