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-While the power managers presented in this tutorial are powerful components for providing power management of shared resources, they are not the only power management mechanisms provided by TinyOS. Microcontroller power management is also preformed as outlined in TEP115. Whenever the task queue empties, the lowest power state that the microcontroller is capapble of dropping to is automatically calculated and then switched to. In this way, the user is not burdened with explicity controlling these power states. The cc1000 and cc2420 radio implementations also provide "Low Power Listening" (LPL) interfaces for controlling their duty cycles. Although the LPL interface used by each radio stack differs somewhat, they are both able to provide energy savings not achieveable through other means. The LPL implementation for the cc2420 can be found under <tt>tinyos-2.x/tos/chips/cc2420</tt> and the LPL implementation for the cc1000 can be found under <tt>tinyos-2.x/tos/chips/cc1000</tt>. As these interfaces begin to mature and merge into one, this tutorial will be updated appropriately to accomodate the change.\r
+While the power managers presented in this tutorial are powerful components for providing power management of shared resources, they are not the only power management mechanisms provided by TinyOS. Microcontroller power management is also preformed as outlined in TEP115. Whenever the task queue empties, the lowest power state that the microcontroller is capable of dropping to is automatically calculated and then switched to. In this way, the user is not burdened with explicity controlling these power states. The cc1000 and cc2420 radio implementations also provide "Low Power Listening" (LPL) interfaces for controlling their duty cycles. The LPL implementation for the cc2420 can be found under <tt>tinyos-2.x/tos/chips/cc2420</tt> and the LPL implementation for the cc1000 can be found under <tt>tinyos-2.x/tos/chips/cc1000</tt>. Take a look \r
+at <a href=lesson16.html>lesson 16</a> to see how this interface is used.\r
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