RfidResearchGroup/proxmark3
1
1
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-02-13 10:43:01 +08:00
Code Issues Projects Releases Packages Wiki Activity

..and the AskEdgeDetect

Browse source
This commit is contained in:
iceman1001 2017-07-28 00:50:27 +02:00
parent 86237b629f
commit bee9e986f1
2 changed files with 17 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
client/cmddata.c
View file

@ -1020,6 +1020,18 @@ int CmdGraphShiftZero(const char *Cmd)
return 0;
}
int AskEdgeDetect(const int *in, int *out, int len, int threshold) {
int last = 0;
for(int i = 1; i<len; i++) {
if (in[i]-in[i-1] >= threshold) //large jump up
last = 127;
else if(in[i]-in[i-1] <= -1 * threshold) //large jump down
last = -127;
out[i-1] = last;
}
return 0;
}
//by marshmellow
//use large jumps in read samples to identify edges of waves and then amplify that wave to max
//similar to dirtheshold, threshold commands
@ -1027,19 +1039,12 @@ int CmdGraphShiftZero(const char *Cmd)
int CmdAskEdgeDetect(const char *Cmd)
{
int thresLen = 25;
int last = 0;
int ans = 0;
sscanf(Cmd, "%i", &thresLen);
for(int i = 1; i < GraphTraceLen; ++i){
if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
last = 127;
else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
last = -127;
GraphBuffer[i-1] = last;
}
ans = AskEdgeDetect(GraphBuffer, GraphBuffer, GraphTraceLen, thresLen);
RepaintGraphWindow();
return 0;
return ans;
}
/* Print our clock rate */

2
client/cmddata.h
View file

@ -78,6 +78,8 @@ int getSamples(const char *Cmd, bool silent);
void setGrid_Clock(uint8_t clock);
int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down);
extern int AskEdgeDetect(const int *in, int *out, int len, int threshold);
int CmdDataIIR(const char *Cmd);
#define MAX_DEMOD_BUF_LEN (1024*128)