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HAL_UARTFIFOThreshold
Hardware Abstraction Layer
HAL entry points from RISC OS
ยป HAL_UARTFIFOThreshold
HAL_UARTFIFOThreshold
(HAL entry #78)
int HAL_UARTFIFOThreshold(int port, int threshold)
| Entry | |
|---|---|
| port | Port number to modify |
| threshold | Threshold for RX FIFO interupt, or -1 to just read current value. |
| Exit | |
|---|---|
| - | Returns previous RX FIFO threshold |
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.