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Several reviewers agreed that DT_HAS_NODE_STATUS_OKAY(...) was an undesirable API for the following reasons: - it's inconsistent with the rest of the DT_NODE_HAS_FOO names - DT_NODE_HAS_FOO_BAR_BAZ(node) was agreed upon as a shorthand for macros which are equivalent to DT_NODE_HAS_FOO(node) && DT_NODE_HAS_BAR(node) && - DT_NODE_HAS_BAZ(node), and DT_HAS_NODE_STATUS_OKAY is an odd duck - DT_NODE_HAS_STATUS(..., okay) was viewed as more readable anyway - it is seen as a somewhat aesthetically challenged name Replace all users with DT_NODE_HAS_STATUS(..., okay), which is semantically equivalent. This is mostly done with sed, but a few remaining cases were done by hand, along with whitespace, docs, and comment changes. These special cases include the Nordic SOC static assert files. Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no> |
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.. _servo-motor-sample: PWM: Servo motor ################ Overview ******** This is a sample app which drives a servo motor using PWM. This app is targeted for servo motor ROB-09065. With the PWM control signal, the servo motor can rotate to any angle between 0 and 180 degrees. The corresponding PWM pulse width is between 700 micro seconds and 2300 micro seconds. The motor is programmed to rotate back and forth in the 180 degree range. Since different servo motors may require different PWM pulse width, you may need to modify the pulse width in the app if you are using a different servo motor. Wiring ****** BBC micro:bit ============= You will need to connect the motor's red wire to external 5V, the black wire to ground and the white wire to pad 0 on the edge connector. Building and Running ******************** This sample can be built for multiple boards, in this example we will build it for the bbc_microbit board: .. zephyr-app-commands:: :zephyr-app: samples/basic/servo_motor :board: bbc_microbit :goals: build flash :compact: