Writing to Internal memory of mcu

[internetuser2k11]

Hi!

I am using PIC18F4523 for my project.

Values of some integer variables are set using increment and decrement pushbuttons.

I want to know wheather and how i can store the variables in the internal memory of mcu and also external eeprom on power failure.

I want to read the variables on power up from internal eeprom and external eeprom.

I am using mikroC PRO and mikroBasic PRO.

Thanks

internetuser2k11

 

[aly]

18F4523 Have internal EEPROM don't need to external EEPROM

See Mikroe EEPROM Library help it's easy to use.

"

program Eeprom

dim counter as byte ' loop variable

main:
ANSEL = 0 ' Configure AN pins as digital I/O
ANSELH = 0
C1ON_bit = 0 ' Disable comparators
C2ON_bit = 0

PORTB = 0
PORTC = 0
PORTD = 0

TRISB = 0
TRISC = 0
TRISD = 0

for counter = 0 to 31 ' Fill data buffer
EEPROM_Write(0x80+counter, counter) ' Write data to address 0x80+ii
next counter

EEPROM_Write(0x02,0xAA) ' Write some data at address 2
EEPROM_Write(0x50,0x55) ' Write some data at address 0150

Delay_ms(1000) ' Blink PORTB and PORTC diodes
PORTB = 0xFF ' to indicate reading start
PORTC = 0xFF
Delay_ms(1000)
PORTB = 0x00
PORTC = 0x00
Delay_ms(1000)

PORTB = EEPROM_Read(0x02) ' Read data from address 2 and display it on PORTB
PORTC = EEPROM_Read(0x50) ' Read data from address 0x50 and display it on PORTC

Delay_ms(1000)

for counter = 0 to 31 ' Read 32 bytes block from address 0x100
PORTD = EEPROM_Read(0x80+counter) ' and display data on PORTC
Delay_ms(100)
next counter
end.

"