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>
This adds support for the ALT11 alternate function mode on MIMXRT1176
MCUs, enabling FLEXPWM channels on GPIO_AD pins that were previously
unavailable for PWM use.
Changes:
- Add PIN_AF_MODE_ALT11 enum to pin.h
- Add ALT11 column to MIMXRT1176_af.csv with FLEXPWM mappings
- Enables FLEXPWM1-4 on GPIO_AD_06 through GPIO_AD_21
This change only affects MIMXRT1176-based boards (MIMXRT1170_EVK and
PHYBOARD_RT1170). Other MIMXRT family chips use alternate function
modes ALT0-ALT9 and are not affected.
Tested on MIMXRT1176 hardware with PWM output on GPIO_AD_14
(FLEXPWM3_PWM0_X).
Signed-off-by: Algy Tynan <algy@tynan.io>
The documentation used integers to specify Teensy board pins, which match
the board's silkscreen. But in Python code Dxx have to be used, since
integers are not accepted as a Pin identifier.
This commit changes the Pinout tables accordingly, consistent with the
other MIMXRT boards.
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>
This is a board based on the i.MX RT1011 in breadboard-friendly shape. A
good basic board with 16M flash and regular pinout, providing access to
many GPIO_nn and GPIO_AD_nn Pins.
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).
