Current implementation supports the trigger generation only from timer
capture on period value. This is sufficient for PWM synchronization but
may not be enough for other purposes as ADC triggering for example.
This change adds an option to generate the trigger based on a duty
cycle value.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
Config option IMXRT_ADCx_ETC can now be used to select an external HW
trigger to be used instead of continous trigger. Continous trigger is
used if IMXRT_ADCx_ETC = -1 (default option). Otherwise the source signal
is routed through XBAR and used as a trigger.
Hardware triggering is currently limited to maximum of 8 channels.
HW trigger is automatically disabled if there are more than 8 channels.
The external triggering was tested with PWM signal as a source.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
This commit allows the PWM modules to be synchronized by an external
signal (other PWM module for example). The sync source can be selected
from configuration.
PWM module can also now generate a trigger when its timer reaches the duty
cycle. This trigger is used for the synchronization of other modules. It
can also be used for triggering ADC for example in the future.
Thanks to Rastislav Pavlanin and Jan Spurek from NXP support for
suggestion which helped to solve the inter-module PWM synchronization
task.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
Multiple files were badly formatted, which resulted in many
warnings. This made it harder to check for errors in newly
written documentation.
What's worse, badly formatted text resulted in butchered
output in generated html.
This patch fixes most of the errors, but alas, not all of
the errors can be fixed. Anyway, this should be way easier
to spot errors in newly written docs now.
Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
Michal Lenc