Return a real error code and actual bytes written in SpiPacket.sendDone.

Be careful with this one.  The usart SPI peripheral always returned the length
it was given and an error of SUCCESS, so this could create some regressions.

diff --git a/tos/chips/msp430/usci/Msp430SpiP.nc b/tos/chips/msp430/usci/Msp430SpiP.nc
index 0aaf9bd34c06c17784a526fa9c4d1aa7675d8537..b040053a252738a6eead2df2af4a9aaace7a1bbe 100644 (file)
--- a/tos/chips/msp430/usci/Msp430SpiP.nc
+++ b/tos/chips/msp430/usci/Msp430SpiP.nc
@@ -164,9 +164,10 @@ implementation {
   task void signalSendDone()
   {
     atomic {
-      uint16_t len = m_len;
+      error_t error = (m_pos == m_len) ? SUCCESS : FAIL;
+
       m_len = 0;
-      signal SpiPacket.sendDone(m_txBuf, m_rxBuf, len, SUCCESS);
+      signal SpiPacket.sendDone(m_txBuf, m_rxBuf, m_pos, error);
     }
   }