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digistump-avr/cores/pro/TinySoftwareSerial.h

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+
+#if USE_SOFTWARE_SERIAL 
+#ifndef TinySoftwareSerial_h
+#define TinySoftwareSerial_h
+#include <inttypes.h>
+#include "Stream.h"
+
+#if !defined(ACSR) && defined(ACSRA)
+#define ACSR ACSRA
+#endif
+
+#if (RAMEND < 250)
+  #define SERIAL_BUFFER_SIZE 8
+#elif (RAMEND < 500)
+  #define SERIAL_BUFFER_SIZE 16
+#elif (RAMEND < 1000)
+  #define SERIAL_BUFFER_SIZE 32
+#else
+  #define SERIAL_BUFFER_SIZE 128
+#endif
+struct soft_ring_buffer
+{
+  unsigned char buffer[SERIAL_BUFFER_SIZE];
+  int head;
+  int tail;
+};
+
+extern "C"{
+  void uartDelay() __attribute__ ((naked));
+  uint8_t getch();
+  void store_char(unsigned char c, soft_ring_buffer *buffer);
+}
+
+class TinySoftwareSerial : public Stream
+{
+  public: //should be private but needed by extern "C" {} functions.
+	uint8_t _rxmask;
+	uint8_t _txmask;
+	uint8_t _txunmask;
+	soft_ring_buffer *_rx_buffer;
+	uint8_t _delayCount;
+  public:
+    TinySoftwareSerial(soft_ring_buffer *rx_buffer, uint8_t txBit, uint8_t rxBit);
+    void begin(long);
+    void end();
+    virtual int available(void);
+    virtual int peek(void);
+    virtual int read(void);
+    virtual void flush(void);
+    virtual size_t write(uint8_t);
+    using Print::write; // pull in write(str) and write(buf, size) from Print
+    operator bool();
+};
+
+#if (!defined(UBRRH) && !defined(UBRR0H)) || USE_SOFTWARE_SERIAL
+  extern TinySoftwareSerial Serial;
+#endif
+
+//extern void putch(uint8_t);
+#endif
+#endif