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Task switch by
1) Interupt occur, most of RTOS using timer interrupt for schedule the task, when timer interrupt occur and others high priority task are ready to run it will make a task switch.
2) Calling OS API function, example call OSTimeDly currently running task will be block and kernel...
fan dimmer using 8051
We are call this method " Phase controller ", by you must have a reference signal from AC source 50Hz or 60Hz, the connect this signal to your microcontroller external interrupt pin for reference to make the phase control signal. Using the timer to on and off the control...
remote controlling 2051
Using an external interrupt plus one timer. By start and stop timer counting when the IR signal come to the external interrupt pin.
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