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Fredrik Lundh |
at Dec 14, 1999 at 11:38 am
|
⇧ | 
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Cesar Lopez wrote:
I need to make a library for python to update some external devices in
an embeded system with a little Hitachi microcontroller, so I need
information about How to do that, I must to define a method to define
librarys to control devices like, RS-232 port, Leds, Keyboards,
Speakers.
Now I?ve defined a litle program in C++, its control a green Led
(on/off) and now I want to do that with the python interpreter, so I
need your help.
here's an example (in plain old C):
---
#include "Python.h"
static PyObject *
device_set(PyObject* self, PyObject* args)
{
int status;
int value;
if (!PyArg_ParseTuple(args, "i", &value))
return NULL;
/* do something! */
status = whatever(value);
return Py_BuildValue("i", status);
}
static PyMethodDef _functions[] = {
{"set", device_set, 1},
{NULL, NULL}
};
void
#ifdef WIN32
__declspec(dllexport)
#endif
initdevice()
{
Py_InitModule("device", _functions);
}
---
import device
device.set(1) # switch it on!
---
for more info, see:
"Extending and Embedding the Python Interpreter"
http://www.python.org/doc/current/ext/ext.html"Python/C API Reference Manual"
http://www.python.org/doc/current/api/api.htmland all the existing modules in the standard
library...
</F>
