Is there an easy way to increase my receive serial buffer in linux? It looks like it's currently set at 4096 bytes. I'm using pyserial + python and would like to read larger chunks than this at one time.
Thanks for any help,
-es
linux serial buffer question
Nov 30, 2004
3 Replies
You'd have to rebuild the kernel after modifying the sources to the tty line discipline module.
Right. The last time I looked it's set to one page. On IA32 that's 4K.
Why not wrap the read() method in three lines of python to keep calling read() until you get the desired amount of data? Just subclass the serial port object, override the read() method with a loop that calls the super's read.
Grant Edwards grante Yow! I'd like some JUNK
at FOOD... and then I want to
visi.com be ALONE --
I don't know, 3 lines sounds like an awful lot *grin*.
Ok, I'll work with what I've got. Thanks!
Grant Edwards wrote:
[...]
There is one case where my suggestion isn't a substitute for larger buffers. If the data is being sent when your application ready for it (it isn't calling read()), you would need larger buffers to prevent data loss or flow-control kicking in.
Grant Edwards grante Yow! This is a NO-FRILLS
at flight -- hold th' CANADIAN
visi.com BACON!!
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