;LCD部分用到的RAM0200H~~~~021FH用到的Rn有R15/R14

;LCD復(fù)位子程序（LCD_REST）不須要設(shè)事先置直接調(diào)用即可

;半屏顯示子程序（LCD）在調(diào)用前必須送入頁地址 例如：MOV.B #0B8H，LCD_PAGE_BRAM

;CALL#LCD顯示上屏

;：MOV.B #0BAH，LCD_PAGE_BRAM

;CALL#LCD顯示下屏

;LCDUP_WORD0_BRAM~~~LCDUP_WORD6_RAM是上屏顯示字的代碼寄存器一屏顯示7個字

;LCDDOWN_WORD0_BRAM~~~LCDDOWN_WORD6_RAM是下屏顯示字的代碼寄存器一屏顯示7個字

;每屏顯示是以中間為基準(zhǔn)向兩邊平均顯示在調(diào)用半屏顯示子程序時已經(jīng)自動計(jì)算LCD的列地址

;清屏指令可分全屏清除（LCD_CLEAR_ALL）和半屏清除（LCD_CLEAR）

;注 全屏清除子程序不需入口直接調(diào)用就行而半屏清除子程序在調(diào)用前入口與半屏顯示子程序相同

＃i nclude“MSP430x14x.h”

NAME LCD

MODULE LCD

PUBLICLCD

RSEG PROM

;=========LCD==================================

;A0=1為數(shù)據(jù)A0=0為命令

#defineA004H

#defineE102H

#defineE201H

#defineBIT_OUTP4OUT

#defineDATA_BUSP2OUT

;=============LCD____8RAM的位定義===============

#defineLCD_COM_BRAM0200H

#defineLCD_DATA_BRAM0201H

#defineLCD_LIE_BRAM0202H

#defineLCD_PAGE_BRAM0203H

;=============LCD_UP_RAM============================

#defineLCDUP_WORD0_BRAM 0204H

#defineLCDUP_WORD1_BRAM 0205H

#defineLCDUP_WORD2_BRAM 0206H

#defineLCDUP_WORD3_BRAM 0207H

#defineLCDUP_WORD4_BRAM 0208H

#defineLCDUP_WORD5_BRAM 0209H

#defineLCDUP_WORD6_BRAM 020AH

;==========下面的RAM只是在測試狀態(tài)下才會用到=====

#defineLCDUP_WORD7_BRAM 020BH

;=============LCD_DOWN_RAM=====================

#defineLCDDOWN_WORD0_BRAM 020CH

#defineLCDDOWN_WORD1_BRAM 020DH

#defineLCDDOWN_WORD2_BRAM 020EH

#defineLCDDOWN_WORD3_BRAM 020FH

#defineLCDDOWN_WORD4_BRAM 0210H

#defineLCDDOWN_WORD5_BRAM 0211H

#defineLCDDOWN_WORD6_BRAM 0212H

;==========下面的RAM只是在測試狀態(tài)下才會用到=====

#defineLCDDOWN_WORD7_BRAM 0213H

;=============LCD_數(shù)據(jù)寄存器_RAM=================

#defineLCD_R0_BRAM0214H

#defineLCD_R1_BRAM0215H

;=============LCD____16RAM的位定義===============

#defineLCD_COUNT_WRAM021CH

#defineLCD_WORD_WRAM021EH

;=============LCD____BIT的位定義===============

#defineLCD_BIT_RAM0220H

#defineLCD_E1_E20000H

;是LCD左右屏選擇為BIT=1選通左邊BIT=0選通右邊

#defineLCD_INV02H

;高電平時顯示反白

;---------------------------------------------------

;===========================================================

LCD_E1_COM

BIC.B#A0，&BIT_OUT;A0置低 設(shè)為命令通道

MOV.BLCD_COM_BRAM，&LCD_BUS ;輸出命令

BIS.B#E1，&BIT_OUT ;開E1

BIC.B#E1，&BIT_OUT ;關(guān)E1

RET;反回

LCD_E2_COM

BIC.B#A0，&BIT_OUT ;A0置低 設(shè)為命令通道

MOV.BLCD_COM_BRAM，&LCD_BUS ;輸出命令

BIS.B#E2，&BIT_OUT ;開E2

BIC.B#E2，&BIT_OUT ;關(guān)E2

RET;反回

LCD_E1_DATA

BIS.B#A0，&BIT_OUT ;A0置高 設(shè)為命令通道

MOV.BLCD_DATA_BRAM，&LCD_BUS ;輸出命令

BIS.B#E1，&BIT_OUT ;開E1

BIC.B#E1，&BIT_OUT ;關(guān)E1

RET;反回

LCD_E2_DATA

BIS.B#A0，&BIT_OUT ;A0置高 設(shè)為數(shù)據(jù)通道

MOV.BLCD_DATA_BRAM，&LCD_BUS ;輸出命令

BIS.B#E2，&BIT_OUT ;開E2

BIC.B#E2，&BIT_OUT ;關(guān)E2

RET;反回

;================CLEAR_LCD_DISPALY==============

;每次直接調(diào)用程序就可以清全屏顯示 不須入口

LCD_CLEAR_ALL

CLRR15

CLRR14

LCD_CLEAR_ALL_1

BIS.B#0B8H，R15

MOV.BR15，LCD_COM_BRAM

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#00H，LCD_COM_BRAM

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#61D，R14

LCD_CLEAR_ALL_2

MOV.B#000H，LCD_DATA_BRAM

CALL#LCD_E1_DATA

CALL#LCD_E2_DATA

CLRZ

DEC.BR14

JNZLCD_CLEAR_ALL_2

INC.BR15

CLRZ

CMP.B#0BCH，R15

JNELCD_CLEAR_ALL_1

RET

;================CLEAR_LCD_DISPALY=============

;每次直接調(diào)用程序就可以清半屏顯示

;調(diào)用前必須送入頁地址到LCD_PAGE_RAM（頁地址寄存器）

；例如：MOV.B #0B8H，LCD_PAGE_BRAM

;：CALL #LCD_CLEAR 就是清上半屏顯示

;：MOV.B #0BAH，LCD_PAGE_BRAM

;：CALL #LCD_CLEAR 就是清下半屏顯示

LCD_CLEAR

CLRR15

MOV.BLCD_PAGE_BRAM，LCD_LIE_BRAM

ADD.B#2D，LCD_LIE_BRAM

LCD_CLEAR_1

BIS.BLCD_PAGE_BRAM，R15

MOV.BR15，LCD_COM_BRAM

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#00H，LCD_COM_BRAM

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV#61D，R14

LCD_CLEAR_2

MOV.B#00H，LCD_DATA_BRAM

CALL#LCD_E1_DATA

CALL#LCD_E2_DATA

CLRZ

DEC.BR14

JNZLCD_CLEAR_2

INC.BR15

CLRZ

CMP.BLCD_LIE_BRAM，R15

JNZLCD_CLEAR_1

RET

;===============RESETTING_LCD_MODE=============

;調(diào)用此程序是使LCD復(fù)位并進(jìn)入工作狀態(tài)

LCD_REST

MOV.B#0E2H，LCD_COM_BRAM ;復(fù)位

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#0A4H，LCD_COM_BRAM ;關(guān)閉休閑狀態(tài)

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#0A9H，LCD_COM_BRAM ;設(shè)置1/32占空比

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#0A0H，LCD_COM_BRAM ;正向排序設(shè)置

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#0C0H，LCD_COM_BRAM ;設(shè)置顯示起始行為第一行

CALL#LCD_E1_COM

CALL#LCD_E2_COM

MOV.B#0AFH，LCD_COM_BRAM ;開顯示設(shè)置

CALL#LCD_E1_COM

CALL#LCD_E2_COM

RET

;查LCD PAGE #0B8H.#0B9H/#0BAH.#0BBH上屏須要顯示的個數(shù)

;這段程序已測試過03-3-12 9:55

;R15/R14/R13

LCD_CHK

CLRLCD_COUNT_RAM

MOV.B#8，LCD_R0_RAM;查殉上屏須要顯示的個數(shù)，一屏最多可以顯示7個16X16

CLR.BLCD_LIE_BRAM;清上屏查殉結(jié)果寄存器

MOVLCD_WORD_RAM，R14 ;把須要檢查字的首位16位地址放進(jìn)R14.LCD_WORD_RAM

;定義時必須是16位地址

LCD_CHK_0

DEC.BLCD_R0_RAM

JZLCD_CHK_1;測試完成退出

CLRZ

MOV.B@R14+，LCD_COUNT_RAM

TST.BLCD_COUNT_RAM;測試每個字寄存器是否為零

JZLCD_CHK_0;為零時轉(zhuǎn)

INC.BLCD_LIE_BRAM;大于零查殉結(jié)果寄存器加一

JMPLCD_CHK_0;反回測試

LCD_CHK_1

CLRLCD_COUNT_RAM

MOV.BLCD_LIE_BRAM，LCD_COUNT_RAM

MOVLCD_COUNT_RAM，&MPY ;把檢測的結(jié)果乘以16

MOV#16D，&OP2

MOV&RESLO，LCD_COUNT_RAM ;相乘的結(jié)果放回寄存器

MOV.BLCD_COUNT_RAM，LCD_LIE_BRAM

RRA.BLCD_LIE_BRAM;結(jié)果除2.放到上屏頁的寄存器

MOV.B#61D，LCD_COUNT_RAM

SUB.BLCD_LIE_BRAM，LCD_COUNT_RAM

MOV.BLCD_COUNT_RAM，LCD_LIE_BRAM

RET

;調(diào)用前必須把要顯示屏第一個字的地址放在R15內(nèi)

;列：MOV#LCDUP_WORD0_BRAM，LCD_WORD_RAM

;MOV#LCDDOWN_WORD0_BRAM，LCD_WORD_RAM

;用到的寄存器R15/R14

LCD

CLRZ

CMP.B#0B8H，LCD_PAGE_BRAM

JNELCD_1

MOV#LCDUP_WORD0_BRAM，LCD_WORD_RAM

JMPLCD_0

LCD_1 MOV#LCDDOWN_WORD0_BRAM，LCD_WORD_RAM

LCD_0 CALL#LCD_CHK

BIS.B#BIT0，LCD_BIT_RAM

MOV.B#7D，LCD_R1_RAM

;每次調(diào)用均連續(xù)顯示7個16X16的字而遇到字寄存器是

MOVLCD_WORD_RAM，R15 ;零就反回因?yàn)樽直砝锩媸菦]有零的

LCD_DISPALY

CLRR14

MOV.B@R15+，R14

TSTR14;R15是顯示字首位地址寄存器，準(zhǔn)備用于間接尋址

JZLCD_RET;字寄存器是零就反回

MOV#32D，&MPY;查表然后吧結(jié)果送到寄存器

MOVR14，&OP2

MOV&RESLO，LCD_COUNT_RAM

ADD#LCD_DB，LCD_COUNT_RAM

MOVLCD_COUNT_RAM，R14

MOV.B#32D，LCD_R0_RAM;R14用于放計(jì)算查找數(shù)據(jù)的個數(shù)

LCD_PAGE

MOV.BLCD_PAGE_BRAM，LCD_COM_BRAM;把頁地址送到命令寄存器

CLRZ

BIT.B#BIT0，LCD_BIT_RAM

;LCD_BIT_RAM的BIT0=LCD_E1_E2為高時轉(zhuǎn)到E1發(fā)送，第就是E2

JZLCD_PAGE_E2;Z為零就轉(zhuǎn)到E2否則向下工作

LCD_PAGE_E1

CALL#LCD_E1_COM;向E1發(fā)送頁地址

JMPLCD_LIE;跳去列發(fā)送

LCD_PAGE_E2

CALL#LCD_E2_COM;向E2發(fā)送頁地址

LCD_LIE

MOV.BLCD_LIE_BRAM，LCD_COM_BRAM;把列地址送到命令寄存器

CLRZ

BIT.B#BIT0，LCD_BIT_RAM

;LCD_BIT_RAM為高時轉(zhuǎn)到E1發(fā)送，第就是E2

JZLCD_LIE_E2;Z為零就轉(zhuǎn)到E2否則向下工作

LCD_LIE_E1

CALL#LCD_E1_COM;向E1發(fā)送列地址

JMPLCD_DATA

LCD_LIE_E2

CALL#LCD_E2_COM;向E2發(fā)送列地址

LCD_DATA

CALL#LCD_FIND_DATA;調(diào)用數(shù)據(jù)發(fā)送命令

CLRZ

BIT.B#BIT0，LCD_PAGE_BRAM ;測試頁寄存器的BIT0位

JNZLCD_PAGE_0;大于零（即是BIT0=1）就轉(zhuǎn)

BIS.B#BIT0，LCD_PAGE_BRAM ;把頁寄存器的BIT0位置高（原來是低#0B8H/#0BAH）

JMPLCD_RETURN

LCD_PAGE_0

BIC.B#BIT0，LCD_PAGE_BRAM ;把頁寄存器的BIT0位置低（原來是高#0B9H/#0BBH）

INC.BLCD_LIE_BRAM;列地址加一

CLRZ

CMP.B#61D，LCD_LIE_BRAM;檢查列有沒有超過61列

JNZLCD_RETURN;Z大于零就轉(zhuǎn)等于零就向下工作

CLR.BLCD_LIE_BRAM;清列寄存器

CLRZ

BIT.B#BIT0，LCD_BIT_RAM ;測試LCD_BIT_RAM位在E1就轉(zhuǎn)為E2 在E2就立即反回

JNZLCD_PAGE_1;Z為零就轉(zhuǎn)到E2否則向下工作

JMPLCD_RET;轉(zhuǎn)到子程序反回命令

LCD_PAGE_1

BIC.B#BIT0，LCD_BIT_RAM ;把LCD_BIT_RAM位置低設(shè)為E2顯示狀態(tài)

JMPLCD_PAGE;反回頁傳送命令地址

LCD_RETURN

CLRZ

DEC.BLCD_R0_RAM;查找數(shù)據(jù)的個數(shù)寄存器減1

JNZLCD_PAGE;R14大于零轉(zhuǎn)回頁傳送命令地址

CLRZ

DEC.BLCD_R1_RAM;字個數(shù)寄存器減1

BIC.B#BIT0，LCD_PAGE_BRAM

JNZLCD_DISPALY;反回主顯示調(diào)用程序

LCD_RET

RET;反回主程序

;===================================================

LCD_FIND_DATA

MOV.B@R14+，LCD_DATA_BRAM

CLRZ

BIT.B#INV_BIT，LCD_BIT_RAM

JZNO_INV

INV.BLCD_DATA_BRAM

NO_INV CLRZ

BIT.B#BIT0，LCD_BIT_RAM ;測試LCD_BIT_RAM位在E1就轉(zhuǎn)為E2 在E2就立即反回

JZLCD_FIND_E2;Z為零就轉(zhuǎn)到E2否則向下工作

CALL#LCD_E1_DATA;調(diào)用E1數(shù)據(jù)發(fā)送子程序

JMPLCD_FIND_DATA_RET

LCD_FIND_E2

CALL#LCD_E2_DATA;調(diào)用E2數(shù)據(jù)發(fā)送子程序

LCD_FIND_DATA_RET

RET

END LCD