修改串口数组个数bug，增加报警距离功能

zhyinch

2019-11-07 79d5d6bcc3bc634ea2f977c0ecb1f1356554d4b0

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*.txt
*.crf
*.d
*.o
*.ini
*.dbgconf
*.lst
*.map
*.iex
*.dep
*.axf
*.htm
*.lnp
*.sct
*.hex