1. Kconfig option Clock prescaler removed.
2. Modified pwm_nrf5_sw.c driver to use DT
defines instead of Kconfig, and also use new
DT options (timer, ppi/gpiote, etc).
3. Cleanup some code.
Signed-off-by: Gaute Gamnes <gaute.gamnes@nordicsemi.no>
The channels assigned to the controller are reordered so that the ones
previously used and now available for other purposes have continuous
numbers. When the controller can take advantage of the pre-programmed
PPI channels (when TIMER0 is used as the event timer), the now free
channels are 0-4, when it cannot, it is the channel 0.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
Add support for specifying the clock prescaler value for the HF timer
used for generating the PWM signals. This allows for lower timer
frequency and thus slower PWM signals (e.g. for use as servo
controller).
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
The nRF5x HF timer base frequency is 16 MHz, not 16777216 Hz.
The improved accurracy of the PWM signal was verified with an
oscilloscope on a BBC micro:bit.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
The default PWM polarity was 'inversed', which is not aligned with the
other PWM drivers. Unfortunately there is not yet an API to define the
default polarity to be used by the driver, but assume that 'normal'
(signal starts high for the duration of the duty cycle) should be the
default.
Signed-off-by: Ricardo Salveti <ricardo@opensourcefoundries.com>
As the nRF5x BLE controller uses TIMER1, TIMER2 and PPI
indices 0-13 (and 14-15, if PA/LNA feature is enabled),
the software based PWM driver needing 6 PPI channels has
to use PPI indices outside the BLE controller used range.
Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types.
Jira: ZEP-2051
Change-Id: I08f51e2bfd475f6245771c1bd2df7ffc744c48c4
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add support for nRF5x series GPIOTE based PWM driver
implementation.
Provides upto 3 pins/channels using one HF timer, two PPI
channels per pin, and one GPIOTE config per pin.
Change-id: I6056b199ec2cff595ba8fea9f659a0338ed4635b
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
