roboforum.ru

SBI  IOR, bit
CBI  IOR, bit
SBIC IOR, bit
CBIC IOR, bit

.equ    TxD, PB3
        . . .
        SBI _SFR_IO_ADDR(PORTB),TxD    ;    send '1'
        . . .

sw_uart.s:56: Error: constant value required
sw_uart.s:56: Error: `,' required
sw_uart.s:56: Error: constant value required
sw_uart.s:56: Error: garbage at end of line

andrey@debian:~$ cat test.S
#include <avr/io.h>
.equ    TxD, PB3

SBI _SFR_IO_ADDR(PORTB),TxD    ;    send '1'


andrey@debian:~$ avr-gcc -c -mmcu=atmega8 test.S
andrey@debian:~$ 

E:\>avr-gcc -c -mmcu=atmega8 test.s
test.s: Assembler messages:
test.s:4: Error: constant value required
test.s:4: Error: `,' required
test.s:4: Error: constant value required
test.s:4: Error: garbage at end of line

E:\>

Rxbyte   = 19         ;Received data
. . .
ror     Rxbyte
. . .
-------------------------------------------------------------
sw_uart.S:99: Error: register name or number from 0 to 31 required

andrey@debian:/tmp/LineTracer$ make

-------- begin --------
avr-gcc (GCC) 4.3.2
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


Compiling C: main.c
avr-gcc -c -mmcu=atmega8 -I. -gdwarf-2 -DF_CPU=2000000UL -O2 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=./main.lst  -std=gnu99 -MMD -MP -MF .dep/main.o.d main.c -o main.o 

Compiling C: stepper.c
avr-gcc -c -mmcu=atmega8 -I. -gdwarf-2 -DF_CPU=2000000UL -O2 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=./stepper.lst  -std=gnu99 -MMD -MP -MF .dep/stepper.o.d stepper.c -o stepper.o 

Assembling: sw_uart.S
avr-gcc -c -mmcu=atmega8 -I. -x assembler-with-cpp -DF_CPU=2000000 -Wa,-adhlns=./sw_uart.lst,-gstabs,--listing-cont-lines=100 sw_uart.S -o sw_uart.o

Linking: linetracer.elf
avr-gcc -mmcu=atmega8 -I. -gdwarf-2 -DF_CPU=2000000UL -O2 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=main.o  -std=gnu99 -MMD -MP -MF .dep/linetracer.elf.d main.o stepper.o sw_uart.o --output linetracer.elf -Wl,-Map=linetracer.map,--cref     -lm

Creating load file for Flash: linetracer.hex
avr-objcopy -O ihex -R .eeprom -R .fuse -R .lock linetracer.elf linetracer.hex

Creating load file for EEPROM: linetracer.eep
avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" \
   --change-section-lma .eeprom=0 --no-change-warnings -O ihex linetracer.elf linetracer.eep || exit 0

Creating Extended Listing: linetracer.lss
avr-objdump -h -S -z linetracer.elf > linetracer.lss

Creating Symbol Table: linetracer.sym
avr-nm -n linetracer.elf > linetracer.sym

Size after:
AVR Memory Usage
----------------
Device: atmega8

Program:     470 bytes (5.7% Full)
(.text + .data + .bootloader)

Data:         18 bytes (1.8% Full)
(.data + .bss + .noinit)



-------- end --------

andrey@debian:/tmp/LineTracer$

; SP - это указатель стэка
SP:
SP+1: ret0 ; адрес возврата - младший байт
SP+2: ret1 ; адрес возврата - старший байт
SP+3: j0  ; j - младшие 8 бит
SP+4: j1
SP+5: j2
SP+6: j3 ; j - старшие 8 бит