Move SoftwareSerial buffers into DCCM area

Author: bigdinotech

libraries/CurieSoftwareSerial/src/SoftwareSerial.cpp

@@ -31,14 +31,13 @@ Rx does not work for pin 13
 // 
 // Includes
 // 
-#include <Arduino.h>
 #include <SoftwareSerial.h>
 
 //
 // Statics
 //
 SoftwareSerial *SoftwareSerial::active_object = 0;
-char SoftwareSerial::_receive_buffer[_SS_MAX_RX_BUFF]; 
+char *SoftwareSerial::_receive_buffer;
 volatile uint8_t SoftwareSerial::_receive_buffer_tail = 0;
 volatile uint8_t SoftwareSerial::_receive_buffer_head = 0;
 
@@ -231,6 +230,7 @@ SoftwareSerial::SoftwareSerial(uint32_t receivePin, uint32_t transmitPin, bool i
   _transmitPin = transmitPin;
   setRX(receivePin);
   _receivePin = receivePin;
+  _receive_buffer = (char*)dccm_malloc(_SS_MAX_RX_BUFF);
 }
 
 //

libraries/CurieSoftwareSerial/src/SoftwareSerial.h

@@ -27,7 +27,7 @@ Rx does not work for pin 13
 
 #include <inttypes.h>
 #include <Stream.h>
-
+#include <Arduino.h>
 /******************************************************************************
 * Definitions
 ******************************************************************************/
@@ -56,7 +56,7 @@ class SoftwareSerial : public Stream
   bool _inverse_logic = false;
 
   // static data
-  static char _receive_buffer[_SS_MAX_RX_BUFF]; 
+  static char *_receive_buffer;
   static volatile uint8_t _receive_buffer_tail;
   static volatile uint8_t _receive_buffer_head;
   static SoftwareSerial *active_object;