h6. [[Hardware Abstraction Layer]] h6(. [[HAL entry points from RISC OS]] h6((. » HAL_UARTFIFOThreshold h2. HAL_UARTFIFOThreshold h5. (HAL entry #78) <pre> int HAL_UARTFIFOThreshold(int port, int threshold) </pre> |_<. Entry | | |port |Port number to modify | |threshold |Threshold for RX FIFO interrupt, or -1 to just read current value. | |_<. Exit | | |- |Returns previous RX FIFO threshold | h4. Use This is an internal call for use by the [[DualSerial]] module and should not be used by user code. Instead of calling the HAL directly, user code should interact with the Serial* entries that DualSerial creates in DeviceFS. Sets the receive threshold level for the FIFO RX interrupt. Normally available values are 1,4,8 and 14 bytes. Returns previous value. -1 to read. h4. See also * [[HAL UART API]] h6. Information source: Kernel.Docs.HAL.Serial in CVS