Moxa Technologies C360 manual Write a string of data to Tx buffer, Non-TTY port parameter setting

For UNIX Users ∙ ∙ Chapter 4

int	sio_read(int port, char *buf, int len)
return	=	>0	length of data received
		0	no data received
		-1	bad port
		-2	time out
		-5	port is not open
port	=	port number
buf	=	receive buffer pointer with required space
len	=	buffer length

4.Write a string of data to Tx buffer.

int	sio_write(int port, char *buf, int len)
return	=	>0	length of data transmitted to Tx buffer
		=0	buffer full
		-1	bad port
		-2	time out
		-5	port is not open
port	=	port number
buf	=	transmit string pointer
len	=	transmit string length

5.Put a block of data to Tx buffer. If the Tx buffer free space is smaller than block length, it will return zero.

int	sio_putb(int port, char *buf, int len)
return	=	>0	length of data transmitted to Tx buffer
		0	free buffer not enough
		-1	bad port
		-2	time out
		-5	port is not open
		-6	len > Tx buffer size
port	=	port number
buf	=	transmit string pointer
len	=	transmit string length

6.Non-TTY port parameter setting.

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