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41 lines
834 B
Markdown
41 lines
834 B
Markdown
# Modules Reference: Optical Flow (Driver)
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## thoneflow
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Source: [drivers/optical_flow/thoneflow](https://github.com/PX4/PX4-Autopilot/tree/main/src/drivers/optical_flow/thoneflow)
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### Description
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Serial bus driver for the ThoneFlow-3901U optical flow sensor.
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Most boards are configured to enable/start the driver on a specified UART using the SENS_TFLOW_CFG parameter.
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Setup/usage information: https://docs.px4.io/main/en/sensor/pmw3901.html#thone-thoneflow-3901u
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### Examples
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Attempt to start driver on a specified serial device.
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```
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thoneflow start -d /dev/ttyS1
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```
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Stop driver
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```
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thoneflow stop
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```
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### Usage {#thoneflow_usage}
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```
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thoneflow <command> [arguments...]
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Commands:
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start Start driver
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-d <val> Serial device
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stop Stop driver
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info Print driver information
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```
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