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How to write an arrray of structs into EEPROM?

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40inD

Joined: 30 Jul 2007
Posts: 112
Location: Moscow, Russia

How to write an arrray of structs into EEPROM?

Posted: Tue Dec 18, 2018 5:22 am

I have the following type of array:

Code:

typedef struct{
int16 hr;
int8 err;
} err_field;

err_field my_errors[10];

How to store it in PIC's EEPROM?

18F2550

Ttelmah

Joined: 11 Mar 2010
Posts: 19552

Posted: Tue Dec 18, 2018 8:08 am

Code:

void to_eeprom(char * thing, int8 size, int16 address)
{
int16 ctr;
for (ctr=0;ctr<size;ctr++) //loop through the number of bytes
write_eeprom(address++,*(thing++)); //writing bytes to address++
}

//Then call with

Code:

to_eeprom((char *)my_errors, sizeof(my_errors), 0); //to write starting at zero

40inD

Joined: 30 Jul 2007
Posts: 112
Location: Moscow, Russia

Posted: Thu Dec 20, 2018 6:20 am

Thanks!
And reading from eeprom must be looks like:

Code:

void read_errors(char * thing, int8 size, int16 address)
{
int16 ctr;
for (ctr=0;ctr<size;ctr++)
*(thing++)=read_eeprom(address++);
}

read_errors((char *)my_errors, sizeof(my_errors), EF_ADDR);

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