https://www.aliexpress.com/item/32990413968.html
RS232 시리얼포트/196; 1228;Ǻ12;.104;lj16; 4채널 릴/112;1060; 1228;품1012; 샀습니다.
https://onedrive.live.com/redir?resid=3DFF9FAEE8435679!15927&authkey=!AG1AzoSlnv7JM4g&ithint=file%2crar
그런데 1228;공Ȣ16;lj16; 소프트웨Ǻ12;lj16; 윈도우용 C#1004;/196; 1676;여1652; 코드 1104;1060;네요.
단순Ȣ16;,172; 그냥 161652;수값1012; writeȢ16;면 .104;lj16;,152;/196; 생각Ȣ16;고 리눅스에서 C코드를 1089;성Ȣ16;였1004;나 ᇼ1;1089;1060; 안.104;네요.
무Ǻ16;가 IC를 1228;Ǻ12;Ȣ16;lj16; 별도1032; 라1060;브러리가 필요한,163;1068;까요?
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#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#define COM3    "/dev/ttyS0"
static int fd3;
// 시리얼포트 속성처리용 구1312;체
struct termios newtio3;
int serial_init(void)
{
    fd3 = open(COM3, O_RDWR | O_NOCTTY);
    // COM1 시리얼 속성 셋ᔚ1;
    memset(&newtio3, 0, sizeof(newtio3));
    cfsetispeed(&newtio3, B9600);
    cfsetospeed(&newtio3, B9600);
    newtio3.c_cflag |= PARENB;
    newtio3.c_cflag &= ~PARODD;
    newtio3.c_cflag &= ~CSTOPB;
    newtio3.c_cflag &= ~CSIZE;
    newtio3.c_cflag |= CS8;
    newtio3.c_cflag |= CLOCAL;
    newtio3.c_cflag |= CREAD;
    newtio3.c_iflag = IGNPAR;
    newtio3.c_oflag = 0;
    newtio3.c_lflag = 0;
    newtio3.c_cc[VTIME] = 0;
    newtio3.c_cc[VMIN] = 1;
    tcflush (fd3, TCIFLUSH);
    tcsetattr(fd3, TCSANOW, &newtio3);
    return 0;
}
int main(int argc, char* argv[])
{
    int bytes, i;
    char buf[4][8];
    char momentary[8];
    serial_init();
    memset(momentary, 0x00, 8);
    momentary[0] = 0x55; momentary[1] = 0x56; momentary[2] = 0x00; momentary[3] = 0x00;
    momentary[4] = 0x00; momentary[5] = 0x01; momentary[6] = 0x04; momentary[7] = 0xB0;
    //setvbuf(stdout, NULL, _IOFBF, 0);
    bytes = write(fd3, momentary, 8);
#if 0
    for(i=0;i<4;i++)
    {
        memset(buf[i], 0x00, 8);
    }
    // Relay Open
    buf[0][0] = 0x55; buf[0][1] = 0x56; buf[0][2] = 0x00; buf[0][3] = 0x00; buf[0][4] = 0x00; buf[0][5] = 0x01; buf[0][6] = 0x01; buf[0][7] = 0xAD;
    buf[1][0] = 0x55; buf[1][1] = 0x56; buf[1][2] = 0x00; buf[1][3] = 0x00; buf[1][4] = 0x00; buf[1][5] = 0x02; buf[1][6] = 0x01; buf[1][7] = 0xAE;
    buf[2][0] = 0x55; buf[2][1] = 0x56; buf[2][2] = 0x00; buf[2][3] = 0x00; buf[2][4] = 0x00; buf[2][5] = 0x03; buf[2][6] = 0x01; buf[2][7] = 0xAF;
    buf[3][0] = 0x55; buf[3][1] = 0x56; buf[3][2] = 0x00; buf[3][3] = 0x00; buf[3][4] = 0x00; buf[3][5] = 0x04; buf[3][6] = 0x01; buf[3][7] = 0xB0;
    for(i=0;i<4;i++)
    {
        write(fd3, buf[i], 8);
        sleep(1);
    }
    // Relay Close
    buf[0][0] = 0x55; buf[0][1] = 0x56; buf[0][2] = 0x00; buf[0][3] = 0x00; buf[0][4] = 0x00; buf[0][5] = 0x01; buf[0][6] = 0x02; buf[0][7] = 0xAE;
    buf[1][0] = 0x55; buf[1][1] = 0x56; buf[1][2] = 0x00; buf[1][3] = 0x00; buf[1][4] = 0x00; buf[1][5] = 0x02; buf[1][6] = 0x02; buf[1][7] = 0xAF;
    buf[2][0] = 0x55; buf[2][1] = 0x56; buf[2][2] = 0x00; buf[2][3] = 0x00; buf[2][4] = 0x00; buf[2][5] = 0x03; buf[2][6] = 0x02; buf[2][7] = 0xB0;
    buf[3][0] = 0x55; buf[3][1] = 0x56; buf[3][2] = 0x00; buf[3][3] = 0x00; buf[3][4] = 0x00; buf[3][5] = 0x04; buf[3][6] = 0x02; buf[3][7] = 0xB1;
    for(i=0;i<4;i++)
    {
        write(fd3, buf[i], 8);
        sleep(1);
    }
#endif
    close(fd3);
    return 0;
}
윈도우10에서는 잘 동작되네요.
아래처럼 되어 있는데..
포트번호 설정만 있고 다른 건 없는 거 보니 c# 에서 사용하는 디폴트 설정인 듯 합니다.
vs c# 에서 디폴트 설정 이미지를 올리니 참고하여 c 에서도 설정이 같게 되어 있는지 확인해보세요.
[https://i.imgur.com/Hcf1BHO.png]
public class SerialRelay
{
private System.IO.Ports.SerialPort port = new SerialPort();
private string _lastError = string.Empty;
private byte[] _sums = new byte[] {0xAB,0xAD,0xAE,0xAF,0xB0,0xAE,0xAF,0xB0,0xB1,0xAF,0xB0,0xB1,0xB2,0xB0,0xB1,0xB2,0xB3};
byte[] b = new byte[8];
public static String[] GetPorts()
{
return SerialPort.GetPortNames();
}
public string LastError
{
get { return _lastError; }
}
public SerialRelay()
{
b[0] = 0x55;
b[1] = 0x56;
b[2] = 0x00;
b[3] = 0x00;
b[4] = 0x00;
}
public bool Open(string portName)
{
_lastError = string.Empty;
if (port.IsOpen) port.Close();
port.PortName = portName;
try
{
port.Open();
return true;
}
catch(Exception ex)
{
_lastError = ex.Message;
}
return false;
}
public void SendCommand(RelayCommand command,int channel)
{
if (!port.IsOpen) return;
if (channel < 1 || channel > 4) return;
b[5] = Convert.ToByte(channel);
b[6] = Convert.ToByte(command);
b[7] = 0xAB;
b[7] += b[5];
b[7] += b[6];
port.Write(b, 0, 8);
}
}
다음과 같이 C 코드를 수정하여 해결보았습니다. 감사합니다.
struct termios newtio3;
int serial_init(void)
{
fd3 = open(COM3, O_RDWR | O_NOCTTY);
newtio3.c_cflag = B9600;
newtio3.c_cflag |= CS8;
newtio3.c_cflag |= CLOCAL;
newtio3.c_cflag |= CREAD;
newtio3.c_iflag = 0;
newtio3.c_oflag = 0;
newtio3.c_lflag = 0;
newtio3.c_cc[VTIME] = 0;
newtio3.c_cc[VMIN] = 1;
tcflush(fd3, TCIFLUSH);
tcsetattr(fd3, TCSANOW, &newtio3);
return 0;
}