X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fchips%2Fmsp430%2Fusci%2FMsp430SpiA0C.nc;h=b3c284f2e46912c9d30df1a4b9641b5ddc9128b8;hb=e9bfab607e051bae6afb47b44892ce37541d1b44;hp=c428bb8f0056a6aa26e16334c2a6c6f5de54745d;hpb=86e1f38f71efaa4ef35d676dde514fb9884f124e;p=tinyos-2.x.git

diff --git a/tos/chips/msp430/usci/Msp430SpiA0C.nc b/tos/chips/msp430/usci/Msp430SpiA0C.nc
index c428bb8f..b3c284f2 100644
--- a/tos/chips/msp430/usci/Msp430SpiA0C.nc
+++ b/tos/chips/msp430/usci/Msp430SpiA0C.nc
@@ -26,7 +26,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
- 
+
 /**
  * This configuration provides the interface for using USCI_A0 in its SPI
  * mode.
@@ -50,7 +50,7 @@
  *
  * @author R. Steve McKown <rsmckown@gmail.com>
  */
- 
+
 #if !defined(__MSP430_HAS_USCI_AB0__)
 #error "Target does not have a USCI_A0 peripheral (SPI)"
 #endif
@@ -65,7 +65,10 @@ generic configuration Msp430SpiA0C(uint16_t blockSize) {
     interface SpiPacket;
     interface ArbiterInfo; /* ??? */
   }
-  uses interface AsyncConfigure<const msp430_usci_spi_t*> as Configure;
+  uses {
+    interface AsyncConfigure<const msp430_usci_spi_t*> as Configure;
+    interface GeneralIO as CSn;	/* wire only if a SPI slave only */
+  }
 }
 implementation {
   enum {
@@ -76,6 +79,7 @@ implementation {
   SpiByte = SpiP;
   SpiPacket = SpiP;
   Configure = SpiP;
+  CSn = SpiP;
 
   components Msp430UsciA0C as UsciC;
   Resource = UsciC.Resource[CLIENT_ID];