From df54ababd77bd3cc925f176e9c615fe97f96ce09 Mon Sep 17 00:00:00 2001
From: Martin Mueller <martin@pfump.org>
Date: Fri, 22 Jul 2011 17:13:15 +0200
Subject: [PATCH] Add University of Reading solar radiation sensor.

---
 conf/messages.xml                       | 23 ++++++-
 conf/modules/light_solar.xml            | 17 ++++++
 sw/airborne/modules/meteo/light_solar.c | 80 +++++++++++++++++++++++++
 sw/airborne/modules/meteo/light_solar.h | 14 +++++
 4 files changed, 133 insertions(+), 1 deletion(-)
 create mode 100644 conf/modules/light_solar.xml
 create mode 100644 sw/airborne/modules/meteo/light_solar.c
 create mode 100644 sw/airborne/modules/meteo/light_solar.h

diff --git a/conf/messages.xml b/conf/messages.xml
index 5fee9d9122..d09933be9f 100644
--- a/conf/messages.xml
+++ b/conf/messages.xml
@@ -800,7 +800,28 @@
     <field name="t9" type="uint16"/>
   </message>
 
- <!--119 is free -->
+  <message name="SOLAR_RADIATION" id="119">
+    <field name="up_t0" type="uint16"/>
+    <field name="dn_t0" type="uint16"/>
+    <field name="up_t1" type="uint16"/>
+    <field name="dn_t1" type="uint16"/>
+    <field name="up_t2" type="uint16"/>
+    <field name="dn_t2" type="uint16"/>
+    <field name="up_t3" type="uint16"/>
+    <field name="dn_t3" type="uint16"/>
+    <field name="up_t4" type="uint16"/>
+    <field name="dn_t4" type="uint16"/>
+    <field name="up_t5" type="uint16"/>
+    <field name="dn_t5" type="uint16"/>
+    <field name="up_t6" type="uint16"/>
+    <field name="dn_t6" type="uint16"/>
+    <field name="up_t7" type="uint16"/>
+    <field name="dn_t7" type="uint16"/>
+    <field name="up_t8" type="uint16"/>
+    <field name="dn_t8" type="uint16"/>
+    <field name="up_t9" type="uint16"/>
+    <field name="dn_t9" type="uint16"/>
+  </message>
 
   <message name="TCAS_TA" ID="120">
     <field name="ac_id" type="uint8"/>
diff --git a/conf/modules/light_solar.xml b/conf/modules/light_solar.xml
new file mode 100644
index 0000000000..7cf08e80b9
--- /dev/null
+++ b/conf/modules/light_solar.xml
@@ -0,0 +1,17 @@
+<!DOCTYPE module SYSTEM "module.dtd">
+
+<module name="light_solar" dir="meteo">
+  <header>
+    <file name="light_solar.h"/>
+  </header>
+  <init fun="light_solar_init()"/>
+  <periodic fun="light_solar_periodic()" freq="60"/>
+  <makefile target="ap">
+    <file name="light_solar.c"/>
+    <define name="ADC_CHANNEL_LIGHT_SOLAR_UP" value="ADC_1"/>
+    <define name="USE_ADC_1"/>
+    <define name="ADC_CHANNEL_LIGHT_SOLAR_DN" value="ADC_2"/>
+    <define name="USE_ADC_2"/>
+  </makefile>
+</module>
+
diff --git a/sw/airborne/modules/meteo/light_solar.c b/sw/airborne/modules/meteo/light_solar.c
new file mode 100644
index 0000000000..38b20450a0
--- /dev/null
+++ b/sw/airborne/modules/meteo/light_solar.c
@@ -0,0 +1,80 @@
+/*
+ * $Id: light_solar.c $
+ *
+ * Copyright (C) 2011 Martin Mueller
+ *
+ * This file is part of paparazzi.
+ *
+ * paparazzi 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 2, or (at your option)
+ * any later version.
+ *
+ * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+/** \file light_solar.c
+ *  \brief University of Reading solar radiation sensor interface
+ *
+ *   This reads the values for intensity from the University of Reading solar sensor.
+ */
+
+
+#include "mcu_periph/adc.h"
+#include "mcu_periph/uart.h"
+#include "messages.h"
+#include "downlink.h"
+#include "modules/meteo/light_solar.h"
+
+#ifndef ADC_CHANNEL_LIGHT_SOLAR_UP
+#define ADC_CHANNEL_LIGHT_SOLAR_UP ADC_1
+#endif
+#ifndef ADC_CHANNEL_LIGHT_SOLAR_DN
+#define ADC_CHANNEL_LIGHT_SOLAR_DN ADC_2
+#endif
+
+#ifndef ADC_CHANNEL_LIGHT_NB_SAMPLES
+#define ADC_CHANNEL_LIGHT_NB_SAMPLES 16
+#endif
+
+#ifndef DOWNLINK_DEVICE
+#define DOWNLINK_DEVICE DOWNLINK_AP_DEVICE
+#endif
+
+uint16_t up[LIGHT_NB], dn[LIGHT_NB];
+int32_t  light_cnt;
+
+static struct adc_buf buf_light_sol_up;
+static struct adc_buf buf_light_sol_dn;
+
+void light_solar_init( void ) {
+  adc_buf_channel(ADC_CHANNEL_LIGHT_SOLAR_UP, &buf_light_sol_up, ADC_CHANNEL_LIGHT_NB_SAMPLES);
+  adc_buf_channel(ADC_CHANNEL_LIGHT_SOLAR_DN, &buf_light_sol_dn, ADC_CHANNEL_LIGHT_NB_SAMPLES);
+  
+  light_cnt = 0;
+}
+
+void light_solar_periodic( void ) {
+  up[light_cnt] = buf_light_sol_up.sum / buf_light_sol_up.av_nb_sample;
+  dn[light_cnt] = buf_light_sol_dn.sum / buf_light_sol_dn.av_nb_sample;
+  
+  /* 10k/10k voltage divider, 10 bits adc, 3.3V max */
+
+  if (++light_cnt >= LIGHT_NB) {
+    DOWNLINK_SEND_SOLAR_RADIATION(DefaultChannel, 
+          &up[0], &dn[0], &up[1], &dn[1], &up[2], &dn[2], &up[3], &dn[3],
+          &up[4], &dn[4], &up[5], &dn[5], &up[6], &dn[6], &up[7], &dn[7],
+          &up[8], &dn[8], &up[9], &dn[9]);
+    light_cnt = 0;
+  }
+}
+
diff --git a/sw/airborne/modules/meteo/light_solar.h b/sw/airborne/modules/meteo/light_solar.h
new file mode 100644
index 0000000000..7fbcb1bd01
--- /dev/null
+++ b/sw/airborne/modules/meteo/light_solar.h
@@ -0,0 +1,14 @@
+#ifndef TEMP_SOLAR_H
+#define TEMP_SOLAR_H
+
+#include "std.h"
+
+#define LIGHT_NB 10
+
+extern uint16_t up[LIGHT_NB], dn[LIGHT_NB];
+extern int32_t  light_cnt;
+
+void light_solar_init(void);
+void light_solar_periodic(void);
+
+#endif