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chore(comments/format): commented and formatted all the c files

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Maix0 2026-04-14 09:56:31 +02:00
parent f52ce027a6
commit dbcc449552
5 changed files with 157 additions and 72 deletions
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42
ex03/main.c
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@ -7,21 +7,31 @@
#define BTN_PORT PIND2
int main(void) {
// set pin to output
DDRB |= (_BV(LED_PORT));
// set pin to output
// DDRB is the register that set the direction of the pins (IN/OUT)
// we want to say that the LED_PORT pin is an OUT pin, which isnt the default
DDRB |= (_BV(LED_PORT));
bool led_state = false;
bool prev = (PIND & _BV(BTN_PORT));
while (true) {
bool cur = (PIND & _BV(BTN_PORT));
if (prev && !cur) {
led_state = !led_state;
if (led_state)
PORTB |= (_BV(LED_PORT));
else
PORTB &= ~(_BV(LED_PORT));
}
prev = cur;
_delay_ms(20.f);
}
// lets keep track of the led state here
bool led_state = false;
// lets also keep track of the button state for the last iteration
bool prev = (PIND & _BV(BTN_PORT));
while (true) {
// we read it
bool cur = (PIND & _BV(BTN_PORT));
// if it wasnt pressed before, but pressed now -> it just turned on
if (prev && !cur) {
// toggle the state and update the led with the new state
led_state = !led_state;
if (led_state)
PORTB |= (_BV(LED_PORT));
else
PORTB &= ~(_BV(LED_PORT));
}
// keep track of the old state for next iteration
prev = cur;
// sleep
_delay_ms(20.f);
}
}