diff --git a/unit-testing/stm32cube/.gitignore b/unit-testing/stm32cube/.gitignore
new file mode 100644
index 0000000..5402c18
--- /dev/null
+++ b/unit-testing/stm32cube/.gitignore
@@ -0,0 +1,3 @@
+.pioenvs
+.clang_complete
+.gcc-flags.json
diff --git a/unit-testing/stm32cube/.travis.yml b/unit-testing/stm32cube/.travis.yml
new file mode 100644
index 0000000..593d7ef
--- /dev/null
+++ b/unit-testing/stm32cube/.travis.yml
@@ -0,0 +1,65 @@
+# Continuous Integration (CI) is the practice, in software
+# engineering, of merging all developer working copies with a shared mainline
+# several times a day < http://docs.platformio.org/page/ci/index.html >
+#
+# Documentation:
+#
+# * Travis CI Embedded Builds with PlatformIO
+#   < https://docs.travis-ci.com/user/integration/platformio/ >
+#
+# * PlatformIO integration with Travis CI
+#   < http://docs.platformio.org/page/ci/travis.html >
+#
+# * User Guide for `platformio ci` command
+#   < http://docs.platformio.org/page/userguide/cmd_ci.html >
+#
+#
+# Please choose one of the following templates (proposed below) and uncomment
+# it (remove "# " before each line) or use own configuration according to the
+# Travis CI documentation (see above).
+#
+
+
+#
+# Template #1: General project. Test it using existing `platformio.ini`.
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# install:
+#     - pip install -U platformio
+#
+# script:
+#     - platformio run
+
+
+#
+# Template #2: The project is intended to by used as a library with examples
+#
+
+# language: python
+# python:
+#     - "2.7"
+#
+# sudo: false
+# cache:
+#     directories:
+#         - "~/.platformio"
+#
+# env:
+#     - PLATFORMIO_CI_SRC=path/to/test/file.c
+#     - PLATFORMIO_CI_SRC=examples/file.ino
+#     - PLATFORMIO_CI_SRC=path/to/test/directory
+#
+# install:
+#     - pip install -U platformio
+#
+# script:
+#     - platformio ci --lib="." --board=ID_1 --board=ID_2 --board=ID_N
diff --git a/unit-testing/stm32cube/README.rst b/unit-testing/stm32cube/README.rst
new file mode 100644
index 0000000..4e56fe5
--- /dev/null
+++ b/unit-testing/stm32cube/README.rst
@@ -0,0 +1,30 @@
+..  Copyright 2014-present PlatformIO <contact@platformio.org>
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+How to build PlatformIO based project
+=====================================
+
+1. `Install PlatformIO Core <http://docs.platformio.org/page/core.html>`_
+2. Download `development platform with examples <https://github.com/platformio/platform-ststm32/archive/develop.zip>`_
+3. Extract ZIP archive
+4. Run these commands:
+
+.. code-block:: bash
+
+    # Change directory to example
+    > cd platformio-examples/unit-testing/stm32cube
+
+
+    # Test project
+    > platformio test
+
+    # Test specific environment
+    > platformio test -e nucleo_f401re
diff --git a/unit-testing/stm32cube/lib/readme.txt b/unit-testing/stm32cube/lib/readme.txt
new file mode 100644
index 0000000..4b6209e
--- /dev/null
+++ b/unit-testing/stm32cube/lib/readme.txt
@@ -0,0 +1,38 @@
+
+This directory is intended for the project specific (private) libraries.
+PlatformIO will compile them to static libraries and link to executable file.
+
+The source code of each library should be placed in separate directory, like
+"lib/private_lib/[here are source files]".
+
+For example, see how can be organized `Foo` and `Bar` libraries:
+
+|--lib
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |- readme.txt --> THIS FILE
+|- platformio.ini
+|--src
+   |- main.c
+
+Then in `src/main.c` you should use:
+
+#include <Foo.h>
+#include <Bar.h>
+
+// rest H/C/CPP code
+
+PlatformIO will find your libraries automatically, configure preprocessor's
+include paths and build them.
+
+See additional options for PlatformIO Library Dependency Finder `lib_*`:
+
+http://docs.platformio.org/page/projectconf.html#lib-install
+
diff --git a/unit-testing/stm32cube/platformio.ini b/unit-testing/stm32cube/platformio.ini
new file mode 100644
index 0000000..0ffa80d
--- /dev/null
+++ b/unit-testing/stm32cube/platformio.ini
@@ -0,0 +1,16 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter, extra scripting
+;   Upload options: custom port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;
+; Please visit documentation for the other options and examples
+; http://docs.platformio.org/page/projectconf.html
+
+
+
+[env:nucleo_f401re]
+platform = ststm32
+framework = stm32cube
+board = nucleo_f401re
+test_transport = custom
diff --git a/unit-testing/stm32cube/src/main.c b/unit-testing/stm32cube/src/main.c
new file mode 100644
index 0000000..aecde1a
--- /dev/null
+++ b/unit-testing/stm32cube/src/main.c
@@ -0,0 +1,74 @@
+#include "main.h"
+
+void LED_Init()
+{
+  LED_GPIO_CLK_ENABLE();
+  
+  GPIO_InitTypeDef GPIO_InitStruct;
+  
+  GPIO_InitStruct.Pin = LED_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+  HAL_GPIO_Init(LED_GPIO_PORT, &GPIO_InitStruct); 
+    
+}
+
+#ifndef UNIT_TEST
+int main(void)
+#else
+int app_main(void)
+#endif
+{
+  HAL_Init();
+  LED_Init();
+
+  while (1)
+  {
+    HAL_GPIO_TogglePin(LED_GPIO_PORT, LED_PIN);
+    HAL_Delay(1000);
+  }
+}
+
+void SysTick_Handler(void)
+{
+  HAL_IncTick();
+}
+
+void NMI_Handler(void)
+{
+}
+
+void HardFault_Handler(void)
+{
+  while (1) {}
+}
+
+
+void MemManage_Handler(void)
+{
+  while (1) {}
+}
+
+void BusFault_Handler(void)
+{
+  while (1) {}
+}
+
+void UsageFault_Handler(void)
+{
+  while (1) {}
+}
+
+void SVC_Handler(void)
+{
+}
+
+
+void DebugMon_Handler(void)
+{
+}
+
+void PendSV_Handler(void)
+{
+}
diff --git a/unit-testing/stm32cube/src/main.h b/unit-testing/stm32cube/src/main.h
new file mode 100644
index 0000000..8b92380
--- /dev/null
+++ b/unit-testing/stm32cube/src/main.h
@@ -0,0 +1,10 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+#include "stm32f4xx_hal.h"
+
+#define LED_PIN                                GPIO_PIN_5
+#define LED_GPIO_PORT                          GPIOA
+#define LED_GPIO_CLK_ENABLE()                  __HAL_RCC_GPIOA_CLK_ENABLE()
+
+#endif // MAIN_H
\ No newline at end of file
diff --git a/unit-testing/stm32cube/test/test_main.c b/unit-testing/stm32cube/test/test_main.c
new file mode 100644
index 0000000..07a2ba5
--- /dev/null
+++ b/unit-testing/stm32cube/test/test_main.c
@@ -0,0 +1,54 @@
+#include <main.h>
+#include <unity.h>
+
+#ifdef UNIT_TEST
+
+void setUp(void) {
+    HAL_Init();
+
+    LED_GPIO_CLK_ENABLE();
+
+    GPIO_InitTypeDef GPIO_InitStruct;
+    GPIO_InitStruct.Pin = LED_PIN;
+    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+    HAL_GPIO_Init(LED_GPIO_PORT, &GPIO_InitStruct);
+}
+
+void tearDown(void) {
+    HAL_GPIO_DeInit(LED_GPIO_PORT, LED_PIN);
+}
+
+void test_led_builtin_pin_number(void) {
+    TEST_ASSERT_EQUAL(LED_PIN, GPIO_PIN_5);
+}
+
+void test_led_state_high(void) {
+    HAL_GPIO_WritePin(LED_GPIO_PORT, LED_PIN, GPIO_PIN_SET);
+    TEST_ASSERT_EQUAL(HAL_GPIO_ReadPin(LED_GPIO_PORT, LED_PIN), GPIO_PIN_SET);
+}
+
+void test_led_state_low(void) {
+    HAL_GPIO_WritePin(LED_GPIO_PORT, LED_PIN, GPIO_PIN_RESET);
+    TEST_ASSERT_EQUAL(HAL_GPIO_ReadPin(LED_GPIO_PORT, LED_PIN), GPIO_PIN_RESET);
+}
+
+int main() {
+    UNITY_BEGIN();
+
+    RUN_TEST(test_led_builtin_pin_number);
+    for (unsigned int i = 0; i < 5; i++)
+    {
+        RUN_TEST(test_led_state_high);
+        HAL_Delay(500);
+        RUN_TEST(test_led_state_low);
+        HAL_Delay(500);
+    }
+
+    UNITY_END(); // stop unit testing
+
+    while(1){}
+}
+
+#endif
diff --git a/unit-testing/stm32cube/test/unittest_transport.c b/unit-testing/stm32cube/test/unittest_transport.c
new file mode 100644
index 0000000..bed7c01
--- /dev/null
+++ b/unit-testing/stm32cube/test/unittest_transport.c
@@ -0,0 +1,72 @@
+#include "unittest_transport.h"
+#include "stm32f4xx_hal.h"
+
+#define USARTx                           USART2
+#define USARTx_CLK_ENABLE()              __HAL_RCC_USART2_CLK_ENABLE()
+#define USARTx_CLK_DISABLE()             __HAL_RCC_USART2_CLK_DISABLE()
+#define USARTx_RX_GPIO_CLK_ENABLE()      __HAL_RCC_GPIOA_CLK_ENABLE()
+#define USARTx_TX_GPIO_CLK_ENABLE()      __HAL_RCC_GPIOA_CLK_ENABLE()
+#define USARTx_RX_GPIO_CLK_DISABLE()     __HAL_RCC_GPIOA_CLK_DISABLE()
+#define USARTx_TX_GPIO_CLK_DISABLE()     __HAL_RCC_GPIOA_CLK_DISABLE()
+
+#define USARTx_FORCE_RESET()             __HAL_RCC_USART2_FORCE_RESET()
+#define USARTx_RELEASE_RESET()           __HAL_RCC_USART2_RELEASE_RESET()
+
+#define USARTx_TX_PIN                    GPIO_PIN_2
+#define USARTx_TX_GPIO_PORT              GPIOA
+#define USARTx_TX_AF                     GPIO_AF7_USART2
+#define USARTx_RX_PIN                    GPIO_PIN_3
+#define USARTx_RX_GPIO_PORT              GPIOA
+#define USARTx_RX_AF                     GPIO_AF7_USART2
+
+static UART_HandleTypeDef UartHandle;
+
+void unittest_uart_begin()
+{
+   GPIO_InitTypeDef  GPIO_InitStruct;
+
+  USARTx_TX_GPIO_CLK_ENABLE();
+  USARTx_RX_GPIO_CLK_ENABLE();
+
+  USARTx_CLK_ENABLE();
+
+  GPIO_InitStruct.Pin       = USARTx_TX_PIN;
+  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull      = GPIO_PULLUP;
+  GPIO_InitStruct.Speed     = GPIO_SPEED_FAST;
+  GPIO_InitStruct.Alternate = USARTx_TX_AF;
+
+  HAL_GPIO_Init(USARTx_TX_GPIO_PORT, &GPIO_InitStruct);
+
+  GPIO_InitStruct.Pin = USARTx_RX_PIN;
+  GPIO_InitStruct.Alternate = USARTx_RX_AF;
+
+  HAL_GPIO_Init(USARTx_RX_GPIO_PORT, &GPIO_InitStruct);
+  UartHandle.Instance          = USARTx;
+
+  UartHandle.Init.BaudRate     = 9600;
+  UartHandle.Init.WordLength   = UART_WORDLENGTH_8B;
+  UartHandle.Init.StopBits     = UART_STOPBITS_1;
+  UartHandle.Init.Parity       = UART_PARITY_NONE;
+  UartHandle.Init.HwFlowCtl    = UART_HWCONTROL_NONE;
+  UartHandle.Init.Mode         = UART_MODE_TX_RX;
+  UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
+
+  if(HAL_UART_Init(&UartHandle) != HAL_OK) {
+    while(1){}
+  }
+
+}
+
+void unittest_uart_putchar(char c)
+{
+    HAL_UART_Transmit(&UartHandle, (uint8_t*)(&c), 1, 1000);
+}
+
+void unittest_uart_flush(){}
+
+void unittest_uart_end() {
+  USARTx_CLK_DISABLE();
+  USARTx_RX_GPIO_CLK_DISABLE();
+  USARTx_TX_GPIO_CLK_DISABLE();
+}
diff --git a/unit-testing/stm32cube/test/unittest_transport.h b/unit-testing/stm32cube/test/unittest_transport.h
new file mode 100644
index 0000000..e6da735
--- /dev/null
+++ b/unit-testing/stm32cube/test/unittest_transport.h
@@ -0,0 +1,17 @@
+#ifndef UNITEST_TRANSPORT_H
+#define UNITEST_TRANSPORT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void unittest_uart_begin();
+void unittest_uart_putchar(char c);
+void unittest_uart_flush();
+void unittest_uart_end();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // UNITEST_TRANSPORT_H