Saving RFID Data

[Pesticida]

Thats mean i must use something like this:

EraseEEprom= $A8
EEprom_Block = 0
Tmp_Daten = $00

EraseEEprom:
Erase_Loop:
for NextAdr = 0 to 255
I2CWrite sda,scl,EEprom_Adresse,NextAdr,[Tmp_Daten]
pause 10
Sound Buzzer,[122,1]
next NextAdr
EEprom_Adresse = EEprom_Adresse + 2
EEprom_Block = EEprom_Block + 1
if EEprom_Block => 4 then EEprom_Block = 0 : goto Exit_Loop2
goto Erase_Loop
Exit_Loop2:
Sound Buzzer,[122,250]
goto Main


Regards pesti

[skimask]

Make it easy on yourself, get a 24C256, 32k x 8 eeprom. Word address, byte data

I2Cwrite datapin, clockpin, $a0, address, data

But if you're hellbent on using the 24c08...

address var word 'only use lower 10 bit
addr var byte
control var byte

addr = address.lowbyte
control = $a0 + ( address.highbyte << 2 )
i2cwrite datapin, clockpin, control, address, data-whatever

[Pesticida]

OK,

I must write this :
Control = $A1
For address = 0 to 1023
addr = address.lowbyte
control = $a0 + ( address.highbyte << 2 )
I2CRead sda, scl,Control, addr,[EEprom_Daten[Byte_Count]]
Pause 10
Byte_Count = Byte_Count + 1
if Byte_Count > 15 then
Byte_Count = 0
HSEROUT [DEC3 NextAdr-15, ": ",HEX2 EEprom_Daten[0],HEX2 EEprom_Daten[1],HEX2 EEprom_Daten[2],HEX2 EEprom_Daten[3],HEX2 EEprom_Daten[4],HEX2 EEprom_Daten[5],HEX2 EEprom_Daten[6],HEX2 EEprom_Daten[7],DEC2 EEprom_Daten[8],DEC2 EEprom_Daten[9],DEC2 EEprom_Daten[10],DEC2 EEprom_Daten[11],DEC2 EEprom_Daten[12],DEC2 EEprom_Daten[13],HEX2 EEprom_Daten[14],HEX2 EEprom_Daten[15],13,10]
endif
next address

Or I make again a mistake ?!

Regards Pesti

[skimask]

Or I make again a mistake ?!

Regards Pesti

I don't know. Does it work?
If it does, then you didn't make a mistake.
If it doesn't, then there must be a flaw in your logic.

[Pesticida]

Hi

No this dont work!

My chip have the Pin E2 to VCC thats mean The Device Adress is :10101000 for Write and
10101001 For Reading.

I try all combination but dont work.

Regards Pesti

[skimask]

Hi

No this dont work!

My chip have the Pin E2 to VCC thats mean The Device Adress is :10101000 for Write and
10101001 For Reading.

I try all combination but dont work.

Regards Pesti

Ok, is it the serial part that's not working?
The EEPROM is returning bad data?
Is the program running?
Which is it?
Think simple...build it up...
Make the LED blink...Show some data on the LED...Make the HSEROUT work
I know you don't have an LED here...maybe you should put one there eh?

[Pesticida]

Hi,

im so Stupid I forgott something important ,on the Chip I forgott to set WC Low,and i use now more pause to write and to read data.
Now is working but what i don't understand ,on the 24C02 i dont set wc too and has working!

What you think is this a good Idea to use 24c chips to store rfid tags data,the chips have a 1000.000 write cyclus.

When I write on one day Double (Write and Erase) I have then on one Day maybe 4 Write Cycle.

Thank You

Regards Pesti