此程序用的是PBASIC语言，单片机晶振50.000M '=================================================== ReadRTCBurst: HIGHEn PAUSE 5 'read minutes adr=$83'写入MINUTE的地址16进制83，读取数据 GOSUB uc_r1302 Minutes=temp DEBUG "minute:",DEC Minutes,CR 'read hours adr=$85 GOSUB uc_r1302 Hours=temp DEBUG "Hour:",DEC hours,CR 'read day adr=$87 GOSUB uc_r1302 day=temp DEBUG "day:",DEC day,CR 'read month adr=$89 GOSUB uc_r1302 month=temp DEBUG "month:",DEC month,CR 'read year adr=$8d GOSUB uc_r1302 year=temp DEBUG "year:",DEC month,CR LOW En RETURN '========================================== '写入1字节命令、地址，输入变量TEMP '========================================== v_RTinputbyte: temp2=temp FOR idx2=1 TO 8 temp2=temp2&selbit1'SELBIT1=00000001 IF temp2=1 THEN bit_1 LOW dta'DTA为DS1302的I/O PAUSE 1'PAUSE 1 延时 GOTO disp bit_1: HIGH dta PAUSE 1 disp: HIGH clk PAUSE 1 LOW clk temp2=temp temp2=temp2 >> idx2'向右移IDX2位 NEXT RETURN '========================================== '读取1字节，输出TEMP '========================================== uc_rtoutputbyte: temp=0 HIGH rtcreset PAUSE 1 FOR idx2=1 TO 8 temp=temp >>1 IO=dta IF IO=1 THEN H_temp temp=temp|selbit2'SELBIT2=00000000 GOTO clk_1 H_temp: temp=temp|selbit3'SELBIT2=10000000 clk_1: HIGH clk PAUSE 5 LOW clk PAUSE 5 NEXT 'DIR15=1 RETURN '========================================== '写入地址ADR，然后写入命令、数据DDA '========================================== v_w1302: LOW RTCReset LOW clk dly=1 dly=1 HIGH rtcreset'RTCRESET为DS1302的RESET temp=adr GOSUB v_rtinputbyte'调用写1字节子程序 temp=dda GOSUB v_rtinputbyte HIGH clk LOW rtcreset RETURN '========================================== '写入地址ADR,然后读取数据TEMP '========================================== uc_r1302: LOW rtcreset PAUSE 1 LOW clk PAUSE 1 HIGH rtcreset PAUSE 1 temp=adr GOSUB v_rtinputbyte GOSUB uc_rtoutputbyte HIGH clk LOW rtcreset RETURN
作者：juckey 2006-7-27 19:24:00 |
