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Selbständige Erkennung von kurzen und langen Klicks #35

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Selbständige Erkennung von kurzen und langen Klicks #35

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e7cbe13
Feste Zeiten fuer bell_process entfernt.
atdotde Nov 6, 2013
4e6281b
Debugging printfs entfernt
atdotde Nov 6, 2013
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114 changes: 85 additions & 29 deletions software/lockcontroller/bell_process.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,18 +19,21 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bell_process.h"
#include "pinutils.h"
#include "../common/pinutils.h"
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <math.h>

#define MIN_PRESS 50
#define MAX_PRESS 2500
#define MIN_BREAK 50
#define MAX_BREAK 2500
#define MAX_BEEPS 20

//static const int16_t times[] = {-200, -200, 500, -200, -200};
//static const int16_t times[] = {-400, -400, 800, -400, -400};
static const int16_t times[] = {400};

static char *code = ".--.---";
static int16_t times[MAX_BEEPS + 1];
static uint8_t step;
static uint8_t debounce;
static bool pressed;
Expand Down Expand Up @@ -94,34 +97,17 @@ void bell_tick(void)


if( !pressed && press_timer > 0 ){
if( times[step] > 0 ){
if( press_timer > MIN_PRESS &&
press_timer > times[step] ){
step++;
}else{
step = 0;
}
}else{
if( press_timer > MIN_PRESS &&
press_timer < -times[step] ){
step++;
}else{
step = 0;
}
}
press_timer = -1;

if( step * sizeof(times[0]) == sizeof(times) ){
accepted = true;
if ( press_timer > MIN_PRESS && press_timer < MAX_PRESS && step < MAX_BEEPS){
times[step + 1] = 0;
times[step++] = press_timer;
}
else{
step = 0;
press_timer = -1;
c = 2000;
}
}

if( press_timer > MAX_PRESS ){
press_timer = -1;
step = 0;
}

if( break_timer > MAX_BREAK ){
break_timer = -1;
step = 0;
Expand All @@ -131,7 +117,77 @@ void bell_tick(void)

bool bell_isAccepted(void)
{
return accepted;
int beeps = 0;
int boundary;
double best_badness = 10000000.0;
int16_t best_boundary = 0;
double badness;
int beep;
bool matches = true;

while(times[beeps++])
;

--beeps;

if(beeps != strlen(code))
return(false);


for(boundary = 0; boundary <= beeps; boundary++){

int nshort = 0;
int nlong = 0 ;
int16_t sshort = 0;
int16_t ssshort = 0;
int16_t slong = 0;
int16_t sslong = 0;

for(beep = 0; beep < beeps; beep++){
if(times[beep] <= times[boundary]){
++nshort;
sshort += times[beep];
ssshort += times[beep] * times[beep];
}
else{
++nlong;
slong += times[beep];
sslong += times[beep] * times[beep];
}
}

if(nshort){
badness = sqrt((double) ssshort * nshort / (double) sshort / (double) sshort - 1.0);
}
else{
badness = 0.0;
}
if(nlong){
badness += sqrt((double) sslong * nlong / (double) slong / (double) slong - 1.0);
}

if(badness < best_badness){
best_badness = badness;
best_boundary = times[boundary];
}
}

for(beep=0; beep < beeps; beep++){
if(times[beep] <= best_boundary){
if(code[beep] != '.')
matches = false;
}
else{
if(code[beep] != '-')
matches = false;
}
}

if(matches)
c = 2000;

return matches;

}

void bell_process(void)
Expand Down