Compact Flash help

[bassin]

I have a problem whith a compact flash card...
when I use this piece of code

Code: Select all

Cf_Write_Init(590, 1);
 for (i = 0; i < 512; i++)
    Cf_Write_Byte(i+11);

and after use this one

Code: Select all

Lcd_Cmd(Lcd_CLEAR);
 i=0;
 Delay_ms(1000);
 Cf_Read_Init(590, 1);
 for (i = 0; i < 512; i++) {
    size = Cf_Read_Byte();
    LCD_Out(1,1, size);
    Delay_ms(200);
    Lcd_Cmd(Lcd_CLEAR);
    IntToStr(i, txt);
    LCD_Out(2,2, txt);
    Delay_ms(100);
 }

I recive random characters on the LCD.
The pic is a 18f458 and I'm using 10MHz osc whith OSCS_OFF, BOR_OFF, PWRT_OFF, DEBUG_OFF, WDT_OFF, LVP_OFF .
some idea?

[gambrose]

i don't think double posting helps.

Have you tried looking at what is written to the compact flash card to ascertain if it is the compact flash write or the read and display that is at fault.

[bassin]

I'm using winhex to check the card, and at sector 590 the data it's the same all time. There is some pull-up resistor, in the hardware scheme only pin 26 it's pulled-up. I don't know what do!!!!

[anton]

Try checking the data at sector 638 in winhex