SPWM
....\SPWM(TA定时产生高低电平）
....\.........................\Backup of MIAN.ewd
....\.........................\Backup of MIAN.ewp
....\.........................\Debug
....\.........................\.....\Exe
....\.........................\.....\...\MIAN.d43
....\.........................\.....\List
....\.........................\.....\Obj
....\.........................\.....\...\EW424C.r43
....\.........................\.....\...\EW424E.r43
....\.........................\.....\...\EW4250.r43
....\.........................\.....\...\EW4252.r43
....\.........................\.....\...\EW4254.r43
....\.........................\.....\...\EW4256.r43
....\.........................\.....\...\EW4258.r43
....\.........................\.....\...\EW425A.r43
....\.........................\.....\...\MIAN.pbd
....\.........................\.....\...\SHUZHI.r43
....\.........................\.....\...\lcd.r43
....\.........................\.....\...\lcdcaidan.r43
....\.........................\.....\...\main.r43
....\.........................\GB2312.h
....\.........................\MAIN.eww
....\.........................\MIAN.dep
....\.........................\MIAN.ewd
....\.........................\MIAN.ewp
....\.........................\SHUZHI.c
....\.........................\SHUZHI.h
....\.........................\ascii.h
....\.........................\init_lcd.h
....\.........................\lcd.c
....\.........................\lcd.h
....\.........................\lcdcaidan.c
....\.........................\lcdcaidan.h
....\.........................\mabiao.h
....\.........................\main.c
....\.........................\math.h
....\.........................\mmp.h
....\.........................\qqp.h
....\.........................\settings
....\.........................\........\MAIN.wsdt
....\.........................\........\MIAN.cspy.bat
....\.........................\........\MIAN.dbgdt
....\.........................\........\MIAN.dni
....\SPWM定时器产生占空比可变的PWM，公式算出定时时间
....\...............................................\Backup (2) of MIAN.ewd
....\...............................................\Backup (2) of MIAN.ewp
....\...............................................\Backup of MIAN.ewd
....\...............................................\Backup of MIAN.ewp
....\...............................................\Debug
....\...............................................\.....\Exe
....\...............................................\.....\...\MIAN.d43
....\...............................................\.....\List
....\...............................................\.....\Obj
....\...............................................\.....\...\EW64.r43
....\...............................................\.....\...\EW66.r43
....\...............................................\.....\...\EW68.r43
....\...............................................\.....\...\EW6A.r43
....\...............................................\.....\...\MIAN.pbd
....\...............................................\.....\...\SHUZHI.r43
....\...............................................\.....\...\lcd.r43
....\...............................................\.....\...\lcdcaidan.r43
....\...............................................\.....\...\main.r43
....\...............................................\GB2312.h
....\...............................................\MAIN.eww
....\...............................................\MIAN.dep
....\...............................................\MIAN.ewd
....\...............................................\MIAN.ewp
....\...............................................\SHUZHI.c
....\...............................................\SHUZHI.h
....\...............................................\ascii.h
....\...............................................\init_lcd.h
....\...............................................\lcd.c
....\...............................................\lcd.h
....\...............................................\lcdcaidan.c
....\...............................................\lcd