diff --git a/platform/msb430/dev/cc1020.c b/platform/msb430/dev/cc1020.c
index 095259ab6..d77573b95 100644
--- a/platform/msb430/dev/cc1020.c
+++ b/platform/msb430/dev/cc1020.c
@@ -196,6 +196,12 @@ cc1020_set_power(uint8_t pa_power)
   cc1020_pa_power = pa_power;
 }
 
+int
+cc1020_sending(void)
+{
+  return !!cc1020_txlen;
+}
+
 int
 cc1020_send(const void *buf, unsigned short len)
 {
@@ -413,7 +419,7 @@ PROCESS_THREAD(cc1020_sender_process, ev, data)
     cc1020_set_tx();
 
     // Initiate radio transfer.
-    dma_transfer(cc1020_txbuf, cc1020_txlen);
+    dma_transfer(&TXBUF0, cc1020_txbuf, cc1020_txlen);
 
     // wait for DMA0 to finish
     PROCESS_WAIT_UNTIL(ev == dma_event);
diff --git a/platform/msb430/dev/dma.c b/platform/msb430/dev/dma.c
index 2cfc13b21..e892281ae 100644
--- a/platform/msb430/dev/dma.c
+++ b/platform/msb430/dev/dma.c
@@ -99,7 +99,7 @@ dma_subscribe(int line, struct process *p)
 }
 
 void
-dma_transfer(unsigned char *buf, unsigned len)
+dma_transfer(unsigned char *dst, unsigned char *src, unsigned len)
 {
   // Configure DMA Channel 0 for UART0 TXIFG.
   DMACTL0 = DMA0TSEL_4;
@@ -119,8 +119,8 @@ dma_transfer(unsigned char *buf, unsigned len)
    */
   DMA0CTL = DMADT_0 | DMADSTINCR_0 | DMASRCINCR_3 | DMASBDB | DMALEVEL;
 
-  DMA0SA = (unsigned) buf;
-  DMA0DA = (unsigned) &TXBUF0;
+  DMA0SA = (unsigned) src;
+  DMA0DA = (unsigned) dst;
   DMA0SZ = len;
 
   DMA0CTL |= DMAEN | DMAIE;	// enable DMA and interrupts
diff --git a/platform/msb430/dev/dma.h b/platform/msb430/dev/dma.h
index 5b0ac6fb9..be7fa4804 100644
--- a/platform/msb430/dev/dma.h
+++ b/platform/msb430/dev/dma.h
@@ -28,7 +28,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: dma.h,v 1.4 2007/08/16 13:51:57 nvt-se Exp $
+ * $Id: dma.h,v 1.5 2007/11/06 15:08:56 nvt-se Exp $
  */
 
 #ifndef DMA_H
@@ -38,7 +38,7 @@
 
 void dma_init(void);
 int dma_subscribe(int, struct process *);
-void dma_transfer(unsigned char *, unsigned);
+void dma_transfer(unsigned char *, unsigned char *, unsigned);
 
 extern process_event_t dma_event;