--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MarlinSerial.cpp Sat Nov 07 13:23:07 2015 +0100
@@ -0,0 +1,338 @@
+/*
+ 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 "Marlin.h"
+
+#ifndef REPRAPPRO_MULTIMATERIALS
+
+#include "MarlinSerial.h"
+
+#if MOTHERBOARD != 8 // !teensylu
+// 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)
+
+#if defined(UBRRH) || defined(UBRR0H)
+ ring_buffer rx_buffer = { { 0 }, 0, 0 };
+#endif
+
+FORCE_INLINE void store_char(unsigned char c)
+{
+ int i = (unsigned int)(rx_buffer.head + 1) % RX_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 != rx_buffer.tail) {
+ rx_buffer.buffer[rx_buffer.head] = c;
+ rx_buffer.head = i;
+ }
+}
+
+
+//#elif defined(SIG_USART_RECV)
+#if defined(USART0_RX_vect)
+ // fixed by Mark Sproul this is on the 644/644p
+ //SIGNAL(SIG_USART_RECV)
+ SIGNAL(USART0_RX_vect)
+ {
+ #if defined(UDR0)
+ unsigned char c = UDR0;
+ #elif defined(UDR)
+ unsigned char c = UDR; // atmega8, atmega32
+ #else
+ #error UDR not defined
+ #endif
+ store_char(c);
+ }
+#endif
+
+// Constructors ////////////////////////////////////////////////////////////////
+
+MarlinSerial::MarlinSerial()
+{
+
+}
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+void MarlinSerial::begin(long baud)
+{
+ uint16_t baud_setting;
+ bool useU2X0 = 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) {
+ useU2X0 = false;
+ }
+#endif
+
+ if (useU2X0) {
+ UCSR0A = 1 << U2X0;
+ baud_setting = (F_CPU / 4 / baud - 1) / 2;
+ } else {
+ UCSR0A = 0;
+ baud_setting = (F_CPU / 8 / baud - 1) / 2;
+ }
+
+ // assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
+ UBRR0H = baud_setting >> 8;
+ UBRR0L = baud_setting;
+
+ sbi(UCSR0B, RXEN0);
+ sbi(UCSR0B, TXEN0);
+ sbi(UCSR0B, RXCIE0);
+}
+
+void MarlinSerial::end()
+{
+ cbi(UCSR0B, RXEN0);
+ cbi(UCSR0B, TXEN0);
+ cbi(UCSR0B, RXCIE0);
+}
+
+
+
+int MarlinSerial::peek(void)
+{
+ if (rx_buffer.head == rx_buffer.tail) {
+ return -1;
+ } else {
+ return rx_buffer.buffer[rx_buffer.tail];
+ }
+}
+
+int MarlinSerial::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) % RX_BUFFER_SIZE;
+ return c;
+ }
+}
+
+void MarlinSerial::flush()
+{
+ // don't reverse this or there may be problems if the RX interrupt
+ // occurs after reading the value of rx_buffer_head but before writing
+ // the value to rx_buffer_tail; the previous value of rx_buffer_head
+ // may be written to rx_buffer_tail, making it appear as if the buffer
+ // don't reverse this or there may be problems if the RX interrupt
+ // occurs after reading the value of rx_buffer_head but before writing
+ // the value to rx_buffer_tail; the previous value of rx_buffer_head
+ // may be written to rx_buffer_tail, making it appear as if the buffer
+ // were full, not empty.
+ rx_buffer.head = rx_buffer.tail;
+}
+
+
+
+
+/// imports from print.h
+
+
+
+
+void MarlinSerial::print(char c, int base)
+{
+ print((long) c, base);
+}
+
+void MarlinSerial::print(unsigned char b, int base)
+{
+ print((unsigned long) b, base);
+}
+
+void MarlinSerial::print(int n, int base)
+{
+ print((long) n, base);
+}
+
+void MarlinSerial::print(unsigned int n, int base)
+{
+ print((unsigned long) n, base);
+}
+
+void MarlinSerial::print(long n, int base)
+{
+ if (base == 0) {
+ write(n);
+ } else if (base == 10) {
+ if (n < 0) {
+ print('-');
+ n = -n;
+ }
+ printNumber(n, 10);
+ } else {
+ printNumber(n, base);
+ }
+}
+
+void MarlinSerial::print(unsigned long n, int base)
+{
+ if (base == 0) write(n);
+ else printNumber(n, base);
+}
+
+void MarlinSerial::print(double n, int digits)
+{
+ printFloat(n, digits);
+}
+
+void MarlinSerial::println(void)
+{
+ print('\r');
+ print('\n');
+}
+
+void MarlinSerial::println(const String &s)
+{
+ print(s);
+ println();
+}
+
+void MarlinSerial::println(const char c[])
+{
+ print(c);
+ println();
+}
+
+void MarlinSerial::println(char c, int base)
+{
+ print(c, base);
+ println();
+}
+
+void MarlinSerial::println(unsigned char b, int base)
+{
+ print(b, base);
+ println();
+}
+
+void MarlinSerial::println(int n, int base)
+{
+ print(n, base);
+ println();
+}
+
+void MarlinSerial::println(unsigned int n, int base)
+{
+ print(n, base);
+ println();
+}
+
+void MarlinSerial::println(long n, int base)
+{
+ print(n, base);
+ println();
+}
+
+void MarlinSerial::println(unsigned long n, int base)
+{
+ print(n, base);
+ println();
+}
+
+void MarlinSerial::println(double n, int digits)
+{
+ print(n, digits);
+ println();
+}
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+void MarlinSerial::printNumber(unsigned long n, uint8_t base)
+{
+ unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
+ unsigned long i = 0;
+
+ if (n == 0) {
+ print('0');
+ return;
+ }
+
+ while (n > 0) {
+ buf[i++] = n % base;
+ n /= base;
+ }
+
+ for (; i > 0; i--)
+ print((char) (buf[i - 1] < 10 ?
+ '0' + buf[i - 1] :
+ 'A' + buf[i - 1] - 10));
+}
+
+void MarlinSerial::printFloat(double number, uint8_t digits)
+{
+ // Handle negative numbers
+ if (number < 0.0)
+ {
+ print('-');
+ number = -number;
+ }
+
+ // Round correctly so that print(1.999, 2) prints as "2.00"
+ double rounding = 0.5;
+ for (uint8_t i=0; i<digits; ++i)
+ rounding /= 10.0;
+
+ number += rounding;
+
+ // Extract the integer part of the number and print it
+ unsigned long int_part = (unsigned long)number;
+ double remainder = number - (double)int_part;
+ print(int_part);
+
+ // Print the decimal point, but only if there are digits beyond
+ if (digits > 0)
+ print(".");
+
+ // Extract digits from the remainder one at a time
+ while (digits-- > 0)
+ {
+ remainder *= 10.0;
+ int toPrint = int(remainder);
+ print(toPrint);
+ remainder -= toPrint;
+ }
+}
+// Preinstantiate Objects //////////////////////////////////////////////////////
+
+
+MarlinSerial MSerial;
+
+MarlinSerial MSerial1;
+
+#endif // whole file
+#endif //teensylu
+
+#endif REPRAPPRO_MULTIMATERIALS
+