changed sky sensors to new api

platform/sky/dev/light-sensor.c

@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2005, Swedish Institute of Computer Science
+ * 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.
+ *
+ * @(#)$Id: light-sensor.c,v 1.1 2010/01/14 13:53:06 joxe Exp $
+ */
+
+#include <stdlib.h>
+
+#include <io.h>
+
+#include "contiki.h"
+#include "lib/sensors.h"
+#include "dev/light.h"
+
+const struct sensors_sensor light_sensor;
+
+/*
+ * Initialize periodic readings from the 2 photo diodes. The most
+ * recent readings will be stored in ADC internal registers/memory.
+ */
+void
+static light_sensor_init(void)
+{
+  P6SEL |= 0x30;
+  P6DIR = 0xff;
+  P6OUT = 0x00;
+
+  /* Set up the ADC. */
+  ADC12CTL0 = REF2_5V + SHT0_6 + SHT1_6 + MSC; // Setup ADC12, ref., sampling time
+  ADC12CTL1 = SHP + CONSEQ_3 + CSTARTADD_0;	// Use sampling timer, repeat-sequenc-of-channels
+
+  ADC12MCTL0 = (INCH_4 + SREF_0); // photodiode 1 (P64)
+  ADC12MCTL1 = (INCH_5 + SREF_0); // photodiode 2 (P65)
+
+  ADC12CTL0 |= ADC12ON + REFON;
+
+  ADC12CTL0 |= ENC;		// enable conversion
+  ADC12CTL0 |= ADC12SC;		// sample & convert
+}
+
+/*---------------------------------------------------------------------------*/
+static unsigned int
+value(int type)
+{
+  /* should be constants */
+  switch (type) {
+/* Photosynthetically Active Radiation. */
+  case 0:   return ADC12MEM0;
+/* Total Solar Radiation. */
+  case 1:   return ADC12MEM1;
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+static void *
+status(int type)
+{
+  switch (type) {
+  case SENSORS_ACTIVE:
+  case SENSORS_READY:
+    return (ADC12CTL0 & (ADC12ON + REFON)) == (ADC12ON + REFON);
+  }
+  return NULL;
+}
+
+/*---------------------------------------------------------------------------*/
+static int
+configure(int type, void *c)
+{
+  switch (type) {
+  case SENSORS_ACTIVE:
+    if (c) {
+      if (!status(SENSORS_ACTIVE)) {
+	light_sensor_init();
+      }
+    } else {
+      /* shut down sensing */
+      ADC12CTL0 = 0;
+    }
+  }
+  return 0;
+}
+/*---------------------------------------------------------------------------*/
+SENSORS_SENSOR(light_sensor, "Light",
+	       value, configure, status);