Dec 30, 2019
01:38 AM
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Dec 30, 2019
01:38 AM
①请问20737如果连接了外部32.768k晶振,32.768k晶振是何时开始起振,上电就应该起振还是需要通过后续配置(上电是不是默认开启内部集成的LPO)?
②外部26M晶振是不是上电就默认起振?
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Jan 01, 2020
04:30 PM
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Jan 01, 2020
04:30 PM
1. 接了外部晶振之后,需要在application中进行配置,请参考rtc_sample的demo:
rtcConfig.oscillatorFrequencykHz = RTC_REF_CLOCK_SRC_32KHZ;
2. 外部用的是24M晶振,上电默认起振。
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Jan 01, 2020
04:30 PM
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Jan 01, 2020
04:30 PM
1. 接了外部晶振之后,需要在application中进行配置,请参考rtc_sample的demo:
rtcConfig.oscillatorFrequencykHz = RTC_REF_CLOCK_SRC_32KHZ;
2. 外部用的是24M晶振,上电默认起振。
Jan 01, 2020
11:34 PM
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Jan 01, 2020
11:34 PM
好的,非常感谢!