On 5/29/2013 4:00 PM, William Ray Wing wrote:
On May 29, 2013, at 2:23 PM, Ma Xiaojun <damage3...@gmail.com> wrote:
Hi, all.
pySerial is probably "the solution" for serial port programming.
Physical serial port is dead on PC but USB-to-Serial give it a second
life. Serial port stuff won't interest end users at all. But it is
still used in the EE world and so on. Arduino uses it to upload
programs. Sensors may use serial port to communicate with PC. GSM
Modem also uses serial port to communicate with PC.
Unforunately, pySerial project doesn't seem to have a good state. I
find pySerial + Python 3.3 broken on my machine (Python 2.7 is OK) .
There are unanswered outstanding bugs, PyPI page has 2.6 while SF
homepage still gives 2.5.
Any idea?
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Let me add another vote/request for pySerial support. I've been using it with
python 2.7 on OS-X, unaware that there wasn't a path forward to python 3.x. If
an external sensor absolutely positively has to be readable, then RS-232 is the
only way to go. USB interfaces can and do lock up if recovery from a power
failure puts power on the external side before the computer has finished
initializing the CPU side. RS-232, bless its primitive heart, could care less.
Then 'someone' should ask the author his intentions and offer to help or
take over.
I did some RS-232 interfacing in the 1980s, and once past the fiddly
start/stop/parity bit, baud rate, and wiring issues, I had a program run
connected to multiple machines for years with no more interface problems.
Terry
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