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The ioctlUSE_CIRCULAR_BUFFER_RX request code is used in a call to FreeRTOS_ioctl() to configure a peripheral to use the interrupt driven circular buffer transfer mode for reads. Note this request code will result in the peripheral's interrupt being enabled, and the peripheral's interrupt priority being set to the lowest possible. The ioctlSET_INTERRUPT_PRIORITY request code can be used to raise the peripheral's priority if necessary.
Example Usage
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