bin2bcd32.s43

来自「430系列开发之MSP430FE42x开发代码实例」· S43 代码 · 共 55 行

;void bin2bcd32(register uint8_t bcd[5], register uint32_t bin)
        public bin2bcd32
        public _bin2bcd32

        RSEG CODE
bin2bcd32
_bin2bcd32
	#define i R8
	#define decimal_0 R9
	#define decimal_1 R10
	#define decimal_2 R11

                push    R8
                push    R9
                push    R10
                push    R11
                
                
                ;dint                                   ;;;;;
                clr     R9 ; decimal_0 =                ;;;;;debug clock stop problem
                clr     R10 ;decimal_1 =
                clr     R11 ;decimal_2 = 0;
        
                mov		#16,R8
bin2bcd32_1
		rla   	R15
   		dadd  	decimal_0,decimal_0
   		dadd  	decimal_1,decimal_1
   		dadd  	decimal_2,decimal_2
   		dec   	i
   		jnz   	bin2bcd32_1
   		mov	#16,i
bin2bcd32_2
		rla   	R14
   		dadd  	decimal_0,decimal_0
   		dadd  	decimal_1,decimal_1
   		dadd  	decimal_2,decimal_2
   		dec   	i
   		jnz   	bin2bcd32_2
   		mov.b	decimal_2,0(R12)
   		mov.b	decimal_1,2(R12)
   		swpb	decimal_1
   		mov.b	decimal_1,1(R12)
   		mov.b	decimal_0,4(R12)
   		swpb	decimal_0
   		mov.b	decimal_0,3(R12)

                pop     R11
                pop     R10
                pop     R9
                pop     R8
                ret
               
               end