To understand the functions we have to use the vitasdk documentation, for this specific sample we will use the motion section
Reminder: the threshold is the magnitude or intensity that must be exceeded for a certain reaction, phenomenon, result, or condition to occur or be manifested.
SAMPLE "motion"
motion: Prints accelerometer data.#include <stdio.h>
#include <stdbool.h>
#include <psp2/kernel/processmgr.h>
#include <psp2/ctrl.h>
#include <psp2/motion.h>
#include "debugScreen.h"
#define printf psvDebugScreenPrintf
// main program
int main(){
psvDebugScreenInit(); // needed for the prints to show on the vita screen.
SceCtrlData ctrl; // used to read the buttons (used when options are offered in the sample)
float threshold; // used to have a base number for the sensor data to be displayed
bool is_sampling=false; // used to know if we are sampling the data or not
// loop for sampling
while(1){
// control questions to set up the sampling and to quit
sceCtrlReadBufferPositive(0, &ctrl, 1);
printf("\e[60;35HPress Start to quit\n");
if(ctrl.buttons & SCE_CTRL_START)
break;
printf("\e[H");/*reset the cursor position to 0,0*/
printf("Sampling:%3s (X:ON, O:OFF)\n",is_sampling?"ON":"OFF");
if((ctrl.buttons & SCE_CTRL_CROSS) && !is_sampling)
is_sampling=(sceMotionStartSampling()==0);
if((ctrl.buttons & SCE_CTRL_CIRCLE) && is_sampling)
is_sampling=(sceMotionStopSampling()!=0);
printf("Deadband:%3s ([]: ON, /\\:OFF)\n",sceMotionGetDeadband()?"ON":"OFF");
if(ctrl.buttons & SCE_CTRL_SQUARE)
sceMotionSetDeadband(1);
if(ctrl.buttons & SCE_CTRL_TRIANGLE)
sceMotionSetDeadband(0);
threshold = sceMotionGetAngleThreshold();
printf("AngleThreshold:%+1.3f (Up:+=0.1,Down:-=0.1)\n",threshold);
if(ctrl.buttons & SCE_CTRL_UP)
sceMotionSetAngleThreshold(threshold+0.1f);
if(ctrl.buttons & SCE_CTRL_DOWN)
sceMotionSetAngleThreshold(threshold-0.1f);
printf("TiltCorrection:%i (RIGHT:ON, LEFT:OFF)\n",sceMotionGetTiltCorrection());
if(ctrl.buttons & SCE_CTRL_LEFT)
sceMotionSetTiltCorrection(0);
if(ctrl.buttons & SCE_CTRL_RIGHT)
sceMotionSetTiltCorrection(1);
printf("\n");
/* no need to further if we are not sampling */
if(!is_sampling)
continue;
/* Here we read all the data from the motion sensor in the vita and use printf to display it on the screen */
printf("Magnetometer:%3s (L:ON, R:OFF)\n",sceMotionGetMagnetometerState()?"ON":"OFF");
if(ctrl.buttons & SCE_CTRL_LTRIGGER)
sceMotionMagnetometerOn();
if(ctrl.buttons & SCE_CTRL_RTRIGGER)
sceMotionMagnetometerOff();
printf("\nPress Select to calibrate as Origin\n");
if(ctrl.buttons & SCE_CTRL_SELECT)
sceMotionReset();
SceMotionState state;
sceMotionGetState(&state);
printf("Acceleration <x:%+1.3f y:%+1.3f z:%+1.3f> \n",state.acceleration.x, state.acceleration.y, state.acceleration.z);
printf("Ang.Velocity <x:%+1.3f y:%+1.3f z:%+1.3f> \n",state.angularVelocity.x, state.angularVelocity.y, state.angularVelocity.z);
printf("Orientation <x:%+1.3f y:%+1.3f z:%+1.3f> \n",state.basicOrientation.x, state.basicOrientation.y, state.basicOrientation.z);
printf("Device <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.deviceQuat.x, state.deviceQuat.y, state.deviceQuat.z, state.deviceQuat.w);
printf("Rotation.X <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.rotationMatrix.x.x, state.rotationMatrix.x.y, state.rotationMatrix.x.z, state.rotationMatrix.x.w);
printf("Rotation.Y <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.rotationMatrix.y.x, state.rotationMatrix.y.y, state.rotationMatrix.y.z, state.rotationMatrix.y.w);
printf("Rotation.Z <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.rotationMatrix.z.x, state.rotationMatrix.z.y, state.rotationMatrix.z.z, state.rotationMatrix.z.w);
printf("Rotation.W <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.rotationMatrix.w.x, state.rotationMatrix.w.y, state.rotationMatrix.w.z, state.rotationMatrix.w.w);
printf("NedMatrix.X <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.nedMatrix.x.x, state.nedMatrix.x.y, state.nedMatrix.x.z, state.nedMatrix.x.w);
printf("NedMatrix.Y <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.nedMatrix.y.x, state.nedMatrix.y.y, state.nedMatrix.y.z, state.nedMatrix.y.w);
printf("NedMatrix.Z <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.nedMatrix.z.x, state.nedMatrix.z.y, state.nedMatrix.z.z, state.nedMatrix.z.w);
printf("NedMatrix.W <x:%+1.3f y:%+1.3f z:%+1.3f w:%+1.3f>\n",state.nedMatrix.w.x, state.nedMatrix.w.y, state.nedMatrix.w.z, state.nedMatrix.w.w);
printf("\n");
SceMotionSensorState sensor;
sceMotionGetSensorState(&sensor, 1);
printf("SensorCounter:%i \n",sensor.counter);
printf("accelerometer<x:%+1.3f y:%+1.3f z:%+1.3f> \n",sensor.accelerometer.x, sensor.accelerometer.y, sensor.accelerometer.z);
SceFVector3 basicOrientation;
sceMotionGetBasicOrientation(&basicOrientation);
printf("basicOrient. <x:%+1.3f y:%+1.3f z:%+1.3f> \n",basicOrientation.x, basicOrientation.y, basicOrientation.z);
/* sceMotionRotateYaw(float radians);*/
}
sceKernelExitProcess(0); // close the vita proccess runing, usually close the app
return 0;
}
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Some screenshots from the sample running on the vita:
And that's all for this sample. |
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