rp2/machine_pin: Add support for setting pin drive strength & slew rate #17906
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…rate
Currently when micropython uses GPIO pins as outputs, their actual
configuration for pin drive strength and slew rate is the default one,
which was set at power-on/reset (4mA, slow slew rate). There's no way to
change these pin configurations in the micropython environment (other
than low-level hacks with mem32[]).
This patch adds the ability to explicitly configure rp2040/rp2350 output
pins' drive strength and slew rate, if/when needed, like this:
pin1 = Pin(1, Pin.OUT, drive=Pin.DRIVE_12, slew=Pin.SLEW_FAST)
As the new drive/slew parameters are optional kwargs, all existing code
and examples will still work as expected, like this:
pin2 = Pin(2, Pin.OUT)
All relevant documentation files are updated.
Tested on rpi-pico and rpi-pico2 boards.
Signed-off-by: Nikolay Dimitrov <nikolay.dimitrov@retrohub.org>
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Code size report: |
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Related to issue #14068. |
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Summary
Currently when micropython uses GPIO pins as outputs, their actual configuration for pin drive strength and slew rate is the default one, which was set at power-on/reset (4mA, slow slew rate). There's no way to change these pin configurations in the micropython environment (other than low-level hacks with mem32[]).
This patch adds the ability to explicitly configure rp2040/rp2350 output pins' drive strength and slew rate, if/when needed, like this:
As the new drive/slew parameters are optional kwargs, all existing code and examples will still work as expected, like this:
All relevant documentation files are updated.
Testing
Tested on rpi-pico and rpi-pico2 boards.