+/*
+ * Copyright (c) 2008, Titanium Mirror, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - 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.
+ * - Neither the name of Titanium Mirror, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT
+ * OWNER 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.
+ */
+
+/**
+ * Battery ADC reading.
+ *
+ * @author R. Steve McKown <smckown@gmail.com>
+ */
+
+#include "Msp430Adc12.h"
+
+module BatteryAdcP {
+ provides interface AdcConfigure<const msp430adc12_channel_config_t*>;
+}
+implementation {
+ /* TODO: The internal references are unsable, varying by more than 0.1V and
+ * jumping around. The external reference of 2.50V seems stable.
+ */
+ const msp430adc12_channel_config_t config = {
+ inch: INPUT_CHANNEL_A0,
+#if 0 /* internal references unstable */
+ sref: REFERENCE_VREFplus_AVss,
+ ref2_5v: REFVOLT_LEVEL_1_5,
+ ref2_5v: REFVOLT_LEVEL_2_5,
+#else /* external reference is stable */
+ sref: REFERENCE_VeREFplus_AVss,
+ ref2_5v: REFVOLT_LEVEL_1_5,
+#endif
+ adc12ssel: SHT_SOURCE_ADC12OSC,
+ adc12div: SHT_CLOCK_DIV_8,
+ sht: SAMPLE_HOLD_8_CYCLES,
+ sampcon_ssel: SAMPCON_SOURCE_ACLK,
+ sampcon_id: SAMPCON_CLOCK_DIV_1
+ };
+
+ async command const msp430adc12_channel_config_t* AdcConfigure.getConfiguration()
+ {
+ return &config;
+ }
+}