Comtrol eCos - Manual (Page 370)

Chapter 16. Serial driver details
CYGNUM_SERIAL_BAUD_1200
CYGNUM_SERIAL_BAUD_1800
CYGNUM_SERIAL_BAUD_2400
CYGNUM_SERIAL_BAUD_3600
CYGNUM_SERIAL_BAUD_4800
CYGNUM_SERIAL_BAUD_7200
CYGNUM_SERIAL_BAUD_9600
CYGNUM_SERIAL_BAUD_14400
CYGNUM_SERIAL_BAUD_19200
CYGNUM_SERIAL_BAUD_38400
CYGNUM_SERIAL_BAUD_57600
CYGNUM_SERIAL_BAUD_115200
CYGNUM_SERIAL_BAUD_234000
The field stop contains the number of stop bits. This must be one of the values:
CYGNUM_SERIAL_STOP_1
CYGNUM_SERIAL_STOP_1_5
CYGNUM_SERIAL_STOP_2
Note: On most hardware, a selection of 1.5 stop bits is only valid if the word (character) length is 5.
The field parity contains the parity mode. This must be one of the values:
CYGNUM_SERIAL_PARITY_NONE
CYGNUM_SERIAL_PARITY_EVEN
CYGNUM_SERIAL_PARITY_ODD
CYGNUM_SERIAL_PARITY_MARK
CYGNUM_SERIAL_PARITY_SPACE
The field flags is a bitmask which controls the behavior of the serial device driver. It should be built from the
values CYG_SERIAL_FLAGS_xxx defined below:
#define CYG_SERIAL_FLAGS_RTSCTS 0x0001
If this bit is set then the port is placed in “hardware handshake” mode. In this mode, the CTS and RTS pins control
when data is allowed to be sent/received at the port. This bit is ignored if the hardware does not support this level
of handshake.
typedef struct {
cyg_int32 rx_bufsize;
cyg_int32 rx_count;
cyg_int32 tx_bufsize;
cyg_int32 tx_count;
} cyg_serial_buf_info_t;
The field rx_bufsize contains the total size of the incoming data buffer. This is set to zero on devices that do
not support buffering (i.e. polled devices).
The field rx_count contains the number of bytes currently occupied in the incoming data buffer. This is set to
zero on devices that do not support buffering (i.e. polled devices).
266