diff options
Diffstat (limited to 'cores/arduino')
| -rwxr-xr-x | cores/arduino/HardwareSerial.cpp | 191 | ||||
| -rwxr-xr-x | cores/arduino/HardwareSerial.h | 65 | ||||
| -rwxr-xr-x | cores/arduino/Makefile | 243 | ||||
| -rwxr-xr-x | cores/arduino/Print.cpp | 215 | ||||
| -rwxr-xr-x | cores/arduino/Print.h | 62 | ||||
| -rw-r--r-- | cores/arduino/WConstants.h | 1 | ||||
| -rwxr-xr-x | cores/arduino/WInterrupts.c | 215 | ||||
| -rw-r--r-- | cores/arduino/WMath.cpp | 60 | ||||
| -rwxr-xr-x | cores/arduino/WProgram.h | 29 | ||||
| -rw-r--r-- | cores/arduino/binary.h | 515 | ||||
| -rwxr-xr-x | cores/arduino/main.cxx | 12 | ||||
| -rwxr-xr-x | cores/arduino/pins_arduino.c | 469 | ||||
| -rw-r--r-- | cores/arduino/pins_arduino.h | 76 | ||||
| -rwxr-xr-x | cores/arduino/wiring.c | 250 | ||||
| -rwxr-xr-x | cores/arduino/wiring.h | 137 | ||||
| -rwxr-xr-x | cores/arduino/wiring_analog.c | 179 | ||||
| -rwxr-xr-x | cores/arduino/wiring_digital.c | 111 | ||||
| -rwxr-xr-x | cores/arduino/wiring_private.h | 68 | ||||
| -rwxr-xr-x | cores/arduino/wiring_pulse.c | 66 | ||||
| -rwxr-xr-x | cores/arduino/wiring_shift.c | 40 |
20 files changed, 3004 insertions, 0 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp new file mode 100755 index 0000000..f8a959a --- /dev/null +++ b/cores/arduino/HardwareSerial.cpp @@ -0,0 +1,191 @@ +/* + 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 +*/ + +#include <stdio.h> +#include <string.h> +#include <inttypes.h> +#include "wiring.h" +#include "wiring_private.h" + +#include "HardwareSerial.h" + +// Define constants and variables for buffering incoming serial data. We're +// using a ring buffer (I think), in which rx_buffer_head is the index of the +// location to which to write the next incoming character and rx_buffer_tail +// is the index of the location from which to read. +#define RX_BUFFER_SIZE 128 + +struct ring_buffer { + unsigned char buffer[RX_BUFFER_SIZE]; + int head; + int tail; +}; + +ring_buffer rx_buffer = { { 0 }, 0, 0 }; + +#if defined(__AVR_ATmega1280__) +ring_buffer rx_buffer1 = { { 0 }, 0, 0 }; +ring_buffer rx_buffer2 = { { 0 }, 0, 0 }; +ring_buffer rx_buffer3 = { { 0 }, 0, 0 }; +#endif + +inline void store_char(unsigned char c, ring_buffer *rx_buffer) +{ + int i = (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; + } +} + +#if defined(__AVR_ATmega1280__) + +SIGNAL(SIG_USART0_RECV) +{ + unsigned char c = UDR0; + store_char(c, &rx_buffer); +} + +SIGNAL(SIG_USART1_RECV) +{ + unsigned char c = UDR1; + store_char(c, &rx_buffer1); +} + +SIGNAL(SIG_USART2_RECV) +{ + unsigned char c = UDR2; + store_char(c, &rx_buffer2); +} + +SIGNAL(SIG_USART3_RECV) +{ + unsigned char c = UDR3; + store_char(c, &rx_buffer3); +} + +#else + +#if defined(__AVR_ATmega8__) +SIGNAL(SIG_UART_RECV) +#else +SIGNAL(USART_RX_vect) +#endif +{ +#if defined(__AVR_ATmega8__) + unsigned char c = UDR; +#else + unsigned char c = UDR0; +#endif + store_char(c, &rx_buffer); +} + +#endif + +// Constructors //////////////////////////////////////////////////////////////// + +HardwareSerial::HardwareSerial(ring_buffer *rx_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) +{ + _rx_buffer = rx_buffer; + _ubrrh = ubrrh; + _ubrrl = ubrrl; + _ucsra = ucsra; + _ucsrb = ucsrb; + _udr = udr; + _rxen = rxen; + _txen = txen; + _rxcie = rxcie; + _udre = udre; +} + +// Public Methods ////////////////////////////////////////////////////////////// + +void HardwareSerial::begin(long speed) +{ + *_ubrrh = ((F_CPU / 16 + speed / 2) / speed - 1) >> 8; + *_ubrrl = ((F_CPU / 16 + speed / 2) / speed - 1); + sbi(*_ucsrb, _rxen); + sbi(*_ucsrb, _txen); + sbi(*_ucsrb, _rxcie); +} + +uint8_t HardwareSerial::available(void) +{ + return (RX_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % RX_BUFFER_SIZE; +} + +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 = (_rx_buffer->tail + 1) % RX_BUFFER_SIZE; + return c; + } +} + +void HardwareSerial::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; +} + +void HardwareSerial::write(uint8_t c) +{ + while (!((*_ucsra) & (1 << _udre))) + ; + + *_udr = c; +} + +// Preinstantiate Objects ////////////////////////////////////////////////////// + +#if defined(__AVR_ATmega8__) +HardwareSerial Serial(&rx_buffer, &UBRRH, &UBRRL, &UCSRA, &UCSRB, &UDR, RXEN, TXEN, RXCIE, UDRE); +#else +HardwareSerial Serial(&rx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRE0); +#endif + +#if defined(__AVR_ATmega1280__) +HardwareSerial Serial1(&rx_buffer1, &UBRR1H, &UBRR1L, &UCSR1A, &UCSR1B, &UDR1, RXEN1, TXEN1, RXCIE1, UDRE1); +HardwareSerial Serial2(&rx_buffer2, &UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UDR2, RXEN2, TXEN2, RXCIE2, UDRE2); +HardwareSerial Serial3(&rx_buffer3, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UDR3, RXEN3, TXEN3, RXCIE3, UDRE3); +#endif + diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h new file mode 100755 index 0000000..8610f5a --- /dev/null +++ b/cores/arduino/HardwareSerial.h @@ -0,0 +1,65 @@ +/* + HardwareSerial.h - 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 +*/ + +#ifndef HardwareSerial_h +#define HardwareSerial_h + +#include <inttypes.h> + +#include "Print.h" + +struct ring_buffer; + +class HardwareSerial : public Print +{ + private: + ring_buffer *_rx_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; + public: + HardwareSerial(ring_buffer *rx_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); + void begin(long); + uint8_t available(void); + int read(void); + void flush(void); + virtual void write(uint8_t); + using Print::write; // pull in write(str) and write(buf, size) from Print +}; + +extern HardwareSerial Serial; + +#if defined(__AVR_ATmega1280__) +extern HardwareSerial Serial1; +extern HardwareSerial Serial2; +extern HardwareSerial Serial3; +#endif + +#endif + diff --git a/cores/arduino/Makefile b/cores/arduino/Makefile new file mode 100755 index 0000000..30ea655 --- /dev/null +++ b/cores/arduino/Makefile @@ -0,0 +1,243 @@ +# Arduino 0015 Makefile +# Arduino adaptation by mellis, eighthave, oli.keller +# +# This makefile allows you to build sketches from the command line +# without the Arduino environment (or Java). +# +# Detailed instructions for using the makefile: +# +# 1. Copy this file into the folder with your sketch. There should be a +# file with the same name as the folder and with the extension .pde +# (e.g. foo.pde in the foo/ folder). +# +# 2. Modify the line containg "INSTALL_DIR" to point to the directory that +# contains the Arduino installation (for example, under Mac OS X, this +# might be /Applications/arduino-0012). +# +# 3. Modify the line containing "PORT" to refer to the filename +# representing the USB or serial connection to your Arduino board +# (e.g. PORT = /dev/tty.USB0). If the exact name of this file +# changes, you can use * as a wildcard (e.g. PORT = /dev/tty.usb*). +# +# 4. Set the line containing "MCU" to match your board's processor. +# Older one's are atmega8 based, newer ones like Arduino Mini, Bluetooth +# or Diecimila have the atmega168. If you're using a LilyPad Arduino, +# change F_CPU to 8000000. +# +# 5. At the command line, change to the directory containing your +# program's file and the makefile. +# +# 6. Type "make" and press enter to compile/verify your program. +# +# 7. Type "make upload", reset your Arduino board, and press enter to +# upload your program to the Arduino board. +# +# $Id$ + +TARGET = $(notdir $(CURDIR)) +INSTALL_DIR = ../../.. +PORT = /dev/tty.usb* +UPLOAD_RATE = 19200 +AVRDUDE_PROGRAMMER = stk500v1 +MCU = atmega168 +F_CPU = 16000000 + +############################################################################ +# Below here nothing should be changed... + +ARDUINO = $(INSTALL_DIR)/hardware/cores/arduino +AVR_TOOLS_PATH = $(INSTALL_DIR)/hardware/tools/avr/bin +SRC = $(ARDUINO)/pins_arduino.c $(ARDUINO)/wiring.c \ +$(ARDUINO)/wiring_analog.c $(ARDUINO)/wiring_digital.c \ +$(ARDUINO)/wiring_pulse.c $(ARDUINO)/wiring_serial.c \ +$(ARDUINO)/wiring_shift.c $(ARDUINO)/WInterrupts.c +CXXSRC = $(ARDUINO)/HardwareSerial.cpp $(ARDUINO)/WMath.cpp \ +$(ARDUINO)/Print.cpp +FORMAT = ihex + + +# Name of this Makefile (used for "make depend"). +MAKEFILE = Makefile + +# Debugging format. +# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2. +# AVR (extended) COFF requires stabs, plus an avr-objcopy run. +DEBUG = stabs + +OPT = s + +# Place -D or -U options here +CDEFS = -DF_CPU=$(F_CPU) +CXXDEFS = -DF_CPU=$(F_CPU) + +# Place -I options here +CINCS = -I$(ARDUINO) +CXXINCS = -I$(ARDUINO) + +# Compiler flag to set the C Standard level. +# c89 - "ANSI" C +# gnu89 - c89 plus GCC extensions +# c99 - ISO C99 standard (not yet fully implemented) +# gnu99 - c99 plus GCC extensions +CSTANDARD = -std=gnu99 +CDEBUG = -g$(DEBUG) +CWARN = -Wall -Wstrict-prototypes +CTUNING = -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums +#CEXTRA = -Wa,-adhlns=$(<:.c=.lst) + +CFLAGS = $(CDEBUG) $(CDEFS) $(CINCS) -O$(OPT) $(CWARN) $(CSTANDARD) $(CEXTRA) +CXXFLAGS = $(CDEFS) $(CINCS) -O$(OPT) +#ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs +LDFLAGS = -lm + + +# Programming support using avrdude. Settings and variables. +AVRDUDE_PORT = $(PORT) +AVRDUDE_WRITE_FLASH = -U flash:w:applet/$(TARGET).hex +AVRDUDE_FLAGS = -V -F -C $(INSTALL_DIR)/hardware/tools/avr/etc/avrdude.conf \ +-p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) \ +-b $(UPLOAD_RATE) + +# Program settings +CC = $(AVR_TOOLS_PATH)/avr-gcc +CXX = $(AVR_TOOLS_PATH)/avr-g++ +OBJCOPY = $(AVR_TOOLS_PATH)/avr-objcopy +OBJDUMP = $(AVR_TOOLS_PATH)/avr-objdump +AR = $(AVR_TOOLS_PATH)/avr-ar +SIZE = $(AVR_TOOLS_PATH)/avr-size +NM = $(AVR_TOOLS_PATH)/avr-nm +AVRDUDE = $(AVR_TOOLS_PATH)/avrdude +REMOVE = rm -f +MV = mv -f + +# Define all object files. +OBJ = $(SRC:.c=.o) $(CXXSRC:.cpp=.o) $(ASRC:.S=.o) + +# Define all listing files. +LST = $(ASRC:.S=.lst) $(CXXSRC:.cpp=.lst) $(SRC:.c=.lst) + +# Combine all necessary flags and optional flags. +# Add target processor to flags. +ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) +ALL_CXXFLAGS = -mmcu=$(MCU) -I. $(CXXFLAGS) +ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) + + +# Default target. +all: applet_files build sizeafter + +build: elf hex + +applet_files: $(TARGET).pde + # Here is the "preprocessing". + # It creates a .cpp file based with the same name as the .pde file. + # On top of the new .cpp file comes the WProgram.h header. + # At the end there is a generic main() function attached. + # Then the .cpp file will be compiled. Errors during compile will + # refer to this new, automatically generated, file. + # Not the original .pde file you actually edit... + test -d applet || mkdir applet + echo '#include "WProgram.h"' > applet/$(TARGET).cpp + cat $(TARGET).pde >> applet/$(TARGET).cpp + cat $(ARDUINO)/main.cxx >> applet/$(TARGET).cpp + +elf: applet/$(TARGET).elf +hex: applet/$(TARGET).hex +eep: applet/$(TARGET).eep +lss: applet/$(TARGET).lss +sym: applet/$(TARGET).sym + +# Program the device. +upload: applet/$(TARGET).hex + $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) + + + # Display size of file. +HEXSIZE = $(SIZE) --target=$(FORMAT) applet/$(TARGET).hex +ELFSIZE = $(SIZE) applet/$(TARGET).elf +sizebefore: + @if [ -f applet/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(HEXSIZE); echo; fi + +sizeafter: + @if [ -f applet/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(HEXSIZE); echo; fi + + +# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB. +COFFCONVERT=$(OBJCOPY) --debugging \ +--change-section-address .data-0x800000 \ +--change-section-address .bss-0x800000 \ +--change-section-address .noinit-0x800000 \ +--change-section-address .eeprom-0x810000 + + +coff: applet/$(TARGET).elf + $(COFFCONVERT) -O coff-avr applet/$(TARGET).elf $(TARGET).cof + + +extcoff: $(TARGET).elf + $(COFFCONVERT) -O coff-ext-avr applet/$(TARGET).elf $(TARGET).cof + + +.SUFFIXES: .elf .hex .eep .lss .sym + +.elf.hex: + $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@ + +.elf.eep: + -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \ + --change-section-lma .eeprom=0 -O $(FORMAT) $< $@ + +# Create extended listing file from ELF output file. +.elf.lss: + $(OBJDUMP) -h -S $< > $@ + +# Create a symbol table from ELF output file. +.elf.sym: + $(NM) -n $< > $@ + + # Link: create ELF output file from library. +applet/$(TARGET).elf: $(TARGET).pde applet/core.a + $(CC) $(ALL_CFLAGS) -o $@ applet/$(TARGET).cpp -L. applet/core.a $(LDFLAGS) + +applet/core.a: $(OBJ) + @for i in $(OBJ); do echo $(AR) rcs applet/core.a $$i; $(AR) rcs applet/core.a $$i; done + + + +# Compile: create object files from C++ source files. +.cpp.o: + $(CXX) -c $(ALL_CXXFLAGS) $< -o $@ + +# Compile: create object files from C source files. +.c.o: + $(CC) -c $(ALL_CFLAGS) $< -o $@ + + +# Compile: create assembler files from C source files. +.c.s: + $(CC) -S $(ALL_CFLAGS) $< -o $@ + + +# Assemble: create object files from assembler source files. +.S.o: + $(CC) -c $(ALL_ASFLAGS) $< -o $@ + + +# Automatic dependencies +%.d: %.c + $(CC) -M $(ALL_CFLAGS) $< | sed "s;$(notdir $*).o:;$*.o $*.d:;" > $@ + +%.d: %.cpp + $(CXX) -M $(ALL_CXXFLAGS) $< | sed "s;$(notdir $*).o:;$*.o $*.d:;" > $@ + + +# Target: clean project. +clean: + $(REMOVE) applet/$(TARGET).hex applet/$(TARGET).eep applet/$(TARGET).cof applet/$(TARGET).elf \ + applet/$(TARGET).map applet/$(TARGET).sym applet/$(TARGET).lss applet/core.a \ + $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d) $(CXXSRC:.cpp=.s) $(CXXSRC:.cpp=.d) + +.PHONY: all build elf hex eep lss sym program coff extcoff clean applet_files sizebefore sizeafter + +include $(SRC:.c=.d) +include $(CXXSRC:.cpp=.d) diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp new file mode 100755 index 0000000..74d0e5b --- /dev/null +++ b/cores/arduino/Print.cpp @@ -0,0 +1,215 @@ +/* + Print.cpp - Base class that provides print() and println() + Copyright (c) 2008 David A. Mellis. 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 + */ + +#include <stdio.h> +#include <string.h> +#include <math.h> +#include "wiring.h" + +#include "Print.h" + +// Public Methods ////////////////////////////////////////////////////////////// + +/* default implementation: may be overridden */ +void Print::write(const char *str) +{ + while (*str) + write(*str++); +} + +/* default implementation: may be overridden */ +void Print::write(const uint8_t *buffer, size_t size) +{ + while (size--) + write(*buffer++); +} + +void Print::print(uint8_t b) +{ + this->write(b); +} + +void Print::print(char c) +{ + print((byte) c); +} + +void Print::print(const char str[]) +{ + write(str); +} + +void Print::print(int n) +{ + print((long) n); +} + +void Print::print(unsigned int n) +{ + print((unsigned long) n); +} + +void Print::print(long n) +{ + if (n < 0) { + print('-'); + n = -n; + } + printNumber(n, 10); +} + +void Print::print(unsigned long n) +{ + printNumber(n, 10); +} + +void Print::print(long n, int base) +{ + if (base == 0) + print((char) n); + else if (base == 10) + print(n); + else + printNumber(n, base); +} + +void Print::print(double n) +{ + printFloat(n, 2); +} + +void Print::println(void) +{ + print('\r'); + print('\n'); +} + +void Print::println(char c) +{ + print(c); + println(); +} + +void Print::println(const char c[]) +{ + print(c); + println(); +} + +void Print::println(uint8_t b) +{ + print(b); + println(); +} + +void Print::println(int n) +{ + print(n); + println(); +} + +void Print::println(unsigned int n) +{ + print(n); + println(); +} + +void Print::println(long n) +{ + print(n); + println(); +} + +void Print::println(unsigned long n) +{ + print(n); + println(); +} + +void Print::println(long n, int base) +{ + print(n, base); + println(); +} + +void Print::println(double n) +{ + print(n); + println(); +} + +// Private Methods ///////////////////////////////////////////////////////////// + +void Print::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 Print::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; + } +} diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h new file mode 100755 index 0000000..a69e85d --- /dev/null +++ b/cores/arduino/Print.h @@ -0,0 +1,62 @@ +/* + Print.h - Base class that provides print() and println() + Copyright (c) 2008 David A. Mellis. 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 +*/ + +#ifndef Print_h +#define Print_h + +#include <inttypes.h> +#include <stdio.h> // for size_t + +#define DEC 10 +#define HEX 16 +#define OCT 8 +#define BIN 2 +#define BYTE 0 + +class Print +{ + private: + void printNumber(unsigned long, uint8_t); + void printFloat(double, uint8_t); + public: + virtual void write(uint8_t) = 0; + virtual void write(const char *str); + virtual void write(const uint8_t *buffer, size_t size); + void print(char); + void print(const char[]); + void print(uint8_t); + void print(int); + void print(unsigned int); + void print(long); + void print(unsigned long); + void print(long, int); + void print(double); + void println(void); + void println(char); + void println(const char[]); + void println(uint8_t); + void println(int); + void println(unsigned int); + void println(long); + void println(unsigned long); + void println(long, int); + void println(double); +}; + +#endif diff --git a/cores/arduino/WConstants.h b/cores/arduino/WConstants.h new file mode 100644 index 0000000..3e19ac4 --- /dev/null +++ b/cores/arduino/WConstants.h @@ -0,0 +1 @@ +#include "wiring.h" diff --git a/cores/arduino/WInterrupts.c b/cores/arduino/WInterrupts.c new file mode 100755 index 0000000..69a78b0 --- /dev/null +++ b/cores/arduino/WInterrupts.c @@ -0,0 +1,215 @@ +/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */ + +/* + Part of the Wiring project - http://wiring.uniandes.edu.co + + Copyright (c) 2004-05 Hernando Barragan + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + Modified 24 November 2006 by David A. Mellis +*/ + +#include <inttypes.h> +#include <avr/io.h> +#include <avr/interrupt.h> +#include <avr/pgmspace.h> +#include <stdio.h> + +#include "WConstants.h" +#include "wiring_private.h" + +volatile static voidFuncPtr intFunc[EXTERNAL_NUM_INTERRUPTS]; +// volatile static voidFuncPtr twiIntFunc; + +#if defined(__AVR_ATmega8__) +#define EICRA MCUCR +#define EIMSK GICR +#endif + +void attachInterrupt(uint8_t interruptNum, void (*userFunc)(void), int mode) { + if(interruptNum < EXTERNAL_NUM_INTERRUPTS) { + intFunc[interruptNum] = userFunc; + + // Configure the interrupt mode (trigger on low input, any change, rising + // edge, or falling edge). The mode constants were chosen to correspond + // to the configuration bits in the hardware register, so we simply shift + // the mode into place. + + // Enable the interrupt. + + switch (interruptNum) { +#if defined(__AVR_ATmega1280__) + case 2: + EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00); + EIMSK |= (1 << INT0); + break; + case 3: + EICRA = (EICRA & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10); + EIMSK |= (1 << INT1); + break; + case 4: + EICRA = (EICRA & ~((1 << ISC20) | (1 << ISC21))) | (mode << ISC20); + EIMSK |= (1 << INT2); + break; + case 5: + EICRA = (EICRA & ~((1 << ISC30) | (1 << ISC31))) | (mode << ISC30); + EIMSK |= (1 << INT3); + break; + case 0: + EICRB = (EICRB & ~((1 << ISC40) | (1 << ISC41))) | (mode << ISC40); + EIMSK |= (1 << INT4); + break; + case 1: + EICRB = (EICRB & ~((1 << ISC50) | (1 << ISC51))) | (mode << ISC50); + EIMSK |= (1 << INT5); + break; + case 6: + EICRB = (EICRB & ~((1 << ISC60) | (1 << ISC61))) | (mode << ISC60); + EIMSK |= (1 << INT6); + break; + case 7: + EICRB = (EICRB & ~((1 << ISC70) | (1 << ISC71))) | (mode << ISC70); + EIMSK |= (1 << INT7); + break; +#else + case 0: + EICRA = (EICRA & ~((1 << ISC00) | (1 << ISC01))) | (mode << ISC00); + EIMSK |= (1 << INT0); + break; + case 1: + EICRA = (EICRA & ~((1 << ISC10) | (1 << ISC11))) | (mode << ISC10); + EIMSK |= (1 << INT1); + break; +#endif + } + } +} + +void detachInterrupt(uint8_t interruptNum) { + if(interruptNum < EXTERNAL_NUM_INTERRUPTS) { + // Disable the interrupt. (We can't assume that interruptNum is equal + // to the number of the EIMSK bit to clear, as this isn't true on the + // ATmega8. There, INT0 is 6 and INT1 is 7.) + switch (interruptNum) { +#if defined(__AVR_ATmega1280__) + case 2: + EIMSK &= ~(1 << INT0); + break; + case 3: + EIMSK &= ~(1 << INT1); + break; + case 4: + EIMSK &= ~(1 << INT2); + break; + case 5: + EIMSK &= ~(1 << INT3); + break; + case 0: + EIMSK &= ~(1 << INT4); + break; + case 1: + EIMSK &= ~(1 << INT5); + break; + case 6: + EIMSK &= ~(1 << INT6); + break; + case 7: + EIMSK &= ~(1 << INT7); + break; +#else + case 0: + EIMSK &= ~(1 << INT0); + break; + case 1: + EIMSK &= ~(1 << INT1); + break; +#endif + } + + intFunc[interruptNum] = 0; + } +} + +/* +void attachInterruptTwi(void (*userFunc)(void) ) { + twiIntFunc = userFunc; +} +*/ + +#if defined(__AVR_ATmega1280__) + +SIGNAL(INT0_vect) { + if(intFunc[EXTERNAL_INT_2]) + intFunc[EXTERNAL_INT_2](); +} + +SIGNAL(INT1_vect) { + if(intFunc[EXTERNAL_INT_3]) + intFunc[EXTERNAL_INT_3](); +} + +SIGNAL(INT2_vect) { + if(intFunc[EXTERNAL_INT_4]) + intFunc[EXTERNAL_INT_4](); +} + +SIGNAL(INT3_vect) { + if(intFunc[EXTERNAL_INT_5]) + intFunc[EXTERNAL_INT_5](); +} + +SIGNAL(INT4_vect) { + if(intFunc[EXTERNAL_INT_0]) + intFunc[EXTERNAL_INT_0](); +} + +SIGNAL(INT5_vect) { + if(intFunc[EXTERNAL_INT_1]) + intFunc[EXTERNAL_INT_1](); +} + +SIGNAL(INT6_vect) { + if(intFunc[EXTERNAL_INT_6]) + intFunc[EXTERNAL_INT_6](); +} + +SIGNAL(INT7_vect) { + if(intFunc[EXTERNAL_INT_7]) + intFunc[EXTERNAL_INT_7](); +} + +#else + +SIGNAL(INT0_vect) { + if(intFunc[EXTERNAL_INT_0]) + intFunc[EXTERNAL_INT_0](); +} + +SIGNAL(INT1_vect) { + if(intFunc[EXTERNAL_INT_1]) + intFunc[EXTERNAL_INT_1](); +} + +#endif + +/* +SIGNAL(SIG_2WIRE_SERIAL) { + if(twiIntFunc) + twiIntFunc(); +} +*/ + diff --git a/cores/arduino/WMath.cpp b/cores/arduino/WMath.cpp new file mode 100644 index 0000000..2120c4c --- /dev/null +++ b/cores/arduino/WMath.cpp @@ -0,0 +1,60 @@ +/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */ + +/* + Part of the Wiring project - http://wiring.org.co + Copyright (c) 2004-06 Hernando Barragan + Modified 13 August 2006, David A. Mellis for Arduino - http://www.arduino.cc/ + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id$ +*/ + +extern "C" { + #include "stdlib.h" +} + +void randomSeed(unsigned int seed) +{ + if (seed != 0) { + srandom(seed); + } +} + +long random(long howbig) +{ + if (howbig == 0) { + return 0; + } + return random() % howbig; +} + +long random(long howsmall, long howbig) +{ + if (howsmall >= howbig) { + return howsmall; + } + long diff = howbig - howsmall; + return random(diff) + howsmall; +} + +long map(long x, long in_min, long in_max, long out_min, long out_max) +{ + return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; +} + +unsigned int makeWord(unsigned int w) { return w; } +unsigned int makeWord(unsigned char h, unsigned char l) { return (h << 8) | l; }
\ No newline at end of file diff --git a/cores/arduino/WProgram.h b/cores/arduino/WProgram.h new file mode 100755 index 0000000..fc14923 --- /dev/null +++ b/cores/arduino/WProgram.h @@ -0,0 +1,29 @@ +#ifndef WProgram_h +#define WProgram_h + +#include <stdlib.h> +#include <string.h> +#include <math.h> + +#include <avr/interrupt.h> + +#include "wiring.h" + +#ifdef __cplusplus +#include "HardwareSerial.h" + +uint16_t makeWord(uint16_t w); +uint16_t makeWord(byte h, byte l); + +#define word(...) makeWord(__VA_ARGS__) + +unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L); + +// WMath prototypes +long random(long); +long random(long, long); +void randomSeed(unsigned int); +long map(long, long, long, long, long); +#endif + +#endif
\ No newline at end of file diff --git a/cores/arduino/binary.h b/cores/arduino/binary.h new file mode 100644 index 0000000..af14980 --- /dev/null +++ b/cores/arduino/binary.h @@ -0,0 +1,515 @@ +#ifndef Binary_h +#define Binary_h + +#define B0 0 +#define B00 0 +#define B000 0 +#define B0000 0 +#define B00000 0 +#define B000000 0 +#define B0000000 0 +#define B00000000 0 +#define B1 1 +#define B01 1 +#define B001 1 +#define B0001 1 +#define B00001 1 +#define B000001 1 +#define B0000001 1 +#define B00000001 1 +#define B10 2 +#define B010 2 +#define B0010 2 +#define B00010 2 +#define B000010 2 +#define B0000010 2 +#define B00000010 2 +#define B11 3 +#define B011 3 +#define B0011 3 +#define B00011 3 +#define B000011 3 +#define B0000011 3 +#define B00000011 3 +#define B100 4 +#define B0100 4 +#define B00100 4 +#define B000100 4 +#define B0000100 4 +#define B00000100 4 +#define B101 5 +#define B0101 5 +#define B00101 5 +#define B000101 5 +#define B0000101 5 +#define B00000101 5 +#define B110 6 +#define B0110 6 +#define B00110 6 +#define B000110 6 +#define B0000110 6 +#define B00000110 6 +#define B111 7 +#define B0111 7 +#define B00111 7 +#define B000111 7 +#define B0000111 7 +#define B00000111 7 +#define B1000 8 +#define B01000 8 +#define B001000 8 +#define B0001000 8 +#define B00001000 8 +#define B1001 9 +#define B01001 9 +#define B001001 9 +#define B0001001 9 +#define B00001001 9 +#define B1010 10 +#define B01010 10 +#define B001010 10 +#define B0001010 10 +#define B00001010 10 +#define B1011 11 +#define B01011 11 +#define B001011 11 +#define B0001011 11 +#define B00001011 11 +#define B1100 12 +#define B01100 12 +#define B001100 12 +#define B0001100 12 +#define B00001100 12 +#define B1101 13 +#define B01101 13 +#define B001101 13 +#define B0001101 13 +#define B00001101 13 +#define B1110 14 +#define B01110 14 +#define B001110 14 +#define B0001110 14 +#define B00001110 14 +#define B1111 15 +#define B01111 15 +#define B001111 15 +#define B0001111 15 +#define B00001111 15 +#define B10000 16 +#define B010000 16 +#define B0010000 16 +#define B00010000 16 +#define B10001 17 +#define B010001 17 +#define B0010001 17 +#define B00010001 17 +#define B10010 18 +#define B010010 18 +#define B0010010 18 +#define B00010010 18 +#define B10011 19 +#define B010011 19 +#define B0010011 19 +#define B00010011 19 +#define B10100 20 +#define B010100 20 +#define B0010100 20 +#define B00010100 20 +#define B10101 21 +#define B010101 21 +#define B0010101 21 +#define B00010101 21 +#define B10110 22 +#define B010110 22 +#define B0010110 22 +#define B00010110 22 +#define B10111 23 +#define B010111 23 +#define B0010111 23 +#define B00010111 23 +#define B11000 24 +#define B011000 24 +#define B0011000 24 +#define B00011000 24 +#define B11001 25 +#define B011001 25 +#define B0011001 25 +#define B00011001 25 +#define B11010 26 +#define B011010 26 +#define B0011010 26 +#define B00011010 26 +#define B11011 27 +#define B011011 27 +#define B0011011 27 +#define B00011011 27 +#define B11100 28 +#define B011100 28 +#define B0011100 28 +#define B00011100 28 +#define B11101 29 +#define B011101 29 +#define B0011101 29 +#define B00011101 29 +#define B11110 30 +#define B011110 30 +#define B0011110 30 +#define B00011110 30 +#define B11111 31 +#define B011111 31 +#define B0011111 31 +#define B00011111 31 +#define B100000 32 +#define B0100000 32 +#define B00100000 32 +#define B100001 33 +#define B0100001 33 +#define B00100001 33 +#define B100010 34 +#define B0100010 34 +#define B00100010 34 +#define B100011 35 +#define B0100011 35 +#define B00100011 35 +#define B100100 36 +#define B0100100 36 +#define B00100100 36 +#define B100101 37 +#define B0100101 37 +#define B00100101 37 +#define B100110 38 +#define B0100110 38 +#define B00100110 38 +#define B100111 39 +#define B0100111 39 +#define B00100111 39 +#define B101000 40 +#define B0101000 40 +#define B00101000 40 +#define B101001 41 +#define B0101001 41 +#define B00101001 41 +#define B101010 42 +#define B0101010 42 +#define B00101010 42 +#define B101011 43 +#define B0101011 43 +#define B00101011 43 +#define B101100 44 +#define B0101100 44 +#define B00101100 44 +#define B101101 45 +#define B0101101 45 +#define B00101101 45 +#define B101110 46 +#define B0101110 46 +#define B00101110 46 +#define B101111 47 +#define B0101111 47 +#define B00101111 47 +#define B110000 48 +#define B0110000 48 +#define B00110000 48 +#define B110001 49 +#define B0110001 49 +#define B00110001 49 +#define B110010 50 +#define B0110010 50 +#define B00110010 50 +#define B110011 51 +#define B0110011 51 +#define B00110011 51 +#define B110100 52 +#define B0110100 52 +#define B00110100 52 +#define B110101 53 +#define B0110101 53 +#define B00110101 53 +#define B110110 54 +#define B0110110 54 +#define B00110110 54 +#define B110111 55 +#define B0110111 55 +#define B00110111 55 +#define B111000 56 +#define B0111000 56 +#define B00111000 56 +#define B111001 57 +#define B0111001 57 +#define B00111001 57 +#define B111010 58 +#define B0111010 58 +#define B00111010 58 +#define B111011 59 +#define B0111011 59 +#define B00111011 59 +#define B111100 60 +#define B0111100 60 +#define B00111100 60 +#define B111101 61 +#define B0111101 61 +#define B00111101 61 +#define B111110 62 +#define B0111110 62 +#define B00111110 62 +#define B111111 63 +#define B0111111 63 +#define B00111111 63 +#define B1000000 64 +#define B01000000 64 +#define B1000001 65 +#define B01000001 65 +#define B1000010 66 +#define B01000010 66 +#define B1000011 67 +#define B01000011 67 +#define B1000100 68 +#define B01000100 68 +#define B1000101 69 +#define B01000101 69 +#define B1000110 70 +#define B01000110 70 +#define B1000111 71 +#define B01000111 71 +#define B1001000 72 +#define B01001000 72 +#define B1001001 73 +#define B01001001 73 +#define B1001010 74 +#define B01001010 74 +#define B1001011 75 +#define B01001011 75 +#define B1001100 76 +#define B01001100 76 +#define B1001101 77 +#define B01001101 77 +#define B1001110 78 +#define B01001110 78 +#define B1001111 79 +#define B01001111 79 +#define B1010000 80 +#define B01010000 80 +#define B1010001 81 +#define B01010001 81 +#define B1010010 82 +#define B01010010 82 +#define B1010011 83 +#define B01010011 83 +#define B1010100 84 +#define B01010100 84 +#define B1010101 85 +#define B01010101 85 +#define B1010110 86 +#define B01010110 86 +#define B1010111 87 +#define B01010111 87 +#define B1011000 88 +#define B01011000 88 +#define B1011001 89 +#define B01011001 89 +#define B1011010 90 +#define B01011010 90 +#define B1011011 91 +#define B01011011 91 +#define B1011100 92 +#define B01011100 92 +#define B1011101 93 +#define B01011101 93 +#define B1011110 94 +#define B01011110 94 +#define B1011111 95 +#define B01011111 95 +#define B1100000 96 +#define B01100000 96 +#define B1100001 97 +#define B01100001 97 +#define B1100010 98 +#define B01100010 98 +#define B1100011 99 +#define B01100011 99 +#define B1100100 100 +#define B01100100 100 +#define B1100101 101 +#define B01100101 101 +#define B1100110 102 +#define B01100110 102 +#define B1100111 103 +#define B01100111 103 +#define B1101000 104 +#define B01101000 104 +#define B1101001 105 +#define B01101001 105 +#define B1101010 106 +#define B01101010 106 +#define B1101011 107 +#define B01101011 107 +#define B1101100 108 +#define B01101100 108 +#define B1101101 109 +#define B01101101 109 +#define B1101110 110 +#define B01101110 110 +#define B1101111 111 +#define B01101111 111 +#define B1110000 112 +#define B01110000 112 +#define B1110001 113 +#define B01110001 113 +#define B1110010 114 +#define B01110010 114 +#define B1110011 115 +#define B01110011 115 +#define B1110100 116 +#define B01110100 116 +#define B1110101 117 +#define B01110101 117 +#define B1110110 118 +#define B01110110 118 +#define B1110111 119 +#define B01110111 119 +#define B1111000 120 +#define B01111000 120 +#define B1111001 121 +#define B01111001 121 +#define B1111010 122 +#define B01111010 122 +#define B1111011 123 +#define B01111011 123 +#define B1111100 124 +#define B01111100 124 +#define B1111101 125 +#define B01111101 125 +#define B1111110 126 +#define B01111110 126 +#define B1111111 127 +#define B01111111 127 +#define B10000000 128 +#define B10000001 129 +#define B10000010 130 +#define B10000011 131 +#define B10000100 132 +#define B10000101 133 +#define B10000110 134 +#define B10000111 135 +#define B10001000 136 +#define B10001001 137 +#define B10001010 138 +#define B10001011 139 +#define B10001100 140 +#define B10001101 141 +#define B10001110 142 +#define B10001111 143 +#define B10010000 144 +#define B10010001 145 +#define B10010010 146 +#define B10010011 147 +#define B10010100 148 +#define B10010101 149 +#define B10010110 150 +#define B10010111 151 +#define B10011000 152 +#define B10011001 153 +#define B10011010 154 +#define B10011011 155 +#define B10011100 156 +#define B10011101 157 +#define B10011110 158 +#define B10011111 159 +#define B10100000 160 +#define B10100001 161 +#define B10100010 162 +#define B10100011 163 +#define B10100100 164 +#define B10100101 165 +#define B10100110 166 +#define B10100111 167 +#define B10101000 168 +#define B10101001 169 +#define B10101010 170 +#define B10101011 171 +#define B10101100 172 +#define B10101101 173 +#define B10101110 174 +#define B10101111 175 +#define B10110000 176 +#define B10110001 177 +#define B10110010 178 +#define B10110011 179 +#define B10110100 180 +#define B10110101 181 +#define B10110110 182 +#define B10110111 183 +#define B10111000 184 +#define B10111001 185 +#define B10111010 186 +#define B10111011 187 +#define B10111100 188 +#define B10111101 189 +#define B10111110 190 +#define B10111111 191 +#define B11000000 192 +#define B11000001 193 +#define B11000010 194 +#define B11000011 195 +#define B11000100 196 +#define B11000101 197 +#define B11000110 198 +#define B11000111 199 +#define B11001000 200 +#define B11001001 201 +#define B11001010 202 +#define B11001011 203 +#define B11001100 204 +#define B11001101 205 +#define B11001110 206 +#define B11001111 207 +#define B11010000 208 +#define B11010001 209 +#define B11010010 210 +#define B11010011 211 +#define B11010100 212 +#define B11010101 213 +#define B11010110 214 +#define B11010111 215 +#define B11011000 216 +#define B11011001 217 +#define B11011010 218 +#define B11011011 219 +#define B11011100 220 +#define B11011101 221 +#define B11011110 222 +#define B11011111 223 +#define B11100000 224 +#define B11100001 225 +#define B11100010 226 +#define B11100011 227 +#define B11100100 228 +#define B11100101 229 +#define B11100110 230 +#define B11100111 231 +#define B11101000 232 +#define B11101001 233 +#define B11101010 234 +#define B11101011 235 +#define B11101100 236 +#define B11101101 237 +#define B11101110 238 +#define B11101111 239 +#define B11110000 240 +#define B11110001 241 +#define B11110010 242 +#define B11110011 243 +#define B11110100 244 +#define B11110101 245 +#define B11110110 246 +#define B11110111 247 +#define B11111000 248 +#define B11111001 249 +#define B11111010 250 +#define B11111011 251 +#define B11111100 252 +#define B11111101 253 +#define B11111110 254 +#define B11111111 255 + +#endif diff --git a/cores/arduino/main.cxx b/cores/arduino/main.cxx new file mode 100755 index 0000000..52351e4 --- /dev/null +++ b/cores/arduino/main.cxx @@ -0,0 +1,12 @@ +int main(void) +{ + init(); + + setup(); + + for (;;) + loop(); + + return 0; +} + diff --git a/cores/arduino/pins_arduino.c b/cores/arduino/pins_arduino.c new file mode 100755 index 0000000..1c1c088 --- /dev/null +++ b/cores/arduino/pins_arduino.c @@ -0,0 +1,469 @@ +/* + pins_arduino.c - pin definitions for the Arduino board + Part of Arduino / Wiring Lite + + Copyright (c) 2005 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id$ +*/ + +#include <avr/io.h> +#include "wiring_private.h" +#include "pins_arduino.h" + +// On the Arduino board, digital pins are also used +// for the analog output (software PWM). Analog input +// pins are a separate set. + +// ATMEL ATMEGA8 & 168 / ARDUINO +// +// +-\/-+ +// PC6 1| |28 PC5 (AI 5) +// (D 0) PD0 2| |27 PC4 (AI 4) +// (D 1) PD1 3| |26 PC3 (AI 3) +// (D 2) PD2 4| |25 PC2 (AI 2) +// PWM+ (D 3) PD3 5| |24 PC1 (AI 1) +// (D 4) PD4 6| |23 PC0 (AI 0) +// VCC 7| |22 GND +// GND 8| |21 AREF +// PB6 9| |20 AVCC +// PB7 10| |19 PB5 (D 13) +// PWM+ (D 5) PD5 11| |18 PB4 (D 12) +// PWM+ (D 6) PD6 12| |17 PB3 (D 11) PWM +// (D 7) PD7 13| |16 PB2 (D 10) PWM +// (D 8) PB0 14| |15 PB1 (D 9) PWM +// +----+ +// +// (PWM+ indicates the additional PWM pins on the ATmega168.) + +// ATMEL ATMEGA1280 / ARDUINO +// +// 0-7 PE0-PE7 works +// 8-13 PB0-PB5 works +// 14-21 PA0-PA7 works +// 22-29 PH0-PH7 works +// 30-35 PG5-PG0 works +// 36-43 PC7-PC0 works +// 44-51 PJ7-PJ0 works +// 52-59 PL7-PL0 works +// 60-67 PD7-PD0 works +// A0-A7 PF0-PF7 +// A8-A15 PK0-PK7 + +#define PA 1 +#define PB 2 +#define PC 3 +#define PD 4 +#define PE 5 +#define PF 6 +#define PG 7 +#define PH 8 +#define PJ 10 +#define PK 11 +#define PL 12 + +#define REPEAT8(x) x, x, x, x, x, x, x, x +#define BV0TO7 _BV(0), _BV(1), _BV(2), _BV(3), _BV(4), _BV(5), _BV(6), _BV(7) +#define BV7TO0 _BV(7), _BV(6), _BV(5), _BV(4), _BV(3), _BV(2), _BV(1), _BV(0) + + +#if defined(__AVR_ATmega1280__) +const uint16_t PROGMEM port_to_mode_PGM[] = { + NOT_A_PORT, + &DDRA, + &DDRB, + &DDRC, + &DDRD, + &DDRE, + &DDRF, + &DDRG, + &DDRH, + NOT_A_PORT, + &DDRJ, + &DDRK, + &DDRL, +}; + +const uint16_t PROGMEM port_to_output_PGM[] = { + NOT_A_PORT, + &PORTA, + &PORTB, + &PORTC, + &PORTD, + &PORTE, + &PORTF, + &PORTG, + &PORTH, + NOT_A_PORT, + &PORTJ, + &PORTK, + &PORTL, +}; + +const uint16_t PROGMEM port_to_input_PGM[] = { + NOT_A_PIN, + &PINA, + &PINB, + &PINC, + &PIND, + &PINE, + &PINF, + &PING, + &PINH, + NOT_A_PIN, + &PINJ, + &PINK, + &PINL, +}; + +const uint8_t PROGMEM digital_pin_to_port_PGM[] = { + // PORTLIST + // ------------------------------------------- + PE , // PE 0 ** 0 ** USART0_RX + PE , // PE 1 ** 1 ** USART0_TX + PE , // PE 4 ** 2 ** PWM2 + PE , // PE 5 ** 3 ** PWM3 + PG , // PG 5 ** 4 ** PWM4 + PE , // PE 3 ** 5 ** PWM5 + PH , // PH 3 ** 6 ** PWM6 + PH , // PH 4 ** 7 ** PWM7 + PH , // PH 5 ** 8 ** PWM8 + PH , // PH 6 ** 9 ** PWM9 + PB , // PB 4 ** 10 ** PWM10 + PB , // PB 5 ** 11 ** PWM11 + PB , // PB 6 ** 12 ** PWM12 + PB , // PB 7 ** 13 ** PWM13 + PJ , // PJ 1 ** 14 ** USART3_TX + PJ , // PJ 0 ** 15 ** USART3_RX + PH , // PH 1 ** 16 ** USART2_TX + PH , // PH 0 ** 17 ** USART2_RX + PD , // PD 3 ** 18 ** USART1_TX + PD , // PD 2 ** 19 ** USART1_RX + PD , // PD 1 ** 20 ** I2C_SDA + PD , // PD 0 ** 21 ** I2C_SCL + PA , // PA 0 ** 22 ** D22 + PA , // PA 1 ** 23 ** D23 + PA , // PA 2 ** 24 ** D24 + PA , // PA 3 ** 25 ** D25 + PA , // PA 4 ** 26 ** D26 + PA , // PA 5 ** 27 ** D27 + PA , // PA 6 ** 28 ** D28 + PA , // PA 7 ** 29 ** D29 + PC , // PC 7 ** 30 ** D30 + PC , // PC 6 ** 31 ** D31 + PC , // PC 5 ** 32 ** D32 + PC , // PC 4 ** 33 ** D33 + PC , // PC 3 ** 34 ** D34 + PC , // PC 2 ** 35 ** D35 + PC , // PC 1 ** 36 ** D36 + PC , // PC 0 ** 37 ** D37 + PD , // PD 7 ** 38 ** D38 + PG , // PG 2 ** 39 ** D39 + PG , // PG 1 ** 40 ** D40 + PG , // PG 0 ** 41 ** D41 + PL , // PL 7 ** 42 ** D42 + PL , // PL 6 ** 43 ** D43 + PL , // PL 5 ** 44 ** D44 + PL , // PL 4 ** 45 ** D45 + PL , // PL 3 ** 46 ** D46 + PL , // PL 2 ** 47 ** D47 + PL , // PL 1 ** 48 ** D48 + PL , // PL 0 ** 49 ** D49 + PB , // PB 3 ** 50 ** SPI_MISO + PB , // PB 2 ** 51 ** SPI_MOSI + PB , // PB 1 ** 52 ** SPI_SCK + PB , // PB 0 ** 53 ** SPI_SS + PF , // PF 0 ** 54 ** A0 + PF , // PF 1 ** 55 ** A1 + PF , // PF 2 ** 56 ** A2 + PF , // PF 3 ** 57 ** A3 + PF , // PF 4 ** 58 ** A4 + PF , // PF 5 ** 59 ** A5 + PF , // PF 6 ** 60 ** A6 + PF , // PF 7 ** 61 ** A7 + PK , // PK 0 ** 62 ** A8 + PK , // PK 1 ** 63 ** A9 + PK , // PK 2 ** 64 ** A10 + PK , // PK 3 ** 65 ** A11 + PK , // PK 4 ** 66 ** A12 + PK , // PK 5 ** 67 ** A13 + PK , // PK 6 ** 68 ** A14 + PK , // PK 7 ** 69 ** A15 +}; + +const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = { + // PIN IN PORT + // ------------------------------------------- + _BV( 0 ) , // PE 0 ** 0 ** USART0_RX + _BV( 1 ) , // PE 1 ** 1 ** USART0_TX + _BV( 4 ) , // PE 4 ** 2 ** PWM2 + _BV( 5 ) , // PE 5 ** 3 ** PWM3 + _BV( 5 ) , // PG 5 ** 4 ** PWM4 + _BV( 3 ) , // PE 3 ** 5 ** PWM5 + _BV( 3 ) , // PH 3 ** 6 ** PWM6 + _BV( 4 ) , // PH 4 ** 7 ** PWM7 + _BV( 5 ) , // PH 5 ** 8 ** PWM8 + _BV( 6 ) , // PH 6 ** 9 ** PWM9 + _BV( 4 ) , // PB 4 ** 10 ** PWM10 + _BV( 5 ) , // PB 5 ** 11 ** PWM11 + _BV( 6 ) , // PB 6 ** 12 ** PWM12 + _BV( 7 ) , // PB 7 ** 13 ** PWM13 + _BV( 1 ) , // PJ 1 ** 14 ** USART3_TX + _BV( 0 ) , // PJ 0 ** 15 ** USART3_RX + _BV( 1 ) , // PH 1 ** 16 ** USART2_TX + _BV( 0 ) , // PH 0 ** 17 ** USART2_RX + _BV( 3 ) , // PD 3 ** 18 ** USART1_TX + _BV( 2 ) , // PD 2 ** 19 ** USART1_RX + _BV( 1 ) , // PD 1 ** 20 ** I2C_SDA + _BV( 0 ) , // PD 0 ** 21 ** I2C_SCL + _BV( 0 ) , // PA 0 ** 22 ** D22 + _BV( 1 ) , // PA 1 ** 23 ** D23 + _BV( 2 ) , // PA 2 ** 24 ** D24 + _BV( 3 ) , // PA 3 ** 25 ** D25 + _BV( 4 ) , // PA 4 ** 26 ** D26 + _BV( 5 ) , // PA 5 ** 27 ** D27 + _BV( 6 ) , // PA 6 ** 28 ** D28 + _BV( 7 ) , // PA 7 ** 29 ** D29 + _BV( 7 ) , // PC 7 ** 30 ** D30 + _BV( 6 ) , // PC 6 ** 31 ** D31 + _BV( 5 ) , // PC 5 ** 32 ** D32 + _BV( 4 ) , // PC 4 ** 33 ** D33 + _BV( 3 ) , // PC 3 ** 34 ** D34 + _BV( 2 ) , // PC 2 ** 35 ** D35 + _BV( 1 ) , // PC 1 ** 36 ** D36 + _BV( 0 ) , // PC 0 ** 37 ** D37 + _BV( 7 ) , // PD 7 ** 38 ** D38 + _BV( 2 ) , // PG 2 ** 39 ** D39 + _BV( 1 ) , // PG 1 ** 40 ** D40 + _BV( 0 ) , // PG 0 ** 41 ** D41 + _BV( 7 ) , // PL 7 ** 42 ** D42 + _BV( 6 ) , // PL 6 ** 43 ** D43 + _BV( 5 ) , // PL 5 ** 44 ** D44 + _BV( 4 ) , // PL 4 ** 45 ** D45 + _BV( 3 ) , // PL 3 ** 46 ** D46 + _BV( 2 ) , // PL 2 ** 47 ** D47 + _BV( 1 ) , // PL 1 ** 48 ** D48 + _BV( 0 ) , // PL 0 ** 49 ** D49 + _BV( 3 ) , // PB 3 ** 50 ** SPI_MISO + _BV( 2 ) , // PB 2 ** 51 ** SPI_MOSI + _BV( 1 ) , // PB 1 ** 52 ** SPI_SCK + _BV( 0 ) , // PB 0 ** 53 ** SPI_SS + _BV( 0 ) , // PF 0 ** 54 ** A0 + _BV( 1 ) , // PF 1 ** 55 ** A1 + _BV( 2 ) , // PF 2 ** 56 ** A2 + _BV( 3 ) , // PF 3 ** 57 ** A3 + _BV( 4 ) , // PF 4 ** 58 ** A4 + _BV( 5 ) , // PF 5 ** 59 ** A5 + _BV( 6 ) , // PF 6 ** 60 ** A6 + _BV( 7 ) , // PF 7 ** 61 ** A7 + _BV( 0 ) , // PK 0 ** 62 ** A8 + _BV( 1 ) , // PK 1 ** 63 ** A9 + _BV( 2 ) , // PK 2 ** 64 ** A10 + _BV( 3 ) , // PK 3 ** 65 ** A11 + _BV( 4 ) , // PK 4 ** 66 ** A12 + _BV( 5 ) , // PK 5 ** 67 ** A13 + _BV( 6 ) , // PK 6 ** 68 ** A14 + _BV( 7 ) , // PK 7 ** 69 ** A15 +}; + +const uint8_t PROGMEM digital_pin_to_timer_PGM[] = { + // TIMERS + // ------------------------------------------- + NOT_ON_TIMER , // PE 0 ** 0 ** USART0_RX + NOT_ON_TIMER , // PE 1 ** 1 ** USART0_TX + TIMER3B , // PE 4 ** 2 ** PWM2 + TIMER3C , // PE 5 ** 3 ** PWM3 + TIMER0B , // PG 5 ** 4 ** PWM4 + TIMER3A , // PE 3 ** 5 ** PWM5 + TIMER4A , // PH 3 ** 6 ** PWM6 + TIMER4B , // PH 4 ** 7 ** PWM7 + TIMER4C , // PH 5 ** 8 ** PWM8 + TIMER2B , // PH 6 ** 9 ** PWM9 + TIMER2A , // PB 4 ** 10 ** PWM10 + TIMER1A , // PB 5 ** 11 ** PWM11 + TIMER1B , // PB 6 ** 12 ** PWM12 + TIMER0A , // PB 7 ** 13 ** PWM13 + NOT_ON_TIMER , // PJ 1 ** 14 ** USART3_TX + NOT_ON_TIMER , // PJ 0 ** 15 ** USART3_RX + NOT_ON_TIMER , // PH 1 ** 16 ** USART2_TX + NOT_ON_TIMER , // PH 0 ** 17 ** USART2_RX + NOT_ON_TIMER , // PD 3 ** 18 ** USART1_TX + NOT_ON_TIMER , // PD 2 ** 19 ** USART1_RX + NOT_ON_TIMER , // PD 1 ** 20 ** I2C_SDA + NOT_ON_TIMER , // PD 0 ** 21 ** I2C_SCL + NOT_ON_TIMER , // PA 0 ** 22 ** D22 + NOT_ON_TIMER , // PA 1 ** 23 ** D23 + NOT_ON_TIMER , // PA 2 ** 24 ** D24 + NOT_ON_TIMER , // PA 3 ** 25 ** D25 + NOT_ON_TIMER , // PA 4 ** 26 ** D26 + NOT_ON_TIMER , // PA 5 ** 27 ** D27 + NOT_ON_TIMER , // PA 6 ** 28 ** D28 + NOT_ON_TIMER , // PA 7 ** 29 ** D29 + NOT_ON_TIMER , // PC 7 ** 30 ** D30 + NOT_ON_TIMER , // PC 6 ** 31 ** D31 + NOT_ON_TIMER , // PC 5 ** 32 ** D32 + NOT_ON_TIMER , // PC 4 ** 33 ** D33 + NOT_ON_TIMER , // PC 3 ** 34 ** D34 + NOT_ON_TIMER , // PC 2 ** 35 ** D35 + NOT_ON_TIMER , // PC 1 ** 36 ** D36 + NOT_ON_TIMER , // PC 0 ** 37 ** D37 + NOT_ON_TIMER , // PD 7 ** 38 ** D38 + NOT_ON_TIMER , // PG 2 ** 39 ** D39 + NOT_ON_TIMER , // PG 1 ** 40 ** D40 + NOT_ON_TIMER , // PG 0 ** 41 ** D41 + NOT_ON_TIMER , // PL 7 ** 42 ** D42 + NOT_ON_TIMER , // PL 6 ** 43 ** D43 + TIMER5C , // PL 5 ** 44 ** D44 + TIMER5B , // PL 4 ** 45 ** D45 + TIMER5A , // PL 3 ** 46 ** D46 + NOT_ON_TIMER , // PL 2 ** 47 ** D47 + NOT_ON_TIMER , // PL 1 ** 48 ** D48 + NOT_ON_TIMER , // PL 0 ** 49 ** D49 + NOT_ON_TIMER , // PB 3 ** 50 ** SPI_MISO + NOT_ON_TIMER , // PB 2 ** 51 ** SPI_MOSI + NOT_ON_TIMER , // PB 1 ** 52 ** SPI_SCK + NOT_ON_TIMER , // PB 0 ** 53 ** SPI_SS + NOT_ON_TIMER , // PF 0 ** 54 ** A0 + NOT_ON_TIMER , // PF 1 ** 55 ** A1 + NOT_ON_TIMER , // PF 2 ** 56 ** A2 + NOT_ON_TIMER , // PF 3 ** 57 ** A3 + NOT_ON_TIMER , // PF 4 ** 58 ** A4 + NOT_ON_TIMER , // PF 5 ** 59 ** A5 + NOT_ON_TIMER , // PF 6 ** 60 ** A6 + NOT_ON_TIMER , // PF 7 ** 61 ** A7 + NOT_ON_TIMER , // PK 0 ** 62 ** A8 + NOT_ON_TIMER , // PK 1 ** 63 ** A9 + NOT_ON_TIMER , // PK 2 ** 64 ** A10 + NOT_ON_TIMER , // PK 3 ** 65 ** A11 + NOT_ON_TIMER , // PK 4 ** 66 ** A12 + NOT_ON_TIMER , // PK 5 ** 67 ** A13 + NOT_ON_TIMER , // PK 6 ** 68 ** A14 + NOT_ON_TIMER , // PK 7 ** 69 ** A15 +}; +#else +// these arrays map port names (e.g. port B) to the +// appropriate addresses for various functions (e.g. reading +// and writing) +const uint16_t PROGMEM port_to_mode_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &DDRB, + &DDRC, + &DDRD, +}; + +const uint16_t PROGMEM port_to_output_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &PORTB, + &PORTC, + &PORTD, +}; + +const uint16_t PROGMEM port_to_input_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &PINB, + &PINC, + &PIND, +}; + +const uint8_t PROGMEM digital_pin_to_port_PGM[] = { + PD, /* 0 */ + PD, + PD, + PD, + PD, + PD, + PD, + PD, + PB, /* 8 */ + PB, + PB, + PB, + PB, + PB, + PC, /* 14 */ + PC, + PC, + PC, + PC, + PC, +}; + +const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = { + _BV(0), /* 0, port D */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), + _BV(6), + _BV(7), + _BV(0), /* 8, port B */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), + _BV(0), /* 14, port C */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), +}; + +const uint8_t PROGMEM digital_pin_to_timer_PGM[] = { + NOT_ON_TIMER, /* 0 - port D */ + NOT_ON_TIMER, + NOT_ON_TIMER, + // on the ATmega168, digital pin 3 has hardware pwm +#if defined(__AVR_ATmega8__) + NOT_ON_TIMER, +#else + TIMER2B, +#endif + NOT_ON_TIMER, + // on the ATmega168, digital pins 5 and 6 have hardware pwm +#if defined(__AVR_ATmega8__) + NOT_ON_TIMER, + NOT_ON_TIMER, +#else + TIMER0B, + TIMER0A, +#endif + NOT_ON_TIMER, + NOT_ON_TIMER, /* 8 - port B */ + TIMER1A, + TIMER1B, +#if defined(__AVR_ATmega8__) + TIMER2, +#else + TIMER2A, +#endif + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, /* 14 - port C */ + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, +}; +#endif diff --git a/cores/arduino/pins_arduino.h b/cores/arduino/pins_arduino.h new file mode 100644 index 0000000..c7e40fd --- /dev/null +++ b/cores/arduino/pins_arduino.h @@ -0,0 +1,76 @@ +/* + pins_arduino.h - Pin definition functions for Arduino + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2007 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.h 249 2007-02-03 16:52:51Z mellis $ +*/ + +#ifndef Pins_Arduino_h +#define Pins_Arduino_h + +#include <avr/pgmspace.h> + +#define NOT_A_PIN 0 +#define NOT_A_PORT 0 + +#define NOT_ON_TIMER 0 +#define TIMER0A 1 +#define TIMER0B 2 +#define TIMER1A 3 +#define TIMER1B 4 +#define TIMER2 5 +#define TIMER2A 6 +#define TIMER2B 7 + +#define TIMER3A 8 +#define TIMER3B 9 +#define TIMER3C 10 +#define TIMER4A 11 +#define TIMER4B 12 +#define TIMER4C 13 +#define TIMER5A 14 +#define TIMER5B 15 +#define TIMER5C 16 + +// On the ATmega1280, the addresses of some of the port registers are +// greater than 255, so we can't store them in uint8_t's. +extern const uint16_t PROGMEM port_to_mode_PGM[]; +extern const uint16_t PROGMEM port_to_input_PGM[]; +extern const uint16_t PROGMEM port_to_output_PGM[]; + +extern const uint8_t PROGMEM digital_pin_to_port_PGM[]; +// extern const uint8_t PROGMEM digital_pin_to_bit_PGM[]; +extern const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[]; +extern const uint8_t PROGMEM digital_pin_to_timer_PGM[]; + +// Get the bit location within the hardware port of the given virtual pin. +// This comes from the pins_*.c file for the active board configuration. +// +// These perform slightly better as macros compared to inline functions +// +#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) ) +#define digitalPinToBitMask(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM + (P) ) ) +#define digitalPinToTimer(P) ( pgm_read_byte( digital_pin_to_timer_PGM + (P) ) ) +#define analogInPinToBit(P) (P) +#define portOutputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_output_PGM + (P))) ) +#define portInputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_input_PGM + (P))) ) +#define portModeRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_mode_PGM + (P))) ) + +#endif diff --git a/cores/arduino/wiring.c b/cores/arduino/wiring.c new file mode 100755 index 0000000..72bc282 --- /dev/null +++ b/cores/arduino/wiring.c @@ -0,0 +1,250 @@ +/* + wiring.c - Partial implementation of the Wiring API for the ATmega8. + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id$ +*/ + +#include "wiring_private.h" + +// the prescaler is set so that timer0 ticks every 64 clock cycles, and the +// the overflow handler is called every 256 ticks. +#define MICROSECONDS_PER_TIMER0_OVERFLOW (clockCyclesToMicroseconds(64 * 256)) + +// the whole number of milliseconds per timer0 overflow +#define MILLIS_INC (MICROSECONDS_PER_TIMER0_OVERFLOW / 1000) + +// the fractional number of milliseconds per timer0 overflow. we shift right +// by three to fit these numbers into a byte. (for the clock speeds we care +// about - 8 and 16 MHz - this doesn't lose precision.) +#define FRACT_INC ((MICROSECONDS_PER_TIMER0_OVERFLOW % 1000) >> 3) +#define FRACT_MAX (1000 >> 3) + +volatile unsigned long timer0_overflow_count = 0; +volatile unsigned long timer0_millis = 0; +static unsigned char timer0_fract = 0; + +SIGNAL(TIMER0_OVF_vect) +{ + // copy these to local variables so they can be stored in registers + // (volatile variables must be read from memory on every access) + unsigned long m = timer0_millis; + unsigned char f = timer0_fract; + + m += MILLIS_INC; + f += FRACT_INC; + if (f >= FRACT_MAX) { + f -= FRACT_MAX; + m += 1; + } + + timer0_fract = f; + timer0_millis = m; + timer0_overflow_count++; +} + +unsigned long millis() +{ + unsigned long m; + uint8_t oldSREG = SREG; + + // disable interrupts while we read timer0_millis or we might get an + // inconsistent value (e.g. in the middle of a write to timer0_millis) + cli(); + m = timer0_millis; + SREG = oldSREG; + + return m; +} + +unsigned long micros() { + unsigned long m, t; + uint8_t oldSREG = SREG; + + cli(); + t = TCNT0; + +#ifdef TIFR0 + if ((TIFR0 & _BV(TOV0)) && (t == 0)) + t = 256; +#else + if ((TIFR & _BV(TOV0)) && (t == 0)) + t = 256; +#endif + + m = timer0_overflow_count; + SREG = oldSREG; + + return ((m << 8) + t) * (64 / clockCyclesPerMicrosecond()); +} + +void delay(unsigned long ms) +{ + unsigned long start = millis(); + + while (millis() - start <= ms) + ; +} + +/* Delay for the given number of microseconds. Assumes a 8 or 16 MHz clock. + * Disables interrupts, which will disrupt the millis() function if used + * too frequently. */ +void delayMicroseconds(unsigned int us) +{ + uint8_t oldSREG; + + // calling avrlib's delay_us() function with low values (e.g. 1 or + // 2 microseconds) gives delays longer than desired. + //delay_us(us); + +#if F_CPU >= 16000000L + // for the 16 MHz clock on most Arduino boards + + // for a one-microsecond delay, simply return. the overhead + // of the function call yields a delay of approximately 1 1/8 us. + if (--us == 0) + return; + + // the following loop takes a quarter of a microsecond (4 cycles) + // per iteration, so execute it four times for each microsecond of + // delay requested. + us <<= 2; + + // account for the time taken in the preceeding commands. + us -= 2; +#else + // for the 8 MHz internal clock on the ATmega168 + + // for a one- or two-microsecond delay, simply return. the overhead of + // the function calls takes more than two microseconds. can't just + // subtract two, since us is unsigned; we'd overflow. + if (--us == 0) + return; + if (--us == 0) + return; + + // the following loop takes half of a microsecond (4 cycles) + // per iteration, so execute it twice for each microsecond of + // delay requested. + us <<= 1; + + // partially compensate for the time taken by the preceeding commands. + // we can't subtract any more than this or we'd overflow w/ small delays. + us--; +#endif + + // disable interrupts, otherwise the timer 0 overflow interrupt that + // tracks milliseconds will make us delay longer than we want. + oldSREG = SREG; + cli(); + + // busy wait + __asm__ __volatile__ ( + "1: sbiw %0,1" "\n\t" // 2 cycles + "brne 1b" : "=w" (us) : "0" (us) // 2 cycles + ); + + // reenable interrupts. + SREG = oldSREG; +} + +void init() +{ + // this needs to be called before setup() or some functions won't + // work there + sei(); + + // on the ATmega168, timer 0 is also used for fast hardware pwm + // (using phase-correct PWM would mean that timer 0 overflowed half as often + // resulting in different millis() behavior on the ATmega8 and ATmega168) +#if !defined(__AVR_ATmega8__) + sbi(TCCR0A, WGM01); + sbi(TCCR0A, WGM00); +#endif + // set timer 0 prescale factor to 64 +#if defined(__AVR_ATmega8__) + sbi(TCCR0, CS01); + sbi(TCCR0, CS00); +#else + sbi(TCCR0B, CS01); + sbi(TCCR0B, CS00); +#endif + // enable timer 0 overflow interrupt +#if defined(__AVR_ATmega8__) + sbi(TIMSK, TOIE0); +#else + sbi(TIMSK0, TOIE0); +#endif + + // timers 1 and 2 are used for phase-correct hardware pwm + // this is better for motors as it ensures an even waveform + // note, however, that fast pwm mode can achieve a frequency of up + // 8 MHz (with a 16 MHz clock) at 50% duty cycle + + // set timer 1 prescale factor to 64 + sbi(TCCR1B, CS11); + sbi(TCCR1B, CS10); + // put timer 1 in 8-bit phase correct pwm mode + sbi(TCCR1A, WGM10); + + // set timer 2 prescale factor to 64 +#if defined(__AVR_ATmega8__) + sbi(TCCR2, CS22); +#else + sbi(TCCR2B, CS22); +#endif + // configure timer 2 for phase correct pwm (8-bit) +#if defined(__AVR_ATmega8__) + sbi(TCCR2, WGM20); +#else + sbi(TCCR2A, WGM20); +#endif + +#if defined(__AVR_ATmega1280__) + // set timer 3, 4, 5 prescale factor to 64 + sbi(TCCR3B, CS31); sbi(TCCR3B, CS30); + sbi(TCCR4B, CS41); sbi(TCCR4B, CS40); + sbi(TCCR5B, CS51); sbi(TCCR5B, CS50); + // put timer 3, 4, 5 in 8-bit phase correct pwm mode + sbi(TCCR3A, WGM30); + sbi(TCCR4A, WGM40); + sbi(TCCR5A, WGM50); +#endif + + // set a2d prescale factor to 128 + // 16 MHz / 128 = 125 KHz, inside the desired 50-200 KHz range. + // XXX: this will not work properly for other clock speeds, and + // this code should use F_CPU to determine the prescale factor. + sbi(ADCSRA, ADPS2); + sbi(ADCSRA, ADPS1); + sbi(ADCSRA, ADPS0); + + // enable a2d conversions + sbi(ADCSRA, ADEN); + + // the bootloader connects pins 0 and 1 to the USART; disconnect them + // here so they can be used as normal digital i/o; they will be + // reconnected in Serial.begin() +#if defined(__AVR_ATmega8__) + UCSRB = 0; +#else + UCSR0B = 0; +#endif +}
\ No newline at end of file diff --git a/cores/arduino/wiring.h b/cores/arduino/wiring.h new file mode 100755 index 0000000..f0ba04c --- /dev/null +++ b/cores/arduino/wiring.h @@ -0,0 +1,137 @@ +/* + wiring.h - Partial implementation of the Wiring API for the ATmega8. + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id$ +*/ + +#ifndef Wiring_h +#define Wiring_h + +#include <avr/io.h> +#include "binary.h" + +#ifdef __cplusplus +extern "C"{ +#endif + +#ifndef ARDUINO +#define ARDUINO 16 +#endif + +#define HIGH 0x1 +#define LOW 0x0 + +#define INPUT 0x0 +#define OUTPUT 0x1 + +#define true 0x1 +#define false 0x0 + +#define PI 3.1415926535897932384626433832795 +#define HALF_PI 1.5707963267948966192313216916398 +#define TWO_PI 6.283185307179586476925286766559 +#define DEG_TO_RAD 0.017453292519943295769236907684886 +#define RAD_TO_DEG 57.295779513082320876798154814105 + +#define SERIAL 0x0 +#define DISPLAY 0x1 + +#define LSBFIRST 0 +#define MSBFIRST 1 + +#define CHANGE 1 +#define FALLING 2 +#define RISING 3 + +#define INTERNAL 3 +#define DEFAULT 1 +#define EXTERNAL 0 + +// undefine stdlib's abs if encountered +#ifdef abs +#undef abs +#endif + +#define min(a,b) ((a)<(b)?(a):(b)) +#define max(a,b) ((a)>(b)?(a):(b)) +#define abs(x) ((x)>0?(x):-(x)) +#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt))) +#define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5)) +#define radians(deg) ((deg)*DEG_TO_RAD) +#define degrees(rad) ((rad)*RAD_TO_DEG) +#define sq(x) ((x)*(x)) + +#define interrupts() sei() +#define noInterrupts() cli() + +#define clockCyclesPerMicrosecond() ( F_CPU / 1000000L ) +#define clockCyclesToMicroseconds(a) ( (a) / clockCyclesPerMicrosecond() ) +#define microsecondsToClockCycles(a) ( (a) * clockCyclesPerMicrosecond() ) + +#define lowByte(w) ((uint8_t) ((w) & 0xff)) +#define highByte(w) ((uint8_t) ((w) >> 8)) + +#define bitRead(value, bit) (((value) >> (bit)) & 0x01) +#define bitSet(value, bit) ((value) |= (1UL << (bit))) +#define bitClear(value, bit) ((value) &= ~(1UL << (bit))) +#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit)) + +typedef unsigned int word; + +#define bit(b) (1UL << (b)) + +typedef uint8_t boolean; +typedef uint8_t byte; + +void init(void); + +void pinMode(uint8_t, uint8_t); +void digitalWrite(uint8_t, uint8_t); +int digitalRead(uint8_t); +int analogRead(uint8_t); +void analogReference(uint8_t mode); +void analogWrite(uint8_t, int); + +void beginSerial(long); +void serialWrite(unsigned char); +int serialAvailable(void); +int serialRead(void); +void serialFlush(void); + +unsigned long millis(void); +unsigned long micros(void); +void delay(unsigned long); +void delayMicroseconds(unsigned int us); +unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout); + +void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, byte val); + +void attachInterrupt(uint8_t, void (*)(void), int mode); +void detachInterrupt(uint8_t); + +void setup(void); +void loop(void); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif diff --git a/cores/arduino/wiring_analog.c b/cores/arduino/wiring_analog.c new file mode 100755 index 0000000..529ad52 --- /dev/null +++ b/cores/arduino/wiring_analog.c @@ -0,0 +1,179 @@ +/* + wiring_analog.c - analog input and output + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ +*/ + +#include "wiring_private.h" +#include "pins_arduino.h" + +uint8_t analog_reference = DEFAULT; + +void analogReference(uint8_t mode) +{ + // can't actually set the register here because the default setting + // will connect AVCC and the AREF pin, which would cause a short if + // there's something connected to AREF. + analog_reference = mode; +} + +int analogRead(uint8_t pin) +{ + uint8_t low, high; + + // set the analog reference (high two bits of ADMUX) and select the + // channel (low 4 bits). this also sets ADLAR (left-adjust result) + // to 0 (the default). + ADMUX = (analog_reference << 6) | (pin & 0x07); + +#if defined(__AVR_ATmega1280__) + // the MUX5 bit of ADCSRB selects whether we're reading from channels + // 0 to 7 (MUX5 low) or 8 to 15 (MUX5 high). + ADCSRB = (ADCSRB & ~(1 << MUX5)) | (((pin >> 3) & 0x01) << MUX5); +#endif + + // without a delay, we seem to read from the wrong channel + //delay(1); + + // start the conversion + sbi(ADCSRA, ADSC); + + // ADSC is cleared when the conversion finishes + while (bit_is_set(ADCSRA, ADSC)); + + // we have to read ADCL first; doing so locks both ADCL + // and ADCH until ADCH is read. reading ADCL second would + // cause the results of each conversion to be discarded, + // as ADCL and ADCH would be locked when it completed. + low = ADCL; + high = ADCH; + + // combine the two bytes + return (high << 8) | low; +} + +// Right now, PWM output only works on the pins with +// hardware support. These are defined in the appropriate +// pins_*.c file. For the rest of the pins, we default +// to digital output. +void analogWrite(uint8_t pin, int val) +{ + // We need to make sure the PWM output is enabled for those pins + // that support it, as we turn it off when digitally reading or + // writing with them. Also, make sure the pin is in output mode + // for consistenty with Wiring, which doesn't require a pinMode + // call for the analog output pins. + pinMode(pin, OUTPUT); + + if (digitalPinToTimer(pin) == TIMER1A) { + // connect pwm to pin on timer 1, channel A + sbi(TCCR1A, COM1A1); + // set pwm duty + OCR1A = val; + } else if (digitalPinToTimer(pin) == TIMER1B) { + // connect pwm to pin on timer 1, channel B + sbi(TCCR1A, COM1B1); + // set pwm duty + OCR1B = val; +#if defined(__AVR_ATmega8__) + } else if (digitalPinToTimer(pin) == TIMER2) { + // connect pwm to pin on timer 2, channel B + sbi(TCCR2, COM21); + // set pwm duty + OCR2 = val; +#else + } else if (digitalPinToTimer(pin) == TIMER0A) { + if (val == 0) { + digitalWrite(pin, LOW); + } else { + // connect pwm to pin on timer 0, channel A + sbi(TCCR0A, COM0A1); + // set pwm duty + OCR0A = val; + } + } else if (digitalPinToTimer(pin) == TIMER0B) { + if (val == 0) { + digitalWrite(pin, LOW); + } else { + // connect pwm to pin on timer 0, channel B + sbi(TCCR0A, COM0B1); + // set pwm duty + OCR0B = val; + } + } else if (digitalPinToTimer(pin) == TIMER2A) { + // connect pwm to pin on timer 2, channel A + sbi(TCCR2A, COM2A1); + // set pwm duty + OCR2A = val; + } else if (digitalPinToTimer(pin) == TIMER2B) { + // connect pwm to pin on timer 2, channel B + sbi(TCCR2A, COM2B1); + // set pwm duty + OCR2B = val; +#endif +#if defined(__AVR_ATmega1280__) + // XXX: need to handle other timers here + } else if (digitalPinToTimer(pin) == TIMER3A) { + // connect pwm to pin on timer 3, channel A + sbi(TCCR3A, COM3A1); + // set pwm duty + OCR3A = val; + } else if (digitalPinToTimer(pin) == TIMER3B) { + // connect pwm to pin on timer 3, channel B + sbi(TCCR3A, COM3B1); + // set pwm duty + OCR3B = val; + } else if (digitalPinToTimer(pin) == TIMER3C) { + // connect pwm to pin on timer 3, channel C + sbi(TCCR3A, COM3C1); + // set pwm duty + OCR3C = val; + } else if (digitalPinToTimer(pin) == TIMER4A) { + // connect pwm to pin on timer 4, channel A + sbi(TCCR4A, COM4A1); + // set pwm duty + OCR4A = val; + } else if (digitalPinToTimer(pin) == TIMER4B) { + // connect pwm to pin on timer 4, channel B + sbi(TCCR4A, COM4B1); + // set pwm duty + OCR4B = val; + } else if (digitalPinToTimer(pin) == TIMER4C) { + // connect pwm to pin on timer 4, channel C + sbi(TCCR4A, COM4C1); + // set pwm duty + OCR4C = val; + } else if (digitalPinToTimer(pin) == TIMER5A) { + // connect pwm to pin on timer 5, channel A + sbi(TCCR5A, COM5A1); + // set pwm duty + OCR5A = val; + } else if (digitalPinToTimer(pin) == TIMER5B) { + // connect pwm to pin on timer 5, channel B + sbi(TCCR5A, COM5B1); + // set pwm duty + OCR5B = val; +#endif + } else if (val < 128) + digitalWrite(pin, LOW); + else + digitalWrite(pin, HIGH); +} diff --git a/cores/arduino/wiring_digital.c b/cores/arduino/wiring_digital.c new file mode 100755 index 0000000..1cdbf6c --- /dev/null +++ b/cores/arduino/wiring_digital.c @@ -0,0 +1,111 @@ +/* + wiring_digital.c - digital input and output functions + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ +*/ + +#include "wiring_private.h" +#include "pins_arduino.h" + +void pinMode(uint8_t pin, uint8_t mode) +{ + uint8_t bit = digitalPinToBitMask(pin); + uint8_t port = digitalPinToPort(pin); + volatile uint8_t *reg; + + if (port == NOT_A_PIN) return; + + // JWS: can I let the optimizer do this? + reg = portModeRegister(port); + + if (mode == INPUT) *reg &= ~bit; + else *reg |= bit; +} + +// Forcing this inline keeps the callers from having to push their own stuff +// on the stack. It is a good performance win and only takes 1 more byte per +// user than calling. (It will take more bytes on the 168.) +// +// But shouldn't this be moved into pinMode? Seems silly to check and do on +// each digitalread or write. +// +static inline void turnOffPWM(uint8_t timer) __attribute__ ((always_inline)); +static inline void turnOffPWM(uint8_t timer) +{ + if (timer == TIMER1A) cbi(TCCR1A, COM1A1); + if (timer == TIMER1B) cbi(TCCR1A, COM1B1); + +#if defined(__AVR_ATmega8__) + if (timer == TIMER2) cbi(TCCR2, COM21); +#else + if (timer == TIMER0A) cbi(TCCR0A, COM0A1); + if (timer == TIMER0B) cbi(TCCR0A, COM0B1); + if (timer == TIMER2A) cbi(TCCR2A, COM2A1); + if (timer == TIMER2B) cbi(TCCR2A, COM2B1); +#endif + +#if defined(__AVR_ATmega1280__) + if (timer == TIMER3A) cbi(TCCR3A, COM3A1); + if (timer == TIMER3B) cbi(TCCR3A, COM3B1); + if (timer == TIMER3C) cbi(TCCR3A, COM3C1); + if (timer == TIMER4A) cbi(TCCR4A, COM4A1); + if (timer == TIMER4B) cbi(TCCR4A, COM4B1); + if (timer == TIMER4C) cbi(TCCR4A, COM4C1); + if (timer == TIMER5A) cbi(TCCR5A, COM5A1); + if (timer == TIMER5B) cbi(TCCR5A, COM5B1); + if (timer == TIMER5C) cbi(TCCR5A, COM5C1); +#endif +} + +void digitalWrite(uint8_t pin, uint8_t val) +{ + uint8_t timer = digitalPinToTimer(pin); + uint8_t bit = digitalPinToBitMask(pin); + uint8_t port = digitalPinToPort(pin); + volatile uint8_t *out; + + if (port == NOT_A_PIN) return; + + // If the pin that support PWM output, we need to turn it off + // before doing a digital write. + if (timer != NOT_ON_TIMER) turnOffPWM(timer); + + out = portOutputRegister(port); + + if (val == LOW) *out &= ~bit; + else *out |= bit; +} + +int digitalRead(uint8_t pin) +{ + uint8_t timer = digitalPinToTimer(pin); + uint8_t bit = digitalPinToBitMask(pin); + uint8_t port = digitalPinToPort(pin); + + if (port == NOT_A_PIN) return LOW; + + // If the pin that support PWM output, we need to turn it off + // before getting a digital reading. + if (timer != NOT_ON_TIMER) turnOffPWM(timer); + + if (*portInputRegister(port) & bit) return HIGH; + return LOW; +} diff --git a/cores/arduino/wiring_private.h b/cores/arduino/wiring_private.h new file mode 100755 index 0000000..2dfe552 --- /dev/null +++ b/cores/arduino/wiring_private.h @@ -0,0 +1,68 @@ +/* + wiring_private.h - Internal header file. + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.h 239 2007-01-12 17:58:39Z mellis $ +*/ + +#ifndef WiringPrivate_h +#define WiringPrivate_h + +#include <avr/io.h> +#include <avr/interrupt.h> +#include <avr/delay.h> +#include <stdio.h> +#include <stdarg.h> + +#include "wiring.h" + +#ifdef __cplusplus +extern "C"{ +#endif + +#ifndef cbi +#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) +#endif +#ifndef sbi +#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit)) +#endif + +#define EXTERNAL_INT_0 0 +#define EXTERNAL_INT_1 1 +#define EXTERNAL_INT_2 2 +#define EXTERNAL_INT_3 3 +#define EXTERNAL_INT_4 4 +#define EXTERNAL_INT_5 5 +#define EXTERNAL_INT_6 6 +#define EXTERNAL_INT_7 7 + +#if defined(__AVR_ATmega1280__) +#define EXTERNAL_NUM_INTERRUPTS 8 +#else +#define EXTERNAL_NUM_INTERRUPTS 2 +#endif + +typedef void (*voidFuncPtr)(void); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif diff --git a/cores/arduino/wiring_pulse.c b/cores/arduino/wiring_pulse.c new file mode 100755 index 0000000..8f232f1 --- /dev/null +++ b/cores/arduino/wiring_pulse.c @@ -0,0 +1,66 @@ +/* + wiring_pulse.c - pulseIn() function + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ +*/ + +#include "wiring_private.h" +#include "pins_arduino.h" + +/* Measures the length (in microseconds) of a pulse on the pin; state is HIGH + * or LOW, the type of pulse to measure. Works on pulses from 2-3 microseconds + * to 3 minutes in length, but must be called at least a few dozen microseconds + * before the start of the pulse. */ +unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout) +{ + // cache the port and bit of the pin in order to speed up the + // pulse width measuring loop and achieve finer resolution. calling + // digitalRead() instead yields much coarser resolution. + uint8_t bit = digitalPinToBitMask(pin); + uint8_t port = digitalPinToPort(pin); + uint8_t stateMask = (state ? bit : 0); + unsigned long width = 0; // keep initialization out of time critical area + + // convert the timeout from microseconds to a number of times through + // the initial loop; it takes 16 clock cycles per iteration. + unsigned long numloops = 0; + unsigned long maxloops = microsecondsToClockCycles(timeout) / 16; + + // wait for any previous pulse to end + while ((*portInputRegister(port) & bit) == stateMask) + if (numloops++ == maxloops) + return 0; + + // wait for the pulse to start + while ((*portInputRegister(port) & bit) != stateMask) + if (numloops++ == maxloops) + return 0; + + // wait for the pulse to stop + while ((*portInputRegister(port) & bit) == stateMask) + width++; + + // convert the reading to microseconds. The loop has been determined + // to be 10 clock cycles long and have about 16 clocks between the edge + // and the start of the loop. There will be some error introduced by + // the interrupt handlers. + return clockCyclesToMicroseconds(width * 10 + 16); +} diff --git a/cores/arduino/wiring_shift.c b/cores/arduino/wiring_shift.c new file mode 100755 index 0000000..956f864 --- /dev/null +++ b/cores/arduino/wiring_shift.c @@ -0,0 +1,40 @@ +/* + wiring_shift.c - shiftOut() function + Part of Arduino - http://www.arduino.cc/ + + Copyright (c) 2005-2006 David A. Mellis + + 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., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ +*/ + +#include "wiring_private.h" + +void shiftOut(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, byte val) +{ + int i; + + for (i = 0; i < 8; i++) { + if (bitOrder == LSBFIRST) + digitalWrite(dataPin, !!(val & (1 << i))); + else + digitalWrite(dataPin, !!(val & (1 << (7 - i)))); + + digitalWrite(clockPin, HIGH); + digitalWrite(clockPin, LOW); + } +} |