This adds MIMXRT-specific arguments and methods, as a superset of the
original Encoder/Counter documentation.
The mimxrt pinout and quickref docs are updated with relevant information.
Signed-off-by: robert-hh <robert@hammelrath.com>
Since all boards are configured to have a I2C(0), SPI(0) and UART(1), these
can be set as default devices, allowing the instantiation of I2C(), SPI(),
UART() without an id argument.
Signed-off-by: robert-hh <robert@hammelrath.com>
The following ports used 65536 as the upper value (100% duty cycle) and are
changed in this commit to use 65535: esp8266, mimxrt, nrf, samd.
Tested that output is high at `duty_u16(65535)` and low at `duty_u16(0)`.
Also verified that at `duty_u16(32768)` the high and low pulse have the
same length.
Partially reverts #10850, commits 9c7ad68165
and 2ac643c15b.
Signed-off-by: robert-hh <robert@hammelrath.com>
This adds the freq and duty_u16 keyword settings to the constructor, and
sometimes other details in the PWM section.
For mimxrt a clarification regarding the PWM invert argument was added, and
for rp2 a few words were spent on PWM output pairs of a channel/slice.
In that case, no Pin will be configured for the CS signal, even if it is
internally still generated. That setting allows to use any pin for CS,
which then must be controlled by the Python script.
Also make the default cs=-1 to match other ports (software CS).
robert-hh
Felix Dörre
Phil Howard
Damien George