Enlarge timer thread stack size for Cortex-M23/M33

[ccli8]

Description

This PR tries to enlarge default size of timer thread stack for Cortex-M23/M33 targets. The adjustment is based on port of our on-going NUMAKER_PFM_M2351 target.

Pull request type

[X] Fix
[ ] Refactor
[ ] New target
[ ] Feature
[ ] Breaking change

[deepikabhavnani]

Increasing timer stack size for all devices (including the ones which do not support trustZone and have limited RAM memory) does not make sense. Shall we have config option for timer stack size?

[ccli8]

@deepikabhavnani I change back the default size of timer thread but keep the configuration option for it in 438788b.

[deepikabhavnani]

@ccli8 - Having config option is good. It will be good to have additional define MBED_CONF_xxx as config similar to others (MBED_CONF_APP_THREAD_STACK_SIZE)

[ccli8]

@deepikabhavnani I add the macros MBED_CONF_APP_TIMER_THREAD_STACK_SIZE/MBED_CONF_APP_IDLE_THREAD_STACK_SIZE for configuration by user application.

[deepikabhavnani]

Looks good to me 👍

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 1914
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6773/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 1560
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6773/

[0xc0170]

@deepikabhavnani Any documentation needed for this extension?

Having this configuration documented for rtos like main thread stack size, this timer thread stack size, etc ?

[mbed-ci]

Test : SUCCESS

Build number : 1731
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/6773/1731

[deepikabhavnani]

Any documentation needed for this extension?

👍 Added PR in handbook. ARMmbed/mbed-os-5-docs#510