From d8d233ad3e4513cb5378dca459c251e0a127e129 Mon Sep 17 00:00:00 2001 From: "David A. Mellis" Date: Sat, 5 Mar 2011 14:17:26 -0500 Subject: Implemented serial transmit buffering. Now Serial.write() places characters in the transmit buffer, and the data register empty interrupt reads and transmit them. Based loosely on the implementation here: ftp://wookey.org.uk/arduino. http://code.google.com/p/arduino/issues/detail?id=262 --- cores/arduino/HardwareSerial.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'cores/arduino/HardwareSerial.h') diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h index 3efa775..d229373 100644 --- a/cores/arduino/HardwareSerial.h +++ b/cores/arduino/HardwareSerial.h @@ -32,6 +32,7 @@ class HardwareSerial : public Stream { private: ring_buffer *_rx_buffer; + ring_buffer *_tx_buffer; volatile uint8_t *_ubrrh; volatile uint8_t *_ubrrl; volatile uint8_t *_ucsra; @@ -40,14 +41,14 @@ class HardwareSerial : public Stream uint8_t _rxen; uint8_t _txen; uint8_t _rxcie; - uint8_t _udre; + uint8_t _udrie; uint8_t _u2x; public: - HardwareSerial(ring_buffer *rx_buffer, + HardwareSerial(ring_buffer *rx_buffer, ring_buffer *tx_buffer, volatile uint8_t *ubrrh, volatile uint8_t *ubrrl, volatile uint8_t *ucsra, volatile uint8_t *ucsrb, volatile uint8_t *udr, - uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x); + uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x); void begin(long); void end(); virtual int available(void); -- cgit v1.2.3-18-g5258