Configure RTOS tick under 1ms versus portTICK_PERIOD_MS
(TMS570LC4, nested interrupt, C++, FreeRTOS V9.0.0rc2, compiler TI v5.2.7, rtos running ok).
Considering
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Configure RTOS tick under 1ms versus portTICK_PERIOD_MS
portTICKPERIODMS is not used ANYWHERE in the FreeRTOS source code, it
is only provided as a convenience, and in fact, its use is not
recommended now as the pdTICKSTOMS() macro should be used in its place.
FreeRTOS V9.0.0 (not the release candidate) allows pdMSTOTICKS() to be
overridden, should the default implementation not give the accuracy
required (it considers speed more).
portTICKPERIODMS and pdMSTOTICKS() is used in a lot of places in
example code and external components, but again for convenience, and
FreeRTOS has no dependency on it.
That all said – it is rarely a good idea to set the tick rate greater
than 1KHz – 100Hz being typical.