devices/uart.h


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#pragma once

#ifdef __ARCH__
#include <stdio.h>
#include <sys/io.h>

#else
// from stdio
typedef struct FILE {
  int id;
  void (*putc)(const struct FILE *, char);
  int (*puts)(const struct FILE *, const char *, int);
  void (*flush)(const struct FILE *);
} FILE;

// from sys/io
unsigned char inb(unsigned short);
void outb(unsigned char, unsigned short);

enum UART {
  COM1 = 0x3f8,
  COM2 = 0x2f8,
  COM3 = 0x3e8,
  COM4 = 0x2e8,
  COM5 = 0x5f8,
  COM6 = 0x4f8,
  COM7 = 0x5e8,
  COM8 = 0x4e8,
};
#endif

FILE *uart_init(unsigned short port);