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a048d76e0d
Previously our accel / gyro drivers assumed that we had exactly two of each identical part in the system. Some systems may have different configurations, so allow this to be specified at the board-level. Note that our motion_sense algorithm currently assumes that we have one accelerometer in the lid and one in the base -- we'll need to fix that in another CL. BUG=chrome-os-partner:27320 TEST=Compile-only. Tested in future Samus commit. BRANCH=None. Change-Id: I1fae1f6c578fedebe78b473a5d66a5794ccaae00 Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/212321 Reviewed-by: Alec Berg <alecaberg@chromium.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Test motion sense code.
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*/
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#include <math.h>
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#include "math_util.h"
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#include "motion_sense.h"
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#include "test_util.h"
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#include "util.h"
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/*****************************************************************************/
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/* Need to define motion sensor globals just to compile. */
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const struct motion_sensor_t motion_sensors[] = {};
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const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
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/*****************************************************************************/
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/* Test utilities */
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/* Macro to compare two floats and check if they are equal within diff. */
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#define IS_FLOAT_EQUAL(a, b, diff) ((a) >= ((b) - diff) && (a) <= ((b) + diff))
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#define ACOS_TOLERANCE_DEG 0.5f
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#define RAD_TO_DEG (180.0f / 3.1415926f)
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static int test_acos(void)
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{
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float a, b;
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float test;
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/* Test a handful of values. */
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for (test = -1.0; test <= 1.0; test += 0.01) {
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a = arc_cos(test);
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b = acos(test) * RAD_TO_DEG;
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TEST_ASSERT(IS_FLOAT_EQUAL(a, b, ACOS_TOLERANCE_DEG));
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}
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return EC_SUCCESS;
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}
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void run_test(void)
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{
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test_reset();
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RUN_TEST(test_acos);
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test_print_result();
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}
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