re-add piwi's trace memory fixes

[proxmark3-svn] / armsrc / iso14443b.c

diff --git a/armsrc/iso14443b.c b/armsrc/iso14443b.c
index 33c047d8113c84aa2408c5d2eb01bf5cd1563499..10b9e953d592b9d4514a443a6856d78a4f284e2f 100644 (file)
--- 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();