--- /dev/null
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
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+
+ This version of the GNU Lesser General Public License incorporates
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+
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+differ in detail to address new problems or concerns.
+
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+Library as you received it specifies that a certain numbered version
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+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
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+Library.
\ No newline at end of file
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#ifndef _NOM_ACCELEROMETER_H_
+#define _NOM_ACCELEROMETER_H_
+
+typedef int value;
+typedef float angle;
+
+/* simplest retrieving functions: x,y,z,pitch,roll */
+value nom_accel_get_x ();
+value nom_accel_get_y ();
+value nom_accel_get_z ();
+void nom_accel_get_xyz (value* x, value* y, value* z);
+
+angle nom_accel_get_pitch ();
+angle nom_accel_get_roll ();
+void nom_accel_get_pitch_roll (angle* pitch, angle* roll);
+
+void nom_accel_get_all ( value* x, value* y, value* z,
+ angle* pitch, angle* roll );
+
+
+
+#endif
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#include "../include/accel.h"
+#include "global_p.h"
+
+value
+nom_accel_get_x () {
+ _accel_read_real_values ();
+ return _accel_proxy.x;
+}
+
+value
+nom_accel_get_y () {
+ _accel_read_real_values ();
+ return _accel_proxy.y;
+}
+
+value
+nom_accel_get_z () {
+ _accel_read_real_values ();
+ return _accel_proxy.z;
+}
+
+void
+nom_accel_get_xyz (value* x, value* y, value* z) {
+ _accel_read_real_values ();
+ *x = _accel_proxy.x;
+ *y = _accel_proxy.y;
+ *z = _accel_proxy.z;
+}
+
+angle
+nom_accel_get_pitch () {
+ _accel_read_real_values ();
+ _accel_recalculate_pitch ();
+ return _accel_proxy.pitch;
+}
+
+angle
+nom_accel_get_roll () {
+ _accel_read_real_values ();
+ _accel_recalculate_roll ();
+ return _accel_proxy.roll;
+}
+
+void
+nom_accel_get_pitch_roll (angle* pitch, angle* roll) {
+ _accel_read_real_values ();
+ _accel_recalculate_pitch_roll ();
+ *pitch = _accel_proxy.pitch;
+ *roll = _accel_proxy.roll;
+}
+
+void
+nom_accel_get_all (value* x, value* y, value* z,
+ angle* pitch, angle* roll)
+{
+ _accel_read_real_values ();
+ _accel_recalculate_pitch_roll ();
+ *pitch = _accel_proxy.pitch;
+ *roll = _accel_proxy.roll;
+ *x = _accel_proxy.x;
+ *y = _accel_proxy.y;
+ *z = _accel_proxy.z;
+}
\ No newline at end of file
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#include "global_p.h"
+#include <stdlib.h>
+
+void
+_nom_accel_proxy_init ()
+{
+ _accel_proxy.x = 0;
+ _accel_proxy.y = 0;
+ _accel_proxy.z = 0;
+ _accel_proxy.pitch = 0.0;
+ _accel_proxy.roll = 0.0;
+}
+
+void
+_accel_proxy_finit ()
+{
+ /* nothing to do yet */
+}
+
+void
+_accel_read_real_values ()
+{
+ FILE* fd;
+ fd = fopen(_accel_device_file_name, "r");
+ if(0 == fd) return;
+ fscanf ( fd, "%i %i %i",
+ &_accel_proxy.x,
+ &_accel_proxy.y,
+ &_accel_proxy.z );
+ fclose(fd);
+}
+
+void
+_accel_recalculate_pitch () {
+ _accel_proxy.pitch = YZ_TO_PITCH(_accel_proxy.y, _accel_proxy.z);
+}
+
+void
+_accel_recalculate_roll () {
+ _accel_proxy.roll = XY_TO_ROLL(_accel_proxy.x, _accel_proxy.y);
+}
+
+
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#ifndef _NOM_GLOBAL_H_
+#define _NOM_GLOBAL_H_
+#include <math.h>
+
+#define YZ_TO_PITCH(y,z) atan2((y),(-z))
+#define XY_TO_ROLL(x,y) atan2((x),(-y))
+#define XYZ_TO_PITCH(x,y,z) YZ_TO_PITCH(y,z)
+#define XYZ_TO_ROLL(x,y,z) XY_TO_ROLL(x,y)
+
+typedef struct _NomAccelProxy NomAccelProxy;
+struct _NomAccelProxy {
+ value x;
+ value y;
+ value z;
+ angle pitch;
+ angle roll;
+};
+
+void _accel_proxy_init ();
+void _accel_proxy_finit ();
+void _accel_read_real_values ();
+void _accel_recalculate_pitch ();
+void _accel_recalculate_roll ();
+#define _accel_recalculate_pitch_roll() _accel_recalculate_pitch(); _accel_recalculate_roll()
+
+const char* const _accel_device_file_name = "/sys/class/i2c-adapter/i2c-3/3-001d/coord";
+NomAccelProxy _accel_proxy = {0};
+
+#endif
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#include "../include/accel.h"
+#include "global_p.h"
+
+void __attribute__ ((constructor)) _nom_accel_library_init(void)
+{
+ _accel_proxy_init ();
+}
+
+void __attribute__ ((destructor)) _nom_accel_library_finalize(void)
+{
+ _accel_proxy_finit ();
+}
--- /dev/null
+/* ============================================================================
+ Copyright (C) 2010 nomrasco
+ Nom Rasco <nomrasco@gmail.com>
+
+ This file is part of libnomaccel.
+
+ libnomaccel is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ libnomaccel 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with libnomaccel. If not, see <http://www.gnu.org/licenses/>.
+============================================================================ */
+#ifndef _NOM_TEMPLATE_H_
+#define _NOM_TEMPLATE_H_
+#include "template.h"
+
+ USE THIS FILE AS A TEMPLATE FOR A NEW FILES: HEADERS AND IMPLEMENTATIONS
+
+#endif
projects / libnomaccel / commitdiff