Moxa UC-7101-T-LX [36/46] Buzzer

UC-7101/7110/7112 Software User’s Manual UC-7101/7110/7112 Device API

5-2

RTC (Real Time Clock)

The device node is located at /dev/rtc. The UC-7101/7110/7112 support µClinux standard

simple RTC control. You must include <linux/rtc.h> to use these functions.

1. Function: RTC_RD_TIME

int ioctl(fd, RTC_RD_TIME, struct rtc_time *time);

Description: Reads time information from RTC.

2. Function: RTC_SET_TIME

int ioctl(fd, RTC_SET_TIME, struct rtc_time *time);

Description: Sets RTC time.

Buzzer

The device node is located at /dev/console. The UC-7101/7110/7112 support µClinux

standard buzzer control. The UC-7101/7110/7112’s buzzer runs at a fixed frequency of 100 Hz.

You must include <sys/kd.h> to use these functions.

1. Function: KDMKTONE

ioctl(fd, KDMKTONE, unsigned int arg);

Description: Buzzer will beep, as stipulated by the function arguments.

UART Interface

The normal tty device node is located at /dev/ttyM0…ttyM1, and modem tty device node is

located at /dev/com0 … com1. The UC-7101/7110/7112 Series support µClinux standard termios

control. The Moxa UART Device API supports the configuration of ttyM0 to ttyM1 as

RS-232/422/485. To use these functions, after the Tool Chain package is installed, then include

<moxadevice.h> in your application.

#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 mode;

mode=which mode you want to set;

int ioctl(fd, MOXA_SET_OP_MODE, &mode)

Description: Sets the interface mode.

2. Function: MOXA_GET_OP_MODE

int mode;

int ioctl(fd, MOXA_GET_OP_MODE, &mode)

Description: Gets the interface mode.