marco/inv-sw-32u4
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Toggle PD6 instead of PC7 when timer compare interrupt occurs.

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Move timer interrupt routine to timer.c
Change timer parameters
This commit is contained in:
Marco 2022-05-13 01:24:38 +02:00
parent 510cba47b1
commit 3fd547f2ea
3 changed files with 15 additions and 12 deletions
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4
src/commands.c
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@ -97,8 +97,8 @@ void cmd_handle_switch(void)
{ {
int state = 0; int state = 0;
PORTC ^= (1<<PC7); PORTD ^= (1<<PD6);
state = PORTC & (1 << PC7); state = PORTD & (1 << PD6);
printf("Pin state is %i\r\n", state); printf("Pin state is %i\r\n", state);
} }

10
src/inverter.c
View File

@ -11,9 +11,11 @@ int main()
/* With this MCU frequency, it is 38,4k baud */ /* With this MCU frequency, it is 38,4k baud */
uart_init(12); uart_init(12);
printf("Starting up!\r\n");
/* Make PB2 an output pin */ /* Make PB2 an output pin */
DDRB |= (1 << DDB2); DDRB |= (1 << DDB2);
DDRC |= (1 << DDC7); DDRD |= (1 << DDD6);
initCtcTimer0(); initCtcTimer0();
@ -28,9 +30,3 @@ int main()
return 0; return 0;
} }
ISR(TIMER0_COMPA_vect)
{
PORTB |= (1 << PB2);
}

11
src/timer.c
View File

@ -1,4 +1,6 @@
#include <avr/io.h> #include <avr/io.h>
#include <avr/interrupt.h>
#include "include/timer.h" #include "include/timer.h"
void initCtcTimer0(void) void initCtcTimer0(void)
@ -10,7 +12,7 @@ void initCtcTimer0(void)
TIMSK0 |= (1 << OCIE0A); TIMSK0 |= (1 << OCIE0A);
/* Select clock. Prescaler of 8 */ /* Select clock. Prescaler of 8 */
TCCR0B |= (1 << CS01); TCCR0B |= (1 << CS02) | (1 << CS00);
/* Use CTC Mode */ /* Use CTC Mode */
TCCR0A |= (1 << WGM01); TCCR0A |= (1 << WGM01);
@ -18,7 +20,7 @@ void initCtcTimer0(void)
/* /*
* OCR0A contains TOP value for counter: * OCR0A contains TOP value for counter:
*/ */
OCR0A = 25; OCR0A = 100;
} }
void initOverflowTimer0(void) void initOverflowTimer0(void)
@ -35,3 +37,8 @@ void initOverflowTimer1(void)
TCCR1B |= (1<<CS11); TCCR1B |= (1<<CS11);
TIMSK1 |= (1<<TOIE1); TIMSK1 |= (1<<TOIE1);
} }
ISR(TIMER0_COMPA_vect)
{
PORTB |= (1 << PB2);
}