5. CONFIGURATION
Data type Options Description
RS232_RTS_ON
Controls the RS-232C port of the
Nexto CPU. The RTS signal is al-
ways on.
RS232_RTS_CTS
Controls the RS-232C port of the
Nexto CPU. In case the CTS is dis-
abled, the RTS is enabled. Then
waits for the CTS to be enabled
to get the transmission and RTS
restarts as soon as possible, at the
end of transmission. Ex: Control-
ling radio modems with the same
modem signal.
RS232_MANUAL
Controls the RS-232C port of the
Nexto CPU. The user is responsi-
ble to control all the signals (RTS,
DTR, CTS, DSR, DCD).
SERIAL_MODE NORMAL_MODE
Serial Communication Normal Op-
eration mode.
EXTENDED_MODE
Serial Communication Extended
Operation mode in which are pro-
vided information about the re-
ceived data frame.
Defines all configuration parameters of the serial port:
BAUDRATE Defined in SERIAL_BAUDRATE.
DATABITS Defined in SERIAL_DATABITS.
STOPBITS Defined in SERIAL_STOPBITS.
PARITY Defined in SERIAL_PARITY.
SERIAL_PARAMETERS HANDSHAKE
Defined in SE-
RIAL_HANDSHAKE.
UART_RX_THRESHOLD
Byte quantity which must be re-
ceived to generate a new UART in-
terruption. Lower values make the
TIMESTAMP more precise when
the EXTENDED MODE is used
and minimizes the overrun errors.
However, values too low may cause
too many interruptions and delay
the CPU.
MODE Defined in SERIAL_MODE.
ENABLE_RX_ON_TX
When true, all the received byte
during the transmission will be dis-
charged instead going to the RX
line. Used to disable the full-duplex
operation in the RS-422 interface.
ENABLE_DCD_EVENT
When true, generates an external
event when the DCD is modified.
ENABLE_CTS_EVENT
When true, generates an external
event when the CTS is modified.
PARITY_NONE List all parity possibilities.
PARITY_ODD
SERIAL_PARITY PARITY_EVEN
PARITY_MARK
232
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