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motion.c
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/* motion.c
*
* a little program to display the coords returned by
* the powerbook motion sensor
*
* A fine piece of c0de, brought to you by
*
* ---===---
* *** teenage mutant ninja hero coders ***
* ---===---
*
* All of the software included is copyrighted by Christian Klein <[email protected]>.
*
* Copyright 2005 Christian Klein. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian Klein.
* 4. The name of the author must not be used to endorse or promote
* products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* Modified for iBook compatibility by Pall Thayer <http://www.this.is/pallit>
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <IOKit/IOKitLib.h>
#include "defines.c"
int getMotion(int macType, int structSize, int *values)
{
struct data {
char x;
char y;
char z;
char pad[structSize];
};
int kernFunc;
char *servMatch;
int iflag = 0;
kern_return_t result;
mach_port_t masterPort;
io_iterator_t iterator;
io_object_t aDevice;
io_connect_t dataPort;
IOItemCount structureInputSize;
IOByteCount structureOutputSize;
struct data inputStructure;
struct data outputStructure;
result = IOMasterPort(MACH_PORT_NULL, &masterPort);
switch(macType)
{
case MACBOOK:
iflag = 1;
kernFunc = 5;
servMatch ="SMCMotionSensor";
break;
case POWERBOOK:
kernFunc = 21;
servMatch = "IOI2CMotionSensor";
break;
case HIRESPOWERBOOK:
kernFunc = 21;
servMatch = "PMUMotionSensor";
break;
default:
kernFunc = 21;
servMatch = "PMUMotionSensor";
}
CFMutableDictionaryRef matchingDictionary = IOServiceMatching(servMatch);
result = IOServiceGetMatchingServices(masterPort, matchingDictionary, &iterator);
if (result != KERN_SUCCESS)
{
fputs(sprintf("IO Server '%s' returned error.\n",servMatch), stderr);
return -1;
}
aDevice = IOIteratorNext(iterator);
IOObjectRelease(iterator);
if(aDevice == 0)
{
fputs("No motion sensor available\n", stderr);
return -2;
}
result = IOServiceOpen(aDevice, mach_task_self(), 0, &dataPort);
IOObjectRelease(aDevice);
if(result != KERN_SUCCESS)
{
fputs("Could not open motion sensor device\n", stderr);
return -3;
}
structureInputSize = sizeof(struct data);
structureOutputSize = sizeof(struct data);
memset(&inputStructure, iflag, structureInputSize);
memset(&outputStructure, 0, structureOutputSize);
result = IOConnectMethodStructureIStructureO(
dataPort,
kernFunc,
structureInputSize,
&structureOutputSize,
&inputStructure,
&outputStructure
);
if(result != KERN_SUCCESS)
{
puts("no coords");
return -4;
} else {
values[0] = outputStructure.x;
values[1] = outputStructure.y;
values[2] = outputStructure.z;
}
IOServiceClose(dataPort);
return 1;
}