C8051F340~闪烁一个发光二极管，为什么写进去之后不闪烁呢

2011-6-4 11:05:15 3113

0 本帖最后由朝夕于 2011-6-4 15:13 编辑 #include #define unit unsigned int *it LED =P2^0; void Delay(unit a); void PORT_Init(void); void mian(void) { while(1) { LED=~LED; Delay(40000); } } void Delay(unit a) { unsigned int i; while(--a!=0) { for(i=0;i<600;i++); } } void PORT_Init(void) { P2MDIN=0x01; P2MDOUT=0x01; P2 \|=0x01; } 错误信息如下： Build target 'Target 1' linking... * WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS SEGMENT: ?PR?MIAN?604 * WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS SEGMENT: ?PR?PORT_INIT?604 * WARNING L1: UNRESOLVED EXTERNAL SYMBOL SYMBOL: MAIN MODULE: C:KEILC51LIBC51S.LIB (?C_INIT) *** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: MAIN MODULE: C:KEILC51LIBC51S.LIB (?C_INIT) ADDRESS: 0010H Program Size: data=9.0 xdata=0 code=194 creating hex file from "p604"... "p604" - 0 Error(s), 4 Warning(s). 0
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