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Some more fixes to longer lf recordings. Now also supports longer snoops, and an additional command 'lf config' has been defined, instead of having to specify all params for every call

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This commit is contained in:
Martin Holst Swende 2015-01-30 23:03:44 +01:00
commit 31abe49fd3
10 changed files with 518 additions and 323 deletions
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25
client/cmddata.c
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@ -21,6 +21,8 @@
#include "cmdmain.h"
#include "cmddata.h"
#include "lfdemod.h"
#include "usb_cmd.h"
uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
int DemodBufferLen;
static int CmdHelp(const char *Cmd);
@ -1077,11 +1079,15 @@ uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
int CmdSamples(const char *Cmd)
{
uint8_t got[40000];
//If we get all but the last byte in bigbuf,
// we don't have to worry about remaining trash
// in the last byte in case the bits-per-sample
// does not line up on byte boundaries
uint8_t got[40000-1];
int n = strtol(Cmd, NULL, 0);
if (n == 0)
n = 20000;
n = sizeof(got);
if (n > sizeof(got))
n = sizeof(got);
@ -1091,14 +1097,22 @@ int CmdSamples(const char *Cmd)
PrintAndLog("Data fetched");
UsbCommand response;
WaitForResponse(CMD_ACK, &response);
uint8_t bits_per_sample = response.arg[0];
PrintAndLog("Samples packed at %d bits per sample", bits_per_sample);
uint8_t bits_per_sample = 8;
//Old devices without this feature would send 0 at arg[0]
if(response.arg[0] > 0)
{
sample_config *sc = (sample_config *) response.d.asBytes;
PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample
, sc->decimation);
bits_per_sample = sc->bits_per_sample;
}
if(bits_per_sample < 8)
{
PrintAndLog("Unpacking...");
BitstreamOut bout = { got, bits_per_sample * n, 0};
int j =0;
for (j = 0; j * bits_per_sample < n * 8 && j < GraphTraceLen; j++) {
for (j = 0; j * bits_per_sample < n * 8 && j < sizeof(GraphBuffer); j++) {
uint8_t sample = getByte(bits_per_sample, &bout);
GraphBuffer[j] = ((int) sample )- 128;
}
@ -1110,7 +1124,6 @@ int CmdSamples(const char *Cmd)
GraphBuffer[j] = ((int)got[j]) - 128;
}
GraphTraceLen = n;
}
RepaintGraphWindow();