-Using gpio port to control the driver and testing program of serial port expansion chip.

1.6
...\args.c
...\args.h
...\at_test.c
...\gpio.c
...\gpio.o
...\GroundControl.ui.h
...\Makefile
...\mx1hw.h
...\optty1.c
...\send_com.c
...\serfile.c
...\serial.c
...\serial.c.bak
...\serial.h
...\sp2339.c
...\sub_to_main.c
...\test.c
...\type.h
...\vardef.h

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