User`s manual

UC-8410/8416/8418 LX User’s Manual Programmer’s Guide
5-13
DIO Program Make File Example
FNAME=tdio
CC=xscale-linux-gcc
STRIP=xscale-linux-strip
release:
$(CC) -o $(FNAME) $(FNAME).c -lmoxalib -lpthread
$(STRIP) -s $(FNAME)
debug:
$(CC) -DDEBUG -o $(FNAME)-dbg $(FNAME).cxx -lmoxalib -lpthread
clean:
/bin/rm -f $(FNAME) $(FNAME)-dbg *.o
Note: For the UC-8418, 8 additional digital input channels and 8 additional digital output
channels are provided. The port numbers for these go from 4 to 11.
UART
The normal tty device node is located at /dev/ttyM0 … ttyM7, and the modem tty device node is
located at /dev/cum0 … cum7.
The UC-8410/8416/8418 supports Linux standard termios control. The Moxa UART Device API
allows you to configure ttyM0 to ttyM7 as RS-232, RS-422, 4-wire RS-485, or 2-wire RS-485.
The UC-8410/8416/8418 supports RS-232, RS-422, 2-wire RS-485, and 4-wire RS485.
You must include <moxadevice.h>.
#define RS232_MODE 0
#define RS485_2WIRE_MODE 1
#define RS422_MODE 2
#define RS485_4WIRE_MODE 3
1. Function: MOXA_SET_OP_MODE
int ioctl(fd, MOXA_SET_OP_MODE, &mode)
Description
Set the interface mode. Argument 3 mode will pass to the UART device driver and change it.
2. Function: MOXA_GET_OP_MODE
int ioctl(fd, MOXA_GET_OP_MODE, &mode)
Description
Get the interface mode. Argument 3 mode will return the interface mode.
There are two Moxa private ioctl commands for setting up special baudrates.
Function: MOXA_SET_SPECIAL_BAUD_RATE
Function: MOXA_GET_SPECIAL_BAUD_RATE
If you use this ioctl to set a special baudrate, the termios cflag will be B4000000, in which case the
B4000000 definition will be different. If the baudrate you get from termios (or from calling
tcgetattr()) is B4000000, you must call ioctl with MOXA_GET_SPECIAL_BAUD_RATE to get
the actual baudrate.