Fix TLS example by enabling SHA-1 certificates out of the box (#149)

Fix all Doxygen errors and make any future errors fatal (#118) ...

* Start working on fixing doxygen warnings

* Upgrade doxyfile to Doxygen 1.9.1

* Clean up some unmatched groups and add some exclusions

* Fix docs for rtos::ThisThread not showing up

* Fix up KV store docs

* Fix incorrect @files, some more incorrect groups

* Fix lots of broken links

* Start fixing mbedtls groups

* Fix more mbedtls docs

* Fix remaining mbedtls files with missing or incorrect grouping

* Fix a huge amount of PSA docs errors

* Fix a few more mbedtls docs errors

* Fix __cplusplus not defined for docs, clean up call in callback typedef, fix some docs errors

* Fix some broken doc links in HAL headers

* Fix more PSA doc errors

* Fix some doxygen errors in networking code

* Fix lots of network related doc errors

* Try and fix some CI failures

* Use Doxygen Action instead of doxygen in Mbed container to get the right version

* Try removing docs check

* Add first part of doxygen action

* Add next part of doxygen action

* Fix yaml syntax error

* Add in license check fix

* Try using verbose scancode

* Fix some more docs issues, workaround scancode-toolkit#3179

* Clean up the LoRaRadio get_state() function on each implementation.  Also fix some other compile and doc errors.

* Fix all remaining doxygen errors

* Fix escaping, for realsies this time

* Remove Doxygen unsupported config options, fix some more get_status() declarations

* Fix some UNITTESTS build errors

* Fix one more compile error

* Another unittest error

Fix ABI differences between mbed-baremetal and mbed-os, remove PlatformMutex

Rename inconsistently named testing-related variables. Also fix STM32CUBE not working from application code.

Convert lorawan to a STATIC library

Convert emac, cellular, and wifi targets, and enable one UDP test

Convert the rest of the hal tests, convert mbedtls to an OBJECT library

Clean up top-level build file and build options, fix build issues on MinGW

Mbed TLS: Fix wrong MPI N in ECP Curve448 curve ...

In loading Curve448, MPI N is in uninitialized state and its sign flag N.s isn't initialized to 1.
This is fixed by following:
https://github.com/Mbed-TLS/mbedtls/pull/5811

Mbed TLS: Fix compile error with ECP alternative ...

Fix un-paired parenthesis when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is enabled

CMake: connectivity: Guard unit test directories ...

When unit tests or unit test stubs get added as CMake targets, they
becomes part of the "all" target and get compiled when building the
whole project. When building greentea tests we need to disable unit
tests and stubs to avoid unnecessary compilation and errors.

CMake: Limit the mbed-stubs-mbedtls to required dependency mocks

CMake: Move mbedtls stub headers to the mbedtls doubles dir ...

Previously all the mbedtls stubs headers under mbed-stubs-headers,
so this PR move all mbedtls stubs headers under
mbedtls/tests/UNITTESTS/double directory and update CMake to include
stubs headers into mbed-stubs-mbedtls library to make mbedtls stubs
to be self-contained.

CMake: Update netsocket, lorawan unittest to use mbed-stubs-mbedtls ...

Update netsocket and lorawan unit tests to link with a mbed-stubs-mbedtls
library that it depends on instead of link with mbed-stubs
which is a group of stubs libraries.

CMake: Move mbedtls stubs to the mbedtls dir ...

Move the connectivity mbedtls stubs into the connectivity/mbedtls
component directory. So we can avoid duplicating the mbed-os source
tree in a central UNITTESTS folder.

Merge pull request #14815 from LDong-Arm/test_psa_k64f_k66f ...

Enable PSA tests on K64F/K66F and fix missing PSA Crypto init in TLSSocketWrapper

CMake: Require TEST_SOURCES in greentea CMake file ...

Assumption that greentea test file is always named main.cpp is
incorrect. Updated mbed_greentea_add_test() macro to make TEST_SOURCES
parameter compulsory, which is used to specify greentea test
file(s). This allows tests to use C, or have a different name.
Therefore also updated all pre-existing greentea test CMake files to
explicity add main.cpp to TEST_SOURCES.

platform_mbed.h: Fix and align EXPERIMENTAL_API check ...

Some of the lines in `platform_mbed.h` only have `FEATURE_PSA`
checked, which is always set for Mbed OS PSA targets but the PSA
APIs are not actually available unless `FEATURE_EXPERIMENTAL_API`
is also enabled. To fix this and improve readability, group all
PSA-related lines and check both macros.

Merge pull request #14772 from LDong-Arm/mbedtls_timing ...

Improve implementation of Mbed TLS timing

Move Mbed TLS self tests to a separate configuration ...

We potentially save flash space by not enabling Mbed TLS self-tests
by default. A new test config file, TESTS/configs/mbedtls.json, is
provided to enable self tests. This newly created JSON file also
enables timing in Mbed TLS so timing gets tested.

mbedtls: Run mbedtls_timing_self_test if MBEDTLS_TIMING_C ...

This allows us to verify the support for Mbed TLS timing on Mbed OS.

Note: The macros MBEDTLS_TIMING_C and MBEDTLS_TIMING_ALT are not
enabled by default and need to be additionally enabled to run this
test.

mbedtls: Use LowPowerTimeout for mbedtls_set_alarm() if available ...

The function `mbedtls_set_alarm()` is only precise to seconds, so
`LowPowerTimeout` is enough and saves power.

timing_mbed.cpp: Check MBEDTLS_TIMING_ALT ...

Do not compile the Mbed implementation of Mbed TLS unless
MBEDTLS_TIMING_ALT is defined. This prevents a macro check error on
devices that do not have LPTICKER or USTICKER when Mbed TLS timing
is not enabled.

mbedtls: Add full platform implementation of timing ...

When MBEDTLS_TIMING_C and MBEDTLS_TIMING_ALT are enabled,
the Arm Compiler generates errors like the following (one for
each missing symbol):

    Error: L6218E: Undefined symbol mbedtls_timing_get_delay

Reason:

The function `mbedtls_timing_self_test()` in the Mbed TLS default
`timing.c` always gets compiled, if MBEDTLS_SELF_TEST is defined.
And MBEDTLS_SELF_TEST is always defined, as we have a Greentea test
to run some of the Mbed TLS self tests. (In the future we should try
not to enable MBEDTLS_SELF_TEST except for tests, but it requires
a rework in our test flow.)

`mbedtls_timing_self_test()` tests (calls) the full API declared in
`timing.h`, and the ARM Compiler requires all symbols referenced by
all functions to be defined, even those not used by the final
application. This is unlike GCC_ARM which resolves what are required.

Solution:

To fix the "undefined symbol" errors, we add an implementation of
`mbedtls_timing_get_timer()` based on Mbed OS `LowPowerTimer` or
`Timer` (depending on which one is available), and copy Mbed TLS's
default `mbedtls_timing_set_delay()` and `mbedtls_timing_get_delay()`
which are built on top of `mbedtls_timing_get_timer()`. This will also
benefit user applications that need to enable timing in Mbed TLS.

mbedtls: Use LowPowerTimer/Timer for timing ...

Previously we used `gettimeofday()` for Mbed TLS timing, but its
implementation provided by Mbed OS is only precise to seconds. The
microsecond component of the output `struct timeval` is always set
to zero. But Mbed TLS requires millisecond precision.

To provide required timing precision, switch to use `LowPowerTicker`
or (microsecond) `Ticker`. `LowPowerTicker` is preferred as it saves
power and Mbed TLS does not require microsecond precision.

Merge pull request #14741 from boraozgen/trng-def-checks ...

MbedTLS: Add definition checks for TRNG

mbedtls: Rename Mbed timing implementation ...

We get a linker warning with the recently added timing module
implementation for Mbed. This is because there is Mbed TLS also ships a
file called timing.c, which we are including in Mbed OS also. With CLI
1, we get an error about unique object files because of the similarly
named implementation files.

    Object file timing.o is not unique! It could be made from: mbed-os/connectivity/mbedtls/source/timing.c mbed-os/connectivity/mbedtls/platform/src/timing.cpp

Rename the Mbed timing module implementation to timing_mbed.cpp to avoid
this naming conflict.

Fixes: b8781e527bc1 ("mbedtls: Add an alt implementation of timing")

Fixes #14759

mbedtls: Add an alt implementation of timing ...

Implement the MBEDTLS_TIMING_ALT interface for Mbed OS. This
implementation is sufficient to run the Mbed TLS benchmarking
application.

MbedTLS: Add definition checks for TRNG ...

The compiler gave redefinition warnings if
MBEDTLS_ENTROPY_HARDWARE_ALT is defined in the the compile
definitions. A check is added to prevent this warning.

Merge pull request #14652 from Patater/upgrade-mbedtls-2.25.0 ...

tls: Upgrade to Mbed TLS v2.25.0