I am trying to connect PIC microcontroller with PC by USB cable in order to receive data from PIC 18F2550 microcontroller (in order to display it to a gauge in win form C# ) and send data to it in order to modify its EEPROM values.
I found an example that works (https://www.edaboard.com/threads/c-usb- ... or.344165/)BUT when I added the gauge, it stops after 2 seconds.
I created the gauge both in devexpress and syncfusion.
I think that one of the problem could be the difference versions of .net framework (usb hid library was made with version 3 but devexpress tools operates on a higher version) but I can`t solve it.
I have also tried with other hid libraries but the results were same: some of them were not compatible with windows forms, with others I could only receive data...
How could I achieve communication between PIC an PC ? Is there any tool made by mikroE (other than HID Terminal) in order to use data from PIC?
https://www.edaboard.com/threads/c-usb- ... or.344165/
Code: Select all
USB_Polling_Proc();
kk = HID_Read();
//if (kk != 0) {
for(cnt=0; cnt < 64; cnt++)
//writebuff[cnt]=readbuff[cnt];
writebuff[1]=pActual;
writebuff[2]=1;
if(readbuff[0] == 1)
{ for(i=0;i<10;i++){
LATd1_bit = 1; Delay_ms(100); LATd1_bit = 0; Delay_ms(100);
}
readbuff[0] = 0;
}
if(readbuff[5] != 0)
{
presetMin=readbuff[5];
readbuff[0] = 0;
}Code: Select all
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using UsbLibrary;
namespace USB_Term
{
public partial class Form1 : Form
{
byte[] RecievedData = new byte[65];
byte Tam = 0;
byte Onda = 0;
byte presiuneActuala = 0;
byte presiuneMinima = 0;
byte presiuneMaxima = 0;
bool durum = false;
private SpecifiedDevice device;
private byte[] lastData = new byte[65];
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.usbHidPort1.ProductId = Int32.Parse("0001", System.Globalization.NumberStyles.HexNumber);
this.usbHidPort1.VendorId = Int32.Parse("2DBC", System.Globalization.NumberStyles.HexNumber);
usbHidPort1.CheckDevicePresent();
if (durum)
{
toolStripStatusLabel1.ForeColor = Color.Green;
toolStripStatusLabel1.Text = "USB Conectat";
}
else
{
toolStripStatusLabel1.ForeColor = Color.Red;
toolStripStatusLabel1.Text = "Eroare USB";
}
}
protected override void OnHandleCreated(EventArgs e)
{
base.OnHandleCreated(e);
usbHidPort1.RegisterHandle(Handle);
}
protected override void WndProc(ref Message m)
{
usbHidPort1.ParseMessages(ref m);
base.WndProc(ref m);
}
private void usbHidPort1_OnDataRecieved(object sender, DataRecievedEventArgs args)
{
if(device == null)
{
device = (SpecifiedDevice)sender;
}
double presiuneActualaVirgula = double.Parse(presiuneActuala.ToString());
double presiuneMinimaVirgula = double.Parse(presiuneMinima.ToString());
double presiuneMaximaVirgula = double.Parse(presiuneMaxima.ToString());
if (InvokeRequired)
{
try
{
Invoke(new DataRecievedEventHandler(usbHidPort1_OnDataRecieved), new object[] { sender, args });
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
//
else
{
RecievedData = args.data;
Tam = RecievedData[2];
Onda = RecievedData[3];
label2.Text = Tam.ToString() + "," + Onda.ToString()+"°C";
presiuneActuala = RecievedData[1];
lblValPresiune.Text = (presiuneActualaVirgula/10).ToString();
presiuneMinima = RecievedData[2];
lblValPresiuneMinima.Text = (presiuneMinimaVirgula / 10).ToString();
presiuneMaxima = RecievedData[3];
radialGauge1.Value = presiuneActuala/10;
lblValoarePresiuneMaxima.Text = (presiuneMaximaVirgula / 10).ToString();
arcScaleNeedleComponent1.Value = (float)presiuneMinimaVirgula / 10;
}
}
private void usbHidPort1_OnDataSend(object sender, EventArgs e)
{
}
private void usbHidPort1_OnDeviceArrived(object sender, EventArgs e)
{
}
private void usbHidPort1_OnDeviceRemoved(object sender, EventArgs e)
{
}
private void usbHidPort1_OnSpecifiedDeviceArrived(object sender, EventArgs e)
{
toolStripStatusLabel1.ForeColor = Color.Green;
toolStripStatusLabel1.Text = "USB Conectat";
durum = true;
}
private void usbHidPort1_OnSpecifiedDeviceRemoved(object sender, EventArgs e)
{
toolStripStatusLabel1.ForeColor = Color.Red;
toolStripStatusLabel1.Text = "Eroare USB";
label2.Text = "--,-°C";
durum = false;
}
private void label2_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
for(int x = 0; x < 64; x++)
{
lastData[x] = (byte)x;
}
device.SendData(lastData);
}
private void radialGauge1_Click(object sender, EventArgs e)
{
}
private void radialGauge1_Click_1(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void btn_trimite_Click(object sender, EventArgs e)
{
byte[] data = new byte[64];
data[5] = Convert.ToByte(15);
//for (int x = 0; x < 64; x++)
//{
// lastData[x] = (byte)x;
//}
//device.SendData(0);
}
private void lblPresiuneActuala_Click(object sender, EventArgs e)
{
}
private void groupBox2_Enter(object sender, EventArgs e)
{
}
}
}
Code: Select all
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using HIDLib;
using System.Threading;
namespace WindowsFormsApplication1
{ public partial class Form1 : Form
{ HIDDevice dev = new HIDDevice();
public Form1()
{
InitializeComponent();
dev.vid = 0x2DBC;
dev.pid = 0x0001;
dev.in_size = 64;
dev.out_size = 64;
dev.Initialize();
Thread timer = new Thread(ReadSerial);
timer.Start();
}
private void DateTimeUpdate_Tick(object sender, EventArgs e)
{
lbDateTime.Text = DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss");
}
static byte[] GetBytes(string str)
{
byte[] bytes = new byte[str.Length * sizeof(char)];
int iLength = str.Length;
//string strNull = null;
System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
//System.Buffer.BlockCopy(strNull.ToCharArray(), 64-str.Length, bytes, 64-str.Length, 64);
//System.Buffer.BlockCopy( null, 64 - str.Length, bytes, 64 - str.Length, 64);
return bytes;
}
static string GetString(byte[] bytes)
{
char[] chars = new char[bytes.Length / sizeof(char)];
System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
return new string(chars);
}
//Ket thuc phan ham them vao ---dtn89
protected override void WndProc(ref Message m)
{
dev.DeviceChange(ref m);
base.WndProc(ref m);
if (!dev.AttachedState) { lblPrimire.Text = "Disconnected!"; lblPrimire.ForeColor = Color.Red; }
else { lblPrimire.Text = "Connected!"; lblPrimire.ForeColor = Color.Green; }
}
private void timer1_Tick(object sender, EventArgs e)
{
byte[] data = new byte[64];
byte[] str = new byte[64];
data = dev.Receive();
if (data != null)
{
lblDate.Text = data[6].ToString();
}
}
public void ReadSerial()
{
while (true)
{
try
{
byte[] data = new byte[64];
byte[] str = new byte[64];
data = dev.Receive();
if (data != null)
{
lblDate.Invoke(new MethodInvoker(delegate {lblDate.Text = data[6].ToString(); }));
}
Thread.Sleep(1000);
}
catch (Exception ex)
{ MessageBox.Show(ex.ToString()); }
}
}
private void btnPresMin_Click(object sender, EventArgs e)
{
int valCaseta1 = int.Parse(txtSetPresMin.Text.ToString());
byte valCaseta = Convert.ToByte(valCaseta1);
byte[] data = new byte[64];
data[5] = valCaseta;
if (!dev.Transmit(data)) MessageBox.Show("Device not ready");
}
private void btnPresMax_Click(object sender, EventArgs e)
{
int valCaseta1 = int.Parse(txtSetPresMax.Text.ToString());
byte valCaseta = Convert.ToByte(valCaseta1);
byte[] data = new byte[64];
data[6] = valCaseta;
if (!dev.Transmit(data)) MessageBox.Show("Device not ready");
}
