X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0472d76de484018f2d11425417f3078a08a2e3d3..a36b278fadd47997b4d8e69dfeb4a126aa1932ee:/armsrc/hfsnoop.c?ds=inline

diff --git a/armsrc/hfsnoop.c b/armsrc/hfsnoop.c
index 5338bd0d..d06af443 100644
--- a/armsrc/hfsnoop.c
+++ b/armsrc/hfsnoop.c
@@ -2,14 +2,14 @@
 #include "apps.h"
 #include "BigBuf.h"
 #include "util.h"
+#include "usb_cdc.h"	// for usb_poll_validate_length
 
 static void RAMFUNC optimizedSnoop(void);
 
 static void RAMFUNC optimizedSnoop(void)
 {
-	BigBuf_free();
 	int n = BigBuf_max_traceLen() / sizeof(uint16_t); // take all memory
-        
+
 	uint16_t *dest = (uint16_t *)BigBuf_get_addr();
 	uint16_t *destend = dest + n;
 
@@ -20,18 +20,20 @@ static void RAMFUNC optimizedSnoop(void)
 		if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)
 		{
 			*dest = (uint16_t)(AT91C_BASE_SSC->SSC_RHR);
-			dest = dest + 1;
+			dest++;
 		}
 	}
 	//Resetting Frame mode (First set in fpgaloader.c)
-	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0); 
+	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
 }
 
 void HfSnoop(int samplesToSkip, int triggersToSkip)
 {
+	BigBuf_free(); BigBuf_Clear();
+	
 	Dbprintf("Skipping first %d sample pairs, Skipping %d triggers.\n", samplesToSkip, triggersToSkip);
-	bool trigger_cnt;
-	LED_D_OFF();
+	int trigger_cnt;
+	LED_D_ON();
 	// Select correct configs
 	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 	// Set up the synchronous serial port
@@ -42,32 +44,32 @@ void HfSnoop(int samplesToSkip, int triggersToSkip)
 	SpinDelay(100);
 
 	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16); // Setting Frame Mode For better performance on high speed data transfer.
-  
+
 	trigger_cnt = 0;
-	uint16_t r;
-	for(;;) {
+	uint16_t r = 0;
+	while(!BUTTON_PRESS() && !usb_poll_validate_length()) {
+		WDT_HIT();
 		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
 			r = (uint16_t)AT91C_BASE_SSC->SSC_RHR;
-			if (!(trigger_cnt == triggersToSkip) && ( (r >> 8) >= 240))
-			{
-				Dbprintf("Trigger kicked! Value: %d.", r >> 8);
-				trigger_cnt++;
-				break;
-			}
+			r = MAX(r & 0xff, r >> 8); 
+			if (r >= 240) {
+				if (++trigger_cnt > triggersToSkip)
+					break;
+			} 
 		}
 	}
-	Dbprintf("Trigger kicked! Value: %d, Dumping Samples Hispeed now.", r >> 8);
-	int waitcount = samplesToSkip; // lets wait 40000 ticks of pck0
-	while(waitcount != 0) {
-		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
-			waitcount--;
+
+	if(!BUTTON_PRESS()) {
+		int waitcount = samplesToSkip; // lets wait 40000 ticks of pck0
+		while(waitcount != 0) {
+			if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY))
+				waitcount--;
 		}
+		optimizedSnoop();
+		Dbprintf("Trigger kicked! Value: %d, Dumping Samples Hispeed now.", r);
 	}
 
-	// Snooooop!!!
-	optimizedSnoop();
-
-	DbpString("Done.");
+	DbpString("HF Snoop end");
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LED_D_OFF();
 }