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[How To] Create a own USB HID device

 
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benni



Joined: 28 Jun 2012
Posts: 28

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[How To] Create a own USB HID device
PostPosted: Sun Dec 30, 2012 8:12 am     Reply with quote

Hello Community,

A few days ago I started to create my own USB device.
I also saw that much guys tried that also, maybe they got it working or not and because of this I want to release my C# and my PIC Project.

The C# program is not fully made by me, but I edited it and even got it working for my device.

The most important things in the PIC firmware:
Commands:
Code:
//Commands
#define CMD_LED2_ON 0x80
#define CMD_STATE_LED2_ON 0x81


Check the incoming data for the Commands:
Code:
//Get the Data
usb_get_packet(1,in_data,16);
//Write to the LCD that Data has been received
printf(lcd_putc,"\fReceived Data:\n");

//Check if the incoming byte equals the Command
if(in_data[0] == CMD_STATE_LED2_ON)
{
  //Write to the LCD that command 0x81 has been executed
  printf(lcd_putc,"LED2 is: %d", input(LED2));

  //Check if LED is high
  if(input(LED2))
  { 
     //Set the output byte to 0x01 == true
     out_data[0] = 0x01;
     //Send data
     usb_put_packet(1,out_data,16 USB_DTS_TOGGLE);
     output_high(LED2);
  }
  else
  {
     //set the output byte to 0x00 == false
     out_data[0] = 0x00;
     //Send data
     usb_put_packet(1,out_data,16 USB_DTS_TOGGLE);
  }
}
else if(in_data[0] == CMD_LED2_ON)
{
  //Toggle LED State
  printf(lcd_putc,"Turn LED2 ON");
  output_toggle(LED2);
}


The most important things in the C# Project
Execute a command:
Code:
public void RunCommand(Byte be)


PID and VID:
Code:
Int32 myProductID = Convert.ToInt32(0x0042);
Int32 myVendorID = Convert.ToInt32(0x04D8);


Get data from the PIC for example: Read the LED state:
Code:
if (!hidHandle.IsInvalid)
{
    ReadCommand(0x81);
    //Read the LED state
    bool ledState = Convert.ToBoolean(m_Result);
   
    if (ledState == true) this.ledStateLabel.Text = "LED is on";
    else this.ledStateLabel.Text = "LED is off";
}


Here are the Downloads, hosted on my server:
Firmware:
Firmware

C# Program
C# Program

Schematic (The LCD is just for Debugging, the Schematic does not contain a schematic how to wire it.
Easy Schematic

Example Picture (You see there much more than it's needed. I use this Board also for an ADC Reader)
Example Picture

I hope it helps to understand it and getting it working for you too and I hope that someone moderator will make it sticky.

Leave a comment please Smile

Regards Benni


Last edited by benni on Thu Oct 03, 2013 6:10 am; edited 1 time in total
rakkoc



Joined: 05 Apr 2012
Posts: 1

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PostPosted: Mon Aug 12, 2013 9:31 am     Reply with quote

Links are broken, can you upload again ?
benni



Joined: 28 Jun 2012
Posts: 28

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PostPosted: Thu Oct 03, 2013 6:12 am     Reply with quote

Hey,

Links are updated.

Regards Benni
ze.vana



Joined: 11 Jun 2011
Posts: 15

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PostPosted: Sat Mar 08, 2014 5:22 am     Reply with quote

benni wrote:
Hey,

Links are updated.

Regards Benni

you are right I'm the one who is having a lot of difficulty starting on usb hid devices
I have started in visual c# 2008 last year, and now c# 2010. I've already made many C# projects
communication with PIC4550,2550 usb->PC, but using C# serial Port, I wanna do it using HID.
But As the guy said "THE LINKS ARE BROKEN". Could you please send me it by email:
ze.vana@hotmail.com , I have an account in www.4shared.com, if you have too, you can put the your links there.
pieter



Joined: 16 Jan 2011
Posts: 27

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information
PostPosted: Fri Mar 14, 2014 12:12 am     Reply with quote

Hi Benni, can you please post your downloads on the forum?
Thanks!
sohar



Joined: 14 Aug 2014
Posts: 1

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PostPosted: Thu Aug 14, 2014 11:44 pm     Reply with quote

Note: CCS defaults to software i2c, unless you use the
hardware i2c pins and add the FORCE_HW parameter to the #use i2c()
statement.
_________________
####### Abdul Rehman ########
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