samples to skip (unint32_t)

Use unit32_t for all samples to skip

CHANGELOG.md

@@ -357,7 +357,8 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
  - Fix T55xx config getting displayed when using password when no password needed on read. (@mwalker33)
  - Fix `em 4x05_dump` to print all blocks read (@mwalker33)
  - Added save to .eml and .bin for `em 4x05_dump` (@mwalker33)
-
+ - Added `s` <samples to skip> to `lf config` / `lf sniff` to skip samples when sniffing (@mwalker33)
+ 
 ### Fixed
  - Changed driver file proxmark3.inf to support both old and new Product/Vendor IDs (@pwpiwi)
  - Changed start sequence in Qt mode (fix: short commands hangs main Qt thread) (@merlokk)

armsrc/lfsampling.c

@@ -51,8 +51,9 @@ void setSamplingConfig(sample_config *sc) {
     if (sc->divisor != 0) config.divisor = sc->divisor;
     if (sc->bits_per_sample != 0) config.bits_per_sample = sc->bits_per_sample;
     if (sc->trigger_threshold != -1) config.trigger_threshold = sc->trigger_threshold;
-    if (sc->samples_to_skip != -1) config.samples_to_skip = sc->samples_to_skip;
+//    if (sc->samples_to_skip == 0xffffffff) // if needed to not update if not supplied 
 
+    config.samples_to_skip = sc->samples_to_skip;
     config.decimation = (sc->decimation != 0) ? sc->decimation : 1;
     config.averaging = sc->averaging;
     if (config.bits_per_sample > 8) config.bits_per_sample = 8;
@@ -126,7 +127,7 @@ void LFSetupFPGAForADC(int divisor, bool lf_field) {
  * @param silent - is true, now outputs are made. If false, dbprints the status
  * @return the number of bits occupied by the samples.
  */
-uint32_t DoAcquisition(uint8_t decimation, uint32_t bits_per_sample, bool averaging, int trigger_threshold, bool silent, int bufsize, uint32_t cancel_after, int samples_to_skip) {
+uint32_t DoAcquisition(uint8_t decimation, uint32_t bits_per_sample, bool averaging, int trigger_threshold, bool silent, int bufsize, uint32_t cancel_after, uint32_t samples_to_skip) {
 
     uint8_t *dest = BigBuf_get_addr();
     bufsize = (bufsize > 0 && bufsize < BigBuf_max_traceLen()) ? bufsize : BigBuf_max_traceLen();

client/cmdlf.c

@@ -400,7 +400,7 @@ int CmdLFSetConfig(const char *Cmd) {
     bool errors = false;
     int trigger_threshold = -1;//Means no change
     uint8_t unsigned_trigg = 0;
-    int samples_to_skip = -1;
+    uint32_t samples_to_skip = 0; // will return offset to 0 if not supplied.  Could set to 0xffffffff if needed to not update
 
 
     uint8_t cmdp = 0;

include/pm3_cmd.h

@@ -118,7 +118,7 @@ typedef struct {
     bool averaging;
     int divisor;
     int trigger_threshold;
-    int samples_to_skip;
+    uint32_t samples_to_skip;
 } PACKED sample_config;
 /*
 typedef struct {