main.asm

STM8S实验 ASM源程序

stm8/
	#include "mapping.inc"
	#include "STM8S105C_S.inc"
  segment 'ram0'
receive_buffer ds.b	20	;接收数据大小
counter ds.b

  segment 'rom'
main.l
	; initialize SP
	ldw X,#stack_end
	ldw SP,X

	#ifdef RAM0	
	; clear RAM0
ram0_start.b EQU $ram0_segment_start
ram0_end.b EQU $ram0_segment_end
	ldw X,#ram0_start
clear_ram0.l
	clr (X)
	incw X
	cpw X,#ram0_end	
	jrule clear_ram0
	#endif

	#ifdef RAM1
	; clear RAM1
ram1_start.w EQU $ram1_segment_start
ram1_end.w EQU $ram1_segment_end	
	ldw X,#ram1_start
clear_ram1.l
	clr (X)
	incw X
	cpw X,#ram1_end	
	jrule clear_ram1
	#endif

	; clear stack
stack_start.w EQU $stack_segment_start
stack_end.w EQU $stack_segment_end
	ldw X,#stack_start
clear_stack.l
	clr (X)
	incw X
	cpw X,#stack_end	
	jrule clear_stack

  intel
  mov UART2_CR1,#0 
  mov UART2_CR2,#0 
	mov UART2_CR3,#0 
  mov UART2_BRR2,#0
	mov UART2_BRR1,#0dh
	mov UART2_CR2,#2ch 				
	rim 
	
  ldw x,receive_buffer
	mov  counter,#12
loop:
	jra loop
	

send_char:
 push cc
here
 btjf UART2_SR,#7,here
 ld UART2_DR,a
 pop cc
 ret

send_str:
  mov counter,#12
next2:
  dec counter
	incw x
	call send_char
	jrne next2
	mov counter,#12
	ret

UART2_Recv_ISR.l
  ld a,UART2_DR
	ld (x),a
	incw x
	dec counter
	jrne next 
  ldw x,receive_buffer
	call send_str
next:
  iret	


	interrupt NonHandledInterrupt
NonHandledInterrupt.l
	iret
  motorola
	segment 'vectit'
	dc.l {$82000000+main}									; reset
	dc.l {$82000000+NonHandledInterrupt}	; trap
	dc.l {$82000000+NonHandledInterrupt}	; irq0
	dc.l {$82000000+NonHandledInterrupt}	; irq1
	dc.l {$82000000+NonHandledInterrupt}	; irq2
	dc.l {$82000000+NonHandledInterrupt}	; irq3
	dc.l {$82000000+NonHandledInterrupt}	; irq4
	dc.l {$82000000+NonHandledInterrupt}	; irq5
	dc.l {$82000000+NonHandledInterrupt}	; irq6
	dc.l {$82000000+NonHandledInterrupt}	; irq7
	dc.l {$82000000+NonHandledInterrupt}	; irq8
	dc.l {$82000000+NonHandledInterrupt}	; irq9
	dc.l {$82000000+NonHandledInterrupt}	; irq10
	dc.l {$82000000+NonHandledInterrupt}	; irq11
	dc.l {$82000000+NonHandledInterrupt}	; irq12
	dc.l {$82000000+NonHandledInterrupt}	; irq13
	dc.l {$82000000+NonHandledInterrupt}	; irq14
	dc.l {$82000000+NonHandledInterrupt}	; irq15
	dc.l {$82000000+NonHandledInterrupt}	; irq16
	dc.l {$82000000+NonHandledInterrupt}	; irq17
	dc.l {$82000000+NonHandledInterrupt}	; irq18
	dc.l {$82000000+NonHandledInterrupt}	; irq19
	dc.l {$82000000+NonHandledInterrupt}	; irq20
	dc.l {$82000000+UART2_Recv_ISR}	; irq21
	dc.l {$82000000+NonHandledInterrupt}	; irq22
	dc.l {$82000000+NonHandledInterrupt}	; irq23
	dc.l {$82000000+NonHandledInterrupt}	; irq24
	dc.l {$82000000+NonHandledInterrupt}	; irq25
	dc.l {$82000000+NonHandledInterrupt}	; irq26
	dc.l {$82000000+NonHandledInterrupt}	; irq27
	dc.l {$82000000+NonHandledInterrupt}	; irq28
	dc.l {$82000000+NonHandledInterrupt}	; irq29

	end