From 58a34aa03efa2aa181fb8ff190dfa1d8b50d46e5 Mon Sep 17 00:00:00 2001
From: Paul Kocialkowski <contact@paulk.fr>
Date: Thu, 2 Jan 2014 22:37:45 +0100
Subject: Piranha Sensors

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
---
 sensors/orientationd/yas530.c | 85 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 sensors/orientationd/yas530.c

(limited to 'sensors/orientationd/yas530.c')

diff --git a/sensors/orientationd/yas530.c b/sensors/orientationd/yas530.c
new file mode 100644
index 0000000..7942c50
--- /dev/null
+++ b/sensors/orientationd/yas530.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <sys/types.h>
+#include <linux/ioctl.h>
+#include <linux/input.h>
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "orientationd"
+#include <utils/Log.h>
+
+#include "orientationd.h"
+
+float yas530_convert(int value)
+{
+	return value / 1000.0f;
+}
+
+int yas530_get_data(struct orientationd_handlers *handlers,
+	struct orientationd_data *data)
+{
+	struct input_event input_event;
+	int input_fd;
+	int rc;
+
+	if (handlers == NULL || data == NULL)
+		return -EINVAL;
+
+	input_fd = handlers->poll_fd;
+	if (input_fd < 0)
+		return -1;
+
+	do {
+		rc = read(input_fd, &input_event, sizeof(input_event));
+		if (rc < (int) sizeof(input_event))
+			break;
+
+		if (input_event.type == EV_ABS) {
+			switch (input_event.code) {
+				case ABS_X:
+					data->magnetic.x = yas530_convert(input_event.value);
+					break;
+				case ABS_Y:
+					data->magnetic.y = yas530_convert(input_event.value);
+					break;
+				case ABS_Z:
+					data->magnetic.z = yas530_convert(input_event.value);
+					break;
+				default:
+					continue;
+			}
+		}
+	} while (input_event.type != EV_SYN);
+
+	return 0;
+}
+
+struct orientationd_handlers yas530 = {
+	.input_name = "geomagnetic",
+	.handle = SENSOR_TYPE_MAGNETIC_FIELD,
+	.poll_fd = -1,
+	.get_data = yas530_get_data,
+};
-- 
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