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I2C PROBLEM IN ASSEMBLY(8051).Help me,please.

Started by colin ●September 17, 2004
I have a problem in my program.
This program is to write in eeprom(hn58x2432) & read from it to
display
to lcd  module.It is transmit by I2C.
Please help me to check my program.

Thanks.
It have some problem when it compiled.Below is the error message.


LINE 11       ACK     REG P2.0==============>ILLEGAL MNEMONIC
LINE 12       SCL     REG P2.1==============>ILLEGAL MNEMONIC
LINE 13       SDA     REG P2.2==============>ILLEGAL MNEMONIC
LINE 14       COUNTD  EQU 41H ==============>ILLEGAL MNEMONIC
....
Just like that
===============================================================
I don't know some else bugs in it,so help me check it,please.
Thanks.
===============================================================





;=======================================================
;                MAIN PROGRAM
;=======================================================
	ORG	0000H
;=====================================================
;I2C	SET I2C MODULE PINS
;=====================================================
;P1為LCM資料線專用接腳,P3為LCM之E,R/S,W/R用
;=====================================================
	ACK	REG	P2.0	;I2C ACKNOWLEDGE
	SCL	REG	P2.1	;I2C SERIAL CLOCK
	SDA	REG	P2.2	;I2C SERIAL DATA
	COUNTD	EQU	41H	;倒數用計數器
	COUNTU	EQU	42H	;計數用
	ADR	EQU	43H	;I2C EEPROM ADDRESS
	DATA	EQU	44H	;I2C要傳輸的資料
	X	EQU	45H	;界面常數
;-------------------------------------------------------------------------------
       	MOV	SP,#5FH
      	MOV    	P2,#0EH
       	ACALL	INIT		;INITIAL LCM
	ACALL  	LINE1		;游標停在第一行第一個字
	MOV       	DPTR,#TAB1 
	;將資料指標暫存器指向程式內資料所在
	ACALL   	WR_TO_ROM	;將資料寫入ROM
	ACALL	RD_FR_ROM	;將ROM資料讀出並顯示於LCM
;===============================
OK	AJMP	OK
;===============================	
;	SUB ROUTINE
;===============================
INIT	ACALL	DLY40		;INITIAL LCM
	MOV	A,#38H		;設定LCM為8位元及2行顯示,5x7
dots
	ACALL	WRINS		;設定E ENABLE
把指令碼設定進去
 	MOV	A,#38H
	ACALL	WRINS
	MOV	A,#38H
	ACALL	WRINS
	MOV	A,#38H
	ACALL	WRINS

	MOV	A,#08H		;#00001000B 液晶顯示OFF
	ACALL	WRINS
;=============================
	MOV	A,#01H		;#00000001B
清除液晶顯示
	ACALL	WRINS
;=============================
	MOV	A,#06H		;#00000110B
寫入1BYTE,游標右移且ACC加一
	ACALL	WRINS
;=============================
	MOV	A,#0CH		;#00001100B
液晶顯示ON,不顯示游標
	ACALL	WRINS
	RET
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
LINE1	MOV	A,#10000000B	;顯示起始位址為第一行第一個字
	ACALL	WRINS
	RET
;=============================
LINE2	MOV	A,#11000000B	;顯示起始位址為第二行第一個字
	ACALL	WRINS
	RET
;------------------------------------------------------------
;LCD  	把指令碼設定進去直接控制LCD的螢幕顯示
;------------------------------------------------------------
WRINS	MOV	P3,#00011111B	;P3為R/S, E , R/W
	NOP
	SETB	P3.5		;設定E為 ENABLE
	MOV	P1,A		;將A內容設定進去
	NOP
	CLR	P3.5
	ACALL	DLY8
	RET
;------------------------------------------------------------
;LCD    	把DATA碼設定進去
來顯示內定的文字
;------------------------------------------------------------
WRDATA	MOV	P3,#10011111B
	NOP
	SETB	P3.5
	MOV	P1,A
	NOP
	CLR	P3.5
	ACALL	DLY16
	RET
;------------------------------------------------------------

;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;I2C	把程式中之字元碼寫入ROM中
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
WR_TO_ROM:
	CALL	I2C_WRITE_ADR	;傳輸目的ROM的位址,狀態為寫入
	MOV	R7,#00H		;把位址DPTR起的字元碼逐一送至EEPROM模組
NEXT	MOV	A,R7	  	;直至遇到結束碼10H才返回主程式
	MOVC	A,@A+DPTR	;DPTR指到程式內的資料起始位址
	CLR	SDA		;開始傳輸程式內的資料到ROM
	MOV	COUNTD,#8
	MOV	DATA,A		;將A的內容傳至DATA,由DATA作暫存器寫入
IWA	RLC	DATA
	MOV	SDA,C
	SETB	SCL
	CLR	SCL
	DJNZ	COUNTD,IWA
	CLR	ACK
	SET	ACK	
;=======檢查後面字元是否10H================================================
	CJNE	A,#10H,RD_NX	;讀到10H,即停止讀取及寫入動作
	RET
RD_NX: 	
	INC	R7		;不是讀到10H,即繼續讀取下一個字元R7作為計數器
	AJMP	NEXT		;R7作為計數器看傳入多少字元
=========================================================================
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;I2C	開始讀出ROM內的資料並顯示於螢幕
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
RD_FR_ROM:
	MOV	DATA,#0
	CALL	I2C_READ_ADR	;傳輸目的ROM的位址,狀態為讀出
	MOV	A,R7		;把傳至ROM的字元碼,倒數送出至LCM模組來顯示
	MOV	COUNTU,A  	;由R7可看出傳入多少字元到ROM裡面,此值傳入COUNTU
RD_NX	CLR	SDA		;開始傳輸ROM內的資料到LCM
	MOV	COUNTD,#8
RFR	MOV	X,#0
	MOV	A,#0
	MOV	C,SDA		;從SDA開始接收資料
	ADDC	A,X		;接收SDA加到A累積器中
	ADD	DATA,A		;A內容傳給DATA
	RL	DATA
	SETB	SCL
	CLR	SCL	
	DJNZ	COUNTD,RFR	;傳完8個字元後
	CLR	ACK		;給一個應答
	SET	ACK
	MOV	A,DATA		;將傳入的字元傳至A累積器
	CALL	WRDATA		;送出字元讓LCM顯示
	DJNZ	COUNTU,RD_NX	;持續讀出下一個字元,直到所有字元讀出
 	RET

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

;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;I2C	設定指定
ROM的位址並設定為寫入狀態
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;===========================================================
I2C_WRITE_ADR:
	CLR	SDA
	SET	ACK
	MOV	COUNTD,#8
	MOV	ADR,#11100010B	;設定寫入之ROM及其位址,狀態為寫入
	CALL	I2C_START
IWA	RLC	ADR
	MOV	SDA,C
	SETB	SCL		;資料傳輸完SCL須為高準位
	CLR	SCL		;資料傳輸時SCL須為低準位
	DJNZ	COUNTD,IWA
	CLR	ACK	
	SET	ACK
	RET	
;===========================================================
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;I2C	設定指定
ROM的位址並設定為讀出狀態
;\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
;===========================================================
I2C_READ_ADR:
	CLR	SDA
	SET	ACK
	MOV	COUNTD,#8
	MOV	ADR,#11100011B	;設定寫入之ROM及其位址,狀態為寫入
	CALL	I2C_START
IRA	RLC	ADR
	MOV	SDA,C
	SETB	SCL		;資料傳輸完SCL須為高準位
	CLR	SCL		;資料傳輸時SCL須為低準位
	DJNZ	COUNTD,IRA
	CLR	ACK
	SET	ACK	
	RET	
;===========================================================
;===============================
; I2C	I2C START CONDITION
;===============================
I2C_START:
	SETB	SCL
	SETB	SDL
	CLR	SDL	
	CLR	SCL	;資料傳輸時SCL須為低準位
	RET
;===============================
;I2C	 I2C STOP CONDITION	
;===============================
I2C_STOP:
	SETB	SCL	
	CLR	SDL	
	SETB	SDL
	CLR	SCL
	RET
;==============================
;I2C	I2C INPUT DATA STATE
;==============================
;==============================
; 
;==============================	
;++++++++++++++++++++++++++++++++
;DELAY 40ms
;++++++++++++++++++++++++++++++++
DLY40	MOV	R6,#100
DL0	MOV	R7,#200
	DJNZ	R7,$
	DJNZ	R6,DL
	RET
;++++++++++++++++++++++++++++++++
;DELAY 8ms
;++++++++++++++++++++++++++++++++
DLY8	MOV	R6,#20
DL1	MOV	R7,#200
	DJNZ	R7,$
	DJNZ	R6,DL1
	RET
;++++++++++++++++++++++++++++++++
;DELAY 160us
;++++++++++++++++++++++++++++++++
DLY16	MOV	R6,#80
	DJNZ	R6,$
	RET
;++++++++++++++++++++++++++++++++

;==============================
;====       STORE DATA       =========
;==============================
TAB1	DB	"4444"
	DB	"4444"
	DB	10H
TAB2	DB	"abcdABCD"
	DB	10H
	END
;======================================================================
Reply by Peter ●September 17, 20042004-09-17
"colin" <colin@edt.com.tw> wrote in message 
news:64b68ee4.0409170108.1582a7dc@posting.google.com...

>I have a problem in my program.
> This program is to write in eeprom(hn58x2432) & read from it to
> display
> to lcd  module.It is transmit by I2C.
> Please help me to check my program.
>
> Thanks.
> It have some problem when it compiled.Below is the error message.
>
>
> LINE 11       ACK     REG P2.0==============>ILLEGAL MNEMONIC
> LINE 12       SCL     REG P2.1==============>ILLEGAL MNEMONIC
> LINE 13       SDA     REG P2.2==============>ILLEGAL MNEMONIC
> LINE 14       COUNTD  EQU 41H ==============>ILLEGAL MNEMONIC
> ....
> Just like that
>

It means that you have a word that your compiler doesn't understand.
First make sure that there are no spaces before ACK, SCL, SDA and COUNTD 
otherwise the assembler will treat these as instructions (mnemonics) rather 
than a logical name.

If that fails you should look up how to declare port bits. I have never 
touched an 8051 but my next guess would be that it doesn't like REG and 
maybe you could replace "REG" with "bit".

Peter
Reply by Neil Kurzman ●September 18, 20042004-09-18
First what assembler are you using.
Second try www.8052.com
Reply by Bruchor ●September 18, 20042004-09-18
Hi! 
In case the REG command, you must previously define the Port2 address, and
than define your bits.
For example:

P2   EQU    0A0H   ; define real port address

SDA  REG    P2.0   ; at now we can define our signals
...
..

Best regards!
Reply by Bruchor ●September 18, 20042004-09-18
Hi!
In case the REG command, at first, you must define the port address, and
than define bits.
For example:

P2      EQU     0A0H    ; real port address

ACK	REG	P2.0	;I2C ACKNOWLEDGE
SCL	REG	P2.1	;I2C SERIAL CLOCK
SDA	REG	P2.2	;I2C SERIAL DATA

Best regards!
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