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Diffstat (limited to 'src/kernel/arch/i386/tty/serial.c')
| -rw-r--r-- | src/kernel/arch/i386/tty/serial.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/kernel/arch/i386/tty/serial.c b/src/kernel/arch/i386/tty/serial.c index 6ddc05b..2b89ecf 100644 --- a/src/kernel/arch/i386/tty/serial.c +++ b/src/kernel/arch/i386/tty/serial.c @@ -35,6 +35,11 @@ static void serial_putchar(char c) { port_outb(COM1, c); } +char serial_read(void) { + while ((port_inb(COM1 + 5) & 0x01) == 0); // wait for DR + return port_inb(COM1); +} + void serial_write(const char *buf, size_t len) { for (size_t i = 0; i < len; i++) serial_putchar(buf[i]); |