diff --git a/examples/protocols/asio/chat_client/asio_chat_client_test.py b/examples/protocols/asio/chat_client/asio_chat_client_test.py
index 4325806a3..d59b459c7 100644
--- a/examples/protocols/asio/chat_client/asio_chat_client_test.py
+++ b/examples/protocols/asio/chat_client/asio_chat_client_test.py
@@ -1,22 +1,10 @@
 import re
 import os
-import sys
 import socket
 from threading import Thread
 import time
 
-try:
-    import IDF
-    from IDF.IDFDUT import ESP32DUT
-except ImportError:
-    # this is a test case write with tiny-test-fw.
-    # to run test cases outside tiny-test-fw,
-    # we need to set environment variable `TEST_FW_PATH`,
-    # then get and insert `TEST_FW_PATH` to sys path before import FW module
-    test_fw_path = os.getenv("TEST_FW_PATH")
-    if test_fw_path and test_fw_path not in sys.path:
-        sys.path.insert(0, test_fw_path)
-    import IDF
+import ttfw_idf
 
 global g_client_response
 global g_msg_to_client
@@ -56,7 +44,7 @@ def chat_server_sketch(my_ip):
     print("server closed")
 
 
-@IDF.idf_example_test(env_tag="Example_WIFI")
+@ttfw_idf.idf_example_test(env_tag="Example_WIFI")
 def test_examples_protocol_asio_chat_client(env, extra_data):
     """
     steps: |
@@ -70,12 +58,12 @@ def test_examples_protocol_asio_chat_client(env, extra_data):
     global g_client_response
     global g_msg_to_client
     test_msg = "ABC"
-    dut1 = env.get_dut("chat_client", "examples/protocols/asio/chat_client", dut_class=ESP32DUT)
+    dut1 = env.get_dut("chat_client", "examples/protocols/asio/chat_client", dut_class=ttfw_idf.ESP32DUT)
     # check and log bin size
     binary_file = os.path.join(dut1.app.binary_path, "asio_chat_client.bin")
     bin_size = os.path.getsize(binary_file)
-    IDF.log_performance("asio_chat_client_size", "{}KB".format(bin_size // 1024))
-    IDF.check_performance("asio_chat_client_size", bin_size // 1024)
+    ttfw_idf.log_performance("asio_chat_client_size", "{}KB".format(bin_size // 1024))
+    ttfw_idf.check_performance("asio_chat_client_size", bin_size // 1024)
     # 1. start a tcp server on the host
     host_ip = get_my_ip()
     thread1 = Thread(target=chat_server_sketch, args=(host_ip,))
diff --git a/examples/protocols/asio/chat_server/asio_chat_server_test.py b/examples/protocols/asio/chat_server/asio_chat_server_test.py
index ccdd4a557..2bfa026fc 100644
--- a/examples/protocols/asio/chat_server/asio_chat_server_test.py
+++ b/examples/protocols/asio/chat_server/asio_chat_server_test.py
@@ -1,24 +1,11 @@
 import re
 import os
-import sys
 import socket
 
-
-try:
-    import IDF
-    from IDF.IDFDUT import ESP32DUT
-except ImportError:
-    # this is a test case write with tiny-test-fw.
-    # to run test cases outside tiny-test-fw,
-    # we need to set environment variable `TEST_FW_PATH`,
-    # then get and insert `TEST_FW_PATH` to sys path before import FW module
-    test_fw_path = os.getenv("TEST_FW_PATH")
-    if test_fw_path and test_fw_path not in sys.path:
-        sys.path.insert(0, test_fw_path)
-    import IDF
+import ttfw_idf
 
 
-@IDF.idf_example_test(env_tag="Example_WIFI")
+@ttfw_idf.idf_example_test(env_tag="Example_WIFI")
 def test_examples_protocol_asio_chat_server(env, extra_data):
     """
     steps: |
@@ -28,12 +15,12 @@ def test_examples_protocol_asio_chat_server(env, extra_data):
       4. Test evaluates received test message from server
     """
     test_msg = b"   4ABC\n"
-    dut1 = env.get_dut("chat_server", "examples/protocols/asio/chat_server", dut_class=ESP32DUT)
+    dut1 = env.get_dut("chat_server", "examples/protocols/asio/chat_server", dut_class=ttfw_idf.ESP32DUT)
     # check and log bin size
     binary_file = os.path.join(dut1.app.binary_path, "asio_chat_server.bin")
     bin_size = os.path.getsize(binary_file)
-    IDF.log_performance("asio_chat_server_bin_size", "{}KB".format(bin_size // 1024))
-    IDF.check_performance("asio_chat_server_size", bin_size // 1024)
+    ttfw_idf.log_performance("asio_chat_server_bin_size", "{}KB".format(bin_size // 1024))
+    ttfw_idf.check_performance("asio_chat_server_size", bin_size // 1024)
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address
diff --git a/examples/protocols/asio/tcp_echo_server/asio_tcp_server_test.py b/examples/protocols/asio/tcp_echo_server/asio_tcp_server_test.py
index d5ee5cf07..b7dc16817 100644
--- a/examples/protocols/asio/tcp_echo_server/asio_tcp_server_test.py
+++ b/examples/protocols/asio/tcp_echo_server/asio_tcp_server_test.py
@@ -1,25 +1,11 @@
 import re
 import os
-import sys
 import socket
 
-
-try:
-    import IDF
-    from IDF.IDFDUT import ESP32DUT
-except ImportError:
-    # this is a test case write with tiny-test-fw.
-    # to run test cases outside tiny-test-fw,
-    # we need to set environment variable `TEST_FW_PATH`,
-    # then get and insert `TEST_FW_PATH` to sys path before import FW module
-    test_fw_path = os.getenv("TEST_FW_PATH")
-    if test_fw_path and test_fw_path not in sys.path:
-        sys.path.insert(0, test_fw_path)
-
-    import IDF
+import ttfw_idf
 
 
-@IDF.idf_example_test(env_tag="Example_WIFI")
+@ttfw_idf.idf_example_test(env_tag="Example_WIFI")
 def test_examples_protocol_asio_tcp_server(env, extra_data):
     """
     steps: |
@@ -30,12 +16,12 @@ def test_examples_protocol_asio_tcp_server(env, extra_data):
       5. Test evaluates received test message on server stdout
     """
     test_msg = b"echo message from client to server"
-    dut1 = env.get_dut("tcp_echo_server", "examples/protocols/asio/tcp_echo_server", dut_class=ESP32DUT)
+    dut1 = env.get_dut("tcp_echo_server", "examples/protocols/asio/tcp_echo_server", dut_class=ttfw_idf.ESP32DUT)
     # check and log bin size
     binary_file = os.path.join(dut1.app.binary_path, "asio_tcp_echo_server.bin")
     bin_size = os.path.getsize(binary_file)
-    IDF.log_performance("asio_tcp_echo_server_bin_size", "{}KB".format(bin_size // 1024))
-    IDF.check_performance("asio_tcp_echo_server_size", bin_size // 1024)
+    ttfw_idf.log_performance("asio_tcp_echo_server_bin_size", "{}KB".format(bin_size // 1024))
+    ttfw_idf.check_performance("asio_tcp_echo_server_size", bin_size // 1024)
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address
diff --git a/examples/protocols/asio/udp_echo_server/asio_udp_server_test.py b/examples/protocols/asio/udp_echo_server/asio_udp_server_test.py
index 726a39f4f..3b6d0bff9 100644
--- a/examples/protocols/asio/udp_echo_server/asio_udp_server_test.py
+++ b/examples/protocols/asio/udp_echo_server/asio_udp_server_test.py
@@ -1,25 +1,11 @@
 import re
 import os
-import sys
 import socket
 
-
-try:
-    import IDF
-    from IDF.IDFDUT import ESP32DUT
-except ImportError:
-    # this is a test case write with tiny-test-fw.
-    # to run test cases outside tiny-test-fw,
-    # we need to set environment variable `TEST_FW_PATH`,
-    # then get and insert `TEST_FW_PATH` to sys path before import FW module
-    test_fw_path = os.getenv("TEST_FW_PATH")
-    if test_fw_path and test_fw_path not in sys.path:
-        sys.path.insert(0, test_fw_path)
-
-    import IDF
+import ttfw_idf
 
 
-@IDF.idf_example_test(env_tag="Example_WIFI")
+@ttfw_idf.idf_example_test(env_tag="Example_WIFI")
 def test_examples_protocol_asio_udp_server(env, extra_data):
     """
     steps: |
@@ -30,12 +16,12 @@ def test_examples_protocol_asio_udp_server(env, extra_data):
       5. Test evaluates received test message on server stdout
     """
     test_msg = b"echo message from client to server"
-    dut1 = env.get_dut("udp_echo_server", "examples/protocols/asio/udp_echo_server", dut_class=ESP32DUT)
+    dut1 = env.get_dut("udp_echo_server", "examples/protocols/asio/udp_echo_server", dut_class=ttfw_idf.ESP32DUT)
     # check and log bin size
     binary_file = os.path.join(dut1.app.binary_path, "asio_udp_echo_server.bin")
     bin_size = os.path.getsize(binary_file)
-    IDF.log_performance("asio_udp_echo_server_bin_size", "{}KB".format(bin_size // 1024))
-    IDF.check_performance("asio_udp_echo_server_size", bin_size // 1024)
+    ttfw_idf.log_performance("asio_udp_echo_server_bin_size", "{}KB".format(bin_size // 1024))
+    ttfw_idf.check_performance("asio_udp_echo_server_size", bin_size // 1024)
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address