how to compare data

[Mus.me]

hello everyones i need help plz . im readin i2c eeprom and i wrote the same data in my code so im trying to write a code to compare the data of the ext eeeprom and the code data ex:

Include "modedefs.bas"
define osc 4


PORTA = 1
PORTB = 0
KEY VAR BYTE
KEY1 VAR BYTE
ADR VAR BYTE

SCAN:
FOR ADR = 0 TO 7
I2CREAD SDAT,SCLK,$A0,ADR,[KEY]
PAUSE 10
READ ADR,KEY1

PAUSE 10


IF (KEY = KEY1) THEN
 HIGH RELY 
PAUSE 1000
LOW RELY

 ENDIF
RETURN

END 
DATA @0,14,21,47,56,02,11,22,33

SO ID DID THIS CODE BUT IT WONT COMPARE ME THE SAME DATA FROM THE EXT EEPROM WITH THIS DATA IN THE CODE AND I WANT IT NOT TO TOGGLE LED1 WHEN ITS NOT THE SAME DATA FROM EXTERNAL EPPROM

[Ioannis]

Can you post all the code? I suppose you cut and paste a part of it, right?

Ioannis

[Mus.me]

PORTA = 1
PORTB = 0
KEY VAR BYTE
KEY1 VAR BYTE
ADR VAR BYTE
SYMBOL SCLK = PORTB.0
SYMBOL SDAT = PORTB.1
SYMBOL RELY = PORTB.3
SYMBOL STRT = PORTA.0

START:

IF STRT = 0 THEN GOSUB SCAN
ENDIF
GOTO START

SCAN:
FOR ADR = 0 TO 7
I2CREAD SDAT,SCLK,$A0,ADR,[KEY]
PAUSE 10
READ ADR,KEY1
PAUSE 10
 NEXT ADR
 IF UNLCK = 0 THEN 
I2CWRITE SDAT,SCLK,$A0,ADR,[KEY1]
 PAUSE 1000
IF (KEY = KEY1) THEN
 HIGH RELY 
PAUSE 1000
LOW RELY
ENDIF
RETURN
END 
DATA @0,14,21,47,56,02,11,22,33
this is  wat i have in the external eeprom 24c02 "14,21,47,56,02,11,22,33 the same data i want my code to compare it.when it similare with the internal data it toggle relay or led  if not similare it dont please help this wat i want to do but im sure there another way bcz this isnt working it does compare sometimes even the data not similare it toggle the led IF (KEY = KEY1) THEN

[Mus.me]

PORTA = 1
PORTB = 0
KEY VAR BYTE
KEY1 VAR BYTE
ADR VAR BYTE
SYMBOL SCLK = PORTB.0
SYMBOL SDAT = PORTB.1
SYMBOL RELY = PORTB.3
SYMBOL STRT = PORTA.0

START:

IF STRT = 0 THEN GOSUB SCAN
ENDIF
GOTO START

SCAN:
FOR ADR = 0 TO 7
I2CREAD SDAT,SCLK,$A0,ADR,[KEY]
PAUSE 10
READ ADR,KEY1
PAUSE 10
 NEXT ADR
IF (KEY = KEY1) THEN
 HIGH RELY 
PAUSE 1000
LOW RELY
ENDIF
RETURN
END 
DATA @0,14,21,47,56,02,11,22,33
this is  wat i have in the external eeprom 24c02 "14,21,47,56,02,11,22,33 the same data i want my code to compare it.when it similare with the internal data it toggle relay or led  if not similare it dont please help this wat i want to do but im sure there another way bcz this isnt working it does compare sometimes even the data not similare it toggle the led IF (KEY = KEY1) THEN

i hope someone will hel me

[aratti]

You simply put the IF/THEN in the wrong place. It must be within the FOR/NEXT loop.
I don't see the setting for the TRIS registers.

Al.

PORTA = 0
PORTB = 0
TrisA = %00000001  ' ????????????????
TrisB = %00000000  ' ???????????????
KEY VAR BYTE
KEY1 VAR BYTE
ADR VAR BYTE
SYMBOL SCLK = PORTB.0
SYMBOL SDAT = PORTB.1
SYMBOL RELY = PORTB.3
SYMBOL STRT = PORTA.0

START:
PAUSE 10
IF STRT = 0 THEN GOSUB SCAN
ENDIF
GOTO START

SCAN:
FOR ADR = 0 TO 7
I2CREAD SDAT,SCLK,$A0,ADR,[KEY]
PAUSE 10
READ ADR,KEY1
PAUSE 10

IF KEY = KEY1 THEN
HIGH RELY 
PAUSE 1000
LOW RELY
Pause 1000
ENDIF

NEXT ADR

RETURN
END 
DATA @0,14,21,47,56,02,11,22,33

[Mus.me]

ty arrati for help

[Mus.me]

ty for reply still the problem it toggle the rely even i change the data in ext epprom or in pic eeprom it still doing error im sure there other way to compare variables .plz need more help how to compare variables i want to do this project for doorlock so i will have 24c02 in my keys ty aratti

SCAN:
FOR ADR = 0 TO 7
NEXT ADR
I2CREAD SDAT,SCLK,$A0,ADR,[KEY] 'same data  as data eeprom  
PAUSE 10
READ ADR,KEY1    ' same data as external eeprom 24c02
PAUSE 100
IF (KEY = KEY1) THEN , here is the problem it does hight rely even i put diffirent data in key and key1
 HIGH RELY 
PAUSE 1000
LOW RELY
ENDIF

[Mus.me]

im trying to read and write gold card,i know it has pic16f877 and 24c16, useing pic 16f628 ,anyone has any ideas or datasheet or how to adress it or it need to be slave or wat ?and which 1 i use shiftout & shiftin or i2c, plz help

[Ioannis]

Gold card? Does this have to do with Sat TV?

Watch out. Jail is waiting for new roomers....

Ioannis

[Mus.me]

gold card? Does this have to do with sat tv?

Watch out. Jail is waiting for new roomers....

Ioannis

i know THEY were using them to watch tps france and digital plus spainISH before 2005 .but now they use abracadabra moresate team DSR SAT COMPANY IN EUROPE selling them i havnt got 1 ITS CHEAPER HERE 18£ TO WATCH ALL SCREMBEL CHANNELS BUT WE DONT USE THEM BCZ U HAVE TO FLASH UR DSR EVERY 3 DAYS NOW NONE HACKIN CHANNELS HERE BCZ THEY CHANGED TO OTHER SYSTEMS AND THE OTHER PROBLEM IS NOT ALOWED . Well im programing gold card but i donno how to adress it from pic.i want to use IT for my own project instead 24c02 scroll up , so just want help how to transfer data between pic and goldcard or piccard they call it just adress how can i access its eeprom is 24c16 thank u anyway for ur ideas

[Ioannis]

I have not used this cards, but I recall reading somewhere that you have to write some piece of software to have access in the EEPROM.

It is not directly accessible from the pins of the cards.

Check here: http://ucables.com/ref/SILVERCARD

If you know the internmal EEPROM connection you can do the rest...

Ioannis