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Reading from EEPROM

Say I have 3 vectors:

int16_t v1[8];
int16_t v2[8];
int16_t v3[8];
int8_t lock = 0;

I want to store the values ​​of arrays in an EEPROM. Here's what I did for this:

int i = 0; 
uint16_t * j =  (uint16_t*) 2 ;
short ratio=0;  
for ( i =0; i<8;i++){


    v1[i] = 22500;
    v2[i] = 10500;
    v3[i] = 20888;
}

I want to save the following values:

//  .startat at the 3rd byte 

//  v1[0]v2[0]v3[0]v1[1]v2[1]v3[1] ----------> v1[7]v2[7]v3[7]



for ( i = 0 ; i <8; i++ ){
    //printf("j = %d \n",j);
    eeprom_update_word (j++, v1[i]);
    eeprom_update_word (j++, v2[i]);
    eeprom_update_word (j++, v3[i]);
}

To check if the values ​​were saved correctly, I tried to print them, for example:

for (i=1; i < 26;i++ ){
    ratio =(short)eeprom_read_word((uint8_t*)i);
    printf(" WORD  %d     %d \n", i,ratio);
}

and I really don't understand the result:

 WORD  1     -7168
 WORD  2     22500
 WORD  3     1111
 WORD  4     10500
 WORD  5     -26583
 WORD  6     20888
 WORD  7     -7087
 WORD  8     22500
 WORD  9     1111
 WORD  10     10500
 WORD  11     -26583
 WORD  12     20888
 WORD  13     -7087
 WORD  14     22500
 WORD  15     1111
 WORD  16     10500
 WORD  17     -26583
 WORD  18     20888
 WORD  19     -7087
 WORD  20     22500
 WORD  21     1111
 WORD  22     10500
 WORD  23     -26583
 WORD  24     20888
 WORD  25     -7087

Any idea how to do this right?

I'v eexpend the for loop and the result looks half right !!

 WORD  1     -7168
 WORD  2     22500
 WORD  3     -4009
 WORD  4     22000
 WORD  5     9813
 WORD  6     21030
 WORD  7     -7086
 WORD  8     22500
 WORD  9     -4009
 WORD  10     22000
 WORD  11     9813
 WORD  12     21030
 WORD  13     -7086
 WORD  14     22500
 WORD  15     -4009
 WORD  16     22000
 WORD  17     9813
 WORD  18     21030
 WORD  19     -7086
 WORD  20     22500
 WORD  21     -4009
 WORD  22     22000
 WORD  23     9813
 WORD  24     21030
 WORD  25     -7086
 WORD  26     22500
 WORD  27     -4009
 WORD  28     22000
 WORD  29     9813
 WORD  30     21030
 WORD  31     -7086
 WORD  32     22500
 WORD  33     -4009
 WORD  34     22000
 WORD  35     9813
 WORD  36     21030
 WORD  37     -7086
 WORD  38     22500
 WORD  39     -4009
 WORD  40     22000
 WORD  41     9813
 WORD  42     21030
 WORD  43     -7086
 WORD  44     22500
 WORD  45     -4009
 WORD  46     22000
 WORD  47     9813
 WORD  48     21030
 WORD  49     82
 WORD  50     0
 WORD  51     0

I can’t explain what is going on here!

** UPDATE ** after changing cycle:

for (i=1; i < 25;i++ ){
            ratio =eeprom_read_word(j);
            printf(" WORD  %d     %d \n", i,ratio);
            j  = j +2; 
        }

output now:

 WORD  1     22500
 WORD  2     21030
 WORD  3     22000
 WORD  4     22500
 WORD  5     21030
 WORD  6     22000
 WORD  7     22500
 WORD  8     21030
 WORD  9     22000
 WORD  10     22500
 WORD  11     21030
 WORD  12     22000
 WORD  13     22500
 WORD  14     22000
 WORD  15     0
 WORD  16     0
 WORD  17     22500
 WORD  18     22000
 WORD  19     0
 WORD  20     0
 WORD  21     22500
 WORD  22     22000
 WORD  23     0
 WORD  24     0

Still not getting where it comes from 0?

+4
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2 answers

24 16- , 48 , EEPROM, 2, 49. , 1, . 1, , ?

* , sizeof (short). .

, 24 .

+1

donjuedo, uint16_t eeprom. , 2 . , uint8_t ( "eeprom_read_word" ), . , . .

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