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Outsourced timer and external interupt initialization

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Signed-off-by: Ralf Ramsauer <ralf@ramses-pyramidenbau.de>
This commit is contained in:
Ralf Ramsauer 2015-09-17 15:05:32 +02:00
parent 133a8729ac
commit 7b659a832e
1 changed files with 28 additions and 12 deletions
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40
avr-code/main.c
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@ -16,11 +16,30 @@
static volatile enum {LOCKED, UNLOCKED} state = LOCKED; static volatile enum {LOCKED, UNLOCKED} state = LOCKED;
static volatile bool schnapper = false; static volatile bool schnapper = false;
static inline void timer_init(void)
{
// Config the timer
// The 16bit Timer1 is used for resetting the lock state,
// if the UART stops receiving the unlock command
TIMSK |= (1<<TOIE1);
TIFR |= (1<<TOV1);
TCCR1A = 0;
TCCR1B = (1<<CS12);
}
static inline void reset_timeout(void) static inline void reset_timeout(void)
{ {
TCNT1 = 0; TCNT1 = 0;
} }
static inline void extint_init(void)
{
// Configure external interrupts
// External interrupts are used for Button Unlock an Lock
MCUCR = (1<<ISC11)|(1<<ISC01);
GIMSK |= (1<<INT0)|(1<<INT1);
}
void uart_handler(const unsigned char c) void uart_handler(const unsigned char c)
{ {
char retval = c; char retval = c;
@ -105,29 +124,26 @@ out:
int main(void) int main(void)
{ {
// Disable all interrupts
cli(); cli();
// Init IO
io_init(); io_init();
// Wait a bit to settle down // Wait a bit to settle down
_delay_ms(1000); _delay_ms(1000);
// Init Uart
uart_init(); uart_init();
uart_set_recv_handler(uart_handler); uart_set_recv_handler(uart_handler);
// Config the timer // Init Timer
// The 16bit Timer1 is used for resetting the lock state, timer_init();
// if the UART stops receiving the unlock command
TIMSK |= (1<<TOIE1);
TIFR |= (1<<TOV1);
TCCR1A = 0;
TCCR1B = (1<<CS12);
reset_timeout(); reset_timeout();
// Configure external interrupts // Init external interrupts
// External interrupts are used for Button Unlock an Lock extint_init();
MCUCR = (1<<ISC11)|(1<<ISC01);
GIMSK |= (1<<INT0)|(1<<INT1);
// Enable all interrupts
sei(); sei();
for(;;) { for(;;) {