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PIC16F877的AD轉換問題
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新會員
 
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請問我使用PIC BASIC 的程式語法寫AD轉換的程式，剛開始我樣本取樣頻率是 2 Hz，所以我使用檢查GO/DONE位元是否已經清除的方法跑回圈其程式如下:
if PORTB.1=1 and PORTB.2=1 then '傳值 ADCIN 4, adval4 gosub notdone endif notdone: Pause 500 If ADCON0.2 = 1 Then gosub notdone return 可是現在我需要取樣到250Hz，我把Pause 改成 Pause 4 ，不過取樣頻率卻沒我想像的到250Hz，最多140Hz。 我也想用中斷的方式，不過我還學不會，各位好心的大哥們，可以教我嗎?
發表於: 2005/10/7 18:40
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