From 5974c37abba562c1372beb04490014db274fd175 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Sat, 27 Apr 2013 14:06:23 +0200
Subject: Moved the bulk of sensor drivers to the new world

---
 src/drivers/gps/gps_helper.cpp | 92 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/drivers/gps/gps_helper.cpp

(limited to 'src/drivers/gps/gps_helper.cpp')

diff --git a/src/drivers/gps/gps_helper.cpp b/src/drivers/gps/gps_helper.cpp
new file mode 100644
index 000000000..9c1fad569
--- /dev/null
+++ b/src/drivers/gps/gps_helper.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+ *
+ *   Copyright (C) 2008-2013 PX4 Development Team. All rights reserved.
+ *   Author: Thomas Gubler <thomasgubler@student.ethz.ch>
+ *           Julian Oes <joes@student.ethz.ch>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#include <termios.h>
+#include <errno.h>
+#include <systemlib/err.h>
+#include "gps_helper.h"
+
+/* @file gps_helper.cpp */
+
+int
+GPS_Helper::set_baudrate(const int &fd, unsigned baud)
+{
+	/* process baud rate */
+	int speed;
+
+	switch (baud) {
+	case 9600:   speed = B9600;   break;
+
+	case 19200:  speed = B19200;  break;
+
+	case 38400:  speed = B38400;  break;
+
+	case 57600:  speed = B57600;  break;
+
+	case 115200: speed = B115200; break;
+
+	warnx("try baudrate: %d\n", speed);
+
+	default:
+		warnx("ERROR: Unsupported baudrate: %d\n", baud);
+		return -EINVAL;
+	}
+	struct termios uart_config;
+	int termios_state;
+
+	/* fill the struct for the new configuration */
+	tcgetattr(fd, &uart_config);
+
+	/* clear ONLCR flag (which appends a CR for every LF) */
+	uart_config.c_oflag &= ~ONLCR;
+	/* no parity, one stop bit */
+	uart_config.c_cflag &= ~(CSTOPB | PARENB);
+
+	/* set baud rate */
+	if ((termios_state = cfsetispeed(&uart_config, speed)) < 0) {
+		warnx("ERROR setting config: %d (cfsetispeed)\n", termios_state);
+		return -1;
+	}
+	if ((termios_state = cfsetospeed(&uart_config, speed)) < 0) {
+		warnx("ERROR setting config: %d (cfsetospeed)\n", termios_state);
+		return -1;
+	}
+	if ((termios_state = tcsetattr(fd, TCSANOW, &uart_config)) < 0) {
+		warnx("ERROR setting baudrate (tcsetattr)\n");
+		return -1;
+	}
+	/* XXX if resetting the parser here, ensure it does exist (check for null pointer) */
+	return 0;
+}
-- 
cgit v1.2.3