hitag signal refactoring

armsrc/Makefile

@@ -23,7 +23,7 @@ APP_CFLAGS = $(PLATFORM_DEFS) \
              -DON_DEVICE \
              -fno-strict-aliasing -ffunction-sections -fdata-sections
 
-SRC_LF = lfops.c lfsampling.c pcf7931.c lfdemod.c
+SRC_LF = lfops.c lfsampling.c pcf7931.c lfdemod.c lfadc.c
 SRC_ISO15693 = iso15693.c iso15693tools.c
 SRC_ISO14443a = iso14443a.c mifareutil.c mifarecmd.c epa.c mifaresim.c
 #UNUSED: mifaresniff.c desfire_crypto.c

armsrc/hitag2.h

@@ -14,7 +14,7 @@
 #include "common.h"
 #include "hitag.h"
 
-void SniffHitag(void);
+void SniffHitag(uint32_t type);
 void SimulateHitagTag(bool tag_mem_supplied, uint8_t *data);
 void ReaderHitag(hitag_function htf, hitag_data *htd);
 void WriterHitag(hitag_function htf, hitag_data *htd, int page);

armsrc/lfadc.c

@@ -168,7 +168,9 @@ void lf_init(bool reader) {
     AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN | AT91C_TC_SWTRG;
 
     // Prepare data trace
-    if (logging) initSampleBuffer(NULL);
+    uint32_t bufsize = 20000;
+
+    if (logging) initSampleBuffer(&bufsize);
 
 }
 

armsrc/lfsampling.c

@@ -106,17 +106,23 @@ sampling_t samples = {0, 0, 0, 0};
 
 void initSampleBuffer(uint32_t *sample_size) {
 
+    BigBuf_free();
+    BigBuf_Clear_ext(false);
+
     if (sample_size == NULL || *sample_size == 0) {
         *sample_size = BigBuf_max_traceLen();
+
+        data.buffer = BigBuf_get_addr();
+
+        memset(data.buffer, 0, *sample_size);
     } else {
         *sample_size = MIN(*sample_size, BigBuf_max_traceLen());
+
+        data.buffer = BigBuf_malloc(*sample_size);
+
+        memset(data.buffer, 0, *sample_size);
     }
 
-    // use a bitstream to handle the output
-    data.buffer = BigBuf_get_addr();
-
-    memset(data.buffer, 0, *sample_size);
-
     //
     samples.dec_counter = 0;
     samples.sum = 0;