syntax sugar

[proxmark3-svn] / armsrc / fpgaloader.c

diff --git a/armsrc/fpgaloader.c b/armsrc/fpgaloader.c
index 64ddc608dcd6925e9ced586eafdc1b394e1cfd37..a1011ab7c3fccf635520eb8f1ae6cfbb27ff8f12 100644 (file)
--- a/armsrc/fpgaloader.c
+++ b/armsrc/fpgaloader.c
@@ -117,8 +117,7 @@ void SetupSpi(int mode)
 // Set up the synchronous serial port, with the one set of options that we
 // always use when we are talking to the FPGA. Both RX and TX are enabled.
 //-----------------------------------------------------------------------------
-void FpgaSetupSsc(void)
-{
+void FpgaSetupSscExt(uint8_t clearPCER) {
        // First configure the GPIOs, and get ourselves a clock.
        AT91C_BASE_PIOA->PIO_ASR =
                GPIO_SSC_FRAME  |
@@ -127,7 +126,10 @@ void FpgaSetupSsc(void)
                GPIO_SSC_CLK;
        AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
 
-       AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SSC);
+       if ( clearPCER )
+               AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SSC);
+       else
+               AT91C_BASE_PMC->PMC_PCER |= (1 << AT91C_ID_SSC);
 
        // Now set up the SSC proper, starting from a known state.
        AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
@@ -149,25 +151,24 @@ void FpgaSetupSsc(void)
 
        AT91C_BASE_SSC->SSC_CR = AT91C_SSC_RXEN | AT91C_SSC_TXEN;
 }
-
+void FpgaSetupSsc(void) {
+       FpgaSetupSscExt(TRUE);
+}
 //-----------------------------------------------------------------------------
 // Set up DMA to receive samples from the FPGA. We will use the PDC, with
 // a single buffer as a circular buffer (so that we just chain back to
 // ourselves, not to another buffer). The stuff to manipulate those buffers
 // is in apps.h, because it should be inlined, for speed.
 //-----------------------------------------------------------------------------
-bool FpgaSetupSscDma(uint8_t *buf, int len)
-{
-       if (buf == NULL)
-        return false;
-
+bool FpgaSetupSscDma(uint8_t *buf, int len) {
+       if (buf == NULL) return false;
+       
        AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;        // Disable DMA Transfer
        AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf;           // transfer to this memory address
        AT91C_BASE_PDC_SSC->PDC_RCR = len;                                      // transfer this many bytes
        AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf;          // next transfer to same memory address
        AT91C_BASE_PDC_SSC->PDC_RNCR = len;                                     // ... with same number of bytes
-       AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;         // go!
-    
+       AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;         // go!    
     return true;
 }