Input Capture - Microchip Taiwan
Input Capture - Microchip Taiwan
Input Capture - Microchip Taiwan
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使 用 Edge Detection Mode<br />
來 計 算 <strong>Input</strong> Frequency<br />
• ICM = 011, 設 定 為 每 個 rising edge 都 發 生<br />
<strong>Capture</strong> 事 件<br />
• ICI = 01, 設 定 為 每 兩 次 capture 事 件 後 中 斷 CPU<br />
• <strong>Input</strong> Freq. = 1 / [(n16 – n3 ) * TMRx input cycle]<br />
TMRx<br />
n2<br />
n3<br />
n4<br />
n5<br />
n6 n7<br />
n8<br />
n9 n10<br />
n11<br />
n12<br />
n13<br />
n14<br />
n15<br />
n16<br />
n17<br />
n18<br />
n19<br />
n20 n21<br />
n22<br />
ICx pin<br />
ICxBUF<br />
FIFO 0<br />
?? n3 n16<br />
FIFO1<br />
QEIIF<br />
ICxIF cleared by Software<br />
dsPIC Peripheral Module Training – RTC <strong>Taiwan</strong><br />
SLIDE 11
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