using System;

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using UserShareNet;

namespace demo_CSharp02
{
    public partial class Form1 : Form
    {
        byte is_try_ok;     // try ... catch state, 1: Ok, 0: error
        float temp_single;  // temporary used 32-bit float value

        public Form1()
        {
            InitializeComponent();
        }

        // convert 8017H's value (-32768 ~ +32767) to float value (-10.0 ~ +10.0)
        private float convert_8017(short val)
        {
            if (val >= 0)
                return Convert.ToSingle(val) * 10.0f / 32767.0f;
            else
                return Convert.ToSingle(val) * 10.0f / 32768.0f;
        }              

        private void ScanAI()
        {
            Single Value ;
            // get AI value (short integer) at Address No. 9 to 12            
            UserShare.Get_REAL(Convert.ToUInt16(9), out Value);           
            AI_Value1.Text = Value.ToString("0.000");

            UserShare.Get_REAL(Convert.ToUInt16(10), out Value);            
            AI_Value2.Text = Value.ToString("0.000");

            UserShare.Get_REAL(Convert.ToUInt16(11), out Value);            
            AI_Value3.Text = Value.ToString("0.000");

            UserShare.Get_REAL(Convert.ToUInt16(12), out Value);            
            AI_Value4.Text = Value.ToString("0.000");

            // Get Real number at Address No.= 1 (AO 1)            
            UserShare.Get_REAL(Convert.ToUInt16(1), out Value);           
            AO_Value1.Text = Value.ToString("0.000");

        }    

        // check if value is inside -10.0 to +10.0
        // return 1:Ok , 0:Error
        private byte check_87024(float float_val)
        {
            if (float_val > 10.0 || float_val < -10.0)
            {
                MessageBox.Show("Value should be between -10.0 to +10.0 !");
                return 0;  // error
            }
            return 1;  // ok
        }

        private void Button4_Click(object sender, EventArgs e)
        {
            
            is_try_ok = 1;  // init as Ok

            try
            {
                temp_single = float.Parse(AO_Value4.Text);  // for ex, if Value = 12AB.cd, error happens. However for ex.  Value = 1.15 is correct
            }
            catch
            {
                is_try_ok = 0;   // error found
                MessageBox.Show("Wrong value !");
            }

            if (is_try_ok == 0)  // error found , return 
                return;

            // check if value is correct
            if (check_87024(temp_single) == 0)
                return;

           // temp = convert_87024(temp_single);
            // write a real number to Address No.=4            
            UserShare.Set_REAL(Convert.ToUInt16(4),temp_single);
        }

        private void Button3_Click(object sender, EventArgs e)
        {
            
            is_try_ok = 1;  // init as Ok
            try
            {
                temp_single = short.Parse(AO_Value3.Text);  // for ex, if Value = 12AB.cd, error happens. However for ex.  Value = 1.15 is correct
            }
            catch
            {
                is_try_ok = 0;   // error found
                MessageBox.Show("Wrong value !");
            }

            if (is_try_ok == 0)  // error found , return 
                return;
            // check if value is correct
            if (check_87024(temp_single) == 0)
                return;

            
            // write a short integer (16-bit signed, -32768 ~ +32767) to Modbus No.=3            
            UserShare.Set_REAL(Convert.ToUInt16(3), temp_single);
        }

        private void Button2_Click(object sender, EventArgs e)
        {            
            is_try_ok = 1;  // init as Ok
            try
            {
                temp_single = float.Parse(AO_Value2.Text);  // for ex, if Value = 12AB.cd, error happens. However for ex.  Value = 1.15 is correct
            }
            catch
            {
                is_try_ok = 0;   // error found
                MessageBox.Show("Wrong value !");
            }

            if (is_try_ok == 0) // error found , return 
                return;
            // check if value is correct
            if (check_87024(temp_single) == 0)
                return;            
         
            // write a real number to Address No.=2            
            UserShare.Set_REAL(Convert.ToUInt16(2), temp_single);

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // enable timer1
            timer1.Interval = 250;  // 250 ms
            timer1.Enabled = true;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            // scan A/I every timer1 interval
            ScanAI();
        }


    }
}