#pragma once

#include "stdint.h"
#include "stddef.h"

#define UART_COM1_PORT 0x3F8
#define UART_COM2_PORT 0x2F8

#ifdef __cplusplus
extern "C" {
#endif

/* Initialize 16550 UART port with target baud rate */
int uart_init(uint16_t port, uint32_t baud);

/* Check if transmit buffer is empty */
int uart_is_tx_empty(uint16_t port);

/* Transmit a single character */
void uart_putc(uint16_t port, char c);

/* Transmit a null-terminated string */
void uart_puts(uint16_t port, const char *s);

/* Transmit a buffer of given length */
void uart_write(uint16_t port, const char *buf, size_t len);

/* Check if data received */
int uart_has_data(uint16_t port);

/* Read a single character (blocking) */
char uart_getc(uint16_t port);

#ifdef __cplusplus
}
#endif