pic单片机应用开发典型模块_第四章程序

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1、（1）多功能波形信号发生模块程序应用#INCLUDERTCCEQU01HPCEQU02HPCLATHEQU0AHTEMP0TIMEEQU20H;方波次数TEMP0CONSTEQU21H;方波常数TEMO0DOTEQU22H;方波点数TEMP0OUTEQU23H;方波输出值TEMP1TIMEEQU30H;锯齿波次数TEMP1CONSTEQU31H;锯齿波常数TEMP1DOTEQU32H;锯齿波点数TEMP1OUTEQU33H;锯齿波输出值TEMP2TIMEEQU40H;三角波次数TEMP2CONSTEQU41H;三角波常数TEMP2DOTEQU42H;三角波点数T

2、EMP2OUTEQU43H;三角波输出值OPTION_REQU81HWBUEQU2FH;W暂存SBUEQU2EH;STATUS暂存RCCEQU0FAH;最大频率常数;------------------------------------------------------------------------------------------------------ORG0SYS_RESETGOTOSTART;-----------------------------------------------------------------------------------------

3、-------------ORG4;中断程序MOVWFWBUSWAPFWB0,0SWAPFSTATUS,0MOVWFSBUCALLSERV_INTSWAPFSBU,0MOVWFSTATUSSWAPFWBU,0RETFIE;------------------------------------------------------------------------------------------------------ORG40HNOPSTARTCALLINTCALLINTPORTCALLINTTMOLOOP;延时NOPNOPGOTOLOOP;--------------------

4、----------------------------------------------------------------------------------INTCLRFTEMP0DOTCLRFTEMP1DOTCLRFTEMP2DOTCLRFTEMP0OUTCLRFTEMP1OUTCLRFTEMP2OUTMOVLW03HMOVWFTEMP0TIMEMOVWFTEMP0CONSTMOVWFTEMP2TIMEMOVWFTEMP2CONSTMOVLW06HMOVWFTEMP1TIMEMOVWFTEMP1CONSTRETURN;------------------------------

5、------------------------------------------------------------------------INTPORT;端口初始化BCFSTATUS,0BCFSTATUS,1BCFSTATUS,5CLRFPORTCCLRFPORTDBSFPORTE,1BSFSTATUS,5MOVLW00HMOVWFTRISDMOVLWOF4HMOVWFTRISC;定义RE1为输出，其他为输入MOVWFTRISEBCFSTATUS,5RETURN;------------------------------------------------------------

6、------------------------------------------INTTM0;定时器初始化BSFSTATUS,5MOVLW80HMOVWFOPTION_RBCFSTATUS,5MOVLW0A0H;开放定时器中断MOVLWRCC;RCC=最大频率延时常数MOVWFRTCCRETURN；;------------------------------------------------------------------------------------------------------SERY_INT;中断服务程序BTFSCINTCON，2GOTOSERVRTCCCL

7、RFINTCONBSFINTCON,5RETURNSERVRTCCMOVLWRCCMOVWFRTCCBCFINTCON，2CALLOUTPUTRETFIE;------------------------------------------------------------------------------------------------------OUTPUT;输出波形BCFSTATUS,5FBODECFSZTEMP0TI