Adding from softuart_gittins_avr_20101010.zip

http://www.siwawi.arubi.uni-kl.de/avr_projects/softuart_gittins_avr_20101010.zip

Makefile

@@ -41,8 +41,8 @@
 
 
 # MCU name
-#MCU = atmega644
-MCU = attiny85
+MCU = atmega324p
+
 
 # Processor frequency.
 #     This will define a symbol, F_CPU, in all source code files equal to the 
@@ -62,8 +62,8 @@ MCU = attiny85
 #         F_CPU = 16000000
 #         F_CPU = 18432000
 #         F_CPU = 20000000
-#F_CPU =  3686400
-F_CPU =  1000000
+F_CPU = 8000000
+
 
 # Output format. (can be srec, ihex, binary)
 FORMAT = ihex
@@ -101,7 +101,7 @@ ASRC =
 #     0 = turn off optimization. s = optimize for size.
 #     (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
 OPT = s
-#OPT = 0
+
 
 # Debugging format.
 #     Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
@@ -129,6 +129,10 @@ CSTANDARD = -std=gnu99
 CDEFS = -DF_CPU=$(F_CPU)UL
 
 
+# Place -D or -U options here for ASM sources
+ADEFS = -DF_CPU=$(F_CPU)
+
+
 # Place -D or -U options here for C++ sources
 CPPDEFS = -DF_CPU=$(F_CPU)UL
 #CPPDEFS += -D__STDC_LIMIT_MACROS
@@ -160,6 +164,8 @@ CFLAGS += -Wstrict-prototypes
 CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst)
 CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 CFLAGS += $(CSTANDARD)
+CFLAGS += -ffunction-sections -fdata-sections -fno-inline-small-functions
+
 
 
 #---------------- Compiler Options C++ ----------------
@@ -178,7 +184,7 @@ CPPFLAGS += -fpack-struct
 CPPFLAGS += -fshort-enums
 CPPFLAGS += -fno-exceptions
 CPPFLAGS += -Wall
-CFLAGS += -Wundef
+CPPFLAGS += -Wundef
 #CPPFLAGS += -mshort-calls
 #CPPFLAGS += -fno-unit-at-a-time
 #CPPFLAGS += -Wstrict-prototypes
@@ -191,14 +197,14 @@ CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
 
 #---------------- Assembler Options ----------------
 #  -Wa,...:   tell GCC to pass this to the assembler.
-#  -ahlms:    create listing
+#  -adhlns:   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]
 #  -listing-cont-lines: Sets the maximum number of continuation lines of hex 
 #       dump that will be displayed for a given single line of source input.
-ASFLAGS = -Wa,-adhlns=$(<:.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
+ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-lines=100
 
 
 #---------------- Library Options ----------------
@@ -260,14 +266,13 @@ LDFLAGS += $(EXTMEMOPTS)
 LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
 LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
 #LDFLAGS += -T linker_script.x
+LDFLAGS += -Wl,--gc-sections -Wl,--relax
 
 
 
 #---------------- Programming Options (avrdude) ----------------
 
-# Programming hardware: alf avr910 avrisp bascom bsd 
-# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
-#
+# Programming hardware
 # Type: avrdude -c ?
 # to get a full listing.
 #
@@ -424,7 +429,7 @@ end:
 
 # Display size of file.
 HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
-ELFSIZE = $(SIZE) --format=avr $(TARGET).elf
+ELFSIZE = $(SIZE) --mcu=$(MCU) --format=avr $(TARGET).elf
 
 sizebefore:
 	@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
@@ -504,7 +509,7 @@ extcoff: $(TARGET).elf
 %.hex: %.elf
 	@echo
 	@echo $(MSG_FLASH) $@
-	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+	$(OBJCOPY) -O $(FORMAT) -R .eeprom -R .fuse -R .lock -R .signature $< $@
 
 %.eep: %.elf
 	@echo
@@ -516,7 +521,7 @@ extcoff: $(TARGET).elf
 %.lss: %.elf
 	@echo
 	@echo $(MSG_EXTENDED_LISTING) $@
-	$(OBJDUMP) -h -S $< > $@
+	$(OBJDUMP) -h -S -z $< > $@
 
 # Create a symbol table from ELF output file.
 %.sym: %.elf

default/softuart_megaxx4.hex

@@ -0,0 +1,60 @@
+:1000000084C000009DC000009BC0000099C000009B
+:1000100097C0000095C0000093C0000091C0000090
+:100020008FC000008DC000008BC0000089C00000A0
+:1000300087C0000085C0000083C0000081C00000B0
+:10004000A8C000007DC000007BC0000079C0000097
+:1000500077C0000075C0000073C0000071C00000D0
+:100060006FC000006DC000006BC0000069C00000E0
+:1000700067C0000065C0000063C000002048656CD8
+:100080006C6F200067656E6572696320736F6674BC
+:10009000756172742064726976657220636F64653D
+:1000A00020627920436F6C696E2047697474696EB1
+:1000B000730D0A000D0A536F6674756172742044E3
+:1000C000656D6F2D4170706C69636174696F6E0D41
+:1000D0000A006164617074656420666F7220417407
+:1000E0006D656C2041565220616E6420746869739E
+:1000F0002064656D6F206279204D617274696E2095
+:1001000054686F6D61730D0A000011241FBECFEF9C
+:10011000D8E0DEBFCDBF11E0A0E0B1E0E8E9F3E058
+:1001200002C005900D92A630B107D9F711E0A6E004
+:10013000B1E001C01D92A433B107E1F702D02AC19A
+:100140005FCF1F93CF93DF93BBD0D2D0789484EB53
+:1001500090E013D184E890E010D182ED90E00DD1D1
+:1001600080E091E0FED0C0E0D0E0DAD0882341F01A
+:10017000C2D0182F8BE5DDD0812FDBD08DE5D9D013
+:1001800021968FEFCF3FD80781F78CE790E0F5D02D
+:10019000EACF1F920F920FB60F9211248F939F9365
+:1001A000EF93FF9380912F01813029F580913001E9
+:1001B0008150F9F4809132019091330180FF02C0A7
+:1001C000599A01C0599880913201909133019695C6
+:1001D0008795909333018093320180913101815052
+:1001E0008093310180913101882311F410922F0105
+:1001F00083E08093300180912D01882309F057C05E
+:1002000080910A01882301F1809108018150809337
+:100210000801882309F04BC010920A0110922E01A8
+:10022000E0912B01F0E080910601E55FFE4F8083B5
+:1002300080912B018F5F80932B0180912B01803265
+:10024000B0F110922B0133C080912E01882381F4EC
+:1002500048992DC081E080932E011092060194E010
+:100260009093080198E090930701809309011FC0C3
+:10027000809108018150C9F4489B07C08091060114
+:1002800090910901892B8093060180910901880FC3
+:100290008093090180910701815080930701882391
+:1002A00019F481E080930A0183E080930801FF91B3
+:1002B000EF919F918F910F900FBE0F901F90189507
+:1002C00010922F0110922E0110922D01599A519ADD
+:1002D00050989FB7F89489E887BD82E084BD85BDBA
+:1002E000EEE6F0E080818260808316BC9FBF0895B7
+:1002F00010922D01089590912C0180912B01981757
+:10030000E1F3E92FF0E0E55FFE4FE081892F8F5F99
+:1003100080932C01803210F010922C018E2F0895C2
+:1003200090912B0120E080912C01981321E0822FE5
+:100330000895982F80912F018130E1F383E080931D
+:1003400030018AE080933101892F90E0880F991F56
+:100350009260909333018093320181E080932F016A
+:100360000895CF93DF93EC0102C02196E2DF8881EC
+:100370008823D9F7DF91CF910895CF93DF93EC01D4
+:1003800001C0D7DFFE01219684918823D1F7DF9148
+:08039000CF910895F894FFCF0E
+:060398002D2D0D0A0000EE
+:00000001FF

main.c

@@ -1,6 +1,6 @@
 /* 
 	AVR Software-Uart Demo-Application 
-	Version 0.3, 4/2007
+	Version 0.4, 10/2010
 	
 	by Martin Thomas, Kaiserslautern, Germany
 	<eversmith@heizung-thomas.de>
@@ -9,33 +9,46 @@
 
 /* 
 Test environment/settings: 
-- avr-gcc 4.1.1/avr-libc 1.4.5 (WinAVR 1/2007)
-- Atmel ATtiny85 @ 1MHz internal R/C
+- avr-gcc 4.3.3/avr-libc 1.6.7 (WinAVR 3/2010)
+- Atmel ATmega324P @ 8MHz internal RC, ATtiny85 @ 1MHz internal RC
 - 2400bps
+*/
+
+/*
+AVR Memory Usage (-Os, no-inline small-functions, relax)
+----------------
+Device: atmega324p
+
+Program:     926 bytes (2.8% Full)
+(.text + .data + .bootloader)
+
+Data:         52 bytes (2.5% Full)
+(.data + .bss + .noinit)
+
 
 AVR Memory Usage (-Os)
 ----------------
 Device: attiny85
 
-Program:     874 bytes (10.7% Full)
+Program:     828 bytes (10.1% Full)
 (.text + .data + .bootloader)
 
 Data:         52 bytes (10.2% Full)
 (.data + .bss + .noinit)
 
 */
 
-// #define WITH_STDIO_DEMO
+#define WITH_STDIO_DEMO   0 /* 1: enable, 0: disable */
 
 #include <avr/interrupt.h>
 #include <avr/pgmspace.h>
 #include "softuart.h"
 
 
-#ifdef WITH_STDIO_DEMO
+#if WITH_STDIO_DEMO
 #include <stdio.h>
 
-// interface between avr-libc stdio and the modified Fleury uart-lib:
+// interface between avr-libc stdio and software-UART
 static int my_stdio_putchar( char c, FILE *stream )
 {
 	if ( c == '\n' ) {
@@ -73,13 +86,13 @@ int main(void)
 	softuart_turn_rx_on(); /* redundant - on by default */
 
 	sei();
-	
+
 	softuart_puts_P( "\r\nSoftuart Demo-Application\r\n" );    // "implicit" PSTR
 	softuart_puts_p( PSTR("generic softuart driver code by Colin Gittins\r\n") ); // explicit PSTR
 	softuart_puts_p( pstring ); // pstring defined with PROGMEM
 	softuart_puts( "--\r\n" );  // string "from RAM"
 
-#ifdef WITH_STDIO_DEMO
+#if WITH_STDIO_DEMO
 	stdio_demo_func();
 #endif