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为什么是FFF不是FFF呢?手册里面低4位不要啊
Bit Symbol Description Reset
3:0 - Reserved. N/A
15:4 RESULT This field contains the 12-bit ADC conversion result from the last conversion performed on thischannel. This will be a binary fraction representing the voltage on the AD0[n] pin, as it falls within
the range of VREFP to VREFN. Zero in the field indicates that the voltage on the input pin was less
than, equal to, or close to that on VREFN, while 0xFF
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发表于 2016-12-22 00:32
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