char PcdHalt(void)
{
char status;
u8 unLen;
u8 ucComMF522Buf[MAXRLEN];
ucComMF522Buf[0] = PICC_HALT;
ucComMF522Buf[1] = 0;
CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);
return MI_OK;
}
编译时出现..\lty\rc522\rc522.c(312): warning: #550-D: variable "status" was set but never used
是怎么回事？
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楼主
