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Re: C18之struct與Rrcf()!
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版主
 
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Rfcf( ) 這類的 Macro 組語只能直接使用於一般的 Global unsigned char variable，所以擬轉 array 只能用 C 的方式去移轉資料，不能用這種 In-Line Assembly 的方式。
發表於: 2008/8/7 9:42
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C18之struct與Rrcf()!
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資深會員
 
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大家好:
union { long dword; char byte[4]; }x; #define temp_data x.dword #define temp_b3 x.byte[3] #define temp_b2 x.byte[2] #define temp_b1 x.byte[1] #define temp_b0 x.byte[0] uns8 data1; void main(void) { ... Rrcf(temp_b3,1,1); //這行Error ... Rrcf(data1,1,1); //這行OK ... } Error [1253] constant operand expected 為何用array不行? 煩請各位先進幫忙解說. Thanks.
發表於: 2008/8/7 8:33
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