我建议他们之间需要一根电线。很遗憾，你使用DC，或者你可以同步到电源频率。我假设你正在使用HFIFOTSC。这可以通过OSCTUNK寄存器稍微调整，但它仍然会随温度和电源电压变化。精度只有1%左右，如果你想要更好的精度，你需要一个外部晶体。
以上来自于百度翻译
以下为原文
What I suggested would require a wire between them.
It's a pity you're using DC, or you could have synched to the supply frequency.
I assume you are using the HFINTOSC. That can be slightly adjusted via the OSCTUNE register, but it will still vary a little with temperature and supply voltage. It's only accurate to about 1%.
You need an external crystal if you want better precision.
我建议他们之间需要一根电线。很遗憾，你使用DC，或者你可以同步到电源频率。我假设你正在使用HFIFOTSC。这可以通过OSCTUNK寄存器稍微调整，但它仍然会随温度和电源电压变化。精度只有1%左右，如果你想要更好的精度，你需要一个外部晶体。
以上来自于百度翻译
以下为原文
What I suggested would require a wire between them.
It's a pity you're using DC, or you could have synched to the supply frequency.
I assume you are using the HFINTOSC. That can be slightly adjusted via the OSCTUNE register, but it will still vary a little with temperature and supply voltage. It's only accurate to about 1%.
You need an external crystal if you want better precision.
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