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/*
* AVR emulator
* Python interface
*
* Copyright (C) 2007 Michael Buesch <mb@bu3sch.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <Python.h>
#include <errno.h>
#include "subprocess.h"
#include "util.h"
#define MODNAME "pyavr8emu"
static PyObject *pyavr_except;
static void * raise_errno_exception(int err)
{
int old_errno;
if (err < 0)
err = -err;
old_errno = errno;
errno = err;
PyErr_SetFromErrno(pyavr_except);
errno = old_errno;
return NULL;
}
/*****************************************************************************
* Instance-Object definitions *
*****************************************************************************/
struct avremu_instance {
PyObject_HEAD
/* The host part of the emulator instance. */
struct avremu_host_instance host;
};
static PyObject * method_instance_load_flash(PyObject *self, PyObject *args)
{
struct avremu_instance *in = (struct avremu_instance *)self;
struct avrmsg_to_device msg;
int err;
const char *image;
int image_size;
if (!PyArg_ParseTuple(args, "s#", &image, &image_size))
return NULL;
msg.msg = DEVMSG_LOADFLASH;
msg.size = image_size;
err = sendmsg_to_device(&in->host, &msg);
if (err)
return raise_errno_exception(err);
err = ipc_payload_send(&in->host.msg_to_device, image, image_size);
if (err)
return raise_errno_exception(err);
return Py_None;
}
static PyObject * method_instance_reset(PyObject *self, PyObject *args)
{
struct avremu_instance *in = (struct avremu_instance *)self;
int err;
err = sendnotify_to_device(&in->host, DEVMSG_RESET);
if (err)
return raise_errno_exception(err);
return Py_None;
}
static PyObject * method_instance_poll_status_msg(PyObject *self, PyObject *args)
{
struct avremu_instance *in = (struct avremu_instance *)self;
int err;
char buf[1024];
err = ipc_raw_line_poll(&in->host.status_from_device,
buf, sizeof(buf));
if (err == 0)
return Py_None;
if (err < 0)
return raise_errno_exception(err);
return PyString_FromString(buf);
}
static PyMethodDef avremu_instance_methods[] = {
{ "loadFlash", method_instance_load_flash, METH_VARARGS,
"Load a binary flash image" },
{ "reset", method_instance_reset, METH_NOARGS,
"Reset the emulated microcontroller" },
{ "pollStatusMsg", method_instance_poll_status_msg, METH_NOARGS,
"Poll a status message line" },
{ NULL, },
};
static PyObject * avremu_instance_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
struct avremu_instance *in;
in = (struct avremu_instance *)type->tp_alloc(type, 0);
if (!in)
return NULL;
return (PyObject *)in;
}
static int avremu_instance_init(PyObject *obj, PyObject *args, PyObject *kwds)
{
struct avremu_instance *in = (struct avremu_instance *)obj;
int err, arch;
static char *kwlist[] = {"arch", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &arch))
return -1;
err = avremu_instance_create(&in->host, arch);
if (err) {
raise_errno_exception(err);
return -1;
}
return 0;
}
static void avremu_instance_free(PyObject *obj)
{
struct avremu_instance *in = (struct avremu_instance *)obj;
avremu_instance_destroy(&in->host);
obj->ob_type->tp_free(obj);
}
static PyTypeObject avremu_instance_type = {
PyObject_HEAD_INIT(NULL)
.tp_name = MODNAME ".Instance",
.tp_basicsize = sizeof(struct avremu_instance),
.tp_methods = avremu_instance_methods,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_new = avremu_instance_new,
.tp_init = avremu_instance_init,
.tp_dealloc = avremu_instance_free,
.tp_doc = "An emulator instance object",
};
/*****************************************************************************
* Module API functions *
*****************************************************************************/
static PyMethodDef pyavr_methods[] = {
{ NULL, },
};
/*****************************************************************************
* Initialization *
*****************************************************************************/
#define def_const(m, x) PyModule_AddIntConstant((m), stringify(x), (x))
PyMODINIT_FUNC initpyavr8emu(void)
{
PyObject *m;
if (PyType_Ready(&avremu_instance_type) < 0)
return;
pyavr_except = PyErr_NewException(MODNAME ".AvrException",
PyExc_Exception, NULL);
if (!pyavr_except)
return;
Py_INCREF(pyavr_except);
m = Py_InitModule(MODNAME, pyavr_methods);
if (!m) {
Py_DECREF(pyavr_except);
return;
}
/* Define constants */
def_const(m, AVR_ATMEGA8);
def_const(m, AVR_ATMEGA168);
/* Build objects */
PyModule_AddObject(m, "AvrException", pyavr_except);
Py_INCREF(&avremu_instance_type);
PyModule_AddObject(m, "Instance", (PyObject *)&avremu_instance_type);
}
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