Storm Interface Nav-Pad, Техническое руководство

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NavPad ™
Technical Manual
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NavPad - Technical Manual Rev 2.2
www.storm-interface.com Page 47 of 64
SetLedLevel
This function sets the brightness of the LED. The led level can be set with values 0 to 9.
Parameters :
Int ledLevel
timeToWait - maximum time to wait for command to complete
Return Value:
0 for success
///\brief SetLedLevel This function sets led brightness level from 0 to 9,
where 0 is off
/// and 9 is on.
///\param ledLevel used to set led level
///\param _timeToWait is the time in milliseconds to wait for the data to be
retrieved.
///\return 0 on success, negative error code on failure
/// Possible error codes are:
/// DEVICE_INFO_STRUCTURE_NULL = User app passed in NULL
pointer for DEVICE_INFO structure
/// NO_USB_DISPLAY_CONNECTED = No keypad is
connected so cannot retrieve info
/// REQUEST_TIMEOUT = Could not retrieve the
info in the time alloted.
///
DLLDEF int SetLedLevel( int ledLevel, int
_timeToWait );