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Re: 用RB5~RB12的位,该怎样做?
#2
版主
版主


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1. 先從 PORTB Latch 裡資料讀回送到一個 unsigned int ABC.
2. ABC 去 AND 0b1110 0000 0001 1111 將部分位元清為 0

3. 將送進來的 Unsigned char 轉成 unsigned int 的型態後向左移 5 bits 後再 AND 0b 0001 1111 1110 0000

4. 將此兩變數做 OR 運算後,將結果寫回 PORTB

發表於: 2008/4/2 9:44
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用RB5~RB12的位,该怎样做?
#1
新會員
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版主:你好!

请教问题:如果要用到RB5~RB12的话,刚好是8位,要用他做数据输出和输入IO,如果不影响其他的位的话,该怎样做?(芯片:24FJ32GA002)
谢!!

發表於: 2008/4/1 1:03
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