Implement battery and temperature sensors.

On the raven, the battery and temperature readings are available
from the companion 3290 cpu over the serial line.
Modify the existing raven-lcd-interface application to export
these sensors.

platform/avr-raven/apps/raven-lcd-interface/Makefile.raven-lcd-interface

@@ -1,4 +1,4 @@
 raven-lcd-interface_src = raven-lcd.c
 
 
-CFLAGS+=-DRAVEN_LCD_INTERFACE=1
+CFLAGS+=-DRAVEN_LCD_INTERFACE=1 -DPLATFORM_HAS_BATTERY -DPLATFORM_HAS_TEMPERATURE

platform/avr-raven/apps/raven-lcd-interface/raven-lcd.c

@@ -42,6 +42,7 @@
  *  driver chip (ATMega3290P) on the Raven.
  *
  *  \author Blake Leverett <bleverett@gmail.com>
+ *  \author Cristiano De Alti <cristiano_dealti@hotmail.com>
  *
  * @{
  */
@@ -69,6 +70,7 @@
 #endif
 
 #include "raven-lcd.h"
+#include "lib/sensors.h"
 
 #include <string.h>
 #include <stdio.h>
@@ -94,6 +96,9 @@ static struct{
 #define UIP_ICMP_BUF            ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
 #define PING6_DATALEN 16
 
+static int battery_value;
+static int temperature_value;
+
 void rs232_send(uint8_t port, unsigned char c);
 
 /*---------------------------------------------------------------------------*/
@@ -306,12 +311,14 @@ raven_gui_loop(process_event_t ev, process_data_t data)
                 /* Set temperature string in web server */
                 web_set_temp((char *)cmd.frame);
 #endif
+                temperature_value = atoi((char *)cmd.frame);
                 break;
             case SEND_ADC2:
 #if AVR_WEBSERVER
                 /* Set ext voltage string in web server */
                 web_set_voltage((char *)cmd.frame);
 #endif
+				battery_value = atoi((char *)cmd.frame);
                 break;
             case SEND_SLEEP:
                 /* Sleep radio and 1284p. */
@@ -458,6 +465,42 @@ char buf[sizeof(eemem_server_name)+1];
     raven_lcd_show_text(buf);  //must fit in all the buffers or it will be truncated!
 }
 #endif
+
+/*---------------------------------------------------------------------------*/
+int
+value_temperature(int type) {
+    return temperature_value;
+}
+
+int
+value_battery(int type) {
+    return battery_value;
+}
+
+/*---------------------------------------------------------------------------*/  
+int
+configure(int type, int value) {
+    /* prevent compiler warnings */
+    return type = value = 1;
+}
+
+/*---------------------------------------------------------------------------*/
+int
+status(int type) {
+  switch(type) {
+  case SENSORS_ACTIVE:
+  case SENSORS_READY:
+    return 1;
+  }
+  return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+SENSORS_SENSOR(temperature_sensor, "Temperature",
+               value_temperature, configure, status);
+SENSORS_SENSOR(battery_sensor, "Battery",
+               value_battery, configure, status);
+
 /*---------------------------------------------------------------------------*/
 PROCESS(raven_lcd_process, "Raven LCD interface process");
 PROCESS_THREAD(raven_lcd_process, ev, data)

platform/avr-raven/dev/temperature-sensor.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2010, 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.
+ *
+ */
+
+/**
+ * \file
+ *         Temperature sensor header file.
+ * \author
+ *         Adam Dunkels <adam@sics.se>
+ *         Joakim Eriksson <joakime@sics.se>
+ *         Niclas Finne <nfi@sics.se>
+ */
+
+#ifndef TEMPERATURE_SENSOR_H_
+#define TEMPERATURE_SENSOR_H_
+
+#include "lib/sensors.h"
+
+extern const struct sensors_sensor temperature_sensor;
+
+#define TEMPERATURE_SENSOR "Temperature"
+
+#endif /* TEMPERATURE_SENSOR_H_ */