M kernel/syscall.c → kernel/syscall.c

@@ -26,7 +26,8 @@ file_tell,
         time_get_ticks,
         mem_usage,
         sched_kill,
-        sched_sleep
+        sched_sleep,
+        time_now
     };
 
 extern void syscall_interrupt(void);

M kernel/time.c → kernel/time.c

@@ -1,4 +1,22 @@
 #include "time.h"
+#include "assembly.h"
+
+#define RTC_COMMAND  			0x70
+#define RTC_DATA 				0x71
+
+#define RTC_READY   			0x80
+
+#define RTC_REGISTER_A			0x0A
+#define RTC_REGISTER_B			0x0B
+#define RTC_REGISTER_C			0x0C
+
+#define RTC_GET_SECONDS			0x00
+#define RTC_GET_MINUTES			0x02
+#define RTC_GET_HOURS			0x04
+
+#define RTC_GET_DAY 			0x07
+#define RTC_GET_MONTH			0x08
+#define RTC_GET_YEAR			0x09
 
 int ticks = 0;
 
@@ -8,4 +26,26 @@ }
 
 int time_get_ticks(void) {
     return ticks;
+}
+
+static uint8_t rtc_get(uint8_t reg) {
+    outb(reg, RTC_COMMAND);
+    nop();
+    nop();
+    nop();
+    nop();
+    uint8_t res = inb(RTC_DATA);
+    return (res >> 4) * 10 + (res & 0x0F);
+}
+
+int time_now(datetime_t *buffer) {
+    buffer->year = 2000 + rtc_get(RTC_GET_YEAR);
+    buffer->month = rtc_get(RTC_GET_MONTH);
+    buffer->day = rtc_get(RTC_GET_DAY);
+
+    buffer->hour = rtc_get(RTC_GET_HOURS);
+    buffer->minute = rtc_get(RTC_GET_MINUTES);
+    buffer->second = rtc_get(RTC_GET_SECONDS);
+
+    return 0;
 }

M kernel/time.h → kernel/time.h

@@ -1,8 +1,20 @@
 #ifndef __TIME_H
 #define __TIME_H
 
+typedef struct {
+    int year;
+    int month;
+    int day;
+    
+    int hour;
+    int minute;
+    int second;
+} datetime_t;
+
 void time_tick(void);
 
 int time_get_ticks(void);
+
+int time_now(datetime_t *buffer);
 
 #endif

M libcedos/cedos.c → libcedos/cedos.c

@@ -105,3 +105,8 @@ void sleep(int ticks) {
     volatile uint32_t res = 0;
     interrupt(0x30, res, 15, ticks, 0, 0);
 }
+
+int time_now(datetime_t *buffer) {
+    volatile uint32_t res = 0;
+    interrupt(0x30, res, 16, buffer, 0, 0);
+}

M libcedos/cedos.h → libcedos/cedos.h

@@ -5,6 +5,16 @@ #include "assembly.h"
 
 #include <stdint.h>
 
+typedef struct {
+    int year;
+    int month;
+    int day;
+    
+    int hour;
+    int minute;
+    int second;
+} datetime_t;
+
 int sysprint(const char *fmt, int arg1, int arg2);
 int yield();
 void sleep(int ticks);
@@ -28,6 +38,8 @@ int dir_next(int fd, int index, char *fname_buffer);
 
 int sc_time_get_ticks(void);
 uint32_t sc_mem_usage(void);
+
+int time_now(datetime_t *buffer);
 
 
 #endif

A shell/date.c

@@ -0,0 +1,11 @@
+#include "cedos.h"
+#include "stdio.h"
+
+#include <stdint.h>
+
+void main(char *args) {
+    datetime_t now;
+    time_now(&now);
+    printf("%i-%i-%i %i:%i:%i\n", now.year, now.month, now.day, now.hour, now.minute, now.second);
+
+}