diff --git a/01_git/Makefile b/01_git/Makefile
new file mode 100644
index 0000000..000a715
--- /dev/null
+++ b/01_git/Makefile
@@ -0,0 +1,28 @@
+NAME = scissors
+
+SRC = scissors.c
+
+CFLAGS = -Wall -Wextra -Werror
+
+OBJ_DIR = obj
+OBJ = $(addprefix $(OBJ_DIR)/,$(SRC:.c=.o))
+
+.PHONY = all clean re
+
+all: $(OBJ_DIR) $(NAME)
+
+$(NAME): $(OBJ)
+	gcc $(CFLAGS) $^ -o $(NAME)
+
+$(addprefix $(OBJ_DIR),/%.o): %.c
+	gcc $(CFLAGS) $(DDFLAGS) -c $^ -o $@
+
+clean:
+	rm -rf $(OBJ_DIR) $(NAME)
+
+re:
+	make clean
+	make all
+
+$(OBJ_DIR):
+	mkdir -p $@
\ No newline at end of file
diff --git a/01_git/scissors.c b/01_git/scissors.c
new file mode 100644
index 0000000..130c5b7
--- /dev/null
+++ b/01_git/scissors.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main()
+{
+  char com;
+  int r;
+  
+  srand(time(NULL));
+  
+  printf("Please choose: rock (r) - paper (p) - scissors (s)");
+  com = getchar();
+  r = rand()%3;
+  
+  if (com == 'r') printf("You choose rock, I choose " );
+  if (com == 'p') printf("You choose paper, I choose " );
+  if (com == 's') printf("You choose scissors, I choose ");
+  
+  if (r  == 0) printf("rock.\n" );
+  if (r  == 1) printf("paper.\n" );
+  if (r  == 2) printf("scissors.\n");
+  
+  if (com == 'r' &&  r  == 0) printf ("Draw game.\n" );
+  if (com == 'p' &&  r  == 1) printf ("Draw game.\n" );
+  if (com == 's' &&  r  == 2) printf ("Draw game.\n" );
+  
+  if (com == 'r' &&  r  == 1) printf ("I win: paper beats rock.\n" );
+  if (com == 'p' &&  r  == 2) printf ("I win: scissors beats paper.\n" );
+  if (com == 's' &&  r  == 0) printf ("I win: rock beats scissors.\n" );
+  
+  if (com == 'r' &&  r  == 2) printf ("You win: rock beats scissors.\n" );
+  if (com == 'p' &&  r  == 0) printf ("You win: paper beats rock.\n" );
+  if (com == 's' &&  r  == 1) printf ("You win: scissors beats paper.\n" );
+  
+  getchar();
+  return 0;
+}
diff --git a/02_bash/devices.txt b/02_bash/devices.txt
new file mode 100644
index 0000000..a79f4e9
--- /dev/null
+++ b/02_bash/devices.txt
@@ -0,0 +1,22 @@
+
+ttyUSB :{
+
+}
+mmcblk :{
+
+}
+i2c :{
+i2c-0
+i2c-1
+i2c-2
+i2c-3
+i2c-4
+i2c-5
+
+}
+sd :{
+sda
+sda1
+sda2
+
+}
\ No newline at end of file
diff --git a/02_bash/hwdetech.sh b/02_bash/hwdetech.sh
new file mode 100755
index 0000000..9c1b0cf
--- /dev/null
+++ b/02_bash/hwdetech.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+
+USB_UART="ttyUSB"
+MMCBLK="mmcblk"
+I2C="i2c"
+SD="sd"
+
+check_device()
+{
+    printf "\n$1 :{\n" >> devices.txt
+    ls /dev/ | grep $1 >> devices.txt
+    printf "\n}">> devices.txt
+}
+
+
+touch devices.txt
+touch tmp_devices.txt
+
+while [ 1 ]
+do
+    rm devices.txt
+    touch devices.txt
+    check_device $USB_UART
+    check_device $MMCBLK
+    check_device $I2C
+    check_device $SD
+    CHK_DVC=$(diff tmp_devices.txt devices.txt)
+
+    if [ "$CHK_DVC" != "" ]
+    then
+        cp devices.txt tmp_devices.txt
+	cat devices.txt
+    fi
+
+    sleep 1
+done
\ No newline at end of file
diff --git a/02_bash/tmp_devices.txt b/02_bash/tmp_devices.txt
new file mode 100644
index 0000000..a79f4e9
--- /dev/null
+++ b/02_bash/tmp_devices.txt
@@ -0,0 +1,22 @@
+
+ttyUSB :{
+
+}
+mmcblk :{
+
+}
+i2c :{
+i2c-0
+i2c-1
+i2c-2
+i2c-3
+i2c-4
+i2c-5
+
+}
+sd :{
+sda
+sda1
+sda2
+
+}
\ No newline at end of file
diff --git a/03_module/README.md b/03_module/README.md
new file mode 100644
index 0000000..db39346
--- /dev/null
+++ b/03_module/README.md
@@ -0,0 +1,16 @@
+module home work: create a simple loadable module with parameters
+
+Create a loadadle kernel module which should accept two integer parameters and provide:
+
+    A sum of parameters upon driver load
+    A substration of parameters upon driver unload
+
+Info about module parameters can be found at: https://devarea.com/linux-kernel-development-kernel-module-parameters/#.YZfWcpFByV4
+
+Task should be performed using buildroot+qemu approach
+
+The task results should contain:
+
+    The module code
+    The Makefile
+    Dump of the kernel logs from the target system
diff --git a/03_module/my_modul/Makefile b/03_module/my_modul/Makefile
new file mode 100644
index 0000000..cfaf21f
--- /dev/null
+++ b/03_module/my_modul/Makefile
@@ -0,0 +1,16 @@
+#KERNELDIR ?= ~/soft/buildroot-2021.11-rc2/output/build/linux-5.15/
+#KERNELDIR ?= ~/soft/buildroot-2021.02/output/build/linux-5.10.10/
+# KERNELDIR ?= ~/soft/buildroot-2021.02/output/host/bin/
+# KERNELDIR ?= ~/soft/buildroot-2021.11-rc2/output_oranj/build/linux-5.12.2/
+
+KERNELDIR ?= ~/soft/buildroot-2021.02/temp_imeg/build/linux-5.10.10/
+ifneq ($(KERNELRELEASE),)
+  obj-m := modul_add.o
+else
+
+all:
+	$(MAKE) CFLAGS_MODULE="-DDEBUG -DORANGE_PI_ZERO" -C $(KERNELDIR) M=$(PWD) modules
+clean:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
+endif
+
diff --git a/03_module/my_modul/Makefile_old b/03_module/my_modul/Makefile_old
new file mode 100644
index 0000000..0ba6634
--- /dev/null
+++ b/03_module/my_modul/Makefile_old
@@ -0,0 +1,15 @@
+ifneq ($(KERNELRELEASE),)
+# kbuild part of makefile
+obj-m   := modul_add.o
+else
+# normal makefile
+KDIR ?= /lib/modules/`uname -r`/build
+
+default:
+	$(MAKE) -C $(KDIR) M=$$PWD
+move:
+	cd ../ && sudo cp -r 03_module /srv/nfs/busybox/tmp/
+clean:
+	$(MAKE) -C $(KDIR) M=$$PWD clean
+endif
+
diff --git a/03_module/my_modul/kernel-log.sh b/03_module/my_modul/kernel-log.sh
new file mode 100755
index 0000000..90cdae0
--- /dev/null
+++ b/03_module/my_modul/kernel-log.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+# Simple script for generating logs for kernel module
+# with different parameters
+
+echo '[Hello it`s test for first Kernel module]'
+echo ' '
+echo '[With parameters]'
+sleep 0.1s
+insmod modul_add.ko znach_1=122  znach_2=133
+rmmod modul_add.ko
+
+echo ' '
+echo '[With one parameters]'
+sleep 0.1s 
+insmod modul_add.ko znach_1=-10    
+rmmod modul_add.ko
+
+echo ' '
+echo '[Without parameters]'
+sleep 0.1s
+insmod modul_add.ko
+rmmod modul_add.ko
diff --git a/03_module/my_modul/log_mod.txt b/03_module/my_modul/log_mod.txt
new file mode 100644
index 0000000..74e7bb8
--- /dev/null
+++ b/03_module/my_modul/log_mod.txt
@@ -0,0 +1,17 @@
+[Hello it`s test for first Kernel module]
+ 
+[With parameters]
+ 
+[With one parameters]
+ 
+[Without parameters]
+
+dmesg | grep 'znach'
+
+[ 3230.039347] znach_1 + znach_2 = 255
+[ 3230.042907] znach_1 - znach_2 = -11
+[ 3230.164680] znach_1 + znach_2 = 0
+[ 3230.168207] znach_1 - znach_2 = -20
+[ 3230.302357] znach_1 + znach_2 = 15
+[ 3230.305929] znach_1 - znach_2 = -5
+
diff --git a/03_module/my_modul/modul_add.c b/03_module/my_modul/modul_add.c
new file mode 100644
index 0000000..cf2bed7
--- /dev/null
+++ b/03_module/my_modul/modul_add.c
@@ -0,0 +1,27 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+static int znach_1 = 5;
+static int znach_2 = 10;
+
+module_param(znach_1, int, S_IRUSR | S_IRGRP);
+MODULE_PARM_DESC(znach_1, "the first module's parameter");
+module_param(znach_2, int, S_IRUSR | S_IRGRP);
+MODULE_PARM_DESC(znach_2, "the second module's parameter");
+
+int init_module(void)
+{
+	printk(KERN_INFO "znach_1 + znach_2 = %d\n", znach_1 + znach_2);
+    
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	printk(KERN_INFO "znach_1 - znach_2 = %d\n", znach_1 - znach_2);
+}
+
+MODULE_DESCRIPTION("My simple kernel module");
+MODULE_AUTHOR("Valentin S.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1");
\ No newline at end of file
diff --git a/04_basic_srtuct/Log_basic_struct.txt b/04_basic_srtuct/Log_basic_struct.txt
new file mode 100644
index 0000000..39d3592
--- /dev/null
+++ b/04_basic_srtuct/Log_basic_struct.txt
@@ -0,0 +1,17 @@
+# insmod basic_struct.ko 
+# echo "123456" > /sys/kernel/basic_struct/list
+# at /sys/kernel/basic_struct/list
+-sh: at: not found
+# cat /sys/kernel/basic_struct/list
+123456
+# echo "Hello world 1" > /sys/kernel/basic_struct/list
+# cat /sys/kernel/basic_struct/list
+123456
+Hello world 1
+# echo "Hello world 2" > /sys/kernel/basic_struct/list
+# echo "Hello world 3" > /sys/kernel/basic_struct/list
+# cat /sys/kernel/basic_struct/list
+123456
+Hello world 1
+Hello world 2
+Hello world 3
diff --git a/04_basic_srtuct/Makefile b/04_basic_srtuct/Makefile
new file mode 100644
index 0000000..f984981
--- /dev/null
+++ b/04_basic_srtuct/Makefile
@@ -0,0 +1,11 @@
+#KERNELDIR ?= ~/Development/Embedded/exercise8/buildroot_qemu_x64_image/build/linux-5.10.7/
+KERNELDIR ?= ~/soft/buildroot-2021.11-rc2/output/build/linux-5.15/
+CFLAGS_basic_struct.o := -DDEBUG
+obj-m += basic_struct.o
+
+all:
+	make -C $(KERNELDIR) M=$(PWD) modules
+clean:
+	make -C $(KERNELDIR) M=$(PWD) clean
+test:
+	sh test_S_mod.sh
\ No newline at end of file
diff --git a/04_basic_srtuct/README.md b/04_basic_srtuct/README.md
new file mode 100644
index 0000000..24b5bc4
--- /dev/null
+++ b/04_basic_srtuct/README.md
@@ -0,0 +1,8 @@
+Basic structure homework
+
+Implement object with name “MyObject” which is parent of kernel_kobj.
+Object should include linked_list structure.
+This object should contain sysfs attribute with name “list”.
+On read form attribute “list” it should show content of the objects linked list.
+On write to attribute “list” it should add new string to the objects linked list.
+!! Do not forget properly free all the resources during rmmod.
\ No newline at end of file
diff --git a/04_basic_srtuct/basic_struct.c b/04_basic_srtuct/basic_struct.c
new file mode 100644
index 0000000..5719308
--- /dev/null
+++ b/04_basic_srtuct/basic_struct.c
@@ -0,0 +1,129 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kobject.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/types.h>
+
+// Useful link:
+// https://elixir.bootlin.com/linux/latest/source/samples/kobject/kobject-example.c#L131
+
+typedef struct string_list_item{
+    struct list_head list;
+    char* stored_string;
+    size_t stored_string_length;
+}string_list_item_t;
+
+
+static struct kobject *list_obj;
+static struct list_head string_list;
+
+static ssize_t add_new_string_entity(const char* buffer)
+{
+    string_list_item_t* p_entity = kmalloc(sizeof(string_list_item_t),GFP_KERNEL);
+    if(!p_entity)
+        return -ENOMEM;
+    
+    const size_t string_length = strlen(buffer);
+    const size_t string_buffer_mem_size = string_length+1;
+    char* string_buffer = kmalloc(string_buffer_mem_size, GFP_KERNEL);
+    if(!string_buffer){
+        kfree(p_entity);
+        return -ENOMEM;
+    }
+    p_entity->stored_string = string_buffer;
+
+    strncpy(string_buffer,buffer,string_buffer_mem_size);
+    p_entity->stored_string_length = string_length;
+
+    list_add_tail(&p_entity->list,&string_list);
+
+    return string_length;
+}
+
+static void string_item_dtor(string_list_item_t* string_list_item){
+    if(!string_list_item)
+        return;
+
+    kfree(string_list_item->stored_string);
+    string_list_item->stored_string = NULL;
+    string_list_item->stored_string_length = 0;
+    kfree(string_list_item);
+}
+static void cleanup_storage(void)
+{
+    string_list_item_t* string_it = NULL;
+    struct list_head* pos, *q;
+    list_for_each_safe(pos,q,&string_list)
+    {
+        string_it = list_entry(pos,string_list_item_t,list);
+        list_del(pos);
+        string_item_dtor(string_it);
+    }
+
+}
+static ssize_t  list_show(struct kobject *kobj, 
+                        struct kobj_attribute *attr, char *buf)
+{
+    char* buffer_pointer = buf;
+    ssize_t pointer_offset = 0;
+    string_list_item_t* list_entity_it = NULL;
+    list_for_each_entry(list_entity_it,&string_list,list)
+    {
+        size_t copied_data_size = list_entity_it->stored_string_length+1;
+        ssize_t copy_result = sprintf(buffer_pointer+ pointer_offset,"%s", list_entity_it->stored_string);
+        pointer_offset += copy_result;
+    }
+    pr_debug("==BASIC_STRUCT==:Called list_show with copied pointer_offset:%ld\n", pointer_offset);
+    return pointer_offset;
+}
+
+static ssize_t  list_store(struct kobject *kobj, 
+                        struct kobj_attribute *attr,const char *buf, size_t count)
+{
+    pr_debug("==BASIC_STRUCT==:Called list_store with count:%d\n", count);
+    ssize_t res = add_new_string_entity(buf);
+    if(!res)
+        return -EFAULT;
+    return count;
+}
+
+
+struct kobj_attribute list_attribute = __ATTR(list, 0660, list_show, list_store);
+
+static int __init simple_struct_module_init(void)
+{
+    int result = 0;
+    list_obj = kobject_create_and_add("basic_struct", kernel_kobj);
+    if (!list_obj){
+        pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__,
+			__LINE__);
+		return -ENOMEM;
+    }
+    result = sysfs_create_file(list_obj, &list_attribute.attr);
+    if(result){
+        pr_warn("%s:%d: sysfs_create_file failed.\n", __func__,
+			__LINE__);
+        kobject_put(list_obj);
+        return -ENOMEM;
+    }
+    INIT_LIST_HEAD(&string_list);
+
+    pr_debug("==BASIC_STRUCT==:Module ready\n");
+    return result;
+}
+
+
+static void __exit simple_struct_module_exit(void)
+{
+    cleanup_storage();
+
+    kobject_put(list_obj);
+    pr_debug("==BASIC_STRUCT==:Module unloaded\n");
+}
+
+module_init(simple_struct_module_init);
+module_exit(simple_struct_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Valentyn Sidorov");
\ No newline at end of file
diff --git a/04_basic_srtuct/basic_struct.ko b/04_basic_srtuct/basic_struct.ko
new file mode 100644
index 0000000..2d39d44
Binary files /dev/null and b/04_basic_srtuct/basic_struct.ko differ
diff --git a/04_basic_srtuct/test_S_mod.sh b/04_basic_srtuct/test_S_mod.sh
new file mode 100755
index 0000000..8a8f773
--- /dev/null
+++ b/04_basic_srtuct/test_S_mod.sh
@@ -0,0 +1,9 @@
+dmesg -c
+	insmod basic_struct.ko
+	echo "123456" > /sys/kernel/basic_struct/list
+	cat /sys/kernel/basic_struct/list
+	echo "1234567890263321564654654654679874964321356" > /sys/kernel/basic_struct/list
+	echo "Hello world!" > /sys/kernel/basic_struct/list
+	cat /sys/kernel/basic_struct/list
+	rmmod basic_struct.ko
+	dmesg
\ No newline at end of file
diff --git a/05_timers/README.md b/05_timers/README.md
new file mode 100644
index 0000000..55b41f2
--- /dev/null
+++ b/05_timers/README.md
@@ -0,0 +1,10 @@
+## Homework: Linux Kernel Time Management
+
+1. Implement program which return absolute time in user space.
+Use clock_gettime() from time.h. Try different clock id.
+Find the difference. Show possible clock resolution provided by clock_getres().
+
+2. Implement kernel module with API in sysfs, which returns relative
+time in maximum possible resolution passed since previous read of it.
+Implement kernel module with API in sysfs which returns absolute time
+of previous reading with maximum resolution like ‘400.123567’ seconds.
diff --git a/05_timers/kernel_module/Makefile b/05_timers/kernel_module/Makefile
new file mode 100644
index 0000000..167605a
--- /dev/null
+++ b/05_timers/kernel_module/Makefile
@@ -0,0 +1,10 @@
+
+#KERNELDIR ?= ~/soft/buildroot-2021.02/output/build/linux-5.10.10/
+KERNELDIR ?= ~/soft/buildroot-2021.11-rc2/output/build/linux-5.15
+obj-m := time_attr_presenter.o
+
+all:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
+
+clean:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
diff --git a/05_timers/kernel_module/dump.txt b/05_timers/kernel_module/dump.txt
new file mode 100644
index 0000000..bb7d3f0
--- /dev/null
+++ b/05_timers/kernel_module/dump.txt
@@ -0,0 +1,25 @@
+# insmod /tmp/time_attr_presenter.ko 
+# cat /sys/kernel/time_attr_presenter/last_abs_time  
+-1
+# cat /sys/kernel/time_attr_presenter/last_abs_time  
+1639337982.183260522
+# cat /sys/kernel/time_attr_presenter/last_abs_time  
+1639337984.166915503
+# cat /sys/kernel/time_attr_presenter/last_relative_time 
+-1
+# cat /sys/kernel/time_attr_presenter/last_relative_time 
+0.636000000
+# cat /sys/kernel/time_attr_presenter/last_relative_time 
+1.812000000
+# cat /sys/kernel/time_attr_presenter/last_relative_time 
+0.752000000
+# rmmod time_attr_presenter.ko
+time_attr_presenter: Module exited
+# ls /sys/kernel/time_attr_presenter
+ls: /sys/kernel/time_attr_presenter: No such file or directory
+
+# unix timestamps are matched with real time
+date -d @1639337984.166915503
+неділя, 12 грудня 2021 21:39:44 +0200
+date -d @1639337982.183260522
+неділя, 12 грудня 2021 21:39:42 +0200
diff --git a/05_timers/kernel_module/time_attr_presenter.c b/05_timers/kernel_module/time_attr_presenter.c
new file mode 100644
index 0000000..861995a
--- /dev/null
+++ b/05_timers/kernel_module/time_attr_presenter.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 1 Implement kernel module with API in sysfs,
+ *   which returns relative time in maximum possible
+ *   resolution passed since previous read of it.
+ * 2 Implement kernel module with API in sysfs
+ *   which returns absolute time of previous reading
+ *   with maximum resolution like ‘400.123567’ seconds.
+ */
+
+
+#define DEBUG
+#define pr_fmt(fmt) "%s: " fmt,  KBUILD_MODNAME
+#include <linux/module.h>
+#include <linux/kobject.h>
+#include <linux/err.h>
+#include <linux/sysfs.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/time.h>
+#include <linux/timekeeping.h>
+#include <linux/jiffies.h>
+
+
+static ssize_t time_attr_presenter_last_abs_time_show(struct kobject *kobj, struct kobj_attribute *attr, char *buff);
+static ssize_t time_attr_presenter_last_relative_time_show(struct kobject *kobj, struct kobj_attribute *attr, char *buff);
+static ssize_t time_attr_presenter_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buff, size_t count);
+static int time_attr_presenter_init(void);
+static void time_attr_presenter_exit(void);
+
+
+static struct kobject *time_attr_presenter_kobj;
+static u64 last_read_jiffies;
+static struct timespec64 last_read_time;
+
+static struct kobj_attribute param_abs_attribute =
+		__ATTR(last_abs_time, 0644, time_attr_presenter_last_abs_time_show, time_attr_presenter_store);
+static struct kobj_attribute param_relative_attribute =
+		__ATTR(last_relative_time, 0644, time_attr_presenter_last_relative_time_show, time_attr_presenter_store);
+
+
+static ssize_t time_attr_presenter_last_abs_time_show(struct kobject *kobj, struct kobj_attribute *attr, char *buff)
+{
+	if (last_read_time.tv_sec == 0 && last_read_time.tv_nsec == 0)
+		sprintf(buff, "-1\n");
+	else
+		sprintf(buff, "%lli.%li\n", last_read_time.tv_sec, last_read_time.tv_nsec);
+
+	ktime_get_real_ts64(&last_read_time);
+
+	return strlen(buff);
+}
+
+static ssize_t time_attr_presenter_last_relative_time_show(struct kobject *kobj, struct kobj_attribute *attr, char *buff)
+{
+	u64 delta = 0;
+	struct timespec64 ts;
+
+	if (last_read_jiffies == 0) {
+		sprintf(buff, "-1\n");
+	} else {
+		delta = get_jiffies_64() - last_read_jiffies;
+		jiffies_to_timespec64(delta, &ts);
+		sprintf(buff, "%lli.%li\n", ts.tv_sec, ts.tv_nsec);
+	}
+	last_read_jiffies = get_jiffies_64();
+
+	return strlen(buff);
+}
+
+
+static ssize_t time_attr_presenter_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buff, size_t count)
+{
+	return count;
+}
+
+
+static int time_attr_presenter_init(void)
+{
+	int res = 0;
+
+	time_attr_presenter_kobj = kobject_create_and_add("time_attr_presenter", kernel_kobj);
+	if (!time_attr_presenter_kobj)
+		return -ENOMEM;
+	res = sysfs_create_file(time_attr_presenter_kobj, &param_relative_attribute.attr);
+	if (res)
+		kobject_put(time_attr_presenter_kobj);
+	res = sysfs_create_file(time_attr_presenter_kobj, &param_abs_attribute.attr);
+	if (res)
+		kobject_put(time_attr_presenter_kobj);
+
+	last_read_jiffies = 0;
+	last_read_time.tv_sec = 0;
+	last_read_time.tv_nsec = 0;
+
+	return res;
+}
+
+
+static void time_attr_presenter_exit(void)
+{
+	kobject_put(time_attr_presenter_kobj);
+	pr_info("Module exited\n");
+}
+
+module_init(time_attr_presenter_init);
+module_exit(time_attr_presenter_exit);
+
+MODULE_AUTHOR("Valentin Sidorov <svv311077@gmail.com>");
+MODULE_DESCRIPTION("Time attribute presenter module");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1");
diff --git a/05_timers/user_space/Makefile b/05_timers/user_space/Makefile
new file mode 100644
index 0000000..4142923
--- /dev/null
+++ b/05_timers/user_space/Makefile
@@ -0,0 +1,11 @@
+CC=gcc
+CFLAGS=-I. -std=c99 -D_POSIX_C_SOURCE=199309L
+OUT_NAME=user-space-timers
+
+all: $(OUT_NAME)
+
+$(OUT_NAME): user_space_timers.c
+	$(CC) user_space_timers.c -o $(OUT_NAME) $(CFLAGS)
+
+clean:
+	/bin/rm -rf *.o a.out $(OUT_NAME)
diff --git a/05_timers/user_space/dump1.txt b/05_timers/user_space/dump1.txt
new file mode 100644
index 0000000..6618230
--- /dev/null
+++ b/05_timers/user_space/dump1.txt
@@ -0,0 +1,21 @@
+sidorov@rtx-sidorov:~/repositori/gl_kernel_procamp_2021/05_timers/user_space$ ./user_p1 
+getting clock resolution...
+----------------------------------------------------------------
+|clock_id            |sec                 |nsec                |
+----------------------------------------------------------------
+|CLOCK_REALTIME      |0                   |1                   |
+|CLOCK_MONOTONIC     |0                   |1                   |
+|CLOCK_PROCESS_CPUTIM|0                   |1                   |
+|CLOCK_THREAD_CPUTIME|0                   |1                   |
+|CLOCK_BOOTTIME      |0                   |1                   |
+
+getting actual clock values...
+----------------------------------------------------------------
+|clock_id            |sec                 |nsec                |
+----------------------------------------------------------------
+|CLOCK_REALTIME      |1639735722          |665435750           |
+|CLOCK_MONOTONIC     |104386              |898914652           |
+|CLOCK_PROCESS_CPUTIM|0                   |1823907             |
+|CLOCK_THREAD_CPUTIME|0                   |1827586             |
+|CLOCK_BOOTTIME      |951996              |454427458           |
+
diff --git a/05_timers/user_space/user_p1 b/05_timers/user_space/user_p1
new file mode 100755
index 0000000..6be4bf4
Binary files /dev/null and b/05_timers/user_space/user_p1 differ
diff --git a/05_timers/user_space/user_space_timers.c b/05_timers/user_space/user_space_timers.c
new file mode 100644
index 0000000..7f23a39
--- /dev/null
+++ b/05_timers/user_space/user_space_timers.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Implement program which return absolute time in user space.
+ * Use clock_gettime() from time.h. Try different clock id. Find the difference.
+ * Show possible clock resolution provided by clock_getres().
+ */
+
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+int main(void)
+{
+    struct timespec real_ts, mono_ts, pcpu_ts, tcpu_ts, boot_ts;
+    struct timespec real_tp, mono_tp, pcpu_tp, tcpu_tp, boot_tp;
+
+    printf("getting clock resolution...\n");
+    if (clock_getres(CLOCK_REALTIME, &real_ts))
+	perror(strerror(errno));
+    if (clock_getres(CLOCK_MONOTONIC, &mono_ts))
+	perror(strerror(errno));
+    if (clock_getres(CLOCK_PROCESS_CPUTIME_ID, &pcpu_ts))
+	perror(strerror(errno));
+    if (clock_getres(CLOCK_THREAD_CPUTIME_ID, &tcpu_ts))
+	perror(strerror(errno));
+    if (clock_getres(CLOCK_BOOTTIME, &boot_ts))
+	perror(strerror(errno));
+
+    printf("----------------------------------------------------------------\n");
+    printf("|%-20.20s|%-20.20s|%-20.20s|\n", "clock_id", "sec", "nsec");
+    printf("----------------------------------------------------------------\n");
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_REALTIME", real_ts.tv_sec, real_ts.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_MONOTONIC", mono_ts.tv_sec, mono_ts.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_PROCESS_CPUTIME_ID", pcpu_ts.tv_sec, pcpu_ts.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_THREAD_CPUTIME_ID", tcpu_ts.tv_sec, tcpu_ts.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_BOOTTIME", boot_ts.tv_sec, boot_ts.tv_nsec);
+    printf("\n");
+
+    printf("getting actual clock values...\n");
+    if (clock_gettime(CLOCK_REALTIME, &real_tp))
+	perror(strerror(errno));
+    if (clock_gettime(CLOCK_MONOTONIC, &mono_tp))
+	perror(strerror(errno));
+    if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &pcpu_tp))
+	perror(strerror(errno));
+    if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tcpu_tp))
+	perror(strerror(errno));
+    if (clock_gettime(CLOCK_BOOTTIME, &boot_tp))
+	perror(strerror(errno));
+
+    printf("----------------------------------------------------------------\n");
+    printf("|%-20.20s|%-20.20s|%-20.20s|\n", "clock_id", "sec", "nsec");
+    printf("----------------------------------------------------------------\n");
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_REALTIME", real_tp.tv_sec, real_tp.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_MONOTONIC", mono_tp.tv_sec, mono_tp.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_PROCESS_CPUTIME_ID", pcpu_tp.tv_sec, pcpu_tp.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_THREAD_CPUTIME_ID", tcpu_tp.tv_sec, tcpu_tp.tv_nsec);
+    printf("|%-20.20s|%-20li|%-20li|\n", "CLOCK_BOOTTIME", boot_tp.tv_sec, boot_tp.tv_nsec);
+    printf("\n");
+
+    return 0;
+}
diff --git a/setup_orange.sh b/setup_orange.sh
new file mode 100755
index 0000000..f4648a3
--- /dev/null
+++ b/setup_orange.sh
@@ -0,0 +1,6 @@
+#! /bin/bash
+export ARCH=arm
+export CROSS_COMPILE="arm-buildroot-linux-uclibcgnuebihf-"
+export PATH=$PATH:~/soft/buildroot-2021.11-rc2/output_oranj/host/bin
+export BUILD_KERNEL=~/soft/buildroot-2021.11-rc2/output_oranj/build/linux-5.12.2/
+export CURDIR=$(pwd)