为什么我用eMios采集4hz的低频信号，采集结果是随机的，不是一个稳定的值，采集10hz没有问题

[Robin_Shen]

Hi zp001,

请问你将eMIOS设置成哪种模式？ 请问你参考的是哪个例程？
将eMIOS设置成Input Pulse Width Measurement (IPWM)或Input Period Measurement (IPM)通常都需要考虑: 输入信号的周期是否跨越了一个计数器周期。如果是这种情况可以考虑给计数器时钟分频来增加计数器周期。

Best Regards,
Robin
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[zp001]

我们使用的是SAIC，另外分频我们试过很多种，好像不起作用

[Robin_Shen]

请问你想要用eMIOS模块实现什么功能？ SAIC（Single Action Input Capture）是捕获单次的模式呀，如果你想要测量频率不应该用IPWM或者IPM更合适吗？

请查看一下这个例程S32K344_Example_Emios_Icu_IPWM_measurement_DS34_RTD_100_v2 是否满足你的需求。

What function do you want to achieve with eMIOS? SAIC (Single Action Input Capture) is a single capture mode. If you want to measure the frequency or duty of signals, shouldn't it be more appropriate to use IPM or IPWM? Please check if this example S32K344_Example_Emios_Icu_IPWM_measurement_DS34_RTD_100_v2 meets your needs.