是修改这里吗?
可是我修改了之后还是[root@EmbedSky /sbin]# ./serial_test
readserailcfg
serialread.dev is /dev/tq2440_serial
serialread.speed is 115200
serialread.databits is 8
serialread.stopbits is 1
serialread.parity is N
Can't Open Serial Port: No such file or directory
Can't Open Serial Port!