[avr-gcc-list] AVR butterfly Timer1

[Dave]

Hello!

Instead of the 8-bit timer/counter, I decided to use
the 16-bit one. Now, I'm having trouble with timer1 on
my AVR butterfly. I'm trying to print the counted
ticks on the LCD, but nothing shows up on the LCD. The
following is my code:

// initiliaze timer/counter1
void Timer_Init() 
{
        cli(); // disable interrupts
        TCCR1A = 1; // internal clock will be used    
       
        TCCR1B = 1;
        TCNT1 = 0; // start timer
        sei();
}

// read timer1
unsigned int Timer_Read() {
        unsigned int i;

        cli();
        i = TCNT1;
        sei();
        return i;
}

int main(void)
{    
        PGM_P statetext;
        char LCD_table[10] =
{'0','1','2','3','4','5','6','7','8','9'};
        unsigned int i, t;
        
        // Initial state variables
        statetext = PSTR("DONE");
        LCD_Init();
        sei(); 
        
        Timer_Init();
        foo(); 
        t = Timer_Read();
        
        LCD_puts_f(statetext, 0);
        Delay(30); 

        for (;;) {      
                if (t < 10)
                        LCD_putc(0, LCD_table[t]);
                else if (t < 100) {
                        i = t / 10;
                        LCD_putc(0, LCD_table[i]);
                        i = t % 10;
                        LCD_putc(1, LCD_table[i]);
                }
                else if (t < 1000) {
                  i = t / 100;
                  LCD_putc(0, LCD_table[i]);
                  i = (t % 100) / 10;
                  LCD_putc(1, LCD_table[i]);
                  i = (t % 100) % 10;
                  LCD_putc(2, LCD_table[i]);
                }
                ....
                ....
    }   
        return 0;
}

Without the timer operations, "DONE" shows up on the
LCD when foo() finishes. When the timer operations are
included, nothing shows up on the LCD, not even
"DONE". Any help on this matter will be greatly
appreciated. Thank you.

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