bash 从串口读取并以十六进制存储
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Read from serial port and store in hexadecimal
提问by Latifa
I have a vhf radio which sent a status message continuosly through the serial port, and I need the messages that I got to be stored as hex data in a text file
我有一个 vhf 无线电，它通过串行端口连续发送状态消息，我需要将消息作为十六进制数据存储在文本文件中
I tried hexdump command as shown below, and the data that I've got from vhf radio is correct, but the problem with this script that when I execute it, it does not end until I press ctrl-c
我尝试了如下所示的 hexdump 命令，我从 vhf radio 获得的数据是正确的，但是这个脚本的问题是，当我执行它时，它直到我按下 ctrl-c 才结束
d -A n -t x1 -w128 /dev/ttyS0 > file.txt
so I've tried another command which is read command as follow:
所以我尝试了另一个命令，它是读取命令，如下所示：
COUNTER=0
while [ $COUNTER -lt 10 ]; do
read -r -t1 -N128 DATA < /dev/ttyS0
echo $DATA >> file1.txt
od -A n -t x1 -w128 file1.txt >> file2.txt
let COUNTER=COUNTER+1
done
but the data stored in file2.txt is not correct.
但是file2.txt中存储的数据不正确。
the message that I got from the radio is not in a format that I could interprete it as per the radio prtocol document. so when I said that the data is not correct I mean that the message is could not be interpreted (it received randomly)
我从收音机收到的消息的格式不是我可以按照收音机协议文档来解释的。所以当我说数据不正确时，我的意思是无法解释消息（它是随机接收的）
note that I've setted the serial port before executing both scripts as follow:
请注意，我在执行两个脚本之前设置了串行端口，如下所示：
stty -g /dev/ttyS0 raw
stty -F /dev/ttyS0 9600
so, please help me to figure this out. or gave me aother way to read from serial port.
所以，请帮我解决这个问题。或者给了我另一种从串口读取的方法。
Regards,
问候，
回答by Latifa
The Problem is solved :)
问题已经解决了 ：）
I tried to use hexdump command by setting -N to KB and it works successfuly
我尝试通过将 -N 设置为 KB 来使用 hexdump 命令并且它成功运行
it reads from serial port until 1000 bytes and it stops
它从串行端口读取直到 1000 字节，然后停止
od -A n -N KB -t x1 -w128 /dev/ttyS0 > /tmp/filename.txt
so, thank you guys for your cooperation. I really appriciated.
所以，谢谢你们的合作。我真的很感激。
