msp430 usci: TX operations via DMA

[tinyos-2.x.git] / tos / chips / msp430 / usci / Msp430UartDmaA1C.nc

diff --git a/tos/chips/msp430/usci/Msp430UartDmaA1C.nc b/tos/chips/msp430/usci/Msp430UartDmaA1C.nc
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+/*
+ * Copyright (c) 2008, Titanium Mirror, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - Neither the name of the Titanium Mirror, Inc. nor the names
+ *   of its contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (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_A1 in its UART
+ * mode.
+ *
+ * @author R. Steve McKown <rsmckown@gmail.com>
+ */
+
+#if !defined(__MSP430_HAS_USCI_AB0__)
+#error "Target does not have a USCI_A1 peripheral (UART)"
+#endif
+
+#include "Msp430Usci.h"
+
+generic configuration Msp430UartDmaA1C() {
+  provides {
+    interface Resource;
+    interface ResourceRequested;
+    interface UartStream;
+    interface UartByte;
+    interface ArbiterInfo; /* ??? */
+  }
+  uses interface AsyncConfigure<const msp430_usci_uart_t*> as Configure;
+}
+implementation {
+  enum {
+    CLIENT_ID = unique(MSP430_USCIA1_RESOURCE)
+  };
+
+  components new Msp430UartDmaP(UCA1TXBUF_, DMA0TSEL_10) as UartP;
+  UartStream = UartP;
+  UartByte = UartP;
+  Configure = UartP;
+
+  components Msp430UsciA1C as UsciC;
+  Resource = UsciC.Resource[CLIENT_ID];
+  ResourceRequested = UsciC.ResourceRequested[CLIENT_ID];
+  ArbiterInfo = UsciC.ArbiterInfo;
+  UartP -> UsciC.Registers;
+  UartP -> UsciC.Interrupts[CLIENT_ID];
+  UartP -> UsciC.ArbiterInfo;
+  UsciC.ResourceConfigure[CLIENT_ID] -> UartP;
+
+  components HplMsp430GeneralIOC as IOC;
+  UartP.RXD -> IOC.UCA1RXD;
+  UartP.TXD -> IOC.UCA1TXD;
+
+  components Msp430DmaC as DmaC;
+  UartP.DmaChannel -> DmaC.Channel0;
+}