2 files changed, 18 insertions, 13 deletions
diff --git a/driver/serial.c b/driver/serial.c
index f402d0c..1a36bf5 100644
--- a/driver/serial.c
+++ b/driver/serial.c
@@ -1,9 +1,7 @@
 #define FOOLOS_MODULE_NAME "serial"
-// https://wiki.osdev.org/Serial_Ports
+#include "serial.h"
 
 #define PORT 0x3f8   /* COM1 */
- 
-#include "lib/logger/log.h"
 
 void serial_init() {
 
@@ -15,7 +13,7 @@ void serial_init() {
    x86_outb(PORT + 2, 0xC7);    // Enable FIFO, clear them, with 14-byte threshold
    x86_outb(PORT + 4, 0x0B);    // IRQs enabled, RTS/DSR set
 
-   log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"COM 1 - initialized");
+//   log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"COM 1 - initialized");
 }
 
 int serial_received() {
diff --git a/driver/serial.h b/driver/serial.h
index 2f287e6..2e10af8 100644
--- a/driver/serial.h
+++ b/driver/serial.h
@@ -1,11 +1,18 @@
-void serial_init() 
+/**
+ * @file
+ * Serial Port Driver for COM1
+ *
+ * https://wiki.osdev.org/Serial_Ports
+ *
+ * Call serial_init() once before reading and writing with serial_read()
+ * and serial_write(). Note that reading and writing might block.
+ */
 
-char serial_read() {
-int is_transmit_empty() {
-   return x86_inb(PORT + 5) & 0x20;
-}
+/** Initialize COM1 **/
+void serial_init();
+
+/** read one byte from COM1 (blocking) **/
+char serial_read();
  
-void serial_write(char a) {
-   while (is_transmit_empty() == 0);
-   x86_outb(PORT,a);
-}
+/** write one byte from COM1 (blocking) **/
+void serial_write(char a);