Go serial port package

[Aaron Jacobs]

Following an idea from Ostsol in an [earlier post] [1], I've created a package
for easily reading from and writing to serial ports in Go. You can find it
here:

https://github.com/jacobsa/go-serial

Currently it only works on OS X, but that's mostly just because I don't have
any Linux hardware to test on. I think making it work on Linux would be a
matter of updating some constants (and am happy to take pull requests). Even
so, it might be useful to somebody as-is. Let me know if you have any
feedback.

Aaron

[1]: http://groups.google.com/group/golang-nuts/browse_thread/thread/f28f5fc4f69e16ef

[Tarmigan]

Nice!

I also made a serial port package here:
http://github.com/tarm/goserial

I think you and I arrived at about the same API! I some commits from
a couple months ago that add timeouts, parity, etc, but have not yet
needed those and so have not yet tested them and so have not yet
pushed them out to github.

The package I made uses cgo+termios.h instead of syscalls for OSX, and
it should also work on Linux, though I have not tested that either.
One thing you might think about since you're doing syscalls anyway is
using the IOSSIOSPEED ioctl which I think will let you set
non-standard baud rates on OSX.

One difference (for now) is my package also works on windows and you
can cross compile from OSX (or linux presumably) to windows, which can
be handy.

-Tarmigan

[calist...@gmail.com]

I am working on the Raspberry Pi

Do you have
1) any idea if linux sources can cross compiled on the Mac? c-go stuff cannot but I can't find any in your code
2) any demos for reading with it?

If you have even a simple reading demo - I can contribute a fuller version when I have finished...

[Dave Cheney]

Blatant plug, github.com/pkg/terminal. If you find some feature missing, tell me and I'll incorporate it.

[drago....@gmail.com]

You probably mean : github.com/pkg/term ?
Good package, but where is the timeout? Usually when reading from serial, timeout is needed.

[Dave Cheney]

Correct, it seems I don't know the name of my own package.

Timeout support would require integrating some kind of polling via select or similar.

[maranatha]

I have been trying to use both Tarmigan's and Jacob's packages on Windows and Linux. For basic serial reading they both seem to work just fine. However, they both seem to break with higher baud rate and continues streaming of data. In my case I was streaming sensor data at baud rate 921600, that comes every few seconds. The expected byte size vary a bit depending on the sensor readings from the physical environment, so I have now added one extra character ("#") to be able to return the read out when this character arrives. But this does not seem to be supported in any of the available libraries that I have seen so far. Any idea how I could meet my goal?

[arvinsa...@gmail.com]

Hello,

Can I ask for the  best Go package for AT commands to communicate with GSM modem. 

Arvin