-/*\r
- * Copyright (c) 2005 Arched Rock Corporation \r
- * All rights reserved. \r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions are\r
- * met:\r
- * Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * \r
- * Neither the name of the Arched Rock Corporation nor the names of its\r
- * contributors may be used to endorse or promote products derived from\r
- * this software without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\r
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\r
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\r
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARCHED\r
- * ROCK OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,\r
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,\r
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS\r
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\r
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR\r
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE\r
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH\r
- * DAMAGE.\r
- */\r
-/** \r
- * This private component provides a 16-bit BusyWait interface\r
- * of a given precision over OS Timer channel 0\r
- *\r
- * @param precision_tag A type tag mapped to the set precision\r
- *\r
- * @param val4xScale A value to scale the underlying counter by. \r
- * The passed in parameter is given by the equation\r
- * val4xScale = (3.25 MHz/<desired_precision_in_Hz>) * 4\r
- * and rounded to the nearest integer.\r
- * Example: Counter precision of 32.768 kHz would have \r
- * a val4xScale of 397\r
- * \r
- * @author Phil Buonadonna\r
- *\r
- */\r
-\r
-generic module HalPXA27xBusyWaitM(typedef precision_tag, uint16_t val4xScale)\r
-{\r
- provides interface BusyWait<precision_tag,uint16_t>;\r
- uses interface HplPXA27xOSTimer as OST;\r
-}\r
-\r
-implementation\r
-{\r
-\r
- async command void BusyWait.wait(uint16_t dt) {\r
- uint32_t dCounts;\r
- atomic {\r
- uint32_t t0 = call OST.getOSCR();\r
- dCounts = (dt * 4) * val4xScale;\r
- dCounts >>= 2;\r
- while (((call OST.getOSCR()) - t0) < dCounts);\r
- }\r
- }\r
-\r
- async event void OST.fired() {\r
- return;\r
- }\r
-\r
-}\r
+/*
+ * Copyright (c) 2005 Arched Rock Corporation
+ * 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 Arched Rock Corporation 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 ARCHED
+ * ROCK OR ITS 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 private component provides a 16-bit BusyWait interface
+ * of a given precision over OS Timer channel 0
+ *
+ * @param precision_tag A type tag mapped to the set precision
+ *
+ * @param val4xScale A value to scale the underlying counter by.
+ * The passed in parameter is given by the equation
+ * val4xScale = (3.25 MHz/<desired_precision_in_Hz>) * 4
+ * and rounded to the nearest integer.
+ * Example: Counter precision of 32.768 kHz would have
+ * a val4xScale of 397
+ *
+ * @author Phil Buonadonna
+ *
+ */
+
+generic module HalPXA27xBusyWaitM(typedef precision_tag, uint16_t val4xScale)
+{
+ provides interface BusyWait<precision_tag,uint16_t>;
+ uses interface HplPXA27xOSTimer as OST;
+}
+
+implementation
+{
+
+ async command void BusyWait.wait(uint16_t dt) {
+ uint32_t dCounts;
+ atomic {
+ uint32_t t0 = call OST.getOSCR();
+ dCounts = (dt * 4) * val4xScale;
+ dCounts >>= 2;
+ while (((call OST.getOSCR()) - t0) < dCounts);
+ }
+ }
+
+ async event void OST.fired() {
+ return;
+ }
+
+}
projects / tinyos-2.x.git / blobdiff