变速尝试
........\Exe
........\...\PWM.hex
........\...\PWM.rom
........\Linker
........\......\PWM.a
........\......\PWM.o
........\List
........\....\PWM.asm
........\....\PWM.lst
........\Obj
........\...\PWM.cof
........\...\PWM.obj
........\...\PWM.str1
........\...\PWM.sym1
........\...\PWM.sym2
........\...\PWM.sym3
........\PWM.c
........\PWM.cci
........\PWM.cof
........\PWM.cwp
........\PWM.c~
........\PWM.fct
........\PWM.map
........\PWM.prj
........\PWM.txt