From 3ff314e1e7a1bd80a8a8a87fc945b80ffa35f5bd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lucas=20Ple=C3=9F?= Date: Sat, 24 Nov 2012 14:17:10 +0100 Subject: [PATCH] moved firmware --- Makefile | 425 --------------------------- lcd_routines.c | 185 ------------ lcd_routines.h | 158 ---------- main.c | 140 --------- main.hex | 96 ------ uart.c | 776 ------------------------------------------------- uart.h | 248 ---------------- 7 files changed, 2028 deletions(-) delete mode 100644 Makefile delete mode 100644 lcd_routines.c delete mode 100644 lcd_routines.h delete mode 100644 main.c delete mode 100644 main.hex delete mode 100644 uart.c delete mode 100644 uart.h diff --git a/Makefile b/Makefile deleted file mode 100644 index 3dc7131..0000000 --- a/Makefile +++ /dev/null @@ -1,425 +0,0 @@ -# Hey Emacs, this is a -*- makefile -*- -# -# WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al. -# Released to the Public Domain -# Please read the make user manual! -# -# Additional material for this makefile was submitted by: -# Tim Henigan -# Peter Fleury -# Reiner Patommel -# Sander Pool -# Frederik Rouleau -# Markus Pfaff -# -# On command line: -# -# make all = Make software. -# -# make clean = Clean out built project files. -# -# make coff = Convert ELF to AVR COFF (for use with AVR Studio 3.x or VMLAB). -# -# make extcoff = Convert ELF to AVR Extended COFF (for use with AVR Studio -# 4.07 or greater). -# -# make program = Download the hex file to the device, using avrdude. Please -# customize the avrdude settings below first! -# -# make filename.s = Just compile filename.c into the assembler code only -# -# To rebuild project do "make clean" then "make all". -# - - -# MCU name -MCU = atmega16 - -# 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 = $(TARGET).c lcd_routines.c uart.c - - -# List Assembler source files here. -# Make them always end in a capital .S. Files ending in a lowercase .s -# will not be considered source files but generated files (assembler -# output from the compiler), and will be deleted upon "make clean"! -# Even though the DOS/Win* filesystem matches both .s and .S the same, -# it will preserve the spelling of the filenames, and gcc itself does -# care about how the name is spelled on its command-line. -ASRC = - - - -# Optimization level, can be [0, 1, 2, 3, s]. -# 0 = turn off optimization. s = optimize for size. -# (Note: 3 is not always the best optimization level. See avr-libc FAQ.) -OPT = s - -# Debugging format. -# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2. -# AVR (extended) COFF requires stabs, plus an avr-objcopy run. -DEBUG = dwarf-2 - -# List any extra directories to look for include files here. -# Each directory must be seperated by a space. -EXTRAINCDIRS = - - -# Compiler flag to set the C Standard level. -# c89 - "ANSI" C -# gnu89 - c89 plus GCC extensions -# c99 - ISO C99 standard (not yet fully implemented) -# gnu99 - c99 plus GCC extensions -CSTANDARD = -std=gnu99 - -# Place -D or -U options here -CDEFS = - -# Place -I options here -CINCS = - - -# Compiler flags. -# -g*: generate debugging information -# -O*: optimization level -# -f...: tuning, see GCC manual and avr-libc documentation -# -Wall...: warning level -# -Wa,...: tell GCC to pass this to the assembler. -# -adhlns...: create assembler listing -CFLAGS = -g$(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 += $(CSTANDARD) - - - -# Assembler flags. -# -Wa,...: tell GCC to pass this to the assembler. -# -ahlms: create listing -# -gstabs: have the assembler create line number information; note that -# for use in COFF files, additional information about filenames -# and function names needs to be present in the assembler source -# files -- see avr-libc docs [FIXME: not yet described there] -ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs - - - -#Additional libraries. - -# 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 - -PRINTF_LIB = - -# 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 - -SCANF_LIB = - -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 flags. -# -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) $(MATH_LIB) - - - - -# Programming support using avrdude. Settings and variables. - -# Programming hardware: alf avr910 avrisp bascom bsd -# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500 -# -# Type: avrdude -c ? -# to get a full listing. -# -AVRDUDE_PROGRAMMER = usbasp - -# com1 = serial port. Use lpt1 to connect to parallel port. -AVRDUDE_PORT = com1 # programmer connected to serial device - -AVRDUDE_WRITE_FLASH = -U flash:w:$(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) -c $(AVRDUDE_PROGRAMMER) -AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY) -AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE) -AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER) - - - -# --------------------------------------------------------------------------- - -# Define directories, if needed. -DIRAVR = c:/winavr -DIRAVRBIN = $(DIRAVR)/bin -DIRAVRUTILS = $(DIRAVR)/utils/bin -DIRINC = . -DIRLIB = $(DIRAVR)/avr/lib - - -# 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 - - - - -# 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 = $(ASRC:.S=.lst) $(SRC:.c=.lst) - - -# Compiler flags to generate dependency files. -GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-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 finished 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) - -finished: - @echo $(MSG_ERRORS_NONE) - -end: - @echo $(MSG_END) - @echo - - -# Display size of file. -HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex -ELFSIZE = $(SIZE) -A $(TARGET).elf -sizebefore: - @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi - -sizeafter: - @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi - - - -# Display compiler version information. -gccversion : - @$(CC) --version - - - -# Program the device. -program: $(TARGET).hex $(TARGET).eep - $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) - - - - -# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB. -COFFCONVERT=$(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) $(OBJ) --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 $@ - - - -# Target: clean project. -clean: begin clean_list finished end - -clean_list : - @echo - @echo $(MSG_CLEANING) - $(REMOVE) $(TARGET).hex - $(REMOVE) $(TARGET).eep - $(REMOVE) $(TARGET).obj - $(REMOVE) $(TARGET).cof - $(REMOVE) $(TARGET).elf - $(REMOVE) $(TARGET).map - $(REMOVE) $(TARGET).obj - $(REMOVE) $(TARGET).a90 - $(REMOVE) $(TARGET).sym - $(REMOVE) $(TARGET).lnk - $(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 - diff --git a/lcd_routines.c b/lcd_routines.c deleted file mode 100644 index 42bf7fa..0000000 --- a/lcd_routines.c +++ /dev/null @@ -1,185 +0,0 @@ -// Ansteuerung eines HD44780 kompatiblen LCD im 4-Bit-Interfacemodus -// http://www.mikrocontroller.net/articles/HD44780 -// http://www.mikrocontroller.net/articles/AVR-GCC-Tutorial/LCD-Ansteuerung -// -// Die Pinbelegung ist über defines in lcd-routines.h einstellbar - -#include -#include -#include "lcd_routines.h" -#include - -//////////////////////////////////////////////////////////////////////////////// -// Erzeugt einen Enable-Puls -static void lcd_enable( void ) -{ - LCD_PORT |= (1<>(4-LCD_DB)); // Maske löschen - LCD_PORT |= (data>>(4-LCD_DB)); // Bits setzen - lcd_enable(); -} - -//////////////////////////////////////////////////////////////////////////////// -// Initialisierung: muss ganz am Anfang des Programms aufgerufen werden. -void lcd_init( void ) -{ - // verwendete Pins auf Ausgang schalten - uint8_t pins = (0x0F << LCD_DB) | // 4 Datenleitungen - (1< PORTD Bit PD0-PD3 -#define LCD_PORT PORTA -#define LCD_DDR DDRA -#define LCD_DB PA0 - -// LCD RS <--> PORTD Bit PD4 (RS: 1=Data, 0=Command) -#define LCD_RS PA4 - -// LCD EN <--> PORTD Bit PD5 (EN: 1-Impuls für Daten) -#define LCD_EN PA5 - -//////////////////////////////////////////////////////////////////////////////// -// LCD Ausführungszeiten (MS=Millisekunden, US=Mikrosekunden) - -#define LCD_BOOTUP_MS 15 -#define LCD_ENABLE_US 20 -#define LCD_WRITEDATA_US 46 -#define LCD_COMMAND_US 42 - -#define LCD_SOFT_RESET_MS1 5 -#define LCD_SOFT_RESET_MS2 1 -#define LCD_SOFT_RESET_MS3 1 -#define LCD_SET_4BITMODE_MS 5 - -#define LCD_CLEAR_DISPLAY_MS 2 -#define LCD_CURSOR_HOME_MS 2 - -//////////////////////////////////////////////////////////////////////////////// -// Zeilendefinitionen des verwendeten LCD -// Die Einträge hier sollten für ein LCD mit einer Zeilenlänge von 16 Zeichen passen -// Bei anderen Zeilenlängen müssen diese Einträge angepasst werden - -#define LCD_DDADR_LINE1 0x00 -#define LCD_DDADR_LINE2 0x40 -#define LCD_DDADR_LINE3 0x10 -#define LCD_DDADR_LINE4 0x50 - -//////////////////////////////////////////////////////////////////////////////// -// Initialisierung: muss ganz am Anfang des Programms aufgerufen werden. -void lcd_init( void ); - -//////////////////////////////////////////////////////////////////////////////// -// LCD löschen -void lcd_clear( void ); - -//////////////////////////////////////////////////////////////////////////////// -// Cursor in die 1. Zeile, 0-te Spalte -void lcd_home( void ); - -//////////////////////////////////////////////////////////////////////////////// -// Cursor an eine beliebige Position -void lcd_setcursor( uint8_t spalte, uint8_t zeile ); - -//////////////////////////////////////////////////////////////////////////////// -// Ausgabe eines einzelnen Zeichens an der aktuellen Cursorposition -void lcd_data( uint8_t data ); - -//////////////////////////////////////////////////////////////////////////////// -// Ausgabe eines Strings an der aktuellen Cursorposition -void lcd_string( const char *data ); - -void lcd_string_p(const char *data ); -#define lcd_string_P(__s) lcd_string_p(PSTR(__s)) - -//////////////////////////////////////////////////////////////////////////////// -// Definition eines benutzerdefinierten Sonderzeichens. -// data muss auf ein Array[5] mit den Spaltencodes des zu definierenden Zeichens -// zeigen -void lcd_generatechar( uint8_t code, const uint8_t *data ); - -//////////////////////////////////////////////////////////////////////////////// -// Ausgabe eines Kommandos an das LCD. -void lcd_command( uint8_t data ); - - -//////////////////////////////////////////////////////////////////////////////// -// LCD Befehle und Argumente. -// Zur Verwendung in lcd_command - -// Clear Display -------------- 0b00000001 -#define LCD_CLEAR_DISPLAY 0x01 - -// Cursor Home ---------------- 0b0000001x -#define LCD_CURSOR_HOME 0x02 - -// Set Entry Mode ------------- 0b000001xx -#define LCD_SET_ENTRY 0x04 - -#define LCD_ENTRY_DECREASE 0x00 -#define LCD_ENTRY_INCREASE 0x02 -#define LCD_ENTRY_NOSHIFT 0x00 -#define LCD_ENTRY_SHIFT 0x01 - -// Set Display ---------------- 0b00001xxx -#define LCD_SET_DISPLAY 0x08 - -#define LCD_DISPLAY_OFF 0x00 -#define LCD_DISPLAY_ON 0x04 -#define LCD_CURSOR_OFF 0x00 -#define LCD_CURSOR_ON 0x02 -#define LCD_BLINKING_OFF 0x00 -#define LCD_BLINKING_ON 0x01 - -// Set Shift ------------------ 0b0001xxxx -#define LCD_SET_SHIFT 0x10 - -#define LCD_CURSOR_MOVE 0x00 -#define LCD_DISPLAY_SHIFT 0x08 -#define LCD_SHIFT_LEFT 0x00 -#define LCD_SHIFT_RIGHT 0x04 - -// Set Function --------------- 0b001xxxxx -#define LCD_SET_FUNCTION 0x20 - -#define LCD_FUNCTION_4BIT 0x00 -#define LCD_FUNCTION_8BIT 0x10 -#define LCD_FUNCTION_1LINE 0x00 -#define LCD_FUNCTION_2LINE 0x08 -#define LCD_FUNCTION_5X7 0x00 -#define LCD_FUNCTION_5X10 0x04 - -#define LCD_SOFT_RESET 0x30 - -// Set CG RAM Address --------- 0b01xxxxxx (Character Generator RAM) -#define LCD_SET_CGADR 0x40 - -#define LCD_GC_CHAR0 0 -#define LCD_GC_CHAR1 1 -#define LCD_GC_CHAR2 2 -#define LCD_GC_CHAR3 3 -#define LCD_GC_CHAR4 4 -#define LCD_GC_CHAR5 5 -#define LCD_GC_CHAR6 6 -#define LCD_GC_CHAR7 7 - -// Set DD RAM Address --------- 0b1xxxxxxx (Display Data RAM) -#define LCD_SET_DDADR 0x80 - -#endif \ No newline at end of file diff --git a/main.c b/main.c deleted file mode 100644 index 7897c21..0000000 --- a/main.c +++ /dev/null @@ -1,140 +0,0 @@ -#include -#include -#include -#include - -#include "lcd_routines.h" -#include "uart.h" - -#define SAVE PD2 -#define SIGNAL PD3 -#define FREQ_DOWN PD4 -#define FREQ_UP PD5 -#define AMP_DOWN PD6 -#define AMP_UP PD7 -#define KEY_DDR DDRD -#define KEY_PORT PORTD -#define KEY_PIN PIND -#define KEY_ON_DDR DDRB -#define KEY_ON_PORT PORTB -#define KEY_ON_PIN PINB -#define KEY_ON PB0 - -#define LED_PIN PA7 -#define LED_PORT PORTA -#define LED_DDR DDRA - -#define led_on() LED_PORT |= _BV(LED_PIN); -#define led_off() LED_PORT &= ~_BV(LED_PIN); -#define led_toggle() LED_PORT ^= _BV(LED_PIN) - -#define UART_BAUD_RATE 9600 - -#define ALL_KEYS (_BV(SAVE) | _BV(SIGNAL) | _BV(FREQ_DOWN) | _BV(FREQ_UP) | _BV(AMP_DOWN) | _BV(AMP_UP) ) - -#define REPEAT_MASK ALL_KEYS -#define REPEAT_START 50 -#define REPEAT_NEXT 20 - -volatile uint16_t key_state; -volatile uint16_t key_press; - -/* prototypes */ -void init_io(); -uint16_t get_key_press(uint16_t key_mask); - -int main(void) { - init_io(); - lcd_init(); - uart_init(UART_BAUD_SELECT(UART_BAUD_RATE,F_CPU)); - - lcd_setcursor(0, 0); - - unsigned int c; - - sei(); - - for (;;) { - if (uart_available() > 0) { - c = uart_getc(); - - if (c == '}') { - lcd_clear(); - } else if (c == '*') { - lcd_setcursor(0, 2); - } else if (c == '+') { - lcd_setcursor(0, 1); - } else if (c == '\'') { - led_off(); - } else if (c == '#') { - led_on(); - } else { - lcd_data(c); - } - } - - if (get_key_press(_BV(FREQ_DOWN))) { - uart_putc('f'); - } - if (get_key_press(_BV(FREQ_UP))) { - uart_putc('F'); - } - if (get_key_press(_BV(SIGNAL))) { - uart_putc('s'); - } - if (get_key_press(_BV(AMP_UP))) { - uart_putc('A'); - } - if (get_key_press(_BV(AMP_DOWN))) { - uart_putc('a'); - } - if (get_key_press(_BV(KEY_ON) << 8)) { - uart_putc('o'); - } - if (get_key_press(_BV(SAVE))) { - uart_putc('v'); - } - - } - -} - -void init_io() { - KEY_DDR &= ~ALL_KEYS; // configure key port for input - KEY_PORT |= ALL_KEYS; - - KEY_ON_DDR &= ~_BV(KEY_ON); - KEY_ON_PORT |= _BV(KEY_ON); - - LED_DDR |= _BV(LED_PIN); - LED_PORT &= ~_BV(LED_PIN); - - TCCR0 = (1 << CS02) | (1 << CS00); // divide by 1024 - TCNT0 = (uint8_t) (int16_t) -(F_CPU / 1024 * 10e-3 + 0.5); // preload for 10ms - TIMSK |= 1 << TOIE0; // enable timer interrupt -} - -ISR( TIMER0_OVF_vect ) { - static uint16_t ct0, ct1; - uint16_t i; - - TCNT0 = (uint8_t) (int16_t) -(F_CPU / 1024 * 10e-3 + 0.5); // preload for 10ms - - i = key_state ^ ~(KEY_PIN | (KEY_ON_PIN << 8)); // key changed ? - ct0 = ~(ct0 & i); // reset or count ct0 - ct1 = ct0 ^ (ct1 & i); // reset or count ct1 - i &= ct0 & ct1; // count until roll over ? - key_state ^= i; // then toggle debounced state - key_press |= key_state & i; // 0->1: key press detect - -} - -uint16_t get_key_press(uint16_t key_mask) { - cli(); - // read and clear atomic ! - key_mask &= key_press; // read key(s) - key_press ^= key_mask; // clear key(s) - sei(); - return key_mask; -} - diff --git a/main.hex b/main.hex deleted file mode 100644 index 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-:10056000DF93EC0102C00E948A02FE012196849171 -:100570008823C9F7DF91CF9108958091650020917C -:10058000640090E04F96821B91096FE170E00E9439 -:10059000CF0208958091640080936500089597FBD1 -:1005A000092E07260AD077FD04D00CD006D00020F3 -:1005B0001AF4709561957F4F0895F6F7909581959F -:1005C0009F4F0895AA1BBB1B51E107C0AA1FBB1F69 -:1005D000A617B70710F0A61BB70B881F991F5A95CF -:1005E000A9F780959095BC01CD010895F894FFCFAF -:00000001FF diff --git a/uart.c b/uart.c deleted file mode 100644 index c249f00..0000000 --- a/uart.c +++ /dev/null @@ -1,776 +0,0 @@ -/************************************************************************* -Title: Interrupt UART library with receive/transmit circular buffers -Author: Peter Fleury http://jump.to/fleury -File: $Id: uart.c,v 1.6.2.1 2007/07/01 11:14:38 peter Exp $ -Software: AVR-GCC 4.1, AVR Libc 1.4.6 or higher -Hardware: any AVR with built-in UART, -License: GNU General Public License - -DESCRIPTION: - An interrupt is generated when the UART has finished transmitting or - receiving a byte. The interrupt handling routines use circular buffers - for buffering received and transmitted data. - - The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE variables define - the buffer size in bytes. Note that these variables must be a - power of 2. - -USAGE: - Refere to the header file uart.h for a description of the routines. - See also example test_uart.c. - -NOTES: - Based on Atmel Application Note AVR306 - -LICENSE: - Copyright (C) 2006 Peter Fleury - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - any later version. - - This program 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 General Public License for more details. - -*************************************************************************/ - -/************************************************************************ -uart_available, uart_flush, uart1_available, and uart1_flush functions -were adapted from the Arduino HardwareSerial.h library by Tim Sharpe on -11 Jan 2009. The license info for HardwareSerial.h is as follows: - - 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 -************************************************************************/ - -/************************************************************************ -Changelog for modifications made by Tim Sharpe, starting with the current - library version on his Web site as of 05/01/2009. - -Date Description -========================================================================= -05/11/2009 Changed all existing UARTx_RECEIVE_INTERRUPT and UARTx_TRANSMIT_INTERRUPT - macros to use the "_vect" format introduced in AVR-Libc - v1.4.0. Had to split the 3290 and 6490 out of their existing - macro due to an inconsistency in the UART0_RECEIVE_INTERRUPT - vector name (seems like a typo: USART_RX_vect for the 3290/6490 - vice USART0_RX_vect for the others in the macro). - Verified all existing macro register names against the device - header files in AVR-Libc v1.6.6 to catch any inconsistencies. -05/12/2009 Added support for 48P, 88P, 168P, and 328P by adding them to the - existing 48/88/168 macro. - Added Arduino-style available() and flush() functions for both - supported UARTs. Really wanted to keep them out of the library, so - that it would be as close as possible to Peter Fleury's original - library, but has scoping issues accessing internal variables from - another program. Go C! -05/13/2009 Changed Interrupt Service Routine label from the old "SIGNAL" to - the "ISR" format introduced in AVR-Libc v1.4.0. - -************************************************************************/ - -#include -#include -#include -#include "uart.h" - - -/* - * constants and macros - */ - -/* size of RX/TX buffers */ -#define UART_RX_BUFFER_MASK ( UART_RX_BUFFER_SIZE - 1) -#define UART_TX_BUFFER_MASK ( UART_TX_BUFFER_SIZE - 1) - -#if ( UART_RX_BUFFER_SIZE & UART_RX_BUFFER_MASK ) -#error RX buffer size is not a power of 2 -#endif -#if ( UART_TX_BUFFER_SIZE & UART_TX_BUFFER_MASK ) -#error TX buffer size is not a power of 2 -#endif - -#if defined(__AVR_AT90S2313__) \ - || defined(__AVR_AT90S4414__) || defined(__AVR_AT90S4434__) \ - || defined(__AVR_AT90S8515__) || defined(__AVR_AT90S8535__) \ - || defined(__AVR_ATmega103__) - /* old AVR classic or ATmega103 with one UART */ - #define AT90_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS USR - #define UART0_CONTROL UCR - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__) - /* old AVR classic with one UART */ - #define AT90_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \ - || defined(__AVR_ATmega323__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RXC_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega8515__) || defined(__AVR_ATmega8535__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega163__) - /* ATmega163 with one UART */ - #define ATMEGA_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega162__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RXC_vect - #define UART1_RECEIVE_INTERRUPT USART1_RXC_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART1_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega161__) - /* ATmega with UART */ - #error "AVR ATmega161 currently not supported by this libaray !" -#elif defined(__AVR_ATmega169__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega48__) ||defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) || \ - defined(__AVR_ATmega48P__) ||defined(__AVR_ATmega88P__) || defined(__AVR_ATmega168P__) || \ - defined(__AVR_ATmega328P__) - /* TLS-Added 48P/88P/168P/328P */ - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATtiny2313__) - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega329__) ||\ - defined(__AVR_ATmega649__) ||\ - defined(__AVR_ATmega325__) ||defined(__AVR_ATmega3250__) ||\ - defined(__AVR_ATmega645__) ||defined(__AVR_ATmega6450__) - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega3290__) ||\ - defined(__AVR_ATmega6490__) - /* TLS-Separated these two from the previous group because of inconsistency in the USART_RX */ - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega640__) -/* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART0_UDRE_vect - #define UART0_TRANSMIT_INTERRUPT USART1_RX_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega644__) - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART0_UDRE_vect - #define UART0_TRANSMIT_INTERRUPT USART1_RX_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#else - #error "no UART definition for MCU available" -#endif - - -/* - * module global variables - */ -static volatile unsigned char UART_TxBuf[UART_TX_BUFFER_SIZE]; -static volatile unsigned char UART_RxBuf[UART_RX_BUFFER_SIZE]; -static volatile unsigned char UART_TxHead; -static volatile unsigned char UART_TxTail; -static volatile unsigned char UART_RxHead; -static volatile unsigned char UART_RxTail; -static volatile unsigned char UART_LastRxError; - -#if defined( ATMEGA_USART1 ) -static volatile unsigned char UART1_TxBuf[UART_TX_BUFFER_SIZE]; -static volatile unsigned char UART1_RxBuf[UART_RX_BUFFER_SIZE]; -static volatile unsigned char UART1_TxHead; -static volatile unsigned char UART1_TxTail; -static volatile unsigned char UART1_RxHead; -static volatile unsigned char UART1_RxTail; -static volatile unsigned char UART1_LastRxError; -#endif - - - -ISR(UART0_RECEIVE_INTERRUPT) -/************************************************************************* -Function: UART Receive Complete interrupt -Purpose: called when the UART has received a character -**************************************************************************/ -{ - unsigned char tmphead; - unsigned char data; - unsigned char usr; - unsigned char lastRxError; - - - /* read UART status register and UART data register */ - usr = UART0_STATUS; - data = UART0_DATA; - - /* */ -#if defined( AT90_UART ) - lastRxError = (usr & (_BV(FE)|_BV(DOR)) ); -#elif defined( ATMEGA_USART ) - lastRxError = (usr & (_BV(FE)|_BV(DOR)) ); -#elif defined( ATMEGA_USART0 ) - lastRxError = (usr & (_BV(FE0)|_BV(DOR0)) ); -#elif defined ( ATMEGA_UART ) - lastRxError = (usr & (_BV(FE)|_BV(DOR)) ); -#endif - - /* calculate buffer index */ - tmphead = ( UART_RxHead + 1) & UART_RX_BUFFER_MASK; - - if ( tmphead == UART_RxTail ) { - /* error: receive buffer overflow */ - lastRxError = UART_BUFFER_OVERFLOW >> 8; - }else{ - /* store new index */ - UART_RxHead = tmphead; - /* store received data in buffer */ - UART_RxBuf[tmphead] = data; - } - UART_LastRxError = lastRxError; -} - - -ISR(UART0_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART Data Register Empty interrupt -Purpose: called when the UART is ready to transmit the next byte -**************************************************************************/ -{ - unsigned char tmptail; - - - if ( UART_TxHead != UART_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART_TxTail + 1) & UART_TX_BUFFER_MASK; - UART_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART0_DATA = UART_TxBuf[tmptail]; /* start transmission */ - }else{ - /* tx buffer empty, disable UDRE interrupt */ - UART0_CONTROL &= ~_BV(UART0_UDRIE); - } -} - - -/************************************************************************* -Function: uart_init() -Purpose: initialize UART and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart_init(unsigned int baudrate) -{ - UART_TxHead = 0; - UART_TxTail = 0; - UART_RxHead = 0; - UART_RxTail = 0; - -#if defined( AT90_UART ) - /* set baud rate */ - UBRR = (unsigned char)baudrate; - - /* enable UART receiver and transmmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|_BV(RXEN)|_BV(TXEN); - -#elif defined (ATMEGA_USART) - /* Set baud rate */ - if ( baudrate & 0x8000 ) - { - UART0_STATUS = (1<>8); - UBRRL = (unsigned char) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|(1<>8); - UBRR0L = (unsigned char) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE0)|(1<>8); - UBRR = (unsigned char) baudrate; - - /* Enable UART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|(1<> 8; - }else{ - /* store new index */ - UART1_RxHead = tmphead; - /* store received data in buffer */ - UART1_RxBuf[tmphead] = data; - } - UART1_LastRxError = lastRxError; -} - - -SIGNAL(UART1_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART1 Data Register Empty interrupt -Purpose: called when the UART1 is ready to transmit the next byte -**************************************************************************/ -{ - unsigned char tmptail; - - - if ( UART1_TxHead != UART1_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART1_TxTail + 1) & UART_TX_BUFFER_MASK; - UART1_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART1_DATA = UART1_TxBuf[tmptail]; /* start transmission */ - }else{ - /* tx buffer empty, disable UDRE interrupt */ - UART1_CONTROL &= ~_BV(UART1_UDRIE); - } -} - - -/************************************************************************* -Function: uart1_init() -Purpose: initialize UART1 and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart1_init(unsigned int baudrate) -{ - UART1_TxHead = 0; - UART1_TxTail = 0; - UART1_RxHead = 0; - UART1_RxTail = 0; - - - /* Set baud rate */ - if ( baudrate & 0x8000 ) - { - UART1_STATUS = (1<>8); - UBRR1L = (unsigned char) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART1_CONTROL = _BV(RXCIE1)|(1< http://jump.to/fleury -File: $Id: uart.h,v 1.8.2.1 2007/07/01 11:14:38 peter Exp $ -Software: AVR-GCC 4.1, AVR Libc 1.4 -Hardware: any AVR with built-in UART, tested on AT90S8515 & ATmega8 at 4 Mhz -License: GNU General Public License -Usage: see Doxygen manual - -LICENSE: - Copyright (C) 2006 Peter Fleury - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - any later version. - - This program 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 General Public License for more details. - -************************************************************************/ - -/************************************************************************ -uart_available, uart_flush, uart1_available, and uart1_flush functions -were adapted from the Arduino HardwareSerial.h library by Tim Sharpe on -11 Jan 2009. The license info for HardwareSerial.h is as follows: - - 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 -************************************************************************/ - -/************************************************************************ -Changelog for modifications made by Tim Sharpe, starting with the current - library version on his Web site as of 05/01/2009. - -Date Description -========================================================================= -05/12/2009 Added Arduino-style available() and flush() functions for both - supported UARTs. Really wanted to keep them out of the library, so - that it would be as close as possible to Peter Fleury's original - library, but has scoping issues accessing internal variables from - another program. Go C! - -************************************************************************/ - -/** - * @defgroup pfleury_uart UART Library - * @code #include @endcode - * - * @brief Interrupt UART library using the built-in UART with transmit and receive circular buffers. - * - * This library can be used to transmit and receive data through the built in UART. - * - * An interrupt is generated when the UART has finished transmitting or - * receiving a byte. The interrupt handling routines use circular buffers - * for buffering received and transmitted data. - * - * The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE constants define - * the size of the circular buffers in bytes. Note that these constants must be a power of 2. - * You may need to adapt this constants to your target and your application by adding - * CDEFS += -DUART_RX_BUFFER_SIZE=nn -DUART_RX_BUFFER_SIZE=nn to your Makefile. - * - * @note Based on Atmel Application Note AVR306 - * @author Peter Fleury pfleury@gmx.ch http://jump.to/fleury - */ - -/**@{*/ - - -#if (__GNUC__ * 100 + __GNUC_MINOR__) < 304 -#error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !" -#endif - - -/* -** constants and macros -*/ - -/** @brief UART Baudrate Expression - * @param xtalcpu system clock in Mhz, e.g. 4000000L for 4Mhz - * @param baudrate baudrate in bps, e.g. 1200, 2400, 9600 - */ -#define UART_BAUD_SELECT(baudRate,xtalCpu) ((xtalCpu)/((baudRate)*16l)-1) - -/** @brief UART Baudrate Expression for ATmega double speed mode - * @param xtalcpu system clock in Mhz, e.g. 4000000L for 4Mhz - * @param baudrate baudrate in bps, e.g. 1200, 2400, 9600 - */ -#define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate,xtalCpu) (((xtalCpu)/((baudRate)*8l)-1)|0x8000) - - -/** Size of the circular receive buffer, must be power of 2 */ -#ifndef UART_RX_BUFFER_SIZE -#define UART_RX_BUFFER_SIZE 32 -#endif -/** Size of the circular transmit buffer, must be power of 2 */ -#ifndef UART_TX_BUFFER_SIZE -#define UART_TX_BUFFER_SIZE 32 -#endif - -/* test if the size of the circular buffers fits into SRAM */ -#if ( (UART_RX_BUFFER_SIZE+UART_TX_BUFFER_SIZE) >= (RAMEND-0x60 ) ) -#error "size of UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE larger than size of SRAM" -#endif - -/* -** high byte error return code of uart_getc() -*/ -#define UART_FRAME_ERROR 0x0800 /* Framing Error by UART */ -#define UART_OVERRUN_ERROR 0x0400 /* Overrun condition by UART */ -#define UART_BUFFER_OVERFLOW 0x0200 /* receive ringbuffer overflow */ -#define UART_NO_DATA 0x0100 /* no receive data available */ - - -/* -** function prototypes -*/ - -/** - @brief Initialize UART and set baudrate - @param baudrate Specify baudrate using macro UART_BAUD_SELECT() - @return none -*/ -extern void uart_init(unsigned int baudrate); - - -/** - * @brief Get received byte from ringbuffer - * - * Returns in the lower byte the received character and in the - * higher byte the last receive error. - * UART_NO_DATA is returned when no data is available. - * - * @param void - * @return lower byte: received byte from ringbuffer - * @return higher byte: last receive status - * - \b 0 successfully received data from UART - * - \b UART_NO_DATA - *
no receive data available - * - \b UART_BUFFER_OVERFLOW - *
Receive ringbuffer overflow. - * We are not reading the receive buffer fast enough, - * one or more received character have been dropped - * - \b UART_OVERRUN_ERROR - *
Overrun condition by UART. - * A character already present in the UART UDR register was - * not read by the interrupt handler before the next character arrived, - * one or more received characters have been dropped. - * - \b UART_FRAME_ERROR - *
Framing Error by UART - */ -extern unsigned int uart_getc(void); - - -/** - * @brief Put byte to ringbuffer for transmitting via UART - * @param data byte to be transmitted - * @return none - */ -extern void uart_putc(unsigned char data); - - -/** - * @brief Put string to ringbuffer for transmitting via UART - * - * The string is buffered by the uart library in a circular buffer - * and one character at a time is transmitted to the UART using interrupts. - * Blocks if it can not write the whole string into the circular buffer. - * - * @param s string to be transmitted - * @return none - */ -extern void uart_puts(const char *s ); - - -/** - * @brief Put string from program memory to ringbuffer for transmitting via UART. - * - * The string is buffered by the uart library in a circular buffer - * and one character at a time is transmitted to the UART using interrupts. - * Blocks if it can not write the whole string into the circular buffer. - * - * @param s program memory string to be transmitted - * @return none - * @see uart_puts_P - */ -extern void uart_puts_p(const char *s ); - -/** - * @brief Macro to automatically put a string constant into program memory - */ -#define uart_puts_P(__s) uart_puts_p(PSTR(__s)) - -/** - * @brief Return number of bytes waiting in the receive buffer - * @param none - * @return bytes waiting in the receive buffer - */ -extern int uart_available(void); - -/** - * @brief Flush bytes waiting in receive buffer - * @param none - * @return none - */ -extern void uart_flush(void); - - -/** @brief Initialize USART1 (only available on selected ATmegas) @see uart_init */ -extern void uart1_init(unsigned int baudrate); -/** @brief Get received byte of USART1 from ringbuffer. (only available on selected ATmega) @see uart_getc */ -extern unsigned int uart1_getc(void); -/** @brief Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_putc */ -extern void uart1_putc(unsigned char data); -/** @brief Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts */ -extern void uart1_puts(const char *s ); -/** @brief Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts_p */ -extern void uart1_puts_p(const char *s ); -/** @brief Macro to automatically put a string constant into program memory */ -#define uart1_puts_P(__s) uart1_puts_p(PSTR(__s)) -/** @brief Return number of bytes waiting in the receive buffer */ -extern int uart1_available(void); -/** @brief Flush bytes waiting in receive buffer */ -extern void uart1_flush(void); - -/**@}*/ - - -#endif // UART_H -