stmhal, usrsw: Update comments for new switch API.
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@ -14,19 +14,15 @@
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// Usage Model:
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//
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// pyb.switch() returns True if the user switch is pressed, False otherwise.
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//
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// pyb.switch(callback) will register a callback to be called when the user
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// switch is pressed.
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//
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// pyb.switch(None) will remove the callback.
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// sw = pyb.Switch() # create a switch object
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// sw() # get state (True if pressed, False otherwise)
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// sw.callback(f) # register a callback to be called when the
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// # switch is pressed down
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// sw.callback(None) # remove the callback
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//
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// Example:
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//
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// def switch_pressed():
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// print("User Switch pressed")
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//
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// pyb.switch(switch_pressed)
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// pyb.Switch().callback(lambda: pyb.LED(1).toggle())
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// this function inits the switch GPIO so that it can be used
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void switch_init0(void) {
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