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Diffstat (limited to '2003/i/buspctl/src/serial.c')
-rw-r--r--2003/i/buspctl/src/serial.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/2003/i/buspctl/src/serial.c b/2003/i/buspctl/src/serial.c
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+/* serial.c */
+/* {{{
+ *
+ * Copyright (C) 2003 Nicolas Schodet
+ *
+ * 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.
+ *
+ * Contact :
+ * Web: http://perso.efrei.fr/~schodet/
+ * Email: <contact@ni.fr.eu.org>
+ * }}} */
+#include <serial.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+/* +AutoDec */
+/* -AutoDec */
+
+/* Les variables globales, c'est mal. */
+static int serial_busp_fd = -1;
+
+/* Ouvre le port série. */
+int
+serial_busp_init (const char *file)
+{
+ serial_busp_fd = open (file, O_RDONLY);
+ return serial_busp_fd;
+}
+
+/* Ferme le port série. */
+void
+serial_busp_uninit (void)
+{
+ close (serial_busp_fd);
+}
+
+/* Ecrit un octet. */
+void
+serial_busp_write (int addr, int data)
+{
+ unsigned char c;
+ c = addr & 0x0f;
+ write (serial_busp_fd, &c, 1);
+ c = data;
+ write (serial_busp_fd, &c, 1);
+}
+
+/* Lit un octet. */
+int
+serial_busp_read (int addr)
+{
+ unsigned char c, c2;
+ c = (addr & 0x0f) | 0x10;
+ write (serial_busp_fd, &c, 1);
+ read (serial_busp_fd, &c2, 1);
+ // if (c != c2) ...
+ read (serial_busp_fd, &c, 1);
+ return c;
+}