expose clock divider of tda5250, add a component that uses this as an input to

SMCLK -- use with caution.

diff --git a/tos/chips/tda5250/ClkDiv.nc b/tos/chips/tda5250/ClkDiv.nc
new file mode 100644 (file)
index 0000000..7209c8c
--- /dev/null
+++ b/tos/chips/tda5250/ClkDiv.nc
@@ -0,0 +1,62 @@
+/* -*- mode:c++; indent-tabs-mode: nil -*-
+ * Copyright (c) 2007, Technische Universitaet Berlin
+ * 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 Technische Universitaet Berlin 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.
+ *
+ * $Revision$
+ * $Date$
+ */
+
+/**
+ * This radio provides a clock divider output that can be used to drive 
+ * a high frequency clock of an micro processor. 
+ * @author: Andreas Koepke <koepke@tkn.tu-berlin.de>
+ */
+
+interface ClkDiv {
+    /**
+     * this event signals that the clkdiv delivers a stable signal
+     */
+    async event void startDone();
+
+    /**
+     * this event signals that the clkdiv will stop to deliver a stable signal
+     */
+    async event void stopping();
+
+    /**
+     * From now on, never switch the clkdiv off -- consumes more energy!
+     * This command may take a while until it takes effect.
+     */
+    // command void alwaysOnMode();
+
+    /**
+     * Return to default mode: clkdiv is switched on when the radio demands
+     * it, other components will get the start/stop events and hence know what
+     * is going on now.
+     */
+    // command void sporadicMode();
+}

diff --git a/tos/chips/tda5250/Tda5250RadioC.nc b/tos/chips/tda5250/Tda5250RadioC.nc
index 4e2b46e47a73f02c66388142798c7d3e1f65f6d2..0989c774a44e78abef46478fd7b375a35add3dea 100644 (file)
--- a/tos/chips/tda5250/Tda5250RadioC.nc
+++ b/tos/chips/tda5250/Tda5250RadioC.nc
@@ -46,6 +46,7 @@ configuration Tda5250RadioC {
     interface Tda5250Control;
     interface ResourceRequested;
     interface RadioByteComm;
+    interface ClkDiv;
   }
 }
 implementation {
@@ -63,6 +64,7 @@ implementation {
   ResourceRequested = Tda5250RadioP;
   RadioByteComm = Tda5250RadioP;
   SplitControl = Tda5250RadioP;
+  ClkDiv = Tda5250RadioP;
 
   Tda5250RadioP.DelayTimer -> DelayTimer;
   

diff --git a/tos/chips/tda5250/Tda5250RadioP.nc b/tos/chips/tda5250/Tda5250RadioP.nc
index 20d39dcf9e563cbb0650354613aac7349a2b89f3..9b82771c9f92c34a7bbb20a03a2f709a140cea07 100644 (file)
--- a/tos/chips/tda5250/Tda5250RadioP.nc
+++ b/tos/chips/tda5250/Tda5250RadioP.nc
@@ -54,6 +54,7 @@ module Tda5250RadioP {
         interface Tda5250Control;
         interface RadioByteComm;
         interface ResourceRequested;
+        interface ClkDiv;
     }
     uses {
         interface HplTda5250Config;
@@ -86,6 +87,7 @@ implementation {
 
     /**************** Radio Start  *****************/
     task void startDoneTask() {
+        signal ClkDiv.startDone();
         signal SplitControl.startDone(SUCCESS);
     }
       
@@ -135,18 +137,22 @@ implementation {
         switch(mode) {
             case RADIO_MODE_ON_TRANSITION:
                 call HplTda5250Config.reset();
+                // call HplTda5250Config.SetRFPower(240);
+                // call HplTda5250Config.SetClockOnDuringPowerDown();
                 call HplTda5250Config.SetRFPower(255);
                 call ConfigResource.release();
                 atomic radioMode = RADIO_MODE_ON;
                 post startDoneTask();
                 break;
             case RADIO_MODE_OFF_TRANSITION:
+                signal ClkDiv.stopping();
                 call HplTda5250Config.SetSleepMode();
                 call ConfigResource.release();
                 atomic radioMode = RADIO_MODE_OFF;
                 post stopDoneTask();
                 break;
             case RADIO_MODE_SLEEP_TRANSITION:
+                signal ClkDiv.stopping();
                 call HplTda5250Config.SetSlaveMode();
                 call HplTda5250Config.SetSleepMode();
                 atomic radioMode = RADIO_MODE_SLEEP;
@@ -405,6 +411,7 @@ implementation {
             signal Tda5250Control.RssiStable();
             break;
           case RECEIVER_DELAY :
+              signal ClkDiv.startDone();
             delayTimer = RSSISTABLE_DELAY;
             call DelayTimer.start(TDA5250_RSSI_STABLE_TIME-TDA5250_RECEIVER_SETUP_TIME);
             if (call DataResource.immediateRequest() == SUCCESS) {
@@ -414,6 +421,7 @@ implementation {
             }
             break;
           case TRANSMITTER_DELAY :
+              signal ClkDiv.startDone();
             if (call DataResource.immediateRequest() == SUCCESS) {
               switchDataResource();
             } else {
@@ -443,4 +451,8 @@ implementation {
       }
       default async event void RadioByteComm.txByteReady(error_t error) {
       }
+      default async event void ClkDiv.startDone() {
+      }
+      default async event void ClkDiv.stopping() {
+      }
 }