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查STM32 Reference manual,Temperature sensor/VREFINT internal channelsThe Temperature sensor is connected to channel ADCx_IN16 and the internal reference voltage VREFINT is connected to ADCx_IN17. These two internal channels can be selected and converted as injected or regular channels.这个Vrefint 可以用来做这个事
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发表于 2009-7-13 13:27
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先前不说清楚,要是只需判断掉电问题,这个问题好办
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我在2楼已经说了:没有好办法测出备份电池电压
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STM32有内部的参考电压
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