main.cpp

/*
 * Copyright (c) 2014-2018, Niklas Hauser
 * Copyright (c) 2015, Kevin Läufer
 * Copyright (c) 2015, Martin Esser
 *
 * This file is part of the modm project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
// ----------------------------------------------------------------------------

#include <modm/board.hpp>
#include <modm/driver/inertial/lis302dl.hpp>
#include <modm/processing.hpp>
#include <modm/math/filter.hpp>


// ST changed the accelerometer in the C revision (MB997C)
// change this to `false`, if you have MB997A or MB997B!
#define REVISION_C true

// if you want to use Software I2c change this to `true`
#define USE_I2C false


namespace lis
{

#if USE_I2C
// I2c Transport Layer
typedef GpioA5 Scl;
typedef GpioA7 Sda;
typedef BitBangI2cMaster<Scl, Sda> I2cMaster;

typedef modm::Lis3TransportI2c< I2cMaster > Transport;
#else
typedef Board::lis3::Transport Transport;
#endif

} // namespace lis3

// Data and Driver object
#if REVISION_C
modm::lis3dsh::Data data;
modm::Lis3dsh< lis::Transport > accel(data);
#else
modm::lis302dl::Data data;
modm::Lis302dl< lis::Transport > accel(data);
#endif
modm::filter::MovingAverage<float, 25> averageX;
modm::filter::MovingAverage<float, 25> averageY;

int
main()
{
	Board::initialize();

#if USE_I2C
	Board::lis3::Cs::setOutput(modm::Gpio::High);
	Board::lis3::Mosi::setOutput(modm::Gpio::High);

	lis::I2cMaster::connect<lis::Scl::BitBang, lis::Sda::BitBang>(lis::I2cMaster::PullUps::Internal);
	lis::I2cMaster::initialize<Board::SystemClock, 400_kHz>();
#else
	Board::initializeLis3();
#endif

	while(not accel.ping())
	{
		Board::LedOrange::set();
		modm::delay(100ms);
		Board::LedOrange::reset();
	}

	// initialize with limited range of ~2.3G
	accel.configure(accel.Scale::G2, accel.MeasurementRate::Hz400);

	while (true)
	{
		accel.readAcceleration();

#if REVISION_C
		averageX.update(-accel.getData().getY());
		averageY.update(accel.getData().getX());
#else
		averageX.update(accel.getData().getX());
		averageY.update(accel.getData().getY());
#endif

		Board::LedOrange::set(averageX.getValue() < -0.2f);
		Board::LedBlue::set(averageX.getValue() > 0.2f);
		Board::LedGreen::set(averageY.getValue() < -0.2f);
		Board::LedRed::set(averageY.getValue() > 0.2f);

		modm::delay(5ms);
	}

	return 0;
}