From 4053424236542640b1cb23624877725d5ae8e50f Mon Sep 17 00:00:00 2001 From: Erik Andresen Date: Wed, 6 May 2015 12:10:35 +0200 Subject: [PATCH] added initial avr/nano program --- avr/.gitignore | 8 + avr/nano/Makefile | 438 ++++++++++++++++++++++++++++++++++++++++++ avr/nano/main.c | 167 ++++++++++++++++ avr/nano/main.hex | 204 ++++++++++++++++++++ avr/nano/ringbuffer.h | 34 ++++ avr/nano/uart.c | 97 ++++++++++ avr/nano/uart.h | 18 ++ 7 files changed, 966 insertions(+) create mode 100644 avr/.gitignore create mode 100644 avr/nano/Makefile create mode 100644 avr/nano/main.c create mode 100644 avr/nano/main.hex create mode 100644 avr/nano/ringbuffer.h create mode 100644 avr/nano/uart.c create mode 100644 avr/nano/uart.h diff --git a/avr/.gitignore b/avr/.gitignore new file mode 100644 index 0000000..9cb13a5 --- /dev/null +++ b/avr/.gitignore @@ -0,0 +1,8 @@ +.dep +*.eep +*.elf +*.lss +*.lst +*.map +*.o +*.sym diff --git a/avr/nano/Makefile b/avr/nano/Makefile new file mode 100644 index 0000000..f8864cc --- /dev/null +++ b/avr/nano/Makefile @@ -0,0 +1,438 @@ +# Hey Emacs, this is a -*- makefile -*- +# +# WinAVR 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". +# + +# mth 2004/09 +# Differences from WinAVR 20040720 sample: +# - DEPFLAGS according to Eric Weddingtion's fix (avrfreaks/gcc-forum) +# - F_OSC Define in CFLAGS and AFLAGS + + +# MCU name +MCU = atmega328p + +# Main Oscillator Frequency +# This is only used to define F_OSC in all assembler and c-sources. +#F_OSC = 3686400 + +# 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 = $(TARGET).c uart.c + + +# List Assembler source files here. +# Make them always end in a capital .S. Files ending in a lowercase .s +# will not be considered source files but generated files (assembler +# output from the compiler), and will be deleted upon "make clean"! +# Even though the DOS/Win* filesystem matches both .s and .S the same, +# it will preserve the spelling of the filenames, and gcc itself does +# care about how the name is spelled on its command-line. +ASRC = + + + +# Optimization level, can be [0, 1, 2, 3, s]. +# 0 = turn off optimization. s = optimize for size. +# (Note: 3 is not always the best optimization level. See avr-libc FAQ.) +OPT = s + +# Debugging format. +# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2. +# AVR (extended) COFF requires stabs, plus an avr-objcopy run. +DEBUG = stabs +#DEBUG = dwarf-2 + +# List any extra directories to look for include files here. +# Each directory must be seperated by a space. +EXTRAINCDIRS = + + +# Compiler flag to set the C Standard level. +# c89 - "ANSI" C +# gnu89 - c89 plus GCC extensions +# c99 - ISO C99 standard (not yet fully implemented) +# gnu99 - c99 plus GCC extensions +CSTANDARD = -std=gnu99 + +# Place -D or -U options here +CDEFS = -DF_CPU=16000000 + +# Place -I options here +CINCS = -Ii2c/ + + +# Compiler flags. +# -g*: generate debugging information +# -O*: optimization level +# -f...: tuning, see GCC manual and avr-libc documentation +# -Wall...: warning level +# -Wa,...: tell GCC to pass this to the assembler. +# -adhlns...: create assembler listing +CFLAGS = -g$(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 += $(CSTANDARD) +CFLAGS += -DF_OSC=$(F_OSC) + + + +# 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=$(<:.S=.lst),-gstabs +ASFLAGS += -DF_OSC=$(F_OSC) + + +#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 -lm + +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_MIN) $(SCANF_LIB) $(MATH_LIB) + + + + +# Programming support using avrdude. Settings and variables. + +# Programming hardware: alf avr910 avrisp bascom bsd +# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500 +# +# Type: avrdude -c ? +# to get a full listing. +# +#AVRDUDE_PROGRAMMER = avr911 +AVRDUDE_PROGRAMMER = avrisp2 + +# com1 = serial port. Use lpt1 to connect to parallel port. +#AVRDUDE_PORT = /dev/ttyUSB0 # programmer connected to serial device +AVRDUDE_PORT = usb # programmer connected to serial device + +AVRDUDE_WRITE_FLASH = -U flash:w:$(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) +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/$(@F).d +GENDEPFLAGS = -MD -MP -MF .dep/$(@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 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/avr/nano/main.c b/avr/nano/main.c new file mode 100644 index 0000000..0cb0acf --- /dev/null +++ b/avr/nano/main.c @@ -0,0 +1,167 @@ +#include +#include +#include +#include +#include +#include +#include "uart.h" + +/* + * I2C Register Map (8 Bit) + * 0x00 Register select + * 0x01 Distance left MSB + * 0x02 Distance left LSB + * 0x03 Distance right MSB + * 0x04 Distance right LSB + * + * 0xff Bootloader + */ + + +#define TWI_ACK TWCR = (1<>8; + TWI_ACK; + break; + case 0x02: // Distance right LSB + TWDR = tmp16; + TWI_ACK; + break; + case 0x03: // Distance right MSB + tmp16 = dist_right; + TWDR = tmp16>>8; + TWI_ACK; + break; + case 0x04: // Distance right LSB + TWDR = tmp16; + TWI_ACK; + break; + default: + TWDR = 0; + TWI_NAK; + } + ireg++; + break; + default: + TWI_RESET; + } +} + + +uint16_t ReadChannel(uint8_t mux) { + uint8_t i; + uint16_t result; + + ADCSRA = (1< +#include "uart.h" +#include + +#define UART_UBRR_CALC(BAUD_,FREQ_) ((FREQ_)/((BAUD_)*16L)-1) + +static volatile char read[RINGBUFFER_LEN]; +static volatile char *in_read_ptr; +static volatile char *out_read_ptr; + +ISR(USART_RX_vect) { + // update read from uart + if (UCSR0A & (1<> 8); + UBRR0L = (uint8_t)UART_UBRR_CALC(rate, F_CPU); + + in_read_ptr = out_read_ptr = read; +} + + +void uart_putc(char *c) { + while (!(UCSR0A & (1<out_write_ptr != buffer->in_write_ptr) { + if (UCSR0A & (1<out_write_ptr; + if (buffer->out_write_ptr < buffer->write + RINGBUFFER_LEN - 1) buffer->out_write_ptr++; + else buffer->out_write_ptr = buffer->write; + } + } + + // update read from uart + if (in_read_ptr != out_read_ptr) { + *buffer->in_read_ptr = *out_read_ptr; + + // update newline chars + if (buffer->block_read == *buffer->in_read_ptr) buffer->newlines++; + + if (buffer->in_read_ptr < buffer->read + RINGBUFFER_LEN - 1) buffer->in_read_ptr++; + else buffer->in_read_ptr = buffer->read; + + // move pointer + if (out_read_ptr < read + RINGBUFFER_LEN - 1) out_read_ptr++; + else out_read_ptr = read; + } +} + diff --git a/avr/nano/uart.h b/avr/nano/uart.h new file mode 100644 index 0000000..1225590 --- /dev/null +++ b/avr/nano/uart.h @@ -0,0 +1,18 @@ +#ifndef UART_H +#define UART_H + +#include +#include "ringbuffer.h" + +void setup_uart(unsigned int rate); +void uart_putc(char *c); +void uart_puts(char *s); +int uart_getc(void); +void uart_puti(int i); +int uart_putchar(char c, FILE *stream); +int uart_getchar(FILE *stream); +void uart_setup_stdout(void); +void uart_stream_update(ringbuffer_t *buffer); + +#endif + -- 2.39.2