Boot LED does not shine, press each time the button is pressed, the brightness increases once, until the brightest.

Filename	Size	Update
KEY_ PWM 按键调节	0	2018-01-16
KEY_ PWM 按键调节\PWM	25407	2018-01-16
KEY_ PWM 按键调节\PWM.M51	8196	2018-01-16
KEY_ PWM 按键调节\PWM.hex	2007	2018-01-16
KEY_ PWM 按键调节\PWM.lnp	39	2018-01-16
KEY_ PWM 按键调节\PWM.plg	1372	2018-01-16
KEY_ PWM 按键调节\PWM.uvgui.Administrator	139916	2018-01-16
KEY_ PWM 按键调节\PWM.uvgui_Administrator.bak	139916	2018-01-16
KEY_ PWM 按键调节\PWM.uvopt	7542	2018-01-16
KEY_ PWM 按键调节\PWM.uvproj	13763	2017-11-29
KEY_ PWM 按键调节\STARTUP.A51	6376	2013-06-24
KEY_ PWM 按键调节\STARTUP.LST	14050	2017-11-29
KEY_ PWM 按键调节\STARTUP.OBJ	749	2017-11-29
KEY_ PWM 按键调节\STC15Fxxxx.H	32812	2017-09-11
KEY_ PWM 按键调节\config.h	627	2017-11-29
KEY_ PWM 按键调节\main.LST	4980	2018-01-16
KEY_ PWM 按键调节\main.OBJ	25721	2018-01-16
KEY_ PWM 按键调节\main.c	1881	2018-01-16
KEY_ PWM 按键调节\switch-V01.PcbDoc	1379840	2017-12-11

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