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Made the call to init() in DFRobotDFPlayerMini::begin() optional.

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Ratio: calling init() after the module is initially powered on is not necessary
and leads a) to an additional startup latency and b) (more annoying) to a loud
"plop" sound on the speaker output of the DFPlayerMini module.

By adding an optional parameter doReset to the begin() method, the user can now
decide, if the reset should be peformed.  Default is true, which is same
behaviour as now (i.e. perform reset()).
This commit is contained in:
Jan Delgado
2017-06-13 15:45:19 +02:00
committed by jdelgado
parent 31d5ec18d6
commit 20343d62ed
2 changed files with 14 additions and 7 deletions
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19
DFRobotDFPlayerMini.cpp
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@@ -88,7 +88,7 @@ bool DFRobotDFPlayerMini::waitAvailable(){
return _handleType != TimeOut;
}
bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK){
bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK, bool doReset){
if (isACK) {
enableACK();
}
@@ -97,11 +97,18 @@ bool DFRobotDFPlayerMini::begin(Stream &stream, bool isACK){
}
_serial = &stream;
_timeOutDuration += 3000;
reset();
waitAvailable();
_timeOutDuration -= 3000;
delay(200);
if (doReset) {
_timeOutDuration += 3000;
reset();
waitAvailable();
_timeOutDuration -= 3000;
delay(200);
} else {
// assume same state as with reset(): online
_handleType = DFPlayerCardOnline;
}
return (readType() == DFPlayerCardOnline) || !isACK;
}