Migrate tutorials to integer GPIO numbers - #578
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Peripheral and driver pin parameters in the SDK and driver packages moved from `gpio.Pin` to integer GPIO numbers (the peripheral reserves/releases the pin itself). Update the tutorial code and the matching documentation snippets so pins that are handed to a peripheral/driver are passed as integers: - SDK peripherals: i2c.Bus, spi.Bus, gpio.Adc, gpio.Touch, gpio.pwm. - Driver packages: dhtxx (dht11), pixel-strip (neopixel), hc-sr04 (ultra). Pins that are driven directly (led/button outputs, inputs read with .get/.wait-for, the raw hc-sr04 example) keep using gpio.Pin -- that is not the deprecated path. Bump the driver package versions the tutorials now require to their anticipated int-API minor release: - toit-dhtxx @v1 -> @v1.11 - toit-pixel-strip @v1.3 -> @v1.4 - toit-hc-sr04 @v2 -> @v2.3 The ds18b20 tutorial keeps gpio.Pin: toit-ds18b20 was not part of the migration campaign, so its constructor still takes a gpio.Pin.
toit-ds18b20 now accepts an integer GPIO number (the one-wire bus reserves and releases the pin). Pass the integer directly to Ds18b20 and drop the gpio.Pin. Bump the package pin to the int-API release: @2 -> @2.2.
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Alpha.197 was released after local validation; CI may temporarily fail while release binaries propagate.