fet440_lcd_01.s43

MSP430的汇编开发例子

;******************************************************************************
;   MSP-FET430P440 Demo - LCD, Display "6543210" on STK/EVK LCD
;
;   Description: Display "6543210" on MSP-EVK430S320 LCD.
;   ACLK = LFXT1 = 32768Hz, MCLK = SMCLK = default DCO = 32 x ACLK = 1048576Hz
;   //* An external watch crystal between XIN & XOUT is required for ACLK *//	
;
;                 MSP430F449
;              -----------------
;          /|\|              XIN|-
;           | |                 | 32kHz
;           --|RST          XOUT|-
;             |                 |
;           +-|R33          P5.1|     -----------------
;          1m |              -  |--> | + 7 6 5 4 3 2 1 |
;           +-|R23          P3.2|     -----------------
;          1m |             COM0|-----||||
;           +-|R13          COM1|------|||
;          1m |             COM2|-------||
;           +-|R03          COM3|--------|
;           | |                 |
;          Vss
;
;   M. Buccini
;   Texas Instruments Inc.
;   Feb 2005
;   Built with IAR Embedded Workbench Version: 3.21A
;******************************************************************************
#include  <msp430x44x.h>

;------------------------------------------------------------------------------
            ORG     01100h                  ; Program Start
;------------------------------------------------------------------------------
RESET       mov.w   #0A00h,SP               ; Initialize stack pointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupFLL    bis.b   #XCAP14PF,&FLL_CTL0     ; Configure load caps
            mov     #10000,R15              ;
Xtal_Wait   dec     R15                     ; Delay for 32 kHz crystal to
            jnz     Xtal_Wait		    ; stabilize
SetupLCD    mov.b   #LCDON+LCD4MUX+LCDSG0_4,&LCDCTL
                                            ; LCD on, 4-Mux, select pins S0-S27
SetupBT     mov.b   #BT_fLCD_DIV128,&BTCTL  ; freqLCD = ACLK/128
SetupIO     mov.b   #0FCh,&P5SEL            ; COMx and Rxx selected
                                            ;
Mainloop    clr.w   R5                      ; Clear index
Disp        mov.b   LCD_Tab(R5),LCDMEM(R5)  ; Copy LCD map value to LCD memory
            inc.w   R5                      ; Increment index
            cmp.w   #07,R5                  ; Is index = 7?
            jne     Disp                    ; No, jump to label
            jmp     Mainloop                ; Again
                                            ;
LCD_Tab     DB      0B7h                    ; Displays '0'
            DB      012h                    ; Displays '1'
            DB      08Fh                    ; Displays '2'
            DB      01Fh                    ; Displays '3'
            DB      03Ah                    ; Displays '4'
            DB      03Dh                    ; Displays '5'
            DB      0BDh                    ; Displays '6'
            DB      013h                    ; Displays '7'
            DB      0BFh                    ; Displays '8'
            DB      03Fh                    ; Displays '9'
                                            ;										
;-----------------------------------------------------------------------------
;           Interrupt Vectors
;-----------------------------------------------------------------------------
            ORG     0FFFEh                  ; RESET Vector
            DW      RESET                   ;
            END