UART Control Macros
[XNUT-100 & XNUT-105 DIN-rail SBC]

Collaboration diagram for UART Control Macros:

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Detailed Description

Functions to control UART modes.

Defines
#define	SER0_RS232_MODE()   (PORTB |= _BV(0))
#define	SER0_RS485_MODE()   (PORTB &= ~_BV(0))
#define	SER0_RS485_DRV_ON()   (PORTB |= _BV(1))
#define	SER0_RS485_DRV_OFF()   (PORTB &= ~_BV(1))
#define	SER1_RS232_MODE()   (PORTB |= _BV(2))
#define	SER1_RS485_MODE()   (PORTB &= ~_BV(2))
#define	SER1_RS485_DRV_ON()   (PORTB |= _BV(3))
#define	SER1_RS485_DRV_OFF()   (PORTB &= ~_BV(3))
#define	SER0_GET_CD()   bit_is_set(PINB, 6)
#define	SER0_GET_RI()   bit_is_set(PINB, 7)
#define	SER0_GET_CTS()   bit_is_set(PINE, 6)
#define	SER0_SET_RTS()   (PORTB |= _BV(4))
#define	SER0_CLR_RTS()   (PORTB &= ~_BV(4))

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Define Documentation

#define SER0_RS232_MODE (   )     (PORTB |= _BV(0))

Configure Ser 0 to operate in RS232 mode. In RS232 mode receiption from SUB-D connector J9 is enabled and the receiver on connector J6-2/3 is disabled.

#define SER0_RS485_MODE (   )     (PORTB &= ~_BV(0))

Configure Ser 0 to operate in RS485 mode. In RS485 mode receiption from connector J6-2/3 is enabled and the receiver on SUB-D connector J9 is disabled.

#define SER0_RS485_DRV_ON (   )     (PORTB |= _BV(1))

Switches the RS485 line driver of Ser 0 on. RS485 is a half-duplex link and the line driver must be switched off to allow receiption of data.

#define SER0_RS485_DRV_OFF (   )     (PORTB &= ~_BV(1))

Switches the RS485 line driver of Ser 0 off.

#define SER1_RS232_MODE (   )     (PORTB |= _BV(2))

Configure Ser 1 to operate in RS232 mode. In RS232 mode receiption from SUB-D connector J7 is enabled and the receiver on connector J6-5/6 is disabled.

#define SER1_RS485_MODE (   )     (PORTB &= ~_BV(2))

Configure Ser 1 to operate in RS485 mode. In RS485 mode receiption from connector J6-5/6 is enabled and the receiver on SUB-D connector J7 is disabled.

#define SER1_RS485_DRV_ON (   )     (PORTB |= _BV(3))

Switches the RS485 line driver of Ser 1 on. RS485 is a half-duplex link and the line driver must be switched off to allow receiption of data.

#define SER1_RS485_DRV_OFF (   )     (PORTB &= ~_BV(3))

Switches the RS485 line driver of Ser 1 off.

#define SER0_GET_CD (   )     bit_is_set(PINB, 6)

Returns the status of the RS232 CD signal input of Ser 0 on SUB-D connector J9 Returns: 1 if CD is asserted

#define SER0_GET_RI (   )     bit_is_set(PINB, 7)

Returns the status of the RS232 RI signal input of Ser 0 on SUB-D connector J9 Returns: 1 if RI is asserted

#define SER0_GET_CTS (   )     bit_is_set(PINE, 6)

Returns the status of the RS232 CTS signal input of Ser 0 on SUB-D connector J9 Returns: 1 if CTS is asserted

#define SER0_SET_RTS (   )     (PORTB |= _BV(4))

Asserts the RS232 RTS signal output of Ser 0 on SUB-D connector J9

#define SER0_CLR_RTS (   )     (PORTB &= ~_BV(4))

Clears the RS232 RTS signal output of Ser 0 on SUB-D connector J9

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