在linux中使用jSSC的串口

I'm trying to work with serial port in java with jSSC. My code:

我正在尝试使用jSSC在java中使用串口。我的代码：

import jssc.SerialPortList;
....
String[] ports = SerialPortList.getPortNames();

but it always return empty array.

但它总是返回空数组。

brut@brut-Z97-D3H:~$ dmesg | grep tty
[    0.000000] console [tty0] enabled
[    0.957537] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A

Can anyone help me?

谁能帮我？

1 个解决方案

#1

I've faced the same issue recently, here's what I've managed to find out.

我最近遇到了同样的问题，这是我设法找到的。

The first thing you should check is whether you have enough rights to access tty* interface.

您应该检查的第一件事是您是否有足够的权限访问tty *接口。

Firstly, make sure your user is in dialout group. If not, execute

首先，确保您的用户处于拨出组。如果没有，请执行

sudo adduser phil dialout

and then give yourself rights to read-write to the exact port.

然后给自己读写确切端口的权限。

sudo chmod 666 /dev/ttyS0

After that SerialPortList.getPortNames() should return ttyS0

之后，SerialPortList.getPortNames（）应该返回ttyS0

#1