diff --git a/.github/codecov.yml b/.github/codecov.yml
new file mode 100644
index 00000000000..06cdb1b4980
--- /dev/null
+++ b/.github/codecov.yml
@@ -0,0 +1,38 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "0...100"
+  status:
+    project:
+      default:
+        # basic
+        target: auto
+        threshold: 2%
+        base: auto
+        # advanced
+        branches:
+          - master
+        if_not_found: success
+        if_ci_failed: error
+        informational: true
+        only_pulls: false
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach,diff,flags,files,footer"
+  behavior: default
+  require_changes: no
+
+ignore:
+  - "**/tests/**"
+  - "**/test/**"
diff --git a/.github/workflows/basic_checks.yml b/.github/workflows/basic_checks.yml
index 0df1123509d..c6d49ea741f 100644
--- a/.github/workflows/basic_checks.yml
+++ b/.github/workflows/basic_checks.yml
@@ -204,6 +204,7 @@ jobs:
       TOOLCHAIN: GCC_ARM 
       TARGET_NAME: K64F 
       PROFILE: develop
+      COVERAGE_FILE: coverage.xml
     runs-on: ubuntu-latest
     container:
       image: ghcr.io/armmbed/mbed-os-env:master-latest
@@ -225,9 +226,17 @@ jobs:
         run: |
           set -x     
           ctest --build-and-test . build --build-generator Ninja --build-options -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug -DCOVERAGE=ON --test-command ctest        
-          gcovr --gcov-executable gcov -r . ./build -s -e ".*\.h" --exclude-directories=${GITHUB_WORKSPACE}/build/UNITTESTS --exclude-directories=${GITHUB_WORKSPACE}/build/_deps
+          gcovr --gcov-executable gcov -r . ./build -s -x ${{ env.COVERAGE_FILE }} -e ".*\.h" --exclude-directories=${GITHUB_WORKSPACE}/build/UNITTESTS --exclude-directories=${GITHUB_WORKSPACE}/build/_deps
           ccache -s
 
+      -
+        name: upload coverage
+        uses: codecov/codecov-action@v2
+        with:
+          token: 57166f89-22b3-4949-9488-ddd3c78123fb
+          files: ${{ env.COVERAGE_FILE }}
+          verbose: true
+
   # Reject any changes to tools that would require a re-release of the
   # tools for the online compiler.
   frozen-tools-check: