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Testing Mbed TLS on Mbed OS
Updated 86 Days AgoPublic

Running Mbed TLS tests on Mbed OS

Unit tests

You can run the Mbed TLS unit tests on Mbed OS.


  • Mbed OS ≥5.5.1
  • Mbed TLS ≥2.13 (this doesn't have to be the version in your copy of Mbed OS)
  • The Mbed OS development tools (pip install --user mbed-tools), including Greentea (mbed-gt)

Some test suites may not work on platforms with too little space for code, stack or heap.

Building the tests

  • Check out mbed-os
  • cd mbed-os/features/mbedtls/importer/TARGET_IGNORE
  • Optional: check out mbedtls) — you can work in your working Mbed TLS branch
  • cd mbedtls/tests
  • make generate-target-tests
  • mkdir TESTS/host_tests
  • cp scripts/ TESTS/host_tests
  • copy the TESTS directory in mbed-os/features/mbedtls/
  • cd back to mbed-os/
  • mbed test --compile -m K64F -t GCC_ARM -n features-mbedtls-tests-mbedtls* (adapt -m to your platform and -t to your compiler)

You should now see mbedtls tests with the command mbedgt -V -l

Running the tests

To run the AES tests, for example:

mbedgt -V -n features-mbedtls-tests-mbedtls-test_suite_aes*

Debugging the on-target tests

To debug the tests, you will need to use a pyocd-gdbserver.

In order to debug the tests, you will need:

  1. Burn the test image on the target
  2. Run pyocd-gdbserver: pyocd-gdbserver
  3. Run your gdb client
  4. Run mbedhtrun with --skipflash and --skip reset. For example:
sudo mbedhtrun -m NRF52840_DK -p /dev/ttyACM0:9600 -f "BUILD/tests/NRF52840_DK/GCC_ARM-DEBUG/features/mbedtls/TESTS/mbedtls/test_suite_psa_crypto/test_suite_psa_crypto" -e "features/mbedtls/TESTS/host_tests" -d /media/roneld01/DAPLINK1 -C 6 -c default -t 1102000044203120414a4e39313031313730303797969903 -r default --sync 5 --skip-flash --skip-reset

Note: when running the mbedgt for the test with -V parameter, you will see the mbedhtrun command that it runs. Just copy this line, and add the --skip-reset and --skip-flash parameters

Note: The tests are generated with lines that start with #line. The debugger doesn't neccessary recognize these lines, and might not interpret the test files. You sould delete the lines that start with "#line" and recompile. (There may be a way to have the debugger point to the origin of the files - target_test.function and helpers.function but I didn't check this)

Last Author
Last Edited
Apr 16 2020, 3:13 PM