1 files changed, 177 insertions, 0 deletions
diff --git a/src/osmo-bts-oc2g/misc/oc2gbts_power.c b/src/osmo-bts-oc2g/misc/oc2gbts_power.c
new file mode 100644
index 00000000..4e2fc95a
--- /dev/null
+++ b/src/osmo-bts-oc2g/misc/oc2gbts_power.c
@@ -0,0 +1,177 @@
+/* Copyright (C) 2015 by Yves Godin <support@nuranwireless.com>
+ * 
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+
+#include "oc2gbts_power.h"
+
+static const char *power_enable_devs[_NUM_POWER_SOURCES] = {
+	[OC2GBTS_POWER_PA]     = "/var/oc2g/pa-state/pa0/state",
+};
+
+static const char *power_sensor_devs[_NUM_POWER_SOURCES] = {
+	[OC2GBTS_POWER_SUPPLY]	= "/var/oc2g/pwr-sense/main-supply/",
+	[OC2GBTS_POWER_PA]		= "/var/oc2g/pwr-sense/pa0/",
+};
+
+static const char *power_sensor_type_str[_NUM_POWER_TYPES] = {
+	[OC2GBTS_POWER_POWER]	= "power",
+	[OC2GBTS_POWER_VOLTAGE]	= "voltage",
+	[OC2GBTS_POWER_CURRENT]	= "current",
+};
+
+int oc2gbts_power_sensor_get(
+	enum oc2gbts_power_source source,
+	enum oc2gbts_power_type type,
+	int *power)
+{
+	char buf[PATH_MAX];
+	char pwrstr[10];
+	int fd, rc;
+
+	if (source >= _NUM_POWER_SOURCES)
+		return -EINVAL;
+
+	if (type >= _NUM_POWER_TYPES)
+		return -EINVAL;
+
+	snprintf(buf, sizeof(buf)-1, "%s%s", power_sensor_devs[source], power_sensor_type_str[type]);
+	buf[sizeof(buf)-1] = '\0';
+
+	fd = open(buf, O_RDONLY);
+	if (fd < 0)
+		return fd;
+
+	rc = read(fd, pwrstr, sizeof(pwrstr));
+	pwrstr[sizeof(pwrstr)-1] = '\0';
+	if (rc < 0) {
+		close(fd);
+		return rc;
+	}
+	if (rc == 0) {
+		close(fd);
+		return -EIO;
+	}
+	close(fd);
+	*power = atoi(pwrstr);
+	return 0;
+}
+
+
+int oc2gbts_power_set(
+        enum oc2gbts_power_source source,
+        int en)
+{
+	int fd;
+	int rc;
+
+	if (source != OC2GBTS_POWER_PA) {
+		return -EINVAL;
+	}
+
+	fd = open(power_enable_devs[source], O_WRONLY);
+	if (fd < 0) {
+		return fd;
+	}
+	rc = write(fd, en?"1":"0", 2);
+	close( fd );
+	
+	if (rc != 2) {
+		return -1;
+	}
+	
+	if (en) usleep(50*1000);
+
+	return 0;
+}
+
+int oc2gbts_power_get(
+        enum oc2gbts_power_source source)
+{
+	int fd;
+	int rc;
+	int retVal = 0;
+	char enstr[10];
+
+	fd = open(power_enable_devs[source], O_RDONLY);
+	if (fd < 0) {
+		return fd;
+	}
+
+	rc = read(fd, enstr, sizeof(enstr));
+        enstr[rc-1] = '\0';
+        
+	close(fd);
+
+        if (rc < 0) {
+                return rc;
+        }
+        if (rc == 0) {
+                return -EIO;
+        }
+
+	rc = strcmp(enstr, "enabled");
+	if(rc == 0) {
+		retVal = 1;
+	}
+	
+        return retVal;
+}
+
+static const char *vswr_devs[_NUM_VSWR_SENSORS] = {
+	[OC2GBTS_VSWR]		= "/var/oc2g/vswr/tx0/vswr",
+};
+
+int oc2gbts_vswr_get(enum oc2gbts_vswr_sensor sensor, int *vswr)
+{
+	char buf[PATH_MAX];
+	char vswrstr[8];
+	int fd, rc;
+
+	if (sensor < 0 || sensor >= _NUM_VSWR_SENSORS)
+		return -EINVAL;
+
+	snprintf(buf, sizeof(buf)-1, "%s", vswr_devs[sensor]);
+	buf[sizeof(buf)-1] = '\0';
+
+	fd = open(buf, O_RDONLY);
+	if (fd < 0)
+		return fd;
+
+	rc = read(fd, vswrstr, sizeof(vswrstr));
+	vswrstr[sizeof(vswrstr)-1] = '\0';
+	if (rc < 0) {
+		close(fd);
+		return rc;
+	}
+	if (rc == 0) {
+		close(fd);
+		return -EIO;
+	}
+	close(fd);
+	*vswr = atoi(vswrstr);
+	return 0;
+}