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doc: release-notes-2.2: update for GPIO deprecations

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Add a section describing what's been deprecated and how to replace it.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
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Peter Bigot 2020-01-30 08:38:29 -06:00 • committed by Carles Cufí
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doc/releases/release-notes-2.2.rst
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@ -31,6 +31,36 @@ Deprecated in this release
Stable API changes in this release
==================================
* GPIO
* The gpio_pin_write() and gpio_pin_read() functions have been
deprecated, and should be replaced with gpio_pin_set_raw() and
gpio_pin_get_raw(), or if the active level flags were present and
supported by gpio_pin_set() and gpio_pin_get(). The functions have
been re-implemented with these substitutes.
* The gpio_pin_enable_callback() function has been deprecated, and
should be replaced by gpio_pin_interrupt_configure(), passing the
appropriate interrupt configuration.
* The gpio_pin_disable_callback() function has been deprecated, and
should be replaced by gpio_pin_interrupt_configure() passed
GPIO_INT_DISABLE.
* Many GPIO configuration flags have been deprecated and replaced by
more carefully selected flags. These include:
* GPIO_DIR_OUT becomes GPIO_OUTPUT
* GPIO_DIR_IN becomes GPIO_INPUT
* GPIO_DS_DISCONNECT_LOW becomes GPIO_OPEN_SOURCE
* GPIO_DS_DISCONNECT_HIGH becomes GPIO_OPEN_DRAIN
* GPIO_PUD_NORMAL becomes 0
* GPIO_PUD_PULL_UP becomes GPIO_PULL_UP
* GPIO_PUD_PULL_DOWN becomes GPIO_PULL_DOWN
* GPIO_INT becomes GPIO_INT_ENABLE
* GPIO_INT_LEVEL becomes not GPIO_INT_EDGE
* GPIO_INT_ACTIVE_LOW becomes GPIO_ACTIVE_LOW or GPIO_INT_LOW_0
* GPIO_INT_ACTIVE_HIGH becomes GPIO_ACTIVE_HIGH or GPIO_INT_HIGH_1
* GPIO_INT_DOUBLE_EDGE becomes GPIO_INT_EDGE_BOTH
* GPIO_POL_NORMAL becomes GPIO_ACTIVE_HIGH
* GPIO_POL_INV becomes GPIO_ACTIVE_LOW
* PWM
* The pwm_pin_set_cycles(), pwm_pin_set_usec(), and