Hi Tom,
>> #define F_CPU 16000000UL /* 16 MHz CPU clock */
>> #include <util/delay.h>
>> #define OUTPUTPORT PORTB
>> #define OUTPUTPIN PB7
>> int main (void)
>> {
>> DDRB = 0xff; // all outputs
>> while (1) /* loop forever */
>> {
>> if ((PORTB & _BV(PB7)) > 0) PORTB &= ~_BV(PB7);
>> else PORTB |= _BV(PB7);
>> delay_ms(500);
>> }
>> return (0);
>> }
>
> A couple coding problems.
>
> You need to include avr/io.h to get port definitions.
>
I tried with and without. With I get
-bash-3.2$ make
avr-gcc -mmcu=atmega2560 -Wall -O2 -I /usr/local/avr/include -I./ -o
toggle_led.out main.c
unknown MCU 'atmega2560' specified
Known MCU names:
avr2
at90s2313
...
attiny15
attiny28
main.c:1: error: MCU 'atmega2560' supported for assembler only
In file included from main.c:4:
/usr/local/avr/include/avr/io.h:530:6: warning: #warning "device type not
defined"
main.c: In function 'toggleOutput':
main.c:19: error: 'PORTB' undeclared (first use in this function)
main.c:19: error: (Each undeclared identifier is reported only once
main.c:19: error: for each function it appears in.)
main.c:19: error: 'PB7' undeclared (first use in this function)
main.c: In function 'main':
main.c:34: error: 'DDRB' undeclared (first use in this function)
main.c:45: error: 'PORTB' undeclared (first use in this function)
main.c:45: error: 'PB7' undeclared (first use in this function)
make: *** [toggle_led.out] Error 1
:-(
Thanks,
Andreas
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