||6 years ago|
|Makefile||6 years ago|
|README.md||6 years ago|
|main.c||8 years ago|
|test.py||6 years ago|
Test warning on conflicting features
Using conflicting features provided by boards was invisible for the user until the used features resulted in a traceable problem or the user was aware of the conflict in advance from documentation ect.
Now, existing and known conflicts can be recorded into
FEATURES_CONFLICT for each board to inform the user on a conflict situation during compile time.
This test requires conflicting features in its
FEATURES_REQUIRED = periph_dac periph_spi.
It is expected to be presented with a warning on the conflicts with a short description message during compile time for the stm32f4discovery by now, i.e. :
$ make BOARD=stm32f4discovery The following features may conflict: periph_dac periph_spi Rationale: On stm32f4discovery boards there are the same pins for the DAC and/or SPI_DEV(0). EXPECT undesired behaviour!
The warning presents the conflicting features derived from
FEATURES_CONFLICT and an optional message derived from
FEATURES_CONFLICT_MSG provided int the
Whenever an application, such as this test, requires board features that match a conflict group, e.g.
FEATURES_REQUIRED = periph_dac periph_spi, a similar warning to the above will be displayed during compile time.
###Usage of conflict groups:
Conflicting features are described in groups separated by a
:(doublecolon) for each feature, e.g.:
FEATURES_CONFLICT = periph_spi:periph_dac, which states that
periph_dac. As seen above, this is the conflict of
SPI_DEV(0)pinout is shared with
DACon the stm32f4discovery board.
Distinct groups of conflicts are whitespace separated, e.g.:
featureA:featureB featureC:featureD, which states that
featureD. This also means, that e.g.
FEATURES_REQUIRED = featureA featureDwould not produce a warning.
The groups can have an arbitrary number of conflicting features, e.g.:
An optional information can be given using the
FEATURES_CONFLICT_MSG = "featureA uses the same pins as featureB"
If the required features match multiple conflict groups, ALL conflicting features are provided to the user, e.g.:
FEATURES_CONFLICT = featureA:featureB featureC:featureDand
FEATURES_REQUIRED = featureA featureB featureC featureDwould result in:
The following features may conflict: featureA featureB featureC featureD