Add RS485.sendBreak(duration) API

Author: sandeepmistry

keywords.txt

@@ -23,6 +23,7 @@ beginTransmission	KEYWORD2
 endTransmission	KEYWORD2
 receive	KEYWORD2
 noReceive	KEYWORD2
+sendBreak	KEYWORD2
 setPins	KEYWORD2
 
 #######################################

src/RS485.cpp

@@ -34,6 +34,9 @@ void RS485Class::begin(unsigned long baudrate)
 
 void RS485Class::begin(unsigned long baudrate, uint16_t config)
 {
+  _baudrate = baudrate;
+  _config = config;
+
   pinMode(_rePin, OUTPUT);
   pinMode(_dePin, OUTPUT);
 
@@ -120,6 +123,13 @@ void RS485Class::noReceive()
   digitalWrite(_rePin, HIGH);
 }
 
+void RS485Class::sendBreak(unsigned int duration)
+{
+  _serial->end();
+  delay(duration);
+  _serial->begin(_baudrate, _config);
+}
+
 void RS485Class::setPins(int rePin, int dePin)
 {
   _rePin = rePin;

src/RS485.h

@@ -45,6 +45,8 @@ class RS485Class : public HardwareSerial {
     void receive();
     void noReceive();
 
+    void sendBreak(unsigned int duration);
+
     void setPins(int rePin, int dePin);
 
   private:
@@ -53,6 +55,8 @@ class RS485Class : public HardwareSerial {
     int _dePin;
 
     bool _transmisionBegun;
+    unsigned long _baudrate;
+    uint16_t _config;
 };
 
 extern RS485Class RS485;