实时时钟芯片ds1302的应用

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1、实时时钟芯片DS1302的应用实时时钟芯片DS1302的应用--------------------------------------------------------------------------------实时时钟芯片DS1302源程序(电路图见附录)作者：廖文丹　　南昌理工学院电子信息科学系本程序已通过keil测试成功。只要小改一下定时，各开关引脚就能用了、、、、、、。LED3CLKBITP1.5LED4IOBITP1.6RSTBITP1.7SECONDEQU60HKEY_SETEQUP1.1KEY_UPEQUP1.2ORG0000HLJMPSTA

2、RTORG000BHLJMPINTT0ORG0030HSTART:MOV20H,#0MOVR2,#25MOVTMOD,#01HMOVTH0,#0E5HMOVTL0,#0F8HSETBET0SETBTR0SETBEASTART1:LCALLDISPLAYLCALLEXCHANGJNBP1.4,RESETJNBKEY_SET,SETHHSJMPSTART1RESET:LCALLSET_1302SJMPSTART1SETHH:LCALLDELAY_2MSJBKEY_SET,START1LCALLKEYSETBEALJMPSTART1KEY:CLREASETB05HKEY

3、_IN:JNB05H,DSP_SET_MDSP_SET_H:MOVR3,#100XX2:LCALLDISPLAYDJNZR3,XX2AJMPKEY_SELECTDSP_SET_M:MOVR3,#100XX3:LCALLDISPLAYDJNZR3,XX3AJMPKEY_SELECTKEY_SELECT:JNBKEY_SET,K_SETJNBKEY_UP,K_UPAJMPKEY_SELECTK_SET:LCALLDELAY_2MSLCALLDELAY_2MSLCALLDELAY_2MSLCALLDELAY_2MSJBKEY_SET,KEY_SELECTMOVR5,#2

4、50KSET_LOOP:JBKEY_SET,KEY_CPLLCALLDELAY_2MSLCALLDELAY_2MSDJNZR5,KSET_LOOPJNBKEY_SET,$AJMPEXT_KEYKEY_CPL:CPL05HLJMPKEY_INRETK_UP:LCALLDELAY_2MSLCALLDELAY_2MSJBKEY_UP,KEY_SELECTJNB05H,K_UP_LOWK_UP_HIGH:JNBKEY_UP,$MOVA,61HADDA,#1HDAAMOV61H,ACJNEA,#60H,XX5XX5:JCK_UP_DOWN_ENDCLRAMOV61H,ALJ

5、MPK_UP_DOWN_ENDK_UP_LOW:JNBKEY_UP,$MOVA,62HADDA,#1HDAAMOV62H,ACJNEA,#13H,XX6XX6:JCK_UP_DOWN_ENDCLRAINCAMOV62H,ALJMPK_UP_DOWN_ENDK_UP_DOWN_END:MOVA,61HMOVB,#10HDIVABMOV71H,AMOV70H,BMOVA,62HMOVB,#10HDIVABMOV73H,AMOV72H,BLJMPKEY_INEXT_KEY:MOVR1,#84HMOVA,62HADDA,#80HMOV62H,AMOVR0,62HLCALL

6、SETONEMOVR1,#82HMOVR0,61HLCALLSETONERET;-------------------------INTT0-------------------------INTT0:PUSHACCPUSHPSWMOVTH0,#0E5HMOVTL0,#0F8HDJNZR2,OUTT0MOVR2,#25CPL00HLCALLR_1302OUTT0:POPPSWPOPACCRETI;-------------------DISPLAY-----------------------DISPLAY:MOVDPTR,#TABMOVA,70HMOVCA,@A

7、+DPTRMOVSBUF,AJNBTI,$CLRTISETBP3.3LCALLDL1MSCLRP3.3MOVA,71HMOVCA,@A+DPTRMOVSBUF,AJNBTI,$CLRTISETBP3.7LCALLDL1MSCLRP3.7MOVA,72HMOVCA,@A+DPTRMOVSBUF,AJNBTI,$CLRTISETBP3.5LCALLDL1MSCLRP3.5MOVA,73HMOVCA,@A+DPTRMOVSBUF,AJNBTI,$CLRTISETBP3.4LCALLDL1MSCLRP3.4CLRP1.0CLRP1.3JB20H.0,XX1MOVA,#0A

8、HMOVC