sd2003芯片资料及源码,C51下的,可以直接使用,不是厂方提供的测试程序, 相应子程序: extern void ini_SD2003(void) extern bit mend_scl_SD2003(void) extern bit start_bit_SD2003(void) extern void stop_bit_SD2003(void) extern void ack_SD2003(void) extern void no_ack_SD2003(void) extern void mast_ack_SD2003(void) extern void write_8bit_SD2003(UCHAR ch) extern UCHAR Read_8bit_SD2003(void) extern void write_8bit_SD2003_R(UCHAR ch) extern UCHAR Read_8bit_SD2003_R(void) extern bit Readblock_SD2003(UCHAR ucommand,UCHAR *p) extern bit Writeblock_SD2003(UCHAR ucommand,UCHAR *p)