avr/display-i2c/main.c

#include <display.h>
#include <stdio.h>

int main(void) {
    display_t display = {
        .reg = {
            .output         = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 7 },
            .shift_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 6 },
            .latch_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 5 },
        },
    };

    int count = 0;
    while (1) {
        display_init(&display);

        char msg[15];
        snprintf(msg, 15, "[%d]", count);
        display_clear(&display);
        display_write_message(&display, msg);
        _delay_ms(1000);

        count++;
    }

    return 0;
}