avr/lcd/main.c

#include <avr/io.h>
#include <util/delay.h>
#include <base.h>
#include <spi.h>
#include <shift_register.h>
#include <display.h>

int main(void) {
    display_t display = {
        .reg = {
            .output         = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 5 },
            .latch_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 6 },
            .shift_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 7 },
        },
        .register_select    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 1 },
        .enable             = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 0 },
    };

    gpio_t light = { .ddr = &DDRC, .port = &PORTC, .pin = &PINC, .addr = 7 };
    set_line_direction(&light, LINE_OUT);
    clear_line(&light);

    display_init(&display);

    display_clear(&display);
    _delay_ms(500);

    const char msg[] = "Hello, my bat";
    display_write_message(&display, msg);
    display_enable(&display);

    set_line(&light);

    while(1) { _delay_ms(1); }
}