update led and gpio program

guowenxue

2021-11-03 220397d6e51dd15d74fbd41cfdc9c72aced45119

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BIN_FILES=tcp_server udp_server
 
all: clean ${BIN_FILES}
 
tcp_server:
    gcc $@.c  -o $@
    
udp_server:
    gcc $@.c  -o $@
 
clean:
    @rm -f ${BIN_FILES}