SerialComm | C # WPF MVVM SerialComm/SerialPort Monitor Source Code | Wrapper library

#include 
#include "serialcomm.h"
#include 
#include 
#define BUFF_SIZE 256

int main()
{

    CSerialComm serialComm;

    BYTE buff[BUFF_SIZE] = { 0, };

    int op = 0;
    int port = 0;
    int size = 0;
    int size2 = 0;
    int restart = 0;
    char port_s[20] = "";
    char send_string[1000];
    char confirm[BUFF_SIZE];
    char dec[BUFF_SIZE];


    printf("select mode(1. send, 2. receive) : ");
    scanf_s("%d", &op);

    printf("insert port num : ");
    scanf_s("%d", &port);
    getchar();
    if (op == 1) {
        printf("plz submit data  (ex : 0x0a 0x01, 0x02, 0x0b) : ");
        gets_s(send_string, sizeof(send_string));
        size = serialComm.getHexData(send_string, buff);

        printf("read size(max %d) : ", BUFF_SIZE);
        scanf_s("%d", &size2);
    }


    sprintf_s(port_s, "COM%d", port);

    // STEP 1. SerialPort Connect
    if (!serialComm.connect(port_s)) {
        printf("connect faliled");
        return -1;
    }
    else {
        printf("connect successed\n");
    }

    if (op == 1) {
        // STEP 2. Send Command

        while (1) {



            if (!serialComm.sendCommand(buff, size)) {
                printf("send command failed\n");
            }
            else {
                int i = 0;
                printf("tx data(%d) : [ ", size);
                for (i = 0; i < size; i++) {
                    printf("0x%02X ", buff[i]);
                }
                printf("]\n");
            }
            Sleep(2000);

            serialComm.readByte(buff, size2);

            int j = 0;
            printf("rx data(%d) : [ ", size2);
            for (j = 0; j < size2; j++) {
                printf("0x%02X ", buff[j]);
            }
            printf("]\n");


            //data convert
            char buffer[256];
            int m = 0;
            printf("[  ");
            for (m = 0; m < size; m++) {

                fprintf(stderr, "%d", buff[m]);
                printf("  ");
            }
            printf("]\n");

            sprintf_s(buffer, sizeof(buffer), "%d", buff[m]);
            
            char data1 = buff[0];
            char data2 = buff[1];
            char data3 = buff[2];
            char data4 = buff[3];
            char data5 = buff[4];
            char data6 = buff[5];
            char data7 = buff[6];
            char data8 = buff[7];
            char data1 = buff[8];

            size = serialComm.getHexData(send_string, buff);
            Sleep(2000);
        }