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boraciner
Joined: 29 Jul 2009
Posts: 9
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| problem: storing int16 address data into eeprom (int8) ???? |
 Posted: Wed Jul 29, 2009 1:01 am |
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Hi! I need to store my address data at the "0" location of my external eeprom. If "anahtar" --> means switch is 0 then go on to store char data which is came from keyboard() function.
If anahtar=1 start send the stored characters via serial port.
Thanks. ??
my code is below: but It didn't worked ?? =(( 
| Code: | #include "D:\ccs\dene.h"
#include "d:\ccs\keyboard.c"
#define EEPROM_SDA PIN_A2
#define EEPROM_SCL PIN_A3
#include "24256.c"
#use i2c(master, sda=PIN_A2, scl=PIN_A3)
unsigned char k;
long int i,j;
void EEPROM_write(int address,int16 data);
int16 EEPROM_read(int address);
void main()
{
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
//Setup_Oscillator parameter not selected from Intr Oscillator Config tab
Set_Tris_B(0b00111000);
init_ext_eeprom();
// TODO: USER CODE!!
delay_ms(500); //let the system to stabilize
i=2;
printf("Program Basliyor..");
for(;;)
{
if(!Anahtar){
i=EEPROM_read(0);
k=keyboard();
write_ext_eeprom(i,k);
i++;
EEPROM_write(0,i);
printf("%c",k);
}
else{
j=2;
i=EEPROM_read(0);
EEPROM_write(0,j);
for(j=2;j<=i;j++)
{
k=read_ext_eeprom(j);
printf("%c",k);
}
}
}}
void EEPROM_write(int address,int16 data) { //Sub to write a long value to the EEPROM
int i; //i is a loop counter; address is the eeprom offset address
for (i = 0; i < 2; i++) //Set up loop to write the two address with the data
write_ext_eeprom (i + address, *(&data +i)); //Write data to the eeprom using the address point to by &data + 1
}
int16 EEPROM_read(int address) { //Sub to read a int16 value from the EEPROM
int i; //i is a loop counter; address is the eeprom address that has the data to read
int16 data; //the value at the eeprom address
for (i = 0; i < 2; i++) //Set up loop to read the two address with the data
*(&data + 1) = read_ext_eeprom (i + address); //put the data from the eeprom in the address pointed to by &data
return(data); //Return the data to the calling sub
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Jul 29, 2009 1:24 am |
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There are routines to read and write an int16 to external eeprom
in this file:
| Quote: | | c:\program files\picc\drivers\external_eeprom.c |
For the 24LC256, you need to use a 16-bit address variable, so
define it before you include the file. Example:
| Code: |
#define EEPROM_ADDRESS int16
#include <external_eeprom.c> |
Use those routines instead of yours. You will get better results. |
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boraciner
Joined: 29 Jul 2009
Posts: 9
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| Posted: Wed Jul 29, 2009 1:40 am |
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ok! Thanks a lot , I solved it 1-2 mins ago, by
dividing int16 to int8 and int8 then I wrote these 2 variable in 2 serial location.
When I want to come together these 2 variables, I read orderly than make it ;) !
Thanks a lot for your info. I didn't know that lib. |
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