diff --git a/adxl335/Makefile b/adxl335/Makefile new file mode 100644 index 0000000..8e1ff66 --- /dev/null +++ b/adxl335/Makefile @@ -0,0 +1,501 @@ +# ---------------------------------------------------------------------------- +# Makefile based on WinAVR Makefile Template written by Eric B. Weddington, +# Jörg Wunsch, et al. +# +# Adjust F_CPU below to the clock frequency in Mhz of your AVR target +# +# Adjust the size of the uart receive and transmit ringbuffer in bytes using +# defines -DUART_RX_BUFFER_SIZE=128 and -DUART_TX_BUFFER_SIZE=128 in the +# CDEF section below +# +#---------------------------------------------------------------------------- +# On command line: +# +# make all = Make software. +# +# make clean = Clean out built project files. +# +# make coff = Convert ELF to AVR COFF. +# +# make extcoff = Convert ELF to AVR Extended COFF. +# +# make program = Download the hex file to the device, using avrdude. +# Please customize the avrdude settings below first! +# +# make debug = Start either simulavr or avarice as specified for debugging, +# with avr-gdb or avr-insight as the front end for debugging. +# +# make filename.s = Just compile filename.c into the assembler code only. +# +# make filename.i = Create a preprocessed source file for use in submitting +# bug reports to the GCC project. +# +# To rebuild project do "make clean" then "make all". +#---------------------------------------------------------------------------- + + +# MCU name +MCU = atmega328p + +# Processor frequency. +# This will define a symbol, F_CPU, in all source code files equal to the +# processor frequency. You can then use this symbol in your source code to +# calculate timings. Do NOT tack on a 'UL' at the end, this will be done +# automatically to create a 32-bit value in your source code. +F_CPU = 16000000 + +# Output format. (can be srec, ihex, binary) +FORMAT = ihex + +# Target file name (without extension). +TARGET = main + +# List C source files here. (C dependencies are automatically generated.) +SRC = $(TARGET).c uart_async.c analog.c + +# List Assembler source files here. +# Make them always end in a capital .S. Files ending in a lowercase .s +# will not be considered source files but generated files (assembler +# output from the compiler), and will be deleted upon "make clean"! +# Even though the DOS/Win* filesystem matches both .s and .S the same, +# it will preserve the spelling of the filenames, and gcc itself does +# care about how the name is spelled on its command-line. +ASRC = + + +# Optimization level, can be [0, 1, 2, 3, s]. +# 0 = turn off optimization. s = optimize for size. +# (Note: 3 is not always the best optimization level. See avr-libc FAQ.) +OPT = s + + +# Debugging format. +# Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs. +# AVR Studio 4.10 requires dwarf-2. +# AVR [Extended] COFF format requires stabs, plus an avr-objcopy run. +DEBUG = dwarf-2 + + +# List any extra directories to look for include files here. +# Each directory must be seperated by a space. +# Use forward slashes for directory separators. +# For a directory that has spaces, enclose it in quotes. +EXTRAINCDIRS = + + +# Compiler flag to set the C Standard level. +# c89 = "ANSI" C +# gnu89 = c89 plus GCC extensions +# c99 = ISO C99 standard (not yet fully implemented) +# gnu99 = c99 plus GCC extensions +CSTANDARD = -std=gnu99 + + +# Place -D or -U options here +CDEFS = -DF_CPU=$(F_CPU)UL + +# uncomment and adapt these line if you want different UART library buffer size +#CDEFS += -DUART_RX_BUFFER_SIZE=128 +#CDEFS += -DUART_TX_BUFFER_SIZE=128 + + +# Place -I options here +CINCS = + + + +#---------------- Compiler Options ---------------- +# -g*: generate debugging information +# -O*: optimization level +# -f...: tuning, see GCC manual and avr-libc documentation +# -Wall...: warning level +# -Wa,...: tell GCC to pass this to the assembler. +# -adhlns...: create assembler listing +CFLAGS = -g$(DEBUG) +CFLAGS += $(CDEFS) $(CINCS) +CFLAGS += -O$(OPT) +CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums +CFLAGS += -Wall -Wstrict-prototypes +CFLAGS += -Wa,-adhlns=$(<:.c=.lst) +CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS)) +CFLAGS += $(CSTANDARD) + + +#---------------- Assembler Options ---------------- +# -Wa,...: tell GCC to pass this to the assembler. +# -ahlms: create listing +# -gstabs: have the assembler create line number information; note that +# for use in COFF files, additional information about filenames +# and function names needs to be present in the assembler source +# files -- see avr-libc docs [FIXME: not yet described there] +ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs + + +#---------------- Library Options ---------------- +# Minimalistic printf version +PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min + +# Floating point printf version (requires MATH_LIB = -lm below) +PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt + +# If this is left blank, then it will use the Standard printf version. +PRINTF_LIB = +#PRINTF_LIB = $(PRINTF_LIB_MIN) +#PRINTF_LIB = $(PRINTF_LIB_FLOAT) + + +# Minimalistic scanf version +SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min + +# Floating point + %[ scanf version (requires MATH_LIB = -lm below) +SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt + +# If this is left blank, then it will use the Standard scanf version. +SCANF_LIB = +#SCANF_LIB = $(SCANF_LIB_MIN) +#SCANF_LIB = $(SCANF_LIB_FLOAT) + + +MATH_LIB = -lm + + + +#---------------- External Memory Options ---------------- + +# 64 KB of external RAM, starting after internal RAM (ATmega128!), +# used for variables (.data/.bss) and heap (malloc()). +#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff + +# 64 KB of external RAM, starting after internal RAM (ATmega128!), +# only used for heap (malloc()). +#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff + +EXTMEMOPTS = + + + +#---------------- Linker Options ---------------- +# -Wl,...: tell GCC to pass this to linker. +# -Map: create map file +# --cref: add cross reference to map file +LDFLAGS = -Wl,-Map=$(TARGET).map,--cref +LDFLAGS += $(EXTMEMOPTS) +LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB) + + + +#---------------- Programming Options (avrdude) ---------------- + +# Programming hardware: alf avr910 avrisp bascom bsd +# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500 +# +# Type: avrdude -c ? +# to get a full listing. +# +AVRDUDE_PROGRAMMER = arduino + +# com1 = serial port. Use lpt1 to connect to parallel port. +AVRDUDE_PORT = /dev/tty.usb* # programmer connected to serial device + +AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex +#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep + + +# Uncomment the following if you want avrdude's erase cycle counter. +# Note that this counter needs to be initialized first using -Yn, +# see avrdude manual. +#AVRDUDE_ERASE_COUNTER = -y + +# Uncomment the following if you do /not/ wish a verification to be +# performed after programming the device. +#AVRDUDE_NO_VERIFY = -V + +# Increase verbosity level. Please use this when submitting bug +# reports about avrdude. See +# to submit bug reports. +#AVRDUDE_VERBOSE = -v -v + +AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) -b 57600 +AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY) +AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE) +AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER) + + + +#---------------- Debugging Options ---------------- + +# For simulavr only - target MCU frequency. +DEBUG_MFREQ = $(F_CPU) + +# Set the DEBUG_UI to either gdb or insight. +# DEBUG_UI = gdb +DEBUG_UI = insight + +# Set the debugging back-end to either avarice, simulavr. +DEBUG_BACKEND = avarice +#DEBUG_BACKEND = simulavr + +# GDB Init Filename. +GDBINIT_FILE = __avr_gdbinit + +# When using avarice settings for the JTAG +JTAG_DEV = /dev/com1 + +# Debugging port used to communicate between GDB / avarice / simulavr. +DEBUG_PORT = 4242 + +# Debugging host used to communicate between GDB / avarice / simulavr, normally +# just set to localhost unless doing some sort of crazy debugging when +# avarice is running on a different computer. +DEBUG_HOST = localhost + + + +#============================================================================ + + +# Define programs and commands. +SHELL = sh +CC = avr-gcc +OBJCOPY = avr-objcopy +OBJDUMP = avr-objdump +SIZE = avr-size +NM = avr-nm +AVRDUDE = avrdude +REMOVE = rm -f +COPY = cp +WINSHELL = cmd + + +# Define Messages +# English +MSG_ERRORS_NONE = Errors: none +MSG_BEGIN = -------- begin -------- +MSG_END = -------- end -------- +MSG_SIZE_BEFORE = Size before: +MSG_SIZE_AFTER = Size after: +MSG_COFF = Converting to AVR COFF: +MSG_EXTENDED_COFF = Converting to AVR Extended COFF: +MSG_FLASH = Creating load file for Flash: +MSG_EEPROM = Creating load file for EEPROM: +MSG_EXTENDED_LISTING = Creating Extended Listing: +MSG_SYMBOL_TABLE = Creating Symbol Table: +MSG_LINKING = Linking: +MSG_COMPILING = Compiling: +MSG_ASSEMBLING = Assembling: +MSG_CLEANING = Cleaning project: + + + + +# Define all object files. +OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) + +# Define all listing files. +LST = $(SRC:.c=.lst) $(ASRC:.S=.lst) + + +# Compiler flags to generate dependency files. +GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d + + +# Combine all necessary flags and optional flags. +# Add target processor to flags. +ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS) +ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) + + + + + +# Default target. +all: begin gccversion sizebefore build sizeafter end + +build: elf hex eep lss sym + +elf: $(TARGET).elf +hex: $(TARGET).hex +eep: $(TARGET).eep +lss: $(TARGET).lss +sym: $(TARGET).sym + + + +# Eye candy. +# AVR Studio 3.x does not check make's exit code but relies on +# the following magic strings to be generated by the compile job. +begin: + @echo + @echo $(MSG_BEGIN) + +end: + @echo $(MSG_END) + @echo + + +# Display size of file. +HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex +ELFSIZE = $(SIZE) -A $(TARGET).elf +AVRMEM = avr-mem.sh $(TARGET).elf $(MCU) + +sizebefore: + @if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \ + $(AVRMEM) 2>/dev/null; echo; fi + +sizeafter: + @if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \ + $(AVRMEM) 2>/dev/null; echo; fi + + + +# Display compiler version information. +gccversion : + @$(CC) --version + + + +# Program the device. +program: $(TARGET).hex $(TARGET).eep + $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) + + +# Generate avr-gdb config/init file which does the following: +# define the reset signal, load the target file, connect to target, and set +# a breakpoint at main(). +gdb-config: + @$(REMOVE) $(GDBINIT_FILE) + @echo define reset >> $(GDBINIT_FILE) + @echo SIGNAL SIGHUP >> $(GDBINIT_FILE) + @echo end >> $(GDBINIT_FILE) + @echo file $(TARGET).elf >> $(GDBINIT_FILE) + @echo target remote $(DEBUG_HOST):$(DEBUG_PORT) >> $(GDBINIT_FILE) +ifeq ($(DEBUG_BACKEND),simulavr) + @echo load >> $(GDBINIT_FILE) +endif + @echo break main >> $(GDBINIT_FILE) + +debug: gdb-config $(TARGET).elf +ifeq ($(DEBUG_BACKEND), avarice) + @echo Starting AVaRICE - Press enter when "waiting to connect" message displays. + @$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \ + $(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT) + @$(WINSHELL) /c pause + +else + @$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \ + $(DEBUG_MFREQ) --port $(DEBUG_PORT) +endif + @$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE) + + + + +# 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: $(TARGET).elf + @echo + @echo $(MSG_COFF) $(TARGET).cof + $(COFFCONVERT) -O coff-avr $< $(TARGET).cof + + +extcoff: $(TARGET).elf + @echo + @echo $(MSG_EXTENDED_COFF) $(TARGET).cof + $(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof + + + +# Create final output files (.hex, .eep) from ELF output file. +%.hex: %.elf + @echo + @echo $(MSG_FLASH) $@ + $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@ + +%.eep: %.elf + @echo + @echo $(MSG_EEPROM) $@ + -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \ + --change-section-lma .eeprom=0 -O $(FORMAT) $< $@ + +# Create extended listing file from ELF output file. +%.lss: %.elf + @echo + @echo $(MSG_EXTENDED_LISTING) $@ + $(OBJDUMP) -h -S $< > $@ + +# Create a symbol table from ELF output file. +%.sym: %.elf + @echo + @echo $(MSG_SYMBOL_TABLE) $@ + $(NM) -n $< > $@ + + + +# Link: create ELF output file from object files. +.SECONDARY : $(TARGET).elf +.PRECIOUS : $(OBJ) +%.elf: $(OBJ) + @echo + @echo $(MSG_LINKING) $@ + $(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS) + + +# Compile: create object files from C source files. +%.o : %.c + @echo + @echo $(MSG_COMPILING) $< + $(CC) -c $(ALL_CFLAGS) $< -o $@ + + +# Compile: create assembler files from C source files. +%.s : %.c + $(CC) -S $(ALL_CFLAGS) $< -o $@ + + +# Assemble: create object files from assembler source files. +%.o : %.S + @echo + @echo $(MSG_ASSEMBLING) $< + $(CC) -c $(ALL_ASFLAGS) $< -o $@ + +# Create preprocessed source for use in sending a bug report. +%.i : %.c + $(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@ + + +# Target: clean project. +clean: begin clean_list end + +clean_list : + @echo + @echo $(MSG_CLEANING) + $(REMOVE) $(TARGET).hex + $(REMOVE) $(TARGET).eep + $(REMOVE) $(TARGET).cof + $(REMOVE) $(TARGET).elf + $(REMOVE) $(TARGET).map + $(REMOVE) $(TARGET).sym + $(REMOVE) $(TARGET).lss + $(REMOVE) $(OBJ) + $(REMOVE) $(LST) + $(REMOVE) $(SRC:.c=.s) + $(REMOVE) $(SRC:.c=.d) + $(REMOVE) .dep/* + + + +# Include the dependency files. +-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*) + + +# Listing of phony targets. +.PHONY : all begin finish end sizebefore sizeafter gccversion \ +build elf hex eep lss sym coff extcoff \ +clean clean_list program debug gdb-config + diff --git a/adxl335/analog.c b/adxl335/analog.c new file mode 100644 index 0000000..e6efd12 --- /dev/null +++ b/adxl335/analog.c @@ -0,0 +1,61 @@ +/* + * Analog to digital conversion routines for Atmel. + * + * Copyright 2011 Mika Tuupola + * + * Licensed under the MIT license: + * http://www.opensource.org/licenses/mit-license.php + * + */ + +#ifndef ADC_REF +#define ADC_REF ADC_REF_VCC +#endif + +#include +#include "analog.h" + +uint16_t analog_read(uint8_t pin) { + + /* Enable ADC and set prescaler. */ + ADCSRA = _BV(ADEN) | ADC_PRESCALER; + + /* Set high speed mode. */ + ADCSRB |= _BV(ADHSM); + + /* Set adc reference and select mux. */ + ADMUX = ADC_REF | (pin & 0b00011111); + + /* Start conversion. */ + ADCSRA |= _BV(ADSC); + + /* Wait until adc has result ready. */ + loop_until_bit_is_clear(ADCSRA, ADSC); + + /* Word! */ + return ADCW; +} + +uint8_t analog_read_byte(uint8_t pin) { + + /* Enable ADC and set prescaler. */ + ADCSRA = _BV(ADEN) | ADC_PRESCALER; + + /* Set high speed mode. */ + ADCSRB |= _BV(ADHSM); + + /* Set adc reference and select mux. */ + ADMUX = ADC_REF | (pin & 0b00011111); + + /* Left adjust the 10 bit result. */ + ADMUX |= (1<. Part of the code from Teensy examples + * by PJRC.COM, LLC. Some minor additions to suite my personal coding + * taste. + * + * http://code.google.com/p/arduino-lite/ + * http://www.csksoft.net/ + * + * Copyright (c) 2010-2011 Shikai Chen, PJRC.COM LLC, Mika Tuupola + * + * Licensed under the LGPL 2.1 license: + * http://www.opensource.org/licenses/lgpl-2.1.php + */ + +#ifndef ANALOG_H +#define ANALOG_H +#include "pins.h" + +#define PWM_ENABLE(pin) EXPAND_WRAPPER(_PWM_ENABLE ,ARDUINOPIN_TO_TCCRID(pin) , ARDUINOPIN_TO_TIMERID(pin) ) +#define PWM_DISABLE(pin) EXPAND_WRAPPER(_PWM_DISABLE ,ARDUINOPIN_TO_TCCRID(pin) , ARDUINOPIN_TO_TIMERID(pin) ) +#define PWM_SET(pin, val) EXPAND_WRAPPER(_PWM_SET, ARDUINOPIN_TO_TIMERID(pin), val ) + +#define analog_write( pin, val ) \ + do{ \ + PWM_ENABLE(pin); \ + PWM_SET(pin,val); \ + } \ + while(0) + +#define PWM_SET_SAFE(pin, val) \ + do{ \ + if (val) {PIN_MODE(pin,OUTPUT);PWM_SET(pin, val);} \ + else PIN_MODE(pin, INPUT); \ + }while(0) + + +uint16_t analog_read(uint8_t pin); +uint8_t analog_read_byte(uint8_t pin); + +#define ADC_REF_VCC (1<. Some minor changes to suite my personal + * coding taste. + * + * http://code.google.com/p/arduino-lite/ + * http://www.csksoft.net/ + * + * Copyright (c) 2010-2011 Shikai Chen + * + * Licensed under the LGPL 2.1 license: + * http://www.opensource.org/licenses/lgpl-2.1.php + */ + +#ifndef DIGITAL_H +#define DIGITAL_H +#include "pins.h" + +#define digital_read(pin) EXPAND_WRAPPER(_D_READ, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) +#define digital_read_raw(pin) EXPAND_WRAPPER(_D_READ_RAW, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) +#define digital_write(pin, val) D_WRITE_##val(pin) + +#endif /* DIGITAL_H */ \ No newline at end of file diff --git a/adxl335/main.c b/adxl335/main.c new file mode 100644 index 0000000..357df95 --- /dev/null +++ b/adxl335/main.c @@ -0,0 +1,79 @@ +/* + * Exercise on Atmel analog to digital conversion by reading the values of + * ADXL335 accelerometer sensor. + * + * There are lot of articles on how Atmel analog to digital conversion works. + * Most of them don't really explain anything. Code is just copied from + * other examples. Only after reading Protostack article I could understand + * the inner workings. Another great source of information is source code + * of ADC driver from Atmel. + * + * http://www.protostack.com/blog/2011/02/analogue-to-digital-conversion-on-an-atmega168/ + * http://www.google.com/search?q=atmel+adc_drv + * + * General information on ADXL335. + * + * http://bildr.org/2011/04/sensing-orientation-with-the-adxl335-arduino/ + * http://www.sparkfun.com/datasheets/Components/SMD/adxl335.pdf + * + * To compile and upload run: make clean; make; make program; + * + * Copyright 2011 Mika Tuupola + * + * Licensed under the MIT license: + * http://www.opensource.org/licenses/mit-license.php + * + */ + +#include +#include +#include +#include +#include + +#include "main.h" +#include "uart.h" +#include "pins.h" +#include "analog.h" + +#define X 0 /* Analog 0 */ +#define Y 1 /* Analog 1 */ +#define Z 2 /* Analog 2 */ + +static void init(void) { + pin_mode(X, INPUT); + pin_mode(Y, INPUT); + pin_mode(Z, INPUT); +} + +int main(void) { + + init(); + uart_init(); + stdout = &uart_output; + stdin = &uart_input; + + while (1) { + + uint16_t x; + uint16_t y; + uint16_t z; + x = analog_read(X); + y = analog_read(Y); + z = analog_read(Z); + printf("word: %d %d %d\n", x, y, z); + + uint16_t x2; + uint16_t y2; + uint16_t z2; + x2 = analog_read_byte(X); + y2 = analog_read_byte(Y); + z2 = analog_read_byte(Z); + printf("byte: %d %d %d\n", x2, y2, z2); + + _delay_ms(200); + + } + return 0; + +} diff --git a/adxl335/main.h b/adxl335/main.h new file mode 100644 index 0000000..6ba754e --- /dev/null +++ b/adxl335/main.h @@ -0,0 +1,2 @@ +static void init(void); +int main(void); diff --git a/adxl335/pins.h b/adxl335/pins.h new file mode 100644 index 0000000..e1afd6a --- /dev/null +++ b/adxl335/pins.h @@ -0,0 +1,567 @@ +/* + * pins.h + * + * Lightweight macro implementation of Arduino style pin numbering + * for AVR microprocessors. Because only thing I want to use from + * Arduino libraries is the pin numbering scheme. + * + * This file taken 99% from the excellent ArduinoLite project by + * Shikai Chen . Some minor changes to suite my personal + * coding taste. + * + * http://code.google.com/p/arduino-lite/ + * http://www.csksoft.net/ + * + * Copyright (c) 2010-2011 Shikai Chen + * + * Licensed under the LGPL 2.1 license: + * http://www.opensource.org/licenses/lgpl-2.1.php + */ + +#ifndef PINS_H +#define PINS_H + + +#define HIGH 0x1 +#define LOW 0x0 + +#define INPUT 0x0 +#define OUTPUT 0x1 + +#define ENABLE 0x1 +#define DISABLE 0x0 + +#define ARDUINOPIN_TO_TIMERID(x) TIMER_AT_PIN_##x +#define ARDUINOPIN_TO_TCCRID(x) TCCR_AT_PIN_##x + +#define ARDUINOPIN_TO_PORTID(x) PORT_AT_PIN_##x +#define ARDUINOPIN_TO_PORTMSK(x) PORTMSK_AT_PIN_##x + +#define PORTID_TO_DIR_REG(x) DIR_REG_AT_##x +#define PORTID_TO_OUTPUT_REG(x) OUTPUT_REG_AT_##x +#define PORTID_TO_INPUT_REG(x) INPUT_REG_AT_##x + +#if defined(__AVR_ATmega1280__) + +#define PORT_AT_PIN_0 PortE // PE 0 ** 0 ** USART0_RX +#define PORT_AT_PIN_1 PortE // PE 1 ** 1 ** USART0_TX +#define PORT_AT_PIN_2 PortE // PE 4 ** 2 ** PWM2 +#define PORT_AT_PIN_3 PortE // PE 5 ** 3 ** PWM3 +#define PORT_AT_PIN_4 PortG // PG 5 ** 4 ** PWM4 +#define PORT_AT_PIN_5 PortE // PE 3 ** 5 ** PWM5 +#define PORT_AT_PIN_6 PortH // PH 3 ** 6 ** PWM6 +#define PORT_AT_PIN_7 PortH // PH 4 ** 7 ** PWM7 +#define PORT_AT_PIN_8 PortH // PH 5 ** 8 ** PWM8 +#define PORT_AT_PIN_9 PortH // PH 6 ** 9 ** PWM9 +#define PORT_AT_PIN_10 PortB // PB 4 ** 10 ** PWM10 +#define PORT_AT_PIN_11 PortB // PB 5 ** 11 ** PWM11 +#define PORT_AT_PIN_12 PortB // PB 6 ** 12 ** PWM12 +#define PORT_AT_PIN_13 PortB // PB 7 ** 13 ** PWM13 +#define PORT_AT_PIN_14 PortJ // PJ 1 ** 14 ** USART3_TX +#define PORT_AT_PIN_15 PortJ // PJ 0 ** 15 ** USART3_RX +#define PORT_AT_PIN_16 PortH // PH 1 ** 16 ** USART2_TX +#define PORT_AT_PIN_17 PortH // PH 0 ** 17 ** USART2_RX +#define PORT_AT_PIN_18 PortD // PD 3 ** 18 ** USART1_TX +#define PORT_AT_PIN_19 PortD // PD 2 ** 19 ** USART1_RX +#define PORT_AT_PIN_20 PortD // PD 1 ** 20 ** I2C_SDA +#define PORT_AT_PIN_21 PortD // PD 0 ** 21 ** I2C_SCL +#define PORT_AT_PIN_22 PortA // PA 0 ** 22 ** D22 +#define PORT_AT_PIN_23 PortA // PA 1 ** 23 ** D23 +#define PORT_AT_PIN_24 PortA // PA 2 ** 24 ** D24 +#define PORT_AT_PIN_25 PortA // PA 3 ** 25 ** D25 +#define PORT_AT_PIN_26 PortA // PA 4 ** 26 ** D26 +#define PORT_AT_PIN_27 PortA // PA 5 ** 27 ** D27 +#define PORT_AT_PIN_28 PortA // PA 6 ** 28 ** D28 +#define PORT_AT_PIN_29 PortA // PA 7 ** 29 ** D29 +#define PORT_AT_PIN_30 PortC // PC 7 ** 30 ** D30 +#define PORT_AT_PIN_31 PortC // PC 6 ** 31 ** D31 +#define PORT_AT_PIN_32 PortC // PC 5 ** 32 ** D32 +#define PORT_AT_PIN_33 PortC // PC 4 ** 33 ** D33 +#define PORT_AT_PIN_34 PortC // PC 3 ** 34 ** D34 +#define PORT_AT_PIN_35 PortC // PC 2 ** 35 ** D35 +#define PORT_AT_PIN_36 PortC // PC 1 ** 36 ** D36 +#define PORT_AT_PIN_37 PortC // PC 0 ** 37 ** D37 +#define PORT_AT_PIN_38 PortD // PD 7 ** 38 ** D38 +#define PORT_AT_PIN_39 PortG // PG 2 ** 39 ** D39 +#define PORT_AT_PIN_40 PortG // PG 1 ** 40 ** D40 +#define PORT_AT_PIN_41 PortG // PG 0 ** 41 ** D41 +#define PORT_AT_PIN_42 PortL // PL 7 ** 42 ** D42 +#define PORT_AT_PIN_43 PortL // PL 6 ** 43 ** D43 +#define PORT_AT_PIN_44 PortL // PL 5 ** 44 ** D44 +#define PORT_AT_PIN_45 PortL // PL 4 ** 45 ** D45 +#define PORT_AT_PIN_46 PortL // PL 3 ** 46 ** D46 +#define PORT_AT_PIN_47 PortL // PL 2 ** 47 ** D47 +#define PORT_AT_PIN_48 PortL // PL 1 ** 48 ** D48 +#define PORT_AT_PIN_49 PortL // PL 0 ** 49 ** D49 +#define PORT_AT_PIN_50 PortB // PB 3 ** 50 ** SPI_MISO +#define PORT_AT_PIN_51 PortB // PB 2 ** 51 ** SPI_MOSI +#define PORT_AT_PIN_52 PortB // PB 1 ** 52 ** SPI_SCK +#define PORT_AT_PIN_53 PortB // PB 0 ** 53 ** SPI_SS +#define PORT_AT_PIN_54 PortF // PF 0 ** 54 ** A0 +#define PORT_AT_PIN_55 PortF // PF 1 ** 55 ** A1 +#define PORT_AT_PIN_56 PortF // PF 2 ** 56 ** A2 +#define PORT_AT_PIN_57 PortF // PF 3 ** 57 ** A3 +#define PORT_AT_PIN_58 PortF // PF 4 ** 58 ** A4 +#define PORT_AT_PIN_59 PortF // PF 5 ** 59 ** A5 +#define PORT_AT_PIN_60 PortF // PF 6 ** 60 ** A6 +#define PORT_AT_PIN_61 PortF // PF 7 ** 61 ** A7 +#define PORT_AT_PIN_62 PortK // PK 0 ** 62 ** A8 +#define PORT_AT_PIN_63 PortK // PK 1 ** 63 ** A9 +#define PORT_AT_PIN_64 PortK // PK 2 ** 64 ** A10 +#define PORT_AT_PIN_65 PortK // PK 3 ** 65 ** A11 +#define PORT_AT_PIN_66 PortK // PK 4 ** 66 ** A12 +#define PORT_AT_PIN_67 PortK // PK 5 ** 67 ** A13 +#define PORT_AT_PIN_68 PortK // PK 6 ** 68 ** A14 +#define PORT_AT_PIN_69 PortK // PK 7 ** 69 ** A15 + +#define PORTMSK_AT_PIN_0 _BV( 0 ) // PE 0 ** 0 ** USART0_RX +#define PORTMSK_AT_PIN_1 _BV( 1 ) // PE 1 ** 1 ** USART0_TX +#define PORTMSK_AT_PIN_2 _BV( 4 ) // PE 4 ** 2 ** PWM2 +#define PORTMSK_AT_PIN_3 _BV( 5 ) // PE 5 ** 3 ** PWM3 +#define PORTMSK_AT_PIN_4 _BV( 5 ) // PG 5 ** 4 ** PWM4 +#define PORTMSK_AT_PIN_5 _BV( 3 ) // PE 3 ** 5 ** PWM5 +#define PORTMSK_AT_PIN_6 _BV( 3 ) // PH 3 ** 6 ** PWM6 +#define PORTMSK_AT_PIN_7 _BV( 4 ) // PH 4 ** 7 ** PWM7 +#define PORTMSK_AT_PIN_8 _BV( 5 ) // PH 5 ** 8 ** PWM8 +#define PORTMSK_AT_PIN_9 _BV( 6 ) // PH 6 ** 9 ** PWM9 +#define PORTMSK_AT_PIN_10 _BV( 4 ) // PB 4 ** 10 ** PWM10 +#define PORTMSK_AT_PIN_11 _BV( 5 ) // PB 5 ** 11 ** PWM11 +#define PORTMSK_AT_PIN_12 _BV( 6 ) // PB 6 ** 12 ** PWM12 +#define PORTMSK_AT_PIN_13 _BV( 7 ) // PB 7 ** 13 ** PWM13 +#define PORTMSK_AT_PIN_14 _BV( 1 ) // PJ 1 ** 14 ** USART3_TX +#define PORTMSK_AT_PIN_15 _BV( 0 ) // PJ 0 ** 15 ** USART3_RX +#define PORTMSK_AT_PIN_16 _BV( 1 ) // PH 1 ** 16 ** USART2_TX +#define PORTMSK_AT_PIN_17 _BV( 0 ) // PH 0 ** 17 ** USART2_RX +#define PORTMSK_AT_PIN_18 _BV( 3 ) // PD 3 ** 18 ** USART1_TX +#define PORTMSK_AT_PIN_19 _BV( 2 ) // PD 2 ** 19 ** USART1_RX +#define PORTMSK_AT_PIN_20 _BV( 1 ) // PD 1 ** 20 ** I2C_SDA +#define PORTMSK_AT_PIN_21 _BV( 0 ) // PD 0 ** 21 ** I2C_SCL +#define PORTMSK_AT_PIN_22 _BV( 0 ) // PA 0 ** 22 ** D22 +#define PORTMSK_AT_PIN_23 _BV( 1 ) // PA 1 ** 23 ** D23 +#define PORTMSK_AT_PIN_24 _BV( 2 ) // PA 2 ** 24 ** D24 +#define PORTMSK_AT_PIN_25 _BV( 3 ) // PA 3 ** 25 ** D25 +#define PORTMSK_AT_PIN_26 _BV( 4 ) // PA 4 ** 26 ** D26 +#define PORTMSK_AT_PIN_27 _BV( 5 ) // PA 5 ** 27 ** D27 +#define PORTMSK_AT_PIN_28 _BV( 6 ) // PA 6 ** 28 ** D28 +#define PORTMSK_AT_PIN_29 _BV( 7 ) // PA 7 ** 29 ** D29 +#define PORTMSK_AT_PIN_30 _BV( 7 ) // PC 7 ** 30 ** D30 +#define PORTMSK_AT_PIN_31 _BV( 6 ) // PC 6 ** 31 ** D31 +#define PORTMSK_AT_PIN_32 _BV( 5 ) // PC 5 ** 32 ** D32 +#define PORTMSK_AT_PIN_33 _BV( 4 ) // PC 4 ** 33 ** D33 +#define PORTMSK_AT_PIN_34 _BV( 3 ) // PC 3 ** 34 ** D34 +#define PORTMSK_AT_PIN_35 _BV( 2 ) // PC 2 ** 35 ** D35 +#define PORTMSK_AT_PIN_36 _BV( 1 ) // PC 1 ** 36 ** D36 +#define PORTMSK_AT_PIN_37 _BV( 0 ) // PC 0 ** 37 ** D37 +#define PORTMSK_AT_PIN_38 _BV( 7 ) // PD 7 ** 38 ** D38 +#define PORTMSK_AT_PIN_39 _BV( 2 ) // PG 2 ** 39 ** D39 +#define PORTMSK_AT_PIN_40 _BV( 1 ) // PG 1 ** 40 ** D40 +#define PORTMSK_AT_PIN_41 _BV( 0 ) // PG 0 ** 41 ** D41 +#define PORTMSK_AT_PIN_42 _BV( 7 ) // PL 7 ** 42 ** D42 +#define PORTMSK_AT_PIN_43 _BV( 6 ) // PL 6 ** 43 ** D43 +#define PORTMSK_AT_PIN_44 _BV( 5 ) // PL 5 ** 44 ** D44 +#define PORTMSK_AT_PIN_45 _BV( 4 ) // PL 4 ** 45 ** D45 +#define PORTMSK_AT_PIN_46 _BV( 3 ) // PL 3 ** 46 ** D46 +#define PORTMSK_AT_PIN_47 _BV( 2 ) // PL 2 ** 47 ** D47 +#define PORTMSK_AT_PIN_48 _BV( 1 ) // PL 1 ** 48 ** D48 +#define PORTMSK_AT_PIN_49 _BV( 0 ) // PL 0 ** 49 ** D49 +#define PORTMSK_AT_PIN_50 _BV( 3 ) // PB 3 ** 50 ** SPI_MISO +#define PORTMSK_AT_PIN_51 _BV( 2 ) // PB 2 ** 51 ** SPI_MOSI +#define PORTMSK_AT_PIN_52 _BV( 1 ) // PB 1 ** 52 ** SPI_SCK +#define PORTMSK_AT_PIN_53 _BV( 0 ) // PB 0 ** 53 ** SPI_SS +#define PORTMSK_AT_PIN_54 _BV( 0 ) // PF 0 ** 54 ** A0 +#define PORTMSK_AT_PIN_55 _BV( 1 ) // PF 1 ** 55 ** A1 +#define PORTMSK_AT_PIN_56 _BV( 2 ) // PF 2 ** 56 ** A2 +#define PORTMSK_AT_PIN_57 _BV( 3 ) // PF 3 ** 57 ** A3 +#define PORTMSK_AT_PIN_58 _BV( 4 ) // PF 4 ** 58 ** A4 +#define PORTMSK_AT_PIN_59 _BV( 5 ) // PF 5 ** 59 ** A5 +#define PORTMSK_AT_PIN_60 _BV( 6 ) // PF 6 ** 60 ** A6 +#define PORTMSK_AT_PIN_61 _BV( 7 ) // PF 7 ** 61 ** A7 +#define PORTMSK_AT_PIN_62 _BV( 0 ) // PK 0 ** 62 ** A8 +#define PORTMSK_AT_PIN_63 _BV( 1 ) // PK 1 ** 63 ** A9 +#define PORTMSK_AT_PIN_64 _BV( 2 ) // PK 2 ** 64 ** A10 +#define PORTMSK_AT_PIN_65 _BV( 3 ) // PK 3 ** 65 ** A11 +#define PORTMSK_AT_PIN_66 _BV( 4 ) // PK 4 ** 66 ** A12 +#define PORTMSK_AT_PIN_67 _BV( 5 ) // PK 5 ** 67 ** A13 +#define PORTMSK_AT_PIN_68 _BV( 6 ) // PK 6 ** 68 ** A14 +#define PORTMSK_AT_PIN_69 _BV( 7 ) // PK 7 ** 69 ** A15 + +////////////Arduino pin to Timer Regs mapping +#define TIMER_AT_PIN_2 3B +#define TCCR_AT_PIN_2 TCCR3A + +#define TIMER_AT_PIN_3 3C +#define TCCR_AT_PIN_3 TCCR3A + +#define TIMER_AT_PIN_4 0B +#define TCCR_AT_PIN_4 TCCR0A + +#define TIMER_AT_PIN_5 3A +#define TCCR_AT_PIN_5 TCCR3A + +#define TIMER_AT_PIN_6 4A +#define TCCR_AT_PIN_6 TCCR4A + +#define TIMER_AT_PIN_7 4B +#define TCCR_AT_PIN_7 TCCR4A + +#define TIMER_AT_PIN_8 4C +#define TCCR_AT_PIN_8 TCCR4A + +#define TIMER_AT_PIN_9 2B +#define TCCR_AT_PIN_9 TCCR2A + +#define TIMER_AT_PIN_10 2A +#define TCCR_AT_PIN_10 TCCR2A + +#define TIMER_AT_PIN_11 1A +#define TCCR_AT_PIN_11 TCCR1A + +#define TIMER_AT_PIN_12 1B +#define TCCR_AT_PIN_12 TCCR1A + +#define TIMER_AT_PIN_13 0A +#define TCCR_AT_PIN_13 TCCR0A + +#define TIMER_AT_PIN_44 5C +#define TCCR_AT_PIN_44 TCCR5A + +#define TIMER_AT_PIN_45 5B +#define TCCR_AT_PIN_45 TCCR5A + +#define TIMER_AT_PIN_46 5A +#define TCCR_AT_PIN_46 TCCR5A + + +////////////PORT to DDRX mapping +#define DIR_REG_AT_PortA DDRA +#define DIR_REG_AT_PortB DDRB +#define DIR_REG_AT_PortC DDRC +#define DIR_REG_AT_PortD DDRD +#define DIR_REG_AT_PortE DDRE +#define DIR_REG_AT_PortF DDRF +#define DIR_REG_AT_PortG DDRG +#define DIR_REG_AT_PortH DDRH + +#define DIR_REG_AT_PortJ DDRJ +#define DIR_REG_AT_PortK DDRK +#define DIR_REG_AT_PortL DDRL + +////////////PORT to PORTX mapping +#define OUTPUT_REG_AT_PortA PORTA +#define OUTPUT_REG_AT_PortB PORTB +#define OUTPUT_REG_AT_PortC PORTC +#define OUTPUT_REG_AT_PortD PORTD +#define OUTPUT_REG_AT_PortE PORTE +#define OUTPUT_REG_AT_PortF PORTF +#define OUTPUT_REG_AT_PortG PORTG +#define OUTPUT_REG_AT_PortH PORTH + +#define OUTPUT_REG_AT_PortJ PORTJ +#define OUTPUT_REG_AT_PortK PORTK +#define OUTPUT_REG_AT_PortL PORTL + +////////////PORT to PINX(input regs) mapping +#define INPUT_REG_AT_PortA PINA +#define INPUT_REG_AT_PortB PINB +#define INPUT_REG_AT_PortC PINC +#define INPUT_REG_AT_PortD PIND +#define INPUT_REG_AT_PortE PINE +#define INPUT_REG_AT_PortF PINF +#define INPUT_REG_AT_PortG PING +#define INPUT_REG_AT_PortH PINH + +#define INPUT_REG_AT_PortJ PINJ +#define INPUT_REG_AT_PortK PINK +#define INPUT_REG_AT_PortL PINL + +#else /* not __AVR_ATmega1280__ */ + +#if defined(__AVR_ATtiny2313__) +//no PortC on tiny2313 +//Pin[0-6] -> PortD[0-6] +#define PORT_AT_PIN_0 PortD /* 0 */ +#define PORT_AT_PIN_1 PortD +#define PORT_AT_PIN_2 PortD +#define PORT_AT_PIN_3 PortD +#define PORT_AT_PIN_4 PortD +#define PORT_AT_PIN_5 PortD +#define PORT_AT_PIN_6 PortD + +//Pin[7-14] -> PortB[0-7] +#define PORT_AT_PIN_7 PortB +#define PORT_AT_PIN_8 PortB /* 8 */ +#define PORT_AT_PIN_9 PortB +#define PORT_AT_PIN_10 PortB +#define PORT_AT_PIN_11 PortB +#define PORT_AT_PIN_12 PortB +#define PORT_AT_PIN_13 PortB +#define PORT_AT_PIN_14 PortB + +#elif defined(__AVR_ATtiny26__) + +//Pin[0-6] -> PortD[0-6] +#define PORT_AT_PIN_0 PortB /* 0 */ +#define PORT_AT_PIN_1 PortB +#define PORT_AT_PIN_2 PortB +#define PORT_AT_PIN_3 PortB +#define PORT_AT_PIN_4 PortB +#define PORT_AT_PIN_5 PortB +#define PORT_AT_PIN_6 PortB + + +//D[7-13] and A[0-9] share the same pins on Attiny26 +#define PORT_AT_PIN_7 PortA /* 0 */ +#define PORT_AT_PIN_8 PortA +#define PORT_AT_PIN_9 PortA +#define PORT_AT_PIN_10 PortA +#define PORT_AT_PIN_11 PortA +#define PORT_AT_PIN_12 PortA +#define PORT_AT_PIN_13 PortA + +#else // Atmega8 / Atmegax8 +#define PORT_AT_PIN_0 PortD /* 0 */ +#define PORT_AT_PIN_1 PortD +#define PORT_AT_PIN_2 PortD +#define PORT_AT_PIN_3 PortD +#define PORT_AT_PIN_4 PortD +#define PORT_AT_PIN_5 PortD +#define PORT_AT_PIN_6 PortD +#define PORT_AT_PIN_7 PortD +#define PORT_AT_PIN_8 PortB /* 8 */ +#define PORT_AT_PIN_9 PortB +#define PORT_AT_PIN_10 PortB +#define PORT_AT_PIN_11 PortB +#define PORT_AT_PIN_12 PortB +#define PORT_AT_PIN_13 PortB +#define PORT_AT_PIN_14 PortC /* 14 */ +#define PORT_AT_PIN_15 PortC +#define PORT_AT_PIN_16 PortC +#define PORT_AT_PIN_17 PortC +#define PORT_AT_PIN_18 PortC +#define PORT_AT_PIN_19 PortC + +#define PORT_AT_PIN_20 PortB +#define PORT_AT_PIN_21 PortB +#endif + + +#if defined(__AVR_ATtiny2313__) +#define PORTMSK_AT_PIN_0 _BV(0) +#define PORTMSK_AT_PIN_1 _BV(1) +#define PORTMSK_AT_PIN_2 _BV(2) +#define PORTMSK_AT_PIN_3 _BV(3) +#define PORTMSK_AT_PIN_4 _BV(4) +#define PORTMSK_AT_PIN_5 _BV(5) +#define PORTMSK_AT_PIN_6 _BV(6) +#define PORTMSK_AT_PIN_7 _BV(0) +#define PORTMSK_AT_PIN_8 _BV(1) +#define PORTMSK_AT_PIN_9 _BV(2) +#define PORTMSK_AT_PIN_10 _BV(3) +#define PORTMSK_AT_PIN_11 _BV(4) +#define PORTMSK_AT_PIN_12 _BV(5) +#define PORTMSK_AT_PIN_13 _BV(6) +#define PORTMSK_AT_PIN_14 _BV(7) + +#elif defined(__AVR_ATtiny26__) + +#define PORTMSK_AT_PIN_0 _BV(0) +#define PORTMSK_AT_PIN_1 _BV(1) +#define PORTMSK_AT_PIN_2 _BV(2) +#define PORTMSK_AT_PIN_3 _BV(3) +#define PORTMSK_AT_PIN_4 _BV(4) +#define PORTMSK_AT_PIN_5 _BV(5) +#define PORTMSK_AT_PIN_6 _BV(6) +#define PORTMSK_AT_PIN_7 _BV(0) +#define PORTMSK_AT_PIN_8 _BV(1) +#define PORTMSK_AT_PIN_9 _BV(2) +#define PORTMSK_AT_PIN_10 _BV(3) +#define PORTMSK_AT_PIN_11 _BV(4) +#define PORTMSK_AT_PIN_12 _BV(5) +#define PORTMSK_AT_PIN_13 _BV(6) + +#else //Atmega8/ Atmegax8 +#define PORTMSK_AT_PIN_0 _BV(0) /* 0 port D */ +#define PORTMSK_AT_PIN_1 _BV(1) +#define PORTMSK_AT_PIN_2 _BV(2) +#define PORTMSK_AT_PIN_3 _BV(3) +#define PORTMSK_AT_PIN_4 _BV(4) +#define PORTMSK_AT_PIN_5 _BV(5) +#define PORTMSK_AT_PIN_6 _BV(6) +#define PORTMSK_AT_PIN_7 _BV(7) +#define PORTMSK_AT_PIN_8 _BV(0) /* 8 port B */ +#define PORTMSK_AT_PIN_9 _BV(1) +#define PORTMSK_AT_PIN_10 _BV(2) +#define PORTMSK_AT_PIN_11 _BV(3) +#define PORTMSK_AT_PIN_12 _BV(4) +#define PORTMSK_AT_PIN_13 _BV(5) +#define PORTMSK_AT_PIN_14 _BV(0) /* 14 port C */ +#define PORTMSK_AT_PIN_15 _BV(1) +#define PORTMSK_AT_PIN_16 _BV(2) +#define PORTMSK_AT_PIN_17 _BV(3) +#define PORTMSK_AT_PIN_18 _BV(4) +#define PORTMSK_AT_PIN_19 _BV(5) + +#define PORTMSK_AT_PIN_20 _BV(6) +#define PORTMSK_AT_PIN_21 _BV(7) +#endif +////////////PORT to DDRX mapping +#define DIR_REG_AT_PortA DDRA + +#define DIR_REG_AT_PortB DDRB + +#if defined(__AVR_ATtiny2313__) +//no PortC on tiny2313 +#else +#define DIR_REG_AT_PortC DDRC +#endif + +#define DIR_REG_AT_PortD DDRD + +////////////PORT to PORTX mapping +#define OUTPUT_REG_AT_PortA PORTA +#define OUTPUT_REG_AT_PortB PORTB + +#if defined(__AVR_ATtiny2313__) +//no PortC on tiny2313 +#else +#define OUTPUT_REG_AT_PortC PORTC +#endif + +#define OUTPUT_REG_AT_PortD PORTD + +////////////PORT to PINX(input regs) mapping +#define INPUT_REG_AT_PortA PINA + +#define INPUT_REG_AT_PortB PINB + +#if defined(__AVR_ATtiny2313__) +//no PortC on tiny2313 +#else +#define INPUT_REG_AT_PortC PINC +#endif + +#define INPUT_REG_AT_PortD PIND + + +#if defined(__AVR_ATtiny2313__) + +#define TIMER_AT_PIN_5 0B +#define TCCR_AT_PIN_5 TCCR0A + +#define TIMER_AT_PIN_9 0A +#define TCCR_AT_PIN_9 TCCR0A + +#define TIMER_AT_PIN_10 1A +#define TCCR_AT_PIN_10 TCCR1A + +#define TIMER_AT_PIN_11 1B +#define TCCR_AT_PIN_11 TCCR1A + +#elif defined(__AVR_ATtiny26__) +/* +#define TIMER_AT_PIN_0 1A +#define TCCR_AT_PIN_0 TCCR1A +*/ +#define TIMER_AT_PIN_1 1A +#define TCCR_AT_PIN_1 TCCR1A +/* +#define TIMER_AT_PIN_2 1B +#define TCCR_AT_PIN_2 TCCR1A +*/ +#define TIMER_AT_PIN_3 1B +#define TCCR_AT_PIN_3 TCCR1A + +#else + +#if !defined(__AVR_ATmega8__) //for Atmega48/88/168/328 +#define TIMER_AT_PIN_3 2B +#define TCCR_AT_PIN_3 TCCR2A + +#define TIMER_AT_PIN_5 0B +#define TCCR_AT_PIN_5 TCCR0A + +#define TIMER_AT_PIN_6 0A +#define TCCR_AT_PIN_6 TCCR0A +#endif + +#define TIMER_AT_PIN_9 1A +#define TCCR_AT_PIN_9 TCCR1A + +#define TIMER_AT_PIN_10 1B +#define TCCR_AT_PIN_10 TCCR1A + +#if defined(__AVR_ATmega8__) +#define TIMER_AT_PIN_11 2 +#define TCCR_AT_PIN_11 TCCR2 +#else //for Atmega48/88/168/328 +#define TIMER_AT_PIN_11 2A +#define TCCR_AT_PIN_11 TCCR2A +#endif + +#endif + +#endif + + + +#define MERGE_TO_FUNC(prefix, id) prefix##_##id +#define EXPAND_WRAPPER( NEXTLEVEL, ...) NEXTLEVEL( __VA_ARGS__ ) + + + +#define _PWM_SET(id, val) \ + do{ \ + OCR##id = val; \ + } \ + while(0) + +#define _PWM_ENABLE(TCCR, id) sbi(TCCR, COM##id##1) +#define _PWM_DISABLE(TCCR, id) cbi(TCCR, COM##id##1) + +#define _SET_OUTPUT(port_id, msk) PORTID_TO_DIR_REG(port_id) |= (msk) +#define _SET_INTPUT(port_id, msk) PORTID_TO_DIR_REG(port_id) &= ~(msk) + +#define _D_WRITE_HIGH(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) |= (msk) +#define _D_WRITE_LOW(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) &= ~(msk) + +#define _D_READ_RAW(port_id, msk) ((PORTID_TO_INPUT_REG(port_id)) & (msk)) +#define _D_READ(port_id, msk) (((PORTID_TO_INPUT_REG(port_id)) & (msk)) != 0 ? 1 : 0) + +#define _D_TOGGLE(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) ^= (msk) +/* + * + * NOTICE: for pins at timer0A/0B, + * if the duty cycle to be set equals to zero, using the following code: + * DIGITAL_WRITE(pin, LOW); + * -- or -- + * digitalWrite(pin, LOW); + * The caller should make sure the current pin has been set to OUTPUT mode first + */ + +#define SET_1(pin) SET_OUTPUT(pin) +#define SET_0(pin) SET_INPUT(pin) + +#define SET_0x1(pin) SET_OUTPUT(pin) +#define SET_0x0(pin) SET_INPUT(pin) + +#define D_WRITE_HIGH(pin) EXPAND_WRAPPER(_D_WRITE_HIGH, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) +#define D_WRITE_LOW(pin) EXPAND_WRAPPER(_D_WRITE_LOW, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) + +#define D_WRITE_1(pin) D_WRITE_HIGH(pin) +#define D_WRITE_0(pin) D_WRITE_LOW(pin) + +#define D_WRITE_0x1(pin) D_WRITE_HIGH(pin) +#define D_WRITE_0x0(pin) D_WRITE_LOW(pin) + +#define D_WRITE_ENABLE(pin) D_WRITE_HIGH(pin) +#define D_WRITE_DISABLE(pin) D_WRITE_LOW(pin) + +#define SET_OUTPUT(pin) EXPAND_WRAPPER(_SET_OUTPUT, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) +#define SET_INPUT(pin) EXPAND_WRAPPER(_SET_INTPUT, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) + +#define pin_mode(pin, mode) SET_##mode(pin) +#define pin_pullup(pin, val) D_WRITE_##val(pin) +#define pin_toggle(pin) EXPAND_WRAPPER(_D_TOGGLE, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) ) + + +#endif /* PINS_H */ diff --git a/adxl335/uart.h b/adxl335/uart.h new file mode 100644 index 0000000..20ed356 --- /dev/null +++ b/adxl335/uart.h @@ -0,0 +1,12 @@ +int uart_putchar(char c, FILE *stream); +int uart_getchar(FILE *stream); + +void uart_init(void); + +struct rx_ring; +struct tx_ring; + +/* http://www.ermicro.com/blog/?p=325 */ + +FILE uart_output = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE); +FILE uart_input = FDEV_SETUP_STREAM(NULL, uart_getchar, _FDEV_SETUP_READ); diff --git a/adxl335/uart_async.c b/adxl335/uart_async.c new file mode 100644 index 0000000..e56fa46 --- /dev/null +++ b/adxl335/uart_async.c @@ -0,0 +1,102 @@ +/* Based on Atmel Application Note AVR 306 */ + +#include +#include +#include + +#ifndef BAUD +#define BAUD 9600 +#endif +#include + +#ifndef UART_RX_BUFFER_SIZE +#define UART_RX_BUFFER_SIZE 32 +#endif + +#ifndef UART_TX_BUFFER_SIZE +#define UART_TX_BUFFER_SIZE 256 +#endif + +struct tx_ring { + int buffer[UART_TX_BUFFER_SIZE]; + int start; + int end; +}; + +struct rx_ring { + int buffer[UART_RX_BUFFER_SIZE]; + int start; + int end; +}; + +static struct tx_ring tx_buffer; +static struct rx_ring rx_buffer; + +/* http://www.cs.mun.ca/~rod/Winter2007/4723/notes/serial/serial.html */ + +void uart_init(void) { + + tx_buffer.start = 0; + tx_buffer.end = 0; + + rx_buffer.start = 0; + rx_buffer.end = 0; + + UBRR0H = UBRRH_VALUE; + UBRR0L = UBRRL_VALUE; + + UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); /* 8-bit data */ + UCSR0B = _BV(RXEN0) | _BV(TXEN0); /* Enable RX and TX */ + + sei(); +} + +int uart_putchar(char c, FILE *stream) { + if (c == '\n') { + uart_putchar('\r', stream); + } + + int write_pointer = (tx_buffer.end + 1) % UART_TX_BUFFER_SIZE; + + if (write_pointer != tx_buffer.start){ + tx_buffer.buffer[tx_buffer.end] = c; + tx_buffer.end = write_pointer; + + /* Data available. Enable the transmit interrupt for serial port 0. */ + UCSR0B |= _BV(UDRIE0); + } + + return 0; +} + +int uart_getchar(FILE *stream) { + int read_pointer = (rx_buffer.start + 1) % UART_RX_BUFFER_SIZE; + + rx_buffer.start = read_pointer; + return rx_buffer.buffer[read_pointer]; +} + +ISR(USART_RX_vect) { + int write_pointer = (rx_buffer.end + 1) % UART_RX_BUFFER_SIZE; + + /* Add next byte to ringbuffer if it has space available. */ + if (write_pointer != rx_buffer.start){ + rx_buffer.buffer[rx_buffer.end] = UDR0; + rx_buffer.end = write_pointer; + } +} + +ISR(USART_UDRE_vect){ + int read_pointer = (tx_buffer.start + 1) % UART_TX_BUFFER_SIZE; + + /* Transmit next byte if data available in ringbuffer. */ + if (read_pointer != tx_buffer.end) { + UDR0 = tx_buffer.buffer[read_pointer]; + tx_buffer.start = read_pointer; + } else { + /* Nothing to send. Disable the transmit interrupt for serial port 0. */ + UCSR0B &= ~_BV(UDRIE0); + } +} + +