AVR-GCC:错误:垃圾在行尾 [英] AVR-GCC: Error: garbage at end of line
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问题描述
我的堆栈init行有问题,因为avr-gcc返回
LED_Blink.asm:10:错误:行末垃圾
行:
ldi r17,低(RAMEND)
ldi r17,高(RAMEND)
我是困惑。我已经定义了RAMEND。我用这个命令使用了avr-gcc:
avr-gcc -x汇编器-mmcu = atmega328p LED_Blink.asm
我的汇编代码:
.equ SPL,0x3d
.equ SPH,0x3e
.equ RAMEND,0x8ff
$ b。b .equ PORTB,0x05
.equ DDRB,0x04
.org 0x000000
rjmp main
main:
ldi r17,低(RAMEND)
出SPL,r17
ldi r17,高(RAMEND)
出SPH,r17
ldi r16,0xff
出DDRB,r16
出PORTB,r16
循环:
ldi r16,32
rcall outer_loop
cbi PORTB,5
ldi r16,32
rcall outer_loop
sbi PORTB,5
rjmp loop
outer_loop:
clr r24
clr r25
delay_loop:
adiw r24,1
brne delay_loop
dec dec16
brne outer_loop
ret
解决方案
低
和高
对于AVR的GNU汇编器没有任何意义,我想你要使用 lo8
和 hi8
来分别取低位和高位字节。
I have problem with stack init lines because avr-gcc returns
LED_Blink.asm:10: Error: garbage at end of line
On lines:
ldi r17, low(RAMEND)
ldi r17, high(RAMEND)
And I am confused. I have already defined RAMEND. I used avr-gcc with this command:
avr-gcc -x assembler -mmcu=atmega328p LED_Blink.asm
My assembly code:
.equ SPL, 0x3d
.equ SPH, 0x3e
.equ RAMEND, 0x8ff
.equ PORTB, 0x05
.equ DDRB, 0x04
.org 0x000000
rjmp main
main:
ldi r17, low(RAMEND)
out SPL, r17
ldi r17, high(RAMEND)
out SPH, r17
ldi r16, 0xff
out DDRB, r16
out PORTB, r16
loop:
ldi r16, 32
rcall outer_loop
cbi PORTB, 5
ldi r16, 32
rcall outer_loop
sbi PORTB, 5
rjmp loop
outer_loop:
clr r24
clr r25
delay_loop:
adiw r24, 1
brne delay_loop
dec r16
brne outer_loop
ret
解决方案
low
and high
don't mean anything to the GNU assembler for AVR, I think you want to use lo8
and hi8
to take the low and high bytes, respectively.
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