X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/09ffd16ee2d0d6d43fc562035487226cf4f58b86..5f605b8fc859f495ecf25184fbee9f8eca1f96d2:/armsrc/iso14443b.c

diff --git a/armsrc/iso14443b.c b/armsrc/iso14443b.c
index 33c047d8..10b9e953 100644
--- a/armsrc/iso14443b.c
+++ b/armsrc/iso14443b.c
@@ -1200,16 +1200,18 @@ void SendRawCommand14443B(uint32_t datalen, uint32_t recv, uint8_t powerfield, u
 	SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
 	FpgaSetupSsc();
 
-	set_tracing(TRUE);
-	
-	CodeAndTransmit14443bAsReader(data, datalen);
+	if (datalen){
+		set_tracing(TRUE);
+		
+		CodeAndTransmit14443bAsReader(data, datalen);
+
+		if(recv) {
+			GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, TRUE);
+			uint16_t iLen = MIN(Demod.len, USB_CMD_DATA_SIZE);
+			cmd_send(CMD_ACK, iLen, 0, 0, Demod.output, iLen);
+		}
+	} 
 
-	if(recv) {
-		GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, TRUE);
-		uint16_t iLen = MIN(Demod.len, USB_CMD_DATA_SIZE);
-		cmd_send(CMD_ACK, iLen, 0, 0, Demod.output, iLen);
-	}
-	
 	if(!powerfield) {
 		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 		LED_D_OFF();