Adding battery sensor

2010-02-24 09:05:40 +00:00 · 2010-02-24 09:05:40 +00:00 · 0c9612b7b9
parent ea53e5b845
commit 0c9612b7b9
1 changed files with 103 additions and 0 deletions
--- a/platform/micaz/dev/sensors/battery-sensor.c
+++ b/platform/micaz/dev/sensors/battery-sensor.c
@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2010, University of Colombo School of Computing.
+ * All rights reserved.
+ *
+ * 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+ *
+ * This file is part of the Contiki operating system.
+ */
+
+/**
+ * \file
+ *         Battery sensor driver.
+ * \author
+ *         Kasun Hewage <kasun.ch@gmail.com>
+ */
+
+#include <avr/io.h>
+#include "dev/battery-sensor.h"
+#include "dev/adc.h"
+
+
+#define BAT_MONITOR_PORT PORTF
+#define BAT_MONITOR_PIN_MASK _BV(1)
+#define BAT_MONITOR_PORT_DDR DDRF
+#define BAT_MONITOR_ADC_CHANNEL 30
+
+const struct sensors_sensor battery_sensor;
+static uint8_t active;
+/*---------------------------------------------------------------------------*/
+static void
+activate(void)
+{
+  /* This assumes that some other sensor system already did setup the ADC */
+  adc_init();
+
+  /* Enable battery sensor. */
+  BAT_MONITOR_PORT |= BAT_MONITOR_PIN_MASK;
+  BAT_MONITOR_PORT_DDR |= BAT_MONITOR_PIN_MASK;
+
+  active = 1;
+}
+/*---------------------------------------------------------------------------*/
+static void
+deactivate(void)
+{
+  active = 0;
+}
+/*---------------------------------------------------------------------------*/
+static int
+value(int type)
+{
+  return get_adc(BAT_MONITOR_ADC_CHANNEL);
+}
+/*---------------------------------------------------------------------------*/
+static int
+configure(int type, int c)
+{
+  switch(type) {
+  case SENSORS_ACTIVE:
+    if (c) {
+      activate();
+    } else {
+      deactivate();
+    }
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+static int
+status(int type)
+{
+  switch (type) {
+  case SENSORS_ACTIVE:
+  case SENSORS_READY:
+    return active;
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+SENSORS_SENSOR(battery_sensor, BATTERY_SENSOR,
+	       value, configure, status);