-Fixed a bug in iso14_apdu

[proxmark3-svn] / armsrc / fpgaloader.c

diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c
index 50a6521dcd9fda0302c073bfe1fea0704668b0a7..c199b9a86f4b84f24c8e0b39e90b84cffb9ec9d8 100644 (file)
--- a/armsrc/fpgaloader.c
+++ b/armsrc/fpgaloader.c
@@ -1,9 +1,14 @@
 //-----------------------------------------------------------------------------
+// Jonathan Westhues, April 2006
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
 // Routines to load the FPGA image, and then to configure the FPGA's major
 // mode once it is configured.
-//
-// Jonathan Westhues, April 2006
 //-----------------------------------------------------------------------------
+
 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
@@ -133,11 +138,16 @@ void FpgaSetupSsc(void)
 //-----------------------------------------------------------------------------
 void FpgaSetupSscDma(uint8_t *buf, int len)
 {
+       AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
+       
        AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf;
        AT91C_BASE_PDC_SSC->PDC_RCR = len;
        AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf;
        AT91C_BASE_PDC_SSC->PDC_RNCR = len;
-       AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;
+       
+       if (buf != NULL) {
+               AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;
+       }
 }
 
 static void DownloadFPGA_byte(unsigned char w)