BeepTimer 1.0(转载)
本文内容来自：http://www.stm32circle.com/hom/index.phpDescription:（说明）
BeepTimer is a countdown timer. The user controls it by tilting the whole device and by pushing the button.
The typical usage proceeds as follows:
[*]Start the program.
[*]Tilt the device to the left or to the right to change the time interval.
[*]Push button to start the countdown. A short while after the start the screen will go off. The green LED will blink shortly every second the contdown continues.
[*]You may cancel the countdown pushing the button shortly.
[*]After the countdown ran through, the device begins to blink intensely with the red LED and to beep (because of a bug in Circle OS it is possible that there will be no sound). Push the button shortly to stop the signalling and to put the countdown into original state.
[*]At any point you may exit the program -- press the button and turn the device over at the same time.
The program is free for personal use; otherwise, feel free to contact the author through the forum (personal message is sufficient).
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