diff -r 000000000000 -r 2c8ba1964db7 MarlinSerial.cpp --- /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 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 +