[avr-gcc-list] avr-gcc - global variables

[Stein Haaland]

I am trying to write a number of bytes into EEPROM
(actually a set of characters for a 5x7 dot matrix),
and need some help with global variables :


a) What is wrong with the following code :

//
// character = global variable
//
volatile uint8_t character[90][7] =
{
{ 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F },
{ 0x13, 0x13, 0x13, 0x13, 0x13, 0x1F, 0x13 },
{ 0x15, 0x15, 0x15, 0x1F, 0x1F, 0x1F, 0x1F },
{ ... }
};


void fill_eeprom()
{
  uint8_t val;
  uint16_t i,j,addr;
  
  for (i=0; i<90; i++) {
     for (j=0; j<7; j++) { 
       addr = 7*i+j; 
       val = character[i][j];
       eeprom_wb(addr,val);
       PORTC = ~val;
       wait(400); 
       PORTC = ~0x00;
       wait(400); 
     } 
  }
}

void main(void)
{ 
  ....
}


Port C switches between 0xFF (= ~0x00) and 0x00 - no sign
of my character table.


b) Is there a better way to do this than the above approach ?


Sys :
MDK Linux 10.0.
avr-gcc (GCC) 3.3.2 
objcopy 2.14 20030612
uisp version 20040311
STK500 testboard, AT90S8515

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SEH.