Hallo zusammen,
was möchte mir andurio mir damit sagen?
ich fange erst an mit selber board bauen, und muss zugeben aller anfang ist schwer.
core.a(HardwareSerial.cpp.o): In function `__vector_19':
H:\software\arduino-1.0-windows\arduino-1.0\hardware\arduino\cores\arduino/HardwareSerial.cpp:192: multiple definition of `__vector_19'
Klar ein " multiple definition of `__vector_19'" in der hardwareserial.ccp
aber was ist den vactor_19?
hier mal die hardwareserial.ccp
/*
HardwareSerial.cpp - Hardware serial library for Wiring
Copyright (c) 2006 Nicholas Zambetti. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Modified 23 November 2006 by David A. Mellis
Modified 28 September 2010 by Mark Sproul
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "Arduino.h"
#include "wiring_private.h"
// this next line disables the entire HardwareSerial.cpp,
// this is so I can support Attiny series and any other chip without a uart
#if defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H)
#include "HardwareSerial.h"
// Define constants and variables for buffering incoming serial data. We're
// using a ring buffer (I think), in which head is the index of the location
// to which to write the next incoming character and tail is the index of the
// location from which to read.
#if (RAMEND < 1000)
#define SERIAL_BUFFER_SIZE 16
#else
#define SERIAL_BUFFER_SIZE 64
#endif
struct ring_buffer
{
unsigned char buffer[SERIAL_BUFFER_SIZE];
volatile int head;
volatile int tail;
};
#if defined(USBCON)
ring_buffer rx_buffer = { { 0 }, 0, 0};
ring_buffer tx_buffer = { { 0 }, 0, 0};
#endif
#if defined(UBRRH) || defined(UBRR0H)
ring_buffer rx_buffer = { { 0 }, 0, 0 };
ring_buffer tx_buffer = { { 0 }, 0, 0 };
#endif
#if defined(UBRR1H)
ring_buffer rx_buffer1 = { { 0 }, 0, 0 };
ring_buffer tx_buffer1 = { { 0 }, 0, 0 };
#endif
#if defined(UBRR2H)
ring_buffer rx_buffer2 = { { 0 }, 0, 0 };
ring_buffer tx_buffer2 = { { 0 }, 0, 0 };
#endif
#if defined(UBRR3H)
ring_buffer rx_buffer3 = { { 0 }, 0, 0 };
ring_buffer tx_buffer3 = { { 0 }, 0, 0 };
#endif
inline void store_char(unsigned char c, ring_buffer *buffer)
{
int i = (unsigned int)(buffer->head + 1) % SERIAL_BUFFER_SIZE;
// if we should be storing the received character into the location
// just before the tail (meaning that the head would advance to the
// current location of the tail), we're about to overflow the buffer
// and so we don't write the character or advance the head.
if (i != buffer->tail) {
buffer->buffer[buffer->head] = c;
buffer->head = i;
}
}
#if !defined(USART0_RX_vect) && defined(USART1_RX_vect)
// do nothing - on the 32u4 the first USART is USART1
#else
#if !defined(USART_RX_vect) && !defined(SIG_USART0_RECV) && \
!defined(SIG_UART0_RECV) && !defined(USART0_RX_vect) && \
!defined(SIG_UART_RECV)
#error "Don't know what the Data Received vector is called for the first UART"
#else
void serialEvent() __attribute__((weak));
void serialEvent() {}
#define serialEvent_implemented
#if defined(USART_RX_vect)
SIGNAL(USART_RX_vect)
#elif defined(SIG_USART0_RECV)
SIGNAL(SIG_USART0_RECV)
#elif defined(SIG_UART0_RECV)
SIGNAL(SIG_UART0_RECV)
#elif defined(USART0_RX_vect)
SIGNAL(USART0_RX_vect)
#elif defined(SIG_UART_RECV)
SIGNAL(SIG_UART_RECV)
#endif
{
#if defined(UDR0)
unsigned char c = UDR0;
#elif defined(UDR)
unsigned char c = UDR;
#else
#error UDR not defined
#endif
store_char(c, &rx_buffer);
}
#endif
#endif
#if defined(USART1_RX_vect)
void serialEvent1() __attribute__((weak));
void serialEvent1() {}
#define serialEvent1_implemented
SIGNAL(USART1_RX_vect)
{
unsigned char c = UDR1;
store_char(c, &rx_buffer1);
}
#elif defined(SIG_USART1_RECV)
#error SIG_USART1_RECV
#endif
#if defined(USART2_RX_vect) && defined(UDR2)
void serialEvent2() __attribute__((weak));
void serialEvent2() {}
#define serialEvent2_implemented
SIGNAL(USART2_RX_vect)
{
unsigned char c = UDR2;
store_char(c, &rx_buffer2);
}
#elif defined(SIG_USART2_RECV)
#error SIG_USART2_RECV
#endif
#if defined(USART3_RX_vect) && defined(UDR3)
void serialEvent3() __attribute__((weak));
void serialEvent3() {}
#define serialEvent3_implemented
SIGNAL(USART3_RX_vect)
{
unsigned char c = UDR3;
store_char(c, &rx_buffer3);
}
#elif defined(SIG_USART3_RECV)
#error SIG_USART3_RECV
#endif
void serialEventRun(void)
{
#ifdef serialEvent_implemented
if (Serial.available()) serialEvent();
#endif
#ifdef serialEvent1_implemented
if (Serial1.available()) serialEvent1();
#endif
#ifdef serialEvent2_implemented
if (Serial2.available()) serialEvent2();
#endif
#ifdef serialEvent3_implemented
if (Serial3.available()) serialEvent3();
#endif
}
#if !defined(USART0_UDRE_vect) && defined(USART1_UDRE_vect)
// do nothing - on the 32u4 the first USART is USART1
#else
#if !defined(UART0_UDRE_vect) && !defined(UART_UDRE_vect) && !defined(USART0_UDRE_vect) && !defined(USART_UDRE_vect)
#error "Don't know what the Data Register Empty vector is called for the first UART"
#else
#if defined(UART0_UDRE_vect)
ISR(UART0_UDRE_vect)
#elif defined(UART_UDRE_vect)
ISR(UART_UDRE_vect)
#elif defined(USART0_UDRE_vect)
ISR(USART0_UDRE_vect)
#elif defined(USART_UDRE_vect)
ISR(USART_UDRE_vect)
#endif
{
if (tx_buffer.head == tx_buffer.tail) {
// Buffer empty, so disable interrupts
#if defined(UCSR0B)
cbi(UCSR0B, UDRIE0);
#else
cbi(UCSRB, UDRIE);
#endif
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer.buffer[tx_buffer.tail];
tx_buffer.tail = (tx_buffer.tail + 1) % SERIAL_BUFFER_SIZE;
#if defined(UDR0)
UDR0 = c;
#elif defined(UDR)
UDR = c;
#else
#error UDR not defined
#endif
}
}
#endif
#endif
#ifdef USART1_UDRE_vect
ISR(USART1_UDRE_vect)
{
if (tx_buffer1.head == tx_buffer1.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR1B, UDRIE1);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer1.buffer[tx_buffer1.tail];
tx_buffer1.tail = (tx_buffer1.tail + 1) % SERIAL_BUFFER_SIZE;
UDR1 = c;
}
}
#endif
#ifdef USART2_UDRE_vect
ISR(USART2_UDRE_vect)
{
if (tx_buffer2.head == tx_buffer2.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR2B, UDRIE2);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer2.buffer[tx_buffer2.tail];
tx_buffer2.tail = (tx_buffer2.tail + 1) % SERIAL_BUFFER_SIZE;
UDR2 = c;
}
}
#endif
#ifdef USART3_UDRE_vect
ISR(USART3_UDRE_vect)
{
if (tx_buffer3.head == tx_buffer3.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR3B, UDRIE3);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer3.buffer[tx_buffer3.tail];
tx_buffer3.tail = (tx_buffer3.tail + 1) % SERIAL_BUFFER_SIZE;
UDR3 = c;
}
}
#endif
// Constructors ////////////////////////////////////////////////////////////////
HardwareSerial::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 udrie, uint8_t u2x)
{
_rx_buffer = rx_buffer;
_tx_buffer = tx_buffer;
_ubrrh = ubrrh;
_ubrrl = ubrrl;
_ucsra = ucsra;
_ucsrb = ucsrb;
_udr = udr;
_rxen = rxen;
_txen = txen;
_rxcie = rxcie;
_udrie = udrie;
_u2x = u2x;
}
// Public Methods //////////////////////////////////////////////////////////////
void HardwareSerial::begin(unsigned long baud)
{
uint16_t baud_setting;
bool use_u2x = true;
#if F_CPU == 16000000UL
// hardcoded exception for compatibility with the bootloader shipped
// with the Duemilanove and previous boards and the firmware on the 8U2
// on the Uno and Mega 2560.
if (baud == 57600) {
use_u2x = false;
}
#endif
try_again:
if (use_u2x) {
*_ucsra = 1 << _u2x;
baud_setting = (F_CPU / 4 / baud - 1) / 2;
} else {
*_ucsra = 0;
baud_setting = (F_CPU / 8 / baud - 1) / 2;
}
if ((baud_setting > 4095) && use_u2x)
{
use_u2x = false;
goto try_again;
}
// assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
*_ubrrh = baud_setting >> 8;
*_ubrrl = baud_setting;
sbi(*_ucsrb, _rxen);
sbi(*_ucsrb, _txen);
sbi(*_ucsrb, _rxcie);
cbi(*_ucsrb, _udrie);
}
void HardwareSerial::end()
{
// wait for transmission of outgoing data
while (_tx_buffer->head != _tx_buffer->tail)
;
cbi(*_ucsrb, _rxen);
cbi(*_ucsrb, _txen);
cbi(*_ucsrb, _rxcie);
cbi(*_ucsrb, _udrie);
// clear any received data
_rx_buffer->head = _rx_buffer->tail;
}
int HardwareSerial::available(void)
{
return (unsigned int)(SERIAL_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % SERIAL_BUFFER_SIZE;
}
int HardwareSerial:
eek(void)
{
if (_rx_buffer->head == _rx_buffer->tail) {
return -1;
} else {
return _rx_buffer->buffer[_rx_buffer->tail];
}
}
int HardwareSerial::read(void)
{
// if the head isn't ahead of the tail, we don't have any characters
if (_rx_buffer->head == _rx_buffer->tail) {
return -1;
} else {
unsigned char c = _rx_buffer->buffer[_rx_buffer->tail];
_rx_buffer->tail = (unsigned int)(_rx_buffer->tail + 1) % SERIAL_BUFFER_SIZE;
return c;
}
}
void HardwareSerial::flush()
{
while (_tx_buffer->head != _tx_buffer->tail)
;
}
size_t HardwareSerial::write(uint8_t c)
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// ???: return 0 here instead?
while (i == _tx_buffer->tail)
;
_tx_buffer->buffer[_tx_buffer->head] = c;
_tx_buffer->head = i;
sbi(*_ucsrb, _udrie);
return 1;
}
// Preinstantiate Objects //////////////////////////////////////////////////////
#if defined(UBRRH) && defined(UBRRL)
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRRH, &UBRRL, &UCSRA, &UCSRB, &UDR, RXEN, TXEN, RXCIE, UDRIE, U2X);
#elif defined(UBRR0H) && defined(UBRR0L)
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRIE0, U2X0);
#elif defined(USBCON)
// do nothing - Serial object and buffers are initialized in CDC code
#else
#error no serial port defined (port 0)
#endif
#if defined(UBRR1H)
HardwareSerial Serial1(&rx_buffer1, &tx_buffer1, &UBRR1H, &UBRR1L, &UCSR1A, &UCSR1B, &UDR1, RXEN1, TXEN1, RXCIE1, UDRIE1, U2X1);
#endif
#if defined(UBRR2H)
HardwareSerial Serial2(&rx_buffer2, &tx_buffer2, &UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UDR2, RXEN2, TXEN2, RXCIE2, UDRIE2, U2X2);
#endif
#if defined(UBRR3H)
HardwareSerial Serial3(&rx_buffer3, &tx_buffer3, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UDR3, RXEN3, TXEN3, RXCIE3, UDRIE3, U2X3);
#endif
#endif // whole file
sorry für eventuelle schreib fehler
grüsse aus frankreich
Sascha
was möchte mir andurio mir damit sagen?
ich fange erst an mit selber board bauen, und muss zugeben aller anfang ist schwer.
core.a(HardwareSerial.cpp.o): In function `__vector_19':
H:\software\arduino-1.0-windows\arduino-1.0\hardware\arduino\cores\arduino/HardwareSerial.cpp:192: multiple definition of `__vector_19'
Klar ein " multiple definition of `__vector_19'" in der hardwareserial.ccp
aber was ist den vactor_19?
hier mal die hardwareserial.ccp
/*
HardwareSerial.cpp - Hardware serial library for Wiring
Copyright (c) 2006 Nicholas Zambetti. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Modified 23 November 2006 by David A. Mellis
Modified 28 September 2010 by Mark Sproul
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "Arduino.h"
#include "wiring_private.h"
// this next line disables the entire HardwareSerial.cpp,
// this is so I can support Attiny series and any other chip without a uart
#if defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H)
#include "HardwareSerial.h"
// Define constants and variables for buffering incoming serial data. We're
// using a ring buffer (I think), in which head is the index of the location
// to which to write the next incoming character and tail is the index of the
// location from which to read.
#if (RAMEND < 1000)
#define SERIAL_BUFFER_SIZE 16
#else
#define SERIAL_BUFFER_SIZE 64
#endif
struct ring_buffer
{
unsigned char buffer[SERIAL_BUFFER_SIZE];
volatile int head;
volatile int tail;
};
#if defined(USBCON)
ring_buffer rx_buffer = { { 0 }, 0, 0};
ring_buffer tx_buffer = { { 0 }, 0, 0};
#endif
#if defined(UBRRH) || defined(UBRR0H)
ring_buffer rx_buffer = { { 0 }, 0, 0 };
ring_buffer tx_buffer = { { 0 }, 0, 0 };
#endif
#if defined(UBRR1H)
ring_buffer rx_buffer1 = { { 0 }, 0, 0 };
ring_buffer tx_buffer1 = { { 0 }, 0, 0 };
#endif
#if defined(UBRR2H)
ring_buffer rx_buffer2 = { { 0 }, 0, 0 };
ring_buffer tx_buffer2 = { { 0 }, 0, 0 };
#endif
#if defined(UBRR3H)
ring_buffer rx_buffer3 = { { 0 }, 0, 0 };
ring_buffer tx_buffer3 = { { 0 }, 0, 0 };
#endif
inline void store_char(unsigned char c, ring_buffer *buffer)
{
int i = (unsigned int)(buffer->head + 1) % SERIAL_BUFFER_SIZE;
// if we should be storing the received character into the location
// just before the tail (meaning that the head would advance to the
// current location of the tail), we're about to overflow the buffer
// and so we don't write the character or advance the head.
if (i != buffer->tail) {
buffer->buffer[buffer->head] = c;
buffer->head = i;
}
}
#if !defined(USART0_RX_vect) && defined(USART1_RX_vect)
// do nothing - on the 32u4 the first USART is USART1
#else
#if !defined(USART_RX_vect) && !defined(SIG_USART0_RECV) && \
!defined(SIG_UART0_RECV) && !defined(USART0_RX_vect) && \
!defined(SIG_UART_RECV)
#error "Don't know what the Data Received vector is called for the first UART"
#else
void serialEvent() __attribute__((weak));
void serialEvent() {}
#define serialEvent_implemented
#if defined(USART_RX_vect)
SIGNAL(USART_RX_vect)
#elif defined(SIG_USART0_RECV)
SIGNAL(SIG_USART0_RECV)
#elif defined(SIG_UART0_RECV)
SIGNAL(SIG_UART0_RECV)
#elif defined(USART0_RX_vect)
SIGNAL(USART0_RX_vect)
#elif defined(SIG_UART_RECV)
SIGNAL(SIG_UART_RECV)
#endif
{
#if defined(UDR0)
unsigned char c = UDR0;
#elif defined(UDR)
unsigned char c = UDR;
#else
#error UDR not defined
#endif
store_char(c, &rx_buffer);
}
#endif
#endif
#if defined(USART1_RX_vect)
void serialEvent1() __attribute__((weak));
void serialEvent1() {}
#define serialEvent1_implemented
SIGNAL(USART1_RX_vect)
{
unsigned char c = UDR1;
store_char(c, &rx_buffer1);
}
#elif defined(SIG_USART1_RECV)
#error SIG_USART1_RECV
#endif
#if defined(USART2_RX_vect) && defined(UDR2)
void serialEvent2() __attribute__((weak));
void serialEvent2() {}
#define serialEvent2_implemented
SIGNAL(USART2_RX_vect)
{
unsigned char c = UDR2;
store_char(c, &rx_buffer2);
}
#elif defined(SIG_USART2_RECV)
#error SIG_USART2_RECV
#endif
#if defined(USART3_RX_vect) && defined(UDR3)
void serialEvent3() __attribute__((weak));
void serialEvent3() {}
#define serialEvent3_implemented
SIGNAL(USART3_RX_vect)
{
unsigned char c = UDR3;
store_char(c, &rx_buffer3);
}
#elif defined(SIG_USART3_RECV)
#error SIG_USART3_RECV
#endif
void serialEventRun(void)
{
#ifdef serialEvent_implemented
if (Serial.available()) serialEvent();
#endif
#ifdef serialEvent1_implemented
if (Serial1.available()) serialEvent1();
#endif
#ifdef serialEvent2_implemented
if (Serial2.available()) serialEvent2();
#endif
#ifdef serialEvent3_implemented
if (Serial3.available()) serialEvent3();
#endif
}
#if !defined(USART0_UDRE_vect) && defined(USART1_UDRE_vect)
// do nothing - on the 32u4 the first USART is USART1
#else
#if !defined(UART0_UDRE_vect) && !defined(UART_UDRE_vect) && !defined(USART0_UDRE_vect) && !defined(USART_UDRE_vect)
#error "Don't know what the Data Register Empty vector is called for the first UART"
#else
#if defined(UART0_UDRE_vect)
ISR(UART0_UDRE_vect)
#elif defined(UART_UDRE_vect)
ISR(UART_UDRE_vect)
#elif defined(USART0_UDRE_vect)
ISR(USART0_UDRE_vect)
#elif defined(USART_UDRE_vect)
ISR(USART_UDRE_vect)
#endif
{
if (tx_buffer.head == tx_buffer.tail) {
// Buffer empty, so disable interrupts
#if defined(UCSR0B)
cbi(UCSR0B, UDRIE0);
#else
cbi(UCSRB, UDRIE);
#endif
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer.buffer[tx_buffer.tail];
tx_buffer.tail = (tx_buffer.tail + 1) % SERIAL_BUFFER_SIZE;
#if defined(UDR0)
UDR0 = c;
#elif defined(UDR)
UDR = c;
#else
#error UDR not defined
#endif
}
}
#endif
#endif
#ifdef USART1_UDRE_vect
ISR(USART1_UDRE_vect)
{
if (tx_buffer1.head == tx_buffer1.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR1B, UDRIE1);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer1.buffer[tx_buffer1.tail];
tx_buffer1.tail = (tx_buffer1.tail + 1) % SERIAL_BUFFER_SIZE;
UDR1 = c;
}
}
#endif
#ifdef USART2_UDRE_vect
ISR(USART2_UDRE_vect)
{
if (tx_buffer2.head == tx_buffer2.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR2B, UDRIE2);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer2.buffer[tx_buffer2.tail];
tx_buffer2.tail = (tx_buffer2.tail + 1) % SERIAL_BUFFER_SIZE;
UDR2 = c;
}
}
#endif
#ifdef USART3_UDRE_vect
ISR(USART3_UDRE_vect)
{
if (tx_buffer3.head == tx_buffer3.tail) {
// Buffer empty, so disable interrupts
cbi(UCSR3B, UDRIE3);
}
else {
// There is more data in the output buffer. Send the next byte
unsigned char c = tx_buffer3.buffer[tx_buffer3.tail];
tx_buffer3.tail = (tx_buffer3.tail + 1) % SERIAL_BUFFER_SIZE;
UDR3 = c;
}
}
#endif
// Constructors ////////////////////////////////////////////////////////////////
HardwareSerial::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 udrie, uint8_t u2x)
{
_rx_buffer = rx_buffer;
_tx_buffer = tx_buffer;
_ubrrh = ubrrh;
_ubrrl = ubrrl;
_ucsra = ucsra;
_ucsrb = ucsrb;
_udr = udr;
_rxen = rxen;
_txen = txen;
_rxcie = rxcie;
_udrie = udrie;
_u2x = u2x;
}
// Public Methods //////////////////////////////////////////////////////////////
void HardwareSerial::begin(unsigned long baud)
{
uint16_t baud_setting;
bool use_u2x = true;
#if F_CPU == 16000000UL
// hardcoded exception for compatibility with the bootloader shipped
// with the Duemilanove and previous boards and the firmware on the 8U2
// on the Uno and Mega 2560.
if (baud == 57600) {
use_u2x = false;
}
#endif
try_again:
if (use_u2x) {
*_ucsra = 1 << _u2x;
baud_setting = (F_CPU / 4 / baud - 1) / 2;
} else {
*_ucsra = 0;
baud_setting = (F_CPU / 8 / baud - 1) / 2;
}
if ((baud_setting > 4095) && use_u2x)
{
use_u2x = false;
goto try_again;
}
// assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
*_ubrrh = baud_setting >> 8;
*_ubrrl = baud_setting;
sbi(*_ucsrb, _rxen);
sbi(*_ucsrb, _txen);
sbi(*_ucsrb, _rxcie);
cbi(*_ucsrb, _udrie);
}
void HardwareSerial::end()
{
// wait for transmission of outgoing data
while (_tx_buffer->head != _tx_buffer->tail)
;
cbi(*_ucsrb, _rxen);
cbi(*_ucsrb, _txen);
cbi(*_ucsrb, _rxcie);
cbi(*_ucsrb, _udrie);
// clear any received data
_rx_buffer->head = _rx_buffer->tail;
}
int HardwareSerial::available(void)
{
return (unsigned int)(SERIAL_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % SERIAL_BUFFER_SIZE;
}
int HardwareSerial:
eek(void){
if (_rx_buffer->head == _rx_buffer->tail) {
return -1;
} else {
return _rx_buffer->buffer[_rx_buffer->tail];
}
}
int HardwareSerial::read(void)
{
// if the head isn't ahead of the tail, we don't have any characters
if (_rx_buffer->head == _rx_buffer->tail) {
return -1;
} else {
unsigned char c = _rx_buffer->buffer[_rx_buffer->tail];
_rx_buffer->tail = (unsigned int)(_rx_buffer->tail + 1) % SERIAL_BUFFER_SIZE;
return c;
}
}
void HardwareSerial::flush()
{
while (_tx_buffer->head != _tx_buffer->tail)
;
}
size_t HardwareSerial::write(uint8_t c)
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// ???: return 0 here instead?
while (i == _tx_buffer->tail)
;
_tx_buffer->buffer[_tx_buffer->head] = c;
_tx_buffer->head = i;
sbi(*_ucsrb, _udrie);
return 1;
}
// Preinstantiate Objects //////////////////////////////////////////////////////
#if defined(UBRRH) && defined(UBRRL)
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRRH, &UBRRL, &UCSRA, &UCSRB, &UDR, RXEN, TXEN, RXCIE, UDRIE, U2X);
#elif defined(UBRR0H) && defined(UBRR0L)
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRIE0, U2X0);
#elif defined(USBCON)
// do nothing - Serial object and buffers are initialized in CDC code
#else
#error no serial port defined (port 0)
#endif
#if defined(UBRR1H)
HardwareSerial Serial1(&rx_buffer1, &tx_buffer1, &UBRR1H, &UBRR1L, &UCSR1A, &UCSR1B, &UDR1, RXEN1, TXEN1, RXCIE1, UDRIE1, U2X1);
#endif
#if defined(UBRR2H)
HardwareSerial Serial2(&rx_buffer2, &tx_buffer2, &UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UDR2, RXEN2, TXEN2, RXCIE2, UDRIE2, U2X2);
#endif
#if defined(UBRR3H)
HardwareSerial Serial3(&rx_buffer3, &tx_buffer3, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UDR3, RXEN3, TXEN3, RXCIE3, UDRIE3, U2X3);
#endif
#endif // whole file
sorry für eventuelle schreib fehler
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