summaryrefslogtreecommitdiff
path: root/2004/i
diff options
context:
space:
mode:
authorschodet2004-02-29 18:30:44 +0000
committerschodet2004-02-29 18:30:44 +0000
commit7bc30212c13eff66bc217046f8bd69f4a78bec71 (patch)
treee499bf8eae949469e31d38637a37f3b7c0465a8c /2004/i
parent050c837d32b445c60e28ca57d15c879b0f47b19c (diff)
Add: FakeSerial.
Diffstat (limited to '2004/i')
-rw-r--r--2004/i/nono/src/fake_serial/Makefile.defs8
-rw-r--r--2004/i/nono/src/fake_serial/fake_serial.cc109
-rw-r--r--2004/i/nono/src/fake_serial/fake_serial.h56
-rw-r--r--2004/i/nono/src/fake_serial/test_fake_serial.cc37
4 files changed, 210 insertions, 0 deletions
diff --git a/2004/i/nono/src/fake_serial/Makefile.defs b/2004/i/nono/src/fake_serial/Makefile.defs
new file mode 100644
index 0000000..a335e0f
--- /dev/null
+++ b/2004/i/nono/src/fake_serial/Makefile.defs
@@ -0,0 +1,8 @@
+LIBS += fake_serial.a
+TARGETS += test_fake_serial
+test_fake_serial_SOURCES = test_fake_serial.cc fake_serial.a utils.a
+fake_serial_a_SOURCES = fake_serial.cc
+
+fake_serial.a: ${fake_serial_a_SOURCES:%.cc=fake_serial.a(%.o)}
+
+test_fake_serial: $(test_fake_serial_SOURCES:%.cc=%.o)
diff --git a/2004/i/nono/src/fake_serial/fake_serial.cc b/2004/i/nono/src/fake_serial/fake_serial.cc
new file mode 100644
index 0000000..0d89e25
--- /dev/null
+++ b/2004/i/nono/src/fake_serial/fake_serial.cc
@@ -0,0 +1,109 @@
+// fake_serial.cc
+// nono - programme du robot 2004. {{{
+//
+// Copyright (C) 2004 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2004.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// 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.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include "fake_serial.h"
+#include "utils/rand.h"
+
+/// Constructeur.
+FakeSerial::FakeSerial (bool blocking/*false*/)
+ : blocking_ (blocking), lostP_ (1000), errorP_ (1000)
+{
+}
+
+/// Lit un bloc, retourne le nombre d'octets lus ou <= 0 en cas d'erreur
+/// ou si aucun caractère n'est disponible. Pour le robot, préferer en
+/// général getchar() pour du non-bloquant.
+ssize_t
+FakeSerial::read (void *buf, size_t size)
+{
+ char p[size];
+ int ret;
+ do
+ {
+ ret = ::read (0, p, size);
+ if (ret > 0)
+ {
+ char *po = reinterpret_cast<char *> (buf);
+ int n = 0;
+ for (int i = 0; i < ret; ++i)
+ {
+ if (!(rand () % lostP_))
+ {
+ // Saute le caractère.
+ }
+ else
+ {
+ po[n++] = doError (p[i]);
+ }
+ }
+ ret = n;
+ }
+ else
+ return ret;
+ } while (ret <= 0 && blocking_);
+ return ret;
+}
+
+/// Lit un caractère, ou -1 en cas d'erreur ou si aucun caractère n'est
+/// disponible.
+int
+FakeSerial::getchar (void)
+{
+ char c;
+ return read (&c, 1) > 0 ? c : -1;
+}
+
+/// Ecrit un bloc.
+void
+FakeSerial::write (const void *buf, size_t size)
+{
+ const unsigned char *p = reinterpret_cast<const unsigned char *> (buf);
+ size_t i;
+ char c;
+ for (i = 0; i < size; ++i)
+ {
+ if (!(rand () % lostP_))
+ continue;
+ c = doError (p[i]);
+ ::write (1, &c, 1);
+ }
+}
+
+/// Ecrit un caractère.
+void
+FakeSerial::putchar (int c)
+{
+ write (&c, 1);
+}
+
+/// Inverse peut-être un bit aléatoirement.
+char
+FakeSerial::doError (char c)
+{
+ if (!(rand () % errorP_))
+ return c ^ (1 << (rand () % 8));
+ else
+ return c;
+}
+
diff --git a/2004/i/nono/src/fake_serial/fake_serial.h b/2004/i/nono/src/fake_serial/fake_serial.h
new file mode 100644
index 0000000..4b68873
--- /dev/null
+++ b/2004/i/nono/src/fake_serial/fake_serial.h
@@ -0,0 +1,56 @@
+#ifndef fake_serial_h
+#define fake_serial_h
+// fake_serial.h
+// nono - programme du robot 2004. {{{
+//
+// Copyright (C) 2004 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2004.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// 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.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+
+#include <unistd.h>
+
+/// Classe émullant un port série sur l'entrée/sortie standart. Perd et
+/// modifie de temps en temps les octects comme un vrai port série.
+class FakeSerial
+{
+ bool blocking_;
+ /// Probabilitées de perte et d'erreur.
+ int lostP_, errorP_;
+ public:
+ /// Constructeur.
+ FakeSerial (bool blocking = false);
+ /// Lit un bloc, retourne le nombre d'octets lus ou <= 0 en cas d'erreur
+ /// ou si aucun caractère n'est disponible. Pour le robot, préferer en
+ /// général getchar() pour du non-bloquant.
+ ssize_t read (void *buf, size_t size);
+ /// Lit un caractère, ou -1 en cas d'erreur ou si aucun caractère n'est
+ /// disponible.
+ int getchar (void);
+ /// Ecrit un bloc.
+ void write (const void *buf, size_t size);
+ /// Ecrit un caractère.
+ void putchar (int c);
+ protected:
+ /// Inverse peut-être un bit aléatoirement.
+ char doError (char c);
+};
+
+#endif // fake_serial_h
diff --git a/2004/i/nono/src/fake_serial/test_fake_serial.cc b/2004/i/nono/src/fake_serial/test_fake_serial.cc
new file mode 100644
index 0000000..863ebf8
--- /dev/null
+++ b/2004/i/nono/src/fake_serial/test_fake_serial.cc
@@ -0,0 +1,37 @@
+// test_fake_serial.cc
+// nono - programme du robot 2004. {{{
+//
+// Copyright (C) 2004 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2004.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// 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.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include "fake_serial.h"
+
+int
+main (void)
+{
+ FakeSerial fs (true);
+ char c;
+ while ((c = fs.getchar ()) != -1)
+ {
+ fs.write (&c, 1);
+ }
+ return 0;
+}