/** Port access modes. */
enum sp_mode {
- /** Open port for read/write access. */
- SP_MODE_RDWR = 1,
- /** Open port for read access only. */
- SP_MODE_RDONLY = 2,
+ /** Open port for read access. */
+ SP_MODE_READ = 1,
+ /** Open port for write access. */
+ SP_MODE_WRITE = 2,
/** Open port in non-blocking mode. */
SP_MODE_NONBLOCK = 4,
};
+/** Buffer selection. */
+enum sp_buffer {
+ /** Input buffer. */
+ SP_BUF_INPUT = 1,
+ /** Output buffer. */
+ SP_BUF_OUTPUT = 2,
+ /** Both buffers. */
+ SP_BUF_BOTH = 3,
+};
+
/** Parity settings. */
enum sp_parity {
/** Special value to indicate setting should be left alone. */
enum sp_return sp_write(struct sp_port *port, const void *buf, size_t count);
/**
- * Flush serial port buffers.
+ * Flush serial port buffers. Data in the selected buffer(s) is discarded.
+ *
+ * @param port Pointer to port structure.
+ * @param buffers Which buffer(s) to flush.
+ *
+ * @return SP_OK on success, SP_ERR_FAIL on failure, or SP_ERR_ARG
+ * if an invalid port is passed.
+ */
+enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers);
+
+/**
+ * Wait for buffered data to be transmitted.
*
* @return SP_OK on success, SP_ERR_FAIL on failure, or SP_ERR_ARG
* if an invalid port is passed.
*/
-enum sp_return sp_flush(struct sp_port *port);
+enum sp_return sp_drain(struct sp_port *port);
/**
* @}